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parse.c revision 1.127
      1  1.127       dsl /*	$NetBSD: parse.c,v 1.127 2007/01/01 21:47:32 dsl Exp $	*/
      2   1.15  christos 
      3    1.1       cgd /*
      4   1.27  christos  * Copyright (c) 1988, 1989, 1990, 1993
      5   1.27  christos  *	The Regents of the University of California.  All rights reserved.
      6   1.94       agc  *
      7   1.94       agc  * This code is derived from software contributed to Berkeley by
      8   1.94       agc  * Adam de Boor.
      9   1.94       agc  *
     10   1.94       agc  * Redistribution and use in source and binary forms, with or without
     11   1.94       agc  * modification, are permitted provided that the following conditions
     12   1.94       agc  * are met:
     13   1.94       agc  * 1. Redistributions of source code must retain the above copyright
     14   1.94       agc  *    notice, this list of conditions and the following disclaimer.
     15   1.94       agc  * 2. Redistributions in binary form must reproduce the above copyright
     16   1.94       agc  *    notice, this list of conditions and the following disclaimer in the
     17   1.94       agc  *    documentation and/or other materials provided with the distribution.
     18   1.94       agc  * 3. Neither the name of the University nor the names of its contributors
     19   1.94       agc  *    may be used to endorse or promote products derived from this software
     20   1.94       agc  *    without specific prior written permission.
     21   1.94       agc  *
     22   1.94       agc  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23   1.94       agc  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24   1.94       agc  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25   1.94       agc  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26   1.94       agc  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27   1.94       agc  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28   1.94       agc  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29   1.94       agc  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30   1.94       agc  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31   1.94       agc  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32   1.94       agc  * SUCH DAMAGE.
     33   1.94       agc  */
     34   1.94       agc 
     35   1.94       agc /*
     36    1.1       cgd  * Copyright (c) 1989 by Berkeley Softworks
     37    1.1       cgd  * All rights reserved.
     38    1.1       cgd  *
     39    1.1       cgd  * This code is derived from software contributed to Berkeley by
     40    1.1       cgd  * Adam de Boor.
     41    1.1       cgd  *
     42    1.1       cgd  * Redistribution and use in source and binary forms, with or without
     43    1.1       cgd  * modification, are permitted provided that the following conditions
     44    1.1       cgd  * are met:
     45    1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     46    1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     47    1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     48    1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     49    1.1       cgd  *    documentation and/or other materials provided with the distribution.
     50    1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     51    1.1       cgd  *    must display the following acknowledgement:
     52    1.1       cgd  *	This product includes software developed by the University of
     53    1.1       cgd  *	California, Berkeley and its contributors.
     54    1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     55    1.1       cgd  *    may be used to endorse or promote products derived from this software
     56    1.1       cgd  *    without specific prior written permission.
     57    1.1       cgd  *
     58    1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     59    1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     60    1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     61    1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     62    1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     63    1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     64    1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     65    1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     66    1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     67    1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     68    1.1       cgd  * SUCH DAMAGE.
     69    1.1       cgd  */
     70    1.1       cgd 
     71   1.96      ross #ifndef MAKE_NATIVE
     72  1.127       dsl static char rcsid[] = "$NetBSD: parse.c,v 1.127 2007/01/01 21:47:32 dsl Exp $";
     73   1.36     lukem #else
     74   1.34  christos #include <sys/cdefs.h>
     75    1.1       cgd #ifndef lint
     76   1.15  christos #if 0
     77   1.27  christos static char sccsid[] = "@(#)parse.c	8.3 (Berkeley) 3/19/94";
     78   1.15  christos #else
     79  1.127       dsl __RCSID("$NetBSD: parse.c,v 1.127 2007/01/01 21:47:32 dsl Exp $");
     80   1.15  christos #endif
     81    1.1       cgd #endif /* not lint */
     82   1.36     lukem #endif
     83    1.1       cgd 
     84    1.1       cgd /*-
     85    1.1       cgd  * parse.c --
     86    1.1       cgd  *	Functions to parse a makefile.
     87    1.1       cgd  *
     88    1.1       cgd  *	One function, Parse_Init, must be called before any functions
     89    1.1       cgd  *	in this module are used. After that, the function Parse_File is the
     90    1.1       cgd  *	main entry point and controls most of the other functions in this
     91    1.1       cgd  *	module.
     92    1.1       cgd  *
     93    1.1       cgd  *	Most important structures are kept in Lsts. Directories for
     94  1.123       dsl  *	the .include "..." function are kept in the 'parseIncPath' Lst, while
     95  1.123       dsl  *	those for the .include <...> are kept in the 'sysIncPath' Lst. The
     96    1.1       cgd  *	targets currently being defined are kept in the 'targets' Lst.
     97    1.1       cgd  *
     98    1.1       cgd  *	The variables 'fname' and 'lineno' are used to track the name
     99    1.1       cgd  *	of the current file and the line number in that file so that error
    100    1.1       cgd  *	messages can be more meaningful.
    101    1.1       cgd  *
    102    1.1       cgd  * Interface:
    103    1.1       cgd  *	Parse_Init	    	    Initialization function which must be
    104    1.1       cgd  *	    	  	    	    called before anything else in this module
    105    1.1       cgd  *	    	  	    	    is used.
    106    1.1       cgd  *
    107    1.9       jtc  *	Parse_End		    Cleanup the module
    108    1.9       jtc  *
    109    1.1       cgd  *	Parse_File	    	    Function used to parse a makefile. It must
    110    1.1       cgd  *	    	  	    	    be given the name of the file, which should
    111    1.1       cgd  *	    	  	    	    already have been opened, and a function
    112    1.1       cgd  *	    	  	    	    to call to read a character from the file.
    113    1.1       cgd  *
    114    1.1       cgd  *	Parse_IsVar	    	    Returns TRUE if the given line is a
    115    1.1       cgd  *	    	  	    	    variable assignment. Used by MainParseArgs
    116    1.1       cgd  *	    	  	    	    to determine if an argument is a target
    117    1.1       cgd  *	    	  	    	    or a variable assignment. Used internally
    118    1.1       cgd  *	    	  	    	    for pretty much the same thing...
    119    1.1       cgd  *
    120    1.1       cgd  *	Parse_Error	    	    Function called when an error occurs in
    121    1.1       cgd  *	    	  	    	    parsing. Used by the variable and
    122    1.1       cgd  *	    	  	    	    conditional modules.
    123    1.1       cgd  *	Parse_MainName	    	    Returns a Lst of the main target to create.
    124    1.1       cgd  */
    125    1.1       cgd 
    126   1.84       wiz #include <ctype.h>
    127   1.84       wiz #include <errno.h>
    128  1.125       dsl #include <fcntl.h>
    129    1.5       cgd #include <stdarg.h>
    130    1.5       cgd #include <stdio.h>
    131   1.84       wiz 
    132    1.1       cgd #include "make.h"
    133    1.5       cgd #include "hash.h"
    134    1.5       cgd #include "dir.h"
    135    1.5       cgd #include "job.h"
    136    1.1       cgd #include "buf.h"
    137    1.1       cgd #include "pathnames.h"
    138    1.1       cgd 
    139    1.1       cgd /*
    140    1.1       cgd  * These values are returned by ParseEOF to tell Parse_File whether to
    141    1.1       cgd  * CONTINUE parsing, i.e. it had only reached the end of an include file,
    142    1.1       cgd  * or if it's DONE.
    143    1.1       cgd  */
    144    1.1       cgd #define	CONTINUE	1
    145    1.1       cgd #define	DONE		0
    146    1.1       cgd static Lst     	    targets;	/* targets we're working on */
    147   1.45   mycroft #ifdef CLEANUP
    148    1.9       jtc static Lst     	    targCmds;	/* command lines for targets */
    149   1.45   mycroft #endif
    150    1.1       cgd static Boolean	    inLine;	/* true if currently in a dependency
    151    1.1       cgd 				 * line or its commands */
    152    1.1       cgd static int	    fatals = 0;
    153    1.1       cgd 
    154    1.1       cgd static GNode	    *mainNode;	/* The main target to create. This is the
    155    1.1       cgd 				 * first target on the first dependency
    156    1.1       cgd 				 * line in the first makefile */
    157    1.1       cgd typedef struct IFile {
    158  1.122       dsl     const char      *fname;	    /* name of file */
    159  1.122       dsl     int             lineno;	    /* line number in file */
    160  1.125       dsl     int             fd;		    /* the open file */
    161  1.123       dsl     char            *P_str;         /* point to base of string buffer */
    162  1.123       dsl     char            *P_ptr;         /* point to next char of string buffer */
    163  1.125       dsl     char            *P_end;         /* point to the end of string buffer */
    164  1.127       dsl     int             P_buflen;       /* current size of file buffer */
    165    1.5       cgd } IFile;
    166    1.1       cgd 
    167  1.127       dsl #define IFILE_BUFLEN 0x8000
    168  1.125       dsl static IFile	    *curFile;
    169   1.82   reinoud 
    170   1.82   reinoud 
    171   1.82   reinoud /*
    172   1.82   reinoud  * Definitions for handling #include specifications
    173   1.82   reinoud  */
    174   1.82   reinoud 
    175  1.123       dsl static Lst      includes;  	/* stack of IFiles generated by .includes */
    176    1.1       cgd Lst         	parseIncPath;	/* list of directories for "..." includes */
    177    1.1       cgd Lst         	sysIncPath;	/* list of directories for <...> includes */
    178   1.74        tv Lst         	defIncPath;	/* default directories for <...> includes */
    179    1.1       cgd 
    180    1.1       cgd /*-
    181    1.1       cgd  * specType contains the SPECial TYPE of the current target. It is
    182    1.1       cgd  * Not if the target is unspecial. If it *is* special, however, the children
    183    1.1       cgd  * are linked as children of the parent but not vice versa. This variable is
    184    1.1       cgd  * set in ParseDoDependency
    185    1.1       cgd  */
    186    1.1       cgd typedef enum {
    187    1.1       cgd     Begin,  	    /* .BEGIN */
    188    1.1       cgd     Default,	    /* .DEFAULT */
    189    1.1       cgd     End,    	    /* .END */
    190    1.1       cgd     Ignore,	    /* .IGNORE */
    191    1.1       cgd     Includes,	    /* .INCLUDES */
    192    1.1       cgd     Interrupt,	    /* .INTERRUPT */
    193    1.1       cgd     Libs,	    /* .LIBS */
    194    1.1       cgd     MFlags,	    /* .MFLAGS or .MAKEFLAGS */
    195    1.1       cgd     Main,	    /* .MAIN and we don't have anything user-specified to
    196    1.1       cgd 		     * make */
    197    1.5       cgd     NoExport,	    /* .NOEXPORT */
    198   1.32       gwr     NoPath,	    /* .NOPATH */
    199    1.1       cgd     Not,	    /* Not special */
    200   1.75        tv     NotParallel,    /* .NOTPARALLEL */
    201    1.1       cgd     Null,   	    /* .NULL */
    202   1.75        tv     ExObjdir,	    /* .OBJDIR */
    203    1.1       cgd     Order,  	    /* .ORDER */
    204   1.18  christos     Parallel,	    /* .PARALLEL */
    205    1.5       cgd     ExPath,	    /* .PATH */
    206   1.22  christos     Phony,	    /* .PHONY */
    207   1.48       sjg #ifdef POSIX
    208   1.48       sjg     Posix,	    /* .POSIX */
    209   1.48       sjg #endif
    210    1.1       cgd     Precious,	    /* .PRECIOUS */
    211    1.5       cgd     ExShell,	    /* .SHELL */
    212    1.1       cgd     Silent,	    /* .SILENT */
    213    1.1       cgd     SingleShell,    /* .SINGLESHELL */
    214    1.1       cgd     Suffixes,	    /* .SUFFIXES */
    215   1.18  christos     Wait,	    /* .WAIT */
    216    1.5       cgd     Attribute	    /* Generic attribute */
    217    1.1       cgd } ParseSpecial;
    218    1.1       cgd 
    219    1.5       cgd static ParseSpecial specType;
    220    1.1       cgd 
    221   1.77  christos #define	LPAREN	'('
    222   1.77  christos #define	RPAREN	')'
    223    1.1       cgd /*
    224    1.1       cgd  * Predecessor node for handling .ORDER. Initialized to NILGNODE when .ORDER
    225    1.1       cgd  * seen, then set to each successive source on the line.
    226    1.1       cgd  */
    227    1.1       cgd static GNode	*predecessor;
    228    1.1       cgd 
    229    1.1       cgd /*
    230    1.1       cgd  * The parseKeywords table is searched using binary search when deciding
    231    1.1       cgd  * if a target or source is special. The 'spec' field is the ParseSpecial
    232    1.1       cgd  * type of the keyword ("Not" if the keyword isn't special as a target) while
    233    1.1       cgd  * the 'op' field is the operator to apply to the list of targets if the
    234    1.1       cgd  * keyword is used as a source ("0" if the keyword isn't special as a source)
    235    1.1       cgd  */
    236    1.1       cgd static struct {
    237   1.93  christos     const char   *name;    	/* Name of keyword */
    238    1.1       cgd     ParseSpecial  spec;	    	/* Type when used as a target */
    239    1.1       cgd     int	    	  op;	    	/* Operator when used as a source */
    240    1.1       cgd } parseKeywords[] = {
    241    1.1       cgd { ".BEGIN", 	  Begin,    	0 },
    242    1.1       cgd { ".DEFAULT",	  Default,  	0 },
    243    1.1       cgd { ".END",   	  End,	    	0 },
    244    1.1       cgd { ".EXEC",	  Attribute,   	OP_EXEC },
    245    1.1       cgd { ".IGNORE",	  Ignore,   	OP_IGNORE },
    246    1.1       cgd { ".INCLUDES",	  Includes, 	0 },
    247    1.1       cgd { ".INTERRUPT",	  Interrupt,	0 },
    248    1.1       cgd { ".INVISIBLE",	  Attribute,   	OP_INVISIBLE },
    249    1.1       cgd { ".JOIN",  	  Attribute,   	OP_JOIN },
    250    1.1       cgd { ".LIBS",  	  Libs,	    	0 },
    251   1.29  christos { ".MADE",	  Attribute,	OP_MADE },
    252    1.1       cgd { ".MAIN",	  Main,		0 },
    253    1.1       cgd { ".MAKE",  	  Attribute,   	OP_MAKE },
    254    1.1       cgd { ".MAKEFLAGS",	  MFlags,   	0 },
    255    1.1       cgd { ".MFLAGS",	  MFlags,   	0 },
    256   1.32       gwr { ".NOPATH",	  NoPath,	OP_NOPATH },
    257    1.1       cgd { ".NOTMAIN",	  Attribute,   	OP_NOTMAIN },
    258    1.1       cgd { ".NOTPARALLEL", NotParallel,	0 },
    259   1.18  christos { ".NO_PARALLEL", NotParallel,	0 },
    260    1.1       cgd { ".NULL",  	  Null,	    	0 },
    261   1.75        tv { ".OBJDIR",	  ExObjdir,	0 },
    262   1.14        ws { ".OPTIONAL",	  Attribute,   	OP_OPTIONAL },
    263    1.1       cgd { ".ORDER", 	  Order,    	0 },
    264   1.18  christos { ".PARALLEL",	  Parallel,	0 },
    265    1.5       cgd { ".PATH",	  ExPath,	0 },
    266   1.22  christos { ".PHONY",	  Phony,	OP_PHONY },
    267   1.48       sjg #ifdef POSIX
    268   1.48       sjg { ".POSIX",	  Posix,	0 },
    269   1.48       sjg #endif
    270    1.1       cgd { ".PRECIOUS",	  Precious, 	OP_PRECIOUS },
    271    1.1       cgd { ".RECURSIVE",	  Attribute,	OP_MAKE },
    272    1.5       cgd { ".SHELL", 	  ExShell,    	0 },
    273    1.1       cgd { ".SILENT",	  Silent,   	OP_SILENT },
    274    1.1       cgd { ".SINGLESHELL", SingleShell,	0 },
    275    1.1       cgd { ".SUFFIXES",	  Suffixes, 	0 },
    276    1.1       cgd { ".USE",   	  Attribute,   	OP_USE },
    277   1.71  christos { ".USEBEFORE",   Attribute,   	OP_USEBEFORE },
    278   1.18  christos { ".WAIT",	  Wait, 	0 },
    279    1.1       cgd };
    280    1.1       cgd 
    281   1.84       wiz static int ParseIsEscaped(const char *, const char *);
    282  1.122       dsl static void ParseErrorInternal(const char *, size_t, int, const char *, ...)
    283   1.53        is      __attribute__((__format__(__printf__, 4, 5)));
    284  1.127       dsl static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list)
    285  1.127       dsl      __attribute__((__format__(__printf__, 5, 0)));
    286  1.120       dsl static int ParseFindKeyword(const char *);
    287   1.84       wiz static int ParseLinkSrc(ClientData, ClientData);
    288   1.84       wiz static int ParseDoOp(ClientData, ClientData);
    289  1.120       dsl static void ParseDoSrc(int, const char *);
    290   1.84       wiz static int ParseFindMain(ClientData, ClientData);
    291   1.84       wiz static int ParseAddDir(ClientData, ClientData);
    292   1.84       wiz static int ParseClearPath(ClientData, ClientData);
    293   1.84       wiz static void ParseDoDependency(char *);
    294   1.84       wiz static int ParseAddCmd(ClientData, ClientData);
    295   1.84       wiz static void ParseHasCommands(ClientData);
    296   1.84       wiz static void ParseDoInclude(char *);
    297  1.122       dsl static void ParseSetParseFile(const char *);
    298    1.5       cgd #ifdef SYSVINCLUDE
    299   1.84       wiz static void ParseTraditionalInclude(char *);
    300    1.5       cgd #endif
    301  1.123       dsl static int ParseEOF(void);
    302   1.84       wiz static char *ParseReadLine(void);
    303   1.84       wiz static void ParseFinishLine(void);
    304   1.84       wiz static void ParseMark(GNode *);
    305    1.5       cgd 
    306   1.56  christos extern int  maxJobs;
    307   1.56  christos 
    308   1.77  christos 
    309   1.77  christos /*-
    310   1.77  christos  *----------------------------------------------------------------------
    311   1.77  christos  * ParseIsEscaped --
    312   1.77  christos  *	Check if the current character is escaped on the current line
    313   1.77  christos  *
    314   1.77  christos  * Results:
    315   1.77  christos  *	0 if the character is not backslash escaped, 1 otherwise
    316   1.77  christos  *
    317   1.77  christos  * Side Effects:
    318   1.77  christos  *	None
    319   1.77  christos  *----------------------------------------------------------------------
    320   1.77  christos  */
    321   1.77  christos static int
    322   1.84       wiz ParseIsEscaped(const char *line, const char *c)
    323   1.77  christos {
    324   1.77  christos     int active = 0;
    325   1.77  christos     for (;;) {
    326   1.77  christos 	if (line == c)
    327   1.77  christos 	    return active;
    328   1.77  christos 	if (*--c != '\\')
    329   1.77  christos 	    return active;
    330   1.77  christos 	active = !active;
    331   1.77  christos     }
    332   1.77  christos }
    333   1.77  christos 
    334    1.1       cgd /*-
    335    1.1       cgd  *----------------------------------------------------------------------
    336    1.1       cgd  * ParseFindKeyword --
    337    1.1       cgd  *	Look in the table of keywords for one matching the given string.
    338    1.1       cgd  *
    339   1.84       wiz  * Input:
    340   1.84       wiz  *	str		String to find
    341   1.84       wiz  *
    342    1.1       cgd  * Results:
    343    1.1       cgd  *	The index of the keyword, or -1 if it isn't there.
    344    1.1       cgd  *
    345    1.1       cgd  * Side Effects:
    346    1.1       cgd  *	None
    347    1.1       cgd  *----------------------------------------------------------------------
    348    1.1       cgd  */
    349    1.1       cgd static int
    350  1.120       dsl ParseFindKeyword(const char *str)
    351    1.1       cgd {
    352   1.84       wiz     int    start, end, cur;
    353   1.84       wiz     int    diff;
    354   1.27  christos 
    355    1.1       cgd     start = 0;
    356    1.1       cgd     end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
    357    1.1       cgd 
    358    1.1       cgd     do {
    359    1.1       cgd 	cur = start + ((end - start) / 2);
    360  1.103  christos 	diff = strcmp(str, parseKeywords[cur].name);
    361    1.1       cgd 
    362    1.1       cgd 	if (diff == 0) {
    363    1.1       cgd 	    return (cur);
    364    1.1       cgd 	} else if (diff < 0) {
    365    1.1       cgd 	    end = cur - 1;
    366    1.1       cgd 	} else {
    367    1.1       cgd 	    start = cur + 1;
    368    1.1       cgd 	}
    369    1.1       cgd     } while (start <= end);
    370    1.1       cgd     return (-1);
    371    1.1       cgd }
    372    1.1       cgd 
    373    1.1       cgd /*-
    374   1.38  christos  * ParseVErrorInternal  --
    375    1.1       cgd  *	Error message abort function for parsing. Prints out the context
    376    1.1       cgd  *	of the error (line number and file) as well as the message with
    377    1.1       cgd  *	two optional arguments.
    378    1.1       cgd  *
    379    1.1       cgd  * Results:
    380    1.1       cgd  *	None
    381    1.1       cgd  *
    382    1.1       cgd  * Side Effects:
    383    1.1       cgd  *	"fatals" is incremented if the level is PARSE_FATAL.
    384    1.1       cgd  */
    385    1.1       cgd /* VARARGS */
    386   1.38  christos static void
    387  1.127       dsl ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type,
    388  1.122       dsl     const char *fmt, va_list ap)
    389   1.38  christos {
    390   1.56  christos 	static Boolean fatal_warning_error_printed = FALSE;
    391   1.56  christos 
    392  1.127       dsl 	(void)fprintf(f, "%s: \"", progname);
    393   1.63  christos 
    394   1.55       sjg 	if (*cfname != '/') {
    395   1.93  christos 		char *cp;
    396   1.93  christos 		const char *dir;
    397   1.55       sjg 
    398   1.55       sjg 		/*
    399   1.55       sjg 		 * Nothing is more anoying than not knowing which Makefile
    400   1.55       sjg 		 * is the culprit.
    401   1.55       sjg 		 */
    402   1.55       sjg 		dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp);
    403   1.63  christos 		if (dir == NULL || *dir == '\0' ||
    404   1.55       sjg 		    (*dir == '.' && dir[1] == '\0'))
    405   1.55       sjg 			dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
    406   1.63  christos 		if (dir == NULL)
    407   1.63  christos 			dir = ".";
    408   1.55       sjg 
    409  1.127       dsl 		(void)fprintf(f, "%s/%s", dir, cfname);
    410   1.55       sjg 	} else
    411  1.127       dsl 		(void)fprintf(f, "%s", cfname);
    412   1.63  christos 
    413  1.127       dsl 	(void)fprintf(f, "\" line %d: ", (int)clineno);
    414   1.38  christos 	if (type == PARSE_WARNING)
    415  1.127       dsl 		(void)fprintf(f, "warning: ");
    416  1.127       dsl 	(void)vfprintf(f, fmt, ap);
    417  1.127       dsl 	(void)fprintf(f, "\n");
    418  1.127       dsl 	(void)fflush(f);
    419   1.56  christos 	if (type == PARSE_FATAL || parseWarnFatal)
    420   1.38  christos 		fatals += 1;
    421   1.56  christos 	if (parseWarnFatal && !fatal_warning_error_printed) {
    422   1.56  christos 		Error("parsing warnings being treated as errors");
    423   1.56  christos 		fatal_warning_error_printed = TRUE;
    424   1.56  christos 	}
    425   1.38  christos }
    426   1.38  christos 
    427   1.38  christos /*-
    428   1.38  christos  * ParseErrorInternal  --
    429   1.38  christos  *	Error function
    430   1.38  christos  *
    431   1.38  christos  * Results:
    432   1.38  christos  *	None
    433   1.38  christos  *
    434   1.38  christos  * Side Effects:
    435   1.38  christos  *	None
    436   1.38  christos  */
    437   1.38  christos /* VARARGS */
    438   1.38  christos static void
    439  1.122       dsl ParseErrorInternal(const char *cfname, size_t clineno, int type,
    440  1.122       dsl     const char *fmt, ...)
    441   1.38  christos {
    442   1.38  christos 	va_list ap;
    443   1.84       wiz 
    444   1.38  christos 	va_start(ap, fmt);
    445  1.127       dsl 	ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap);
    446   1.38  christos 	va_end(ap);
    447  1.127       dsl 
    448  1.127       dsl 	if (debug_file != NULL && debug_file != stderr) {
    449  1.127       dsl 		va_start(ap, fmt);
    450  1.127       dsl 		ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap);
    451  1.127       dsl 		va_end(ap);
    452  1.127       dsl 	}
    453   1.38  christos }
    454   1.38  christos 
    455   1.38  christos /*-
    456   1.38  christos  * Parse_Error  --
    457   1.38  christos  *	External interface to ParseErrorInternal; uses the default filename
    458   1.38  christos  *	Line number.
    459   1.38  christos  *
    460   1.38  christos  * Results:
    461   1.38  christos  *	None
    462   1.38  christos  *
    463   1.38  christos  * Side Effects:
    464   1.38  christos  *	None
    465   1.38  christos  */
    466   1.38  christos /* VARARGS */
    467    1.1       cgd void
    468   1.93  christos Parse_Error(int type, const char *fmt, ...)
    469    1.1       cgd {
    470    1.1       cgd 	va_list ap;
    471   1.84       wiz 
    472    1.5       cgd 	va_start(ap, fmt);
    473  1.127       dsl 	ParseVErrorInternal(stderr, curFile->fname, curFile->lineno,
    474  1.127       dsl 		    type, fmt, ap);
    475    1.1       cgd 	va_end(ap);
    476  1.127       dsl 
    477  1.127       dsl 	if (debug_file != NULL && debug_file != stderr) {
    478  1.127       dsl 		va_start(ap, fmt);
    479  1.127       dsl 		ParseVErrorInternal(debug_file, curFile->fname, curFile->lineno,
    480  1.127       dsl 			    type, fmt, ap);
    481  1.127       dsl 		va_end(ap);
    482  1.127       dsl 	}
    483    1.1       cgd }
    484    1.1       cgd 
    485    1.1       cgd /*-
    486    1.1       cgd  *---------------------------------------------------------------------
    487    1.1       cgd  * ParseLinkSrc  --
    488    1.1       cgd  *	Link the parent node to its new child. Used in a Lst_ForEach by
    489    1.1       cgd  *	ParseDoDependency. If the specType isn't 'Not', the parent
    490    1.1       cgd  *	isn't linked as a parent of the child.
    491    1.1       cgd  *
    492   1.84       wiz  * Input:
    493   1.84       wiz  *	pgnp		The parent node
    494   1.84       wiz  *	cgpn		The child node
    495   1.84       wiz  *
    496    1.1       cgd  * Results:
    497    1.1       cgd  *	Always = 0
    498    1.1       cgd  *
    499    1.1       cgd  * Side Effects:
    500    1.1       cgd  *	New elements are added to the parents list of cgn and the
    501    1.1       cgd  *	children list of cgn. the unmade field of pgn is updated
    502    1.1       cgd  *	to reflect the additional child.
    503    1.1       cgd  *---------------------------------------------------------------------
    504    1.1       cgd  */
    505    1.1       cgd static int
    506   1.84       wiz ParseLinkSrc(ClientData pgnp, ClientData cgnp)
    507    1.1       cgd {
    508  1.105  christos     GNode          *pgn = (GNode *)pgnp;
    509  1.105  christos     GNode          *cgn = (GNode *)cgnp;
    510   1.52   mycroft 
    511   1.47   mycroft     if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts))
    512  1.103  christos 	pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts));
    513  1.119       dsl     (void)Lst_AtEnd(pgn->children, cgn);
    514   1.52   mycroft     if (specType == Not)
    515  1.119       dsl 	    (void)Lst_AtEnd(cgn->parents, pgn);
    516   1.52   mycroft     pgn->unmade += 1;
    517  1.109       dsl     if (DEBUG(PARSE)) {
    518  1.116       dsl 	fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name);
    519  1.109       dsl 	Targ_PrintNode(pgn, 0);
    520  1.109       dsl 	Targ_PrintNode(cgn, 0);
    521  1.109       dsl     }
    522    1.1       cgd     return (0);
    523    1.1       cgd }
    524    1.1       cgd 
    525    1.1       cgd /*-
    526    1.1       cgd  *---------------------------------------------------------------------
    527    1.1       cgd  * ParseDoOp  --
    528    1.1       cgd  *	Apply the parsed operator to the given target node. Used in a
    529    1.1       cgd  *	Lst_ForEach call by ParseDoDependency once all targets have
    530    1.1       cgd  *	been found and their operator parsed. If the previous and new
    531    1.1       cgd  *	operators are incompatible, a major error is taken.
    532    1.1       cgd  *
    533   1.84       wiz  * Input:
    534   1.84       wiz  *	gnp		The node to which the operator is to be applied
    535   1.84       wiz  *	opp		The operator to apply
    536   1.84       wiz  *
    537    1.1       cgd  * Results:
    538    1.1       cgd  *	Always 0
    539    1.1       cgd  *
    540    1.1       cgd  * Side Effects:
    541    1.1       cgd  *	The type field of the node is altered to reflect any new bits in
    542    1.1       cgd  *	the op.
    543    1.1       cgd  *---------------------------------------------------------------------
    544    1.1       cgd  */
    545    1.1       cgd static int
    546   1.84       wiz ParseDoOp(ClientData gnp, ClientData opp)
    547    1.1       cgd {
    548  1.105  christos     GNode          *gn = (GNode *)gnp;
    549  1.105  christos     int             op = *(int *)opp;
    550    1.1       cgd     /*
    551    1.1       cgd      * If the dependency mask of the operator and the node don't match and
    552    1.1       cgd      * the node has actually had an operator applied to it before, and
    553   1.27  christos      * the operator actually has some dependency information in it, complain.
    554    1.1       cgd      */
    555    1.1       cgd     if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
    556    1.1       cgd 	!OP_NOP(gn->type) && !OP_NOP(op))
    557    1.1       cgd     {
    558   1.97  christos 	Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
    559    1.1       cgd 	return (1);
    560    1.1       cgd     }
    561    1.1       cgd 
    562    1.1       cgd     if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
    563    1.1       cgd 	/*
    564    1.1       cgd 	 * If the node was the object of a :: operator, we need to create a
    565    1.1       cgd 	 * new instance of it for the children and commands on this dependency
    566    1.1       cgd 	 * line. The new instance is placed on the 'cohorts' list of the
    567    1.1       cgd 	 * initial one (note the initial one is not on its own cohorts list)
    568    1.1       cgd 	 * and the new instance is linked to all parents of the initial
    569    1.1       cgd 	 * instance.
    570    1.1       cgd 	 */
    571   1.84       wiz 	GNode	*cohort;
    572   1.27  christos 
    573   1.33   mycroft 	/*
    574   1.46   mycroft 	 * Propagate copied bits to the initial node.  They'll be propagated
    575   1.46   mycroft 	 * back to the rest of the cohorts later.
    576   1.33   mycroft 	 */
    577   1.46   mycroft 	gn->type |= op & ~OP_OPMASK;
    578   1.33   mycroft 
    579  1.120       dsl 	cohort = Targ_FindNode(gn->name, TARG_NOHASH);
    580    1.1       cgd 	/*
    581    1.1       cgd 	 * Make the cohort invisible as well to avoid duplicating it into
    582    1.1       cgd 	 * other variables. True, parents of this target won't tend to do
    583    1.1       cgd 	 * anything with their local variables, but better safe than
    584   1.46   mycroft 	 * sorry. (I think this is pointless now, since the relevant list
    585   1.46   mycroft 	 * traversals will no longer see this node anyway. -mycroft)
    586    1.1       cgd 	 */
    587   1.46   mycroft 	cohort->type = op | OP_INVISIBLE;
    588  1.119       dsl 	(void)Lst_AtEnd(gn->cohorts, cohort);
    589   1.83        pk 	cohort->centurion = gn;
    590   1.83        pk 	gn->unmade_cohorts += 1;
    591  1.120       dsl 	snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
    592  1.120       dsl 		gn->unmade_cohorts);
    593   1.46   mycroft     } else {
    594    1.1       cgd 	/*
    595   1.46   mycroft 	 * We don't want to nuke any previous flags (whatever they were) so we
    596   1.46   mycroft 	 * just OR the new operator into the old
    597    1.1       cgd 	 */
    598   1.46   mycroft 	gn->type |= op;
    599    1.1       cgd     }
    600   1.33   mycroft 
    601    1.1       cgd     return (0);
    602    1.1       cgd }
    603    1.1       cgd 
    604   1.27  christos /*-
    605   1.18  christos  *---------------------------------------------------------------------
    606    1.1       cgd  * ParseDoSrc  --
    607    1.1       cgd  *	Given the name of a source, figure out if it is an attribute
    608    1.1       cgd  *	and apply it to the targets if it is. Else decide if there is
    609    1.1       cgd  *	some attribute which should be applied *to* the source because
    610    1.1       cgd  *	of some special target and apply it if so. Otherwise, make the
    611    1.1       cgd  *	source be a child of the targets in the list 'targets'
    612    1.1       cgd  *
    613   1.84       wiz  * Input:
    614   1.84       wiz  *	tOp		operator (if any) from special targets
    615   1.84       wiz  *	src		name of the source to handle
    616   1.84       wiz  *
    617    1.1       cgd  * Results:
    618    1.1       cgd  *	None
    619    1.1       cgd  *
    620    1.1       cgd  * Side Effects:
    621    1.1       cgd  *	Operator bits may be added to the list of targets or to the source.
    622    1.1       cgd  *	The targets may have a new source added to their lists of children.
    623    1.1       cgd  *---------------------------------------------------------------------
    624    1.1       cgd  */
    625    1.1       cgd static void
    626  1.120       dsl ParseDoSrc(int tOp, const char *src)
    627    1.1       cgd {
    628   1.18  christos     GNode	*gn = NULL;
    629  1.120       dsl     static int wait_number = 0;
    630  1.120       dsl     char wait_src[16];
    631    1.1       cgd 
    632   1.40  christos     if (*src == '.' && isupper ((unsigned char)src[1])) {
    633    1.1       cgd 	int keywd = ParseFindKeyword(src);
    634    1.1       cgd 	if (keywd != -1) {
    635   1.18  christos 	    int op = parseKeywords[keywd].op;
    636   1.18  christos 	    if (op != 0) {
    637  1.119       dsl 		Lst_ForEach(targets, ParseDoOp, &op);
    638   1.18  christos 		return;
    639   1.18  christos 	    }
    640   1.18  christos 	    if (parseKeywords[keywd].spec == Wait) {
    641  1.120       dsl 		/*
    642  1.120       dsl 		 * We add a .WAIT node in the dependency list.
    643  1.120       dsl 		 * After any dynamic dependencies (and filename globbing)
    644  1.120       dsl 		 * have happened, it is given a dependency on the each
    645  1.120       dsl 		 * previous child back to and previous .WAIT node.
    646  1.120       dsl 		 * The next child won't be scheduled until the .WAIT node
    647  1.120       dsl 		 * is built.
    648  1.120       dsl 		 * We give each .WAIT node a unique name (mainly for diag).
    649  1.120       dsl 		 */
    650  1.120       dsl 		snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
    651  1.120       dsl 		gn = Targ_FindNode(wait_src, TARG_NOHASH);
    652  1.120       dsl 		gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
    653  1.120       dsl 		Lst_ForEach(targets, ParseLinkSrc, gn);
    654   1.18  christos 		return;
    655   1.18  christos 	    }
    656    1.1       cgd 	}
    657    1.1       cgd     }
    658   1.18  christos 
    659   1.18  christos     switch (specType) {
    660   1.18  christos     case Main:
    661    1.1       cgd 	/*
    662    1.1       cgd 	 * If we have noted the existence of a .MAIN, it means we need
    663    1.1       cgd 	 * to add the sources of said target to the list of things
    664    1.1       cgd 	 * to create. The string 'src' is likely to be free, so we
    665    1.1       cgd 	 * must make a new copy of it. Note that this will only be
    666    1.1       cgd 	 * invoked if the user didn't specify a target on the command
    667    1.1       cgd 	 * line. This is to allow #ifmake's to succeed, or something...
    668    1.1       cgd 	 */
    669  1.119       dsl 	(void)Lst_AtEnd(create, estrdup(src));
    670    1.1       cgd 	/*
    671  1.118       dsl 	 * Add the name to the .TARGETS variable as well, so the user can
    672    1.1       cgd 	 * employ that, if desired.
    673    1.1       cgd 	 */
    674    1.1       cgd 	Var_Append(".TARGETS", src, VAR_GLOBAL);
    675   1.18  christos 	return;
    676   1.18  christos 
    677   1.18  christos     case Order:
    678    1.1       cgd 	/*
    679    1.1       cgd 	 * Create proper predecessor/successor links between the previous
    680    1.1       cgd 	 * source and the current one.
    681    1.1       cgd 	 */
    682    1.1       cgd 	gn = Targ_FindNode(src, TARG_CREATE);
    683    1.1       cgd 	if (predecessor != NILGNODE) {
    684  1.120       dsl 	    (void)Lst_AtEnd(predecessor->order_succ, gn);
    685  1.120       dsl 	    (void)Lst_AtEnd(gn->order_pred, predecessor);
    686  1.109       dsl 	    if (DEBUG(PARSE)) {
    687  1.116       dsl 		fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n",
    688  1.109       dsl 			predecessor->name, gn->name);
    689  1.109       dsl 		Targ_PrintNode(predecessor, 0);
    690  1.109       dsl 		Targ_PrintNode(gn, 0);
    691  1.109       dsl 	    }
    692    1.1       cgd 	}
    693    1.1       cgd 	/*
    694    1.1       cgd 	 * The current source now becomes the predecessor for the next one.
    695    1.1       cgd 	 */
    696    1.1       cgd 	predecessor = gn;
    697   1.18  christos 	break;
    698   1.18  christos 
    699   1.18  christos     default:
    700    1.1       cgd 	/*
    701    1.1       cgd 	 * If the source is not an attribute, we need to find/create
    702    1.1       cgd 	 * a node for it. After that we can apply any operator to it
    703    1.1       cgd 	 * from a special target or link it to its parents, as
    704    1.1       cgd 	 * appropriate.
    705    1.1       cgd 	 *
    706    1.1       cgd 	 * In the case of a source that was the object of a :: operator,
    707    1.1       cgd 	 * the attribute is applied to all of its instances (as kept in
    708    1.1       cgd 	 * the 'cohorts' list of the node) or all the cohorts are linked
    709    1.1       cgd 	 * to all the targets.
    710    1.1       cgd 	 */
    711  1.118       dsl 
    712  1.118       dsl 	/* Find/create the 'src' node and attach to all targets */
    713   1.97  christos 	gn = Targ_FindNode(src, TARG_CREATE);
    714    1.1       cgd 	if (tOp) {
    715    1.1       cgd 	    gn->type |= tOp;
    716    1.1       cgd 	} else {
    717  1.119       dsl 	    Lst_ForEach(targets, ParseLinkSrc, gn);
    718    1.1       cgd 	}
    719   1.18  christos 	break;
    720   1.18  christos     }
    721    1.1       cgd }
    722    1.1       cgd 
    723    1.1       cgd /*-
    724    1.1       cgd  *-----------------------------------------------------------------------
    725    1.1       cgd  * ParseFindMain --
    726    1.1       cgd  *	Find a real target in the list and set it to be the main one.
    727    1.1       cgd  *	Called by ParseDoDependency when a main target hasn't been found
    728    1.1       cgd  *	yet.
    729    1.1       cgd  *
    730   1.84       wiz  * Input:
    731   1.84       wiz  *	gnp		Node to examine
    732   1.84       wiz  *
    733    1.1       cgd  * Results:
    734    1.1       cgd  *	0 if main not found yet, 1 if it is.
    735    1.1       cgd  *
    736    1.1       cgd  * Side Effects:
    737    1.1       cgd  *	mainNode is changed and Targ_SetMain is called.
    738    1.1       cgd  *
    739    1.1       cgd  *-----------------------------------------------------------------------
    740    1.1       cgd  */
    741    1.1       cgd static int
    742   1.84       wiz ParseFindMain(ClientData gnp, ClientData dummy)
    743    1.1       cgd {
    744  1.105  christos     GNode   	  *gn = (GNode *)gnp;
    745   1.30  christos     if ((gn->type & OP_NOTARGET) == 0) {
    746    1.1       cgd 	mainNode = gn;
    747    1.1       cgd 	Targ_SetMain(gn);
    748    1.9       jtc 	return (dummy ? 1 : 1);
    749    1.1       cgd     } else {
    750    1.9       jtc 	return (dummy ? 0 : 0);
    751    1.1       cgd     }
    752    1.1       cgd }
    753    1.1       cgd 
    754    1.1       cgd /*-
    755    1.1       cgd  *-----------------------------------------------------------------------
    756    1.1       cgd  * ParseAddDir --
    757    1.1       cgd  *	Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
    758    1.1       cgd  *
    759    1.1       cgd  * Results:
    760    1.1       cgd  *	=== 0
    761    1.1       cgd  *
    762    1.1       cgd  * Side Effects:
    763    1.1       cgd  *	See Dir_AddDir.
    764    1.1       cgd  *
    765    1.1       cgd  *-----------------------------------------------------------------------
    766    1.1       cgd  */
    767    1.1       cgd static int
    768   1.84       wiz ParseAddDir(ClientData path, ClientData name)
    769    1.1       cgd {
    770  1.105  christos     (void)Dir_AddDir((Lst) path, (char *)name);
    771    1.1       cgd     return(0);
    772    1.1       cgd }
    773    1.1       cgd 
    774    1.1       cgd /*-
    775    1.1       cgd  *-----------------------------------------------------------------------
    776    1.1       cgd  * ParseClearPath --
    777    1.1       cgd  *	Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
    778    1.1       cgd  *
    779    1.1       cgd  * Results:
    780    1.1       cgd  *	=== 0
    781    1.1       cgd  *
    782    1.1       cgd  * Side Effects:
    783    1.1       cgd  *	See Dir_ClearPath
    784    1.1       cgd  *
    785    1.1       cgd  *-----------------------------------------------------------------------
    786    1.1       cgd  */
    787    1.1       cgd static int
    788   1.84       wiz ParseClearPath(ClientData path, ClientData dummy)
    789    1.1       cgd {
    790    1.9       jtc     Dir_ClearPath((Lst) path);
    791    1.9       jtc     return(dummy ? 0 : 0);
    792    1.1       cgd }
    793    1.1       cgd 
    794    1.1       cgd /*-
    795    1.1       cgd  *---------------------------------------------------------------------
    796    1.1       cgd  * ParseDoDependency  --
    797    1.1       cgd  *	Parse the dependency line in line.
    798    1.1       cgd  *
    799   1.84       wiz  * Input:
    800   1.84       wiz  *	line		the line to parse
    801   1.84       wiz  *
    802    1.1       cgd  * Results:
    803    1.1       cgd  *	None
    804    1.1       cgd  *
    805    1.1       cgd  * Side Effects:
    806    1.1       cgd  *	The nodes of the sources are linked as children to the nodes of the
    807    1.1       cgd  *	targets. Some nodes may be created.
    808    1.1       cgd  *
    809    1.1       cgd  *	We parse a dependency line by first extracting words from the line and
    810    1.1       cgd  * finding nodes in the list of all targets with that name. This is done
    811    1.1       cgd  * until a character is encountered which is an operator character. Currently
    812    1.1       cgd  * these are only ! and :. At this point the operator is parsed and the
    813    1.1       cgd  * pointer into the line advanced until the first source is encountered.
    814    1.1       cgd  * 	The parsed operator is applied to each node in the 'targets' list,
    815    1.1       cgd  * which is where the nodes found for the targets are kept, by means of
    816    1.1       cgd  * the ParseDoOp function.
    817    1.1       cgd  *	The sources are read in much the same way as the targets were except
    818    1.1       cgd  * that now they are expanded using the wildcarding scheme of the C-Shell
    819    1.1       cgd  * and all instances of the resulting words in the list of all targets
    820    1.1       cgd  * are found. Each of the resulting nodes is then linked to each of the
    821    1.1       cgd  * targets as one of its children.
    822    1.1       cgd  *	Certain targets are handled specially. These are the ones detailed
    823    1.1       cgd  * by the specType variable.
    824    1.1       cgd  *	The storing of transformation rules is also taken care of here.
    825    1.1       cgd  * A target is recognized as a transformation rule by calling
    826    1.1       cgd  * Suff_IsTransform. If it is a transformation rule, its node is gotten
    827    1.1       cgd  * from the suffix module via Suff_AddTransform rather than the standard
    828    1.1       cgd  * Targ_FindNode in the target module.
    829    1.1       cgd  *---------------------------------------------------------------------
    830    1.1       cgd  */
    831    1.1       cgd static void
    832   1.84       wiz ParseDoDependency(char *line)
    833    1.1       cgd {
    834    1.9       jtc     char  	   *cp;		/* our current position */
    835   1.98  christos     GNode 	   *gn = NULL;	/* a general purpose temporary node */
    836    1.9       jtc     int             op;		/* the operator on the line */
    837    1.1       cgd     char            savec;	/* a place to save a character */
    838    1.1       cgd     Lst    	    paths;   	/* List of search paths to alter when parsing
    839    1.1       cgd 				 * a list of .PATH targets */
    840    1.1       cgd     int	    	    tOp;    	/* operator from special target */
    841   1.18  christos     Lst	    	    sources;	/* list of archive source names after
    842   1.18  christos 				 * expansion */
    843    1.1       cgd     Lst 	    curTargs;	/* list of target names to be found and added
    844    1.1       cgd 				 * to the targets list */
    845   1.77  christos     char	   *lstart = line;
    846    1.1       cgd 
    847  1.120       dsl     if (DEBUG(PARSE))
    848  1.120       dsl 	fprintf(debug_file, "ParseDoDependency(%s)\n", line);
    849    1.1       cgd     tOp = 0;
    850    1.1       cgd 
    851    1.1       cgd     specType = Not;
    852    1.1       cgd     paths = (Lst)NULL;
    853    1.1       cgd 
    854    1.1       cgd     curTargs = Lst_Init(FALSE);
    855   1.27  christos 
    856    1.1       cgd     do {
    857  1.121       dsl 	for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
    858  1.121       dsl 		     !(isspace((unsigned char)*cp) ||
    859  1.121       dsl 			 *cp == '!' || *cp == ':' || *cp == LPAREN));
    860  1.121       dsl 		 cp++) {
    861    1.1       cgd 	    if (*cp == '$') {
    862    1.1       cgd 		/*
    863    1.1       cgd 		 * Must be a dynamic source (would have been expanded
    864    1.1       cgd 		 * otherwise), so call the Var module to parse the puppy
    865    1.1       cgd 		 * so we can safely advance beyond it...There should be
    866    1.1       cgd 		 * no errors in this, as they would have been discovered
    867    1.1       cgd 		 * in the initial Var_Subst and we wouldn't be here.
    868    1.1       cgd 		 */
    869    1.1       cgd 		int 	length;
    870  1.114  christos 		void    *freeIt;
    871    1.1       cgd 		char	*result;
    872    1.1       cgd 
    873  1.114  christos 		result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt);
    874  1.114  christos 		if (freeIt)
    875  1.114  christos 		    free(freeIt);
    876    1.1       cgd 		cp += length-1;
    877    1.1       cgd 	    }
    878    1.1       cgd 	}
    879  1.121       dsl 
    880   1.77  christos 	if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) {
    881    1.1       cgd 	    /*
    882    1.1       cgd 	     * Archives must be handled specially to make sure the OP_ARCHV
    883    1.1       cgd 	     * flag is set in their 'type' field, for one thing, and because
    884    1.1       cgd 	     * things like "archive(file1.o file2.o file3.o)" are permissible.
    885    1.1       cgd 	     * Arch_ParseArchive will set 'line' to be the first non-blank
    886    1.1       cgd 	     * after the archive-spec. It creates/finds nodes for the members
    887    1.1       cgd 	     * and places them on the given list, returning SUCCESS if all
    888    1.1       cgd 	     * went well and FAILURE if there was an error in the
    889    1.1       cgd 	     * specification. On error, line should remain untouched.
    890    1.1       cgd 	     */
    891   1.97  christos 	    if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) {
    892   1.97  christos 		Parse_Error(PARSE_FATAL,
    893    1.1       cgd 			     "Error in archive specification: \"%s\"", line);
    894  1.112  christos 		goto out;
    895    1.1       cgd 	    } else {
    896    1.1       cgd 		continue;
    897    1.1       cgd 	    }
    898    1.1       cgd 	}
    899    1.1       cgd 	savec = *cp;
    900   1.27  christos 
    901    1.1       cgd 	if (!*cp) {
    902    1.1       cgd 	    /*
    903    1.1       cgd 	     * Ending a dependency line without an operator is a Bozo
    904   1.65  sommerfe 	     * no-no.  As a heuristic, this is also often triggered by
    905   1.65  sommerfe 	     * undetected conflicts from cvs/rcs merges.
    906    1.1       cgd 	     */
    907   1.65  sommerfe 	    if ((strncmp(line, "<<<<<<", 6) == 0) ||
    908   1.65  sommerfe 		(strncmp(line, "======", 6) == 0) ||
    909   1.65  sommerfe 		(strncmp(line, ">>>>>>", 6) == 0))
    910   1.97  christos 		Parse_Error(PARSE_FATAL,
    911   1.67  sommerfe 		    "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
    912   1.65  sommerfe 	    else
    913   1.97  christos 		Parse_Error(PARSE_FATAL, "Need an operator");
    914  1.112  christos 	    goto out;
    915    1.1       cgd 	}
    916    1.1       cgd 	*cp = '\0';
    917  1.118       dsl 
    918    1.1       cgd 	/*
    919    1.1       cgd 	 * Have a word in line. See if it's a special target and set
    920    1.1       cgd 	 * specType to match it.
    921    1.1       cgd 	 */
    922   1.40  christos 	if (*line == '.' && isupper ((unsigned char)line[1])) {
    923    1.1       cgd 	    /*
    924    1.1       cgd 	     * See if the target is a special target that must have it
    925   1.27  christos 	     * or its sources handled specially.
    926    1.1       cgd 	     */
    927    1.1       cgd 	    int keywd = ParseFindKeyword(line);
    928    1.1       cgd 	    if (keywd != -1) {
    929    1.5       cgd 		if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
    930    1.1       cgd 		    Parse_Error(PARSE_FATAL, "Mismatched special targets");
    931  1.112  christos 		    goto out;
    932    1.1       cgd 		}
    933   1.27  christos 
    934    1.1       cgd 		specType = parseKeywords[keywd].spec;
    935    1.1       cgd 		tOp = parseKeywords[keywd].op;
    936    1.1       cgd 
    937    1.1       cgd 		/*
    938    1.1       cgd 		 * Certain special targets have special semantics:
    939    1.1       cgd 		 *	.PATH		Have to set the dirSearchPath
    940    1.1       cgd 		 *			variable too
    941    1.1       cgd 		 *	.MAIN		Its sources are only used if
    942    1.1       cgd 		 *			nothing has been specified to
    943    1.1       cgd 		 *			create.
    944    1.1       cgd 		 *	.DEFAULT    	Need to create a node to hang
    945    1.1       cgd 		 *			commands on, but we don't want
    946    1.1       cgd 		 *			it in the graph, nor do we want
    947    1.1       cgd 		 *			it to be the Main Target, so we
    948    1.1       cgd 		 *			create it, set OP_NOTMAIN and
    949    1.1       cgd 		 *			add it to the list, setting
    950    1.1       cgd 		 *			DEFAULT to the new node for
    951    1.1       cgd 		 *			later use. We claim the node is
    952    1.1       cgd 		 *	    	    	A transformation rule to make
    953    1.1       cgd 		 *	    	    	life easier later, when we'll
    954    1.1       cgd 		 *	    	    	use Make_HandleUse to actually
    955    1.1       cgd 		 *	    	    	apply the .DEFAULT commands.
    956   1.22  christos 		 *	.PHONY		The list of targets
    957   1.32       gwr 		 *	.NOPATH		Don't search for file in the path
    958    1.1       cgd 		 *	.BEGIN
    959    1.1       cgd 		 *	.END
    960    1.1       cgd 		 *	.INTERRUPT  	Are not to be considered the
    961    1.1       cgd 		 *			main target.
    962    1.1       cgd 		 *  	.NOTPARALLEL	Make only one target at a time.
    963    1.1       cgd 		 *  	.SINGLESHELL	Create a shell for each command.
    964    1.1       cgd 		 *  	.ORDER	    	Must set initial predecessor to NIL
    965    1.1       cgd 		 */
    966    1.1       cgd 		switch (specType) {
    967    1.5       cgd 		    case ExPath:
    968    1.1       cgd 			if (paths == NULL) {
    969    1.1       cgd 			    paths = Lst_Init(FALSE);
    970    1.1       cgd 			}
    971  1.119       dsl 			(void)Lst_AtEnd(paths, dirSearchPath);
    972    1.1       cgd 			break;
    973    1.1       cgd 		    case Main:
    974    1.1       cgd 			if (!Lst_IsEmpty(create)) {
    975    1.1       cgd 			    specType = Not;
    976    1.1       cgd 			}
    977    1.1       cgd 			break;
    978    1.1       cgd 		    case Begin:
    979    1.1       cgd 		    case End:
    980    1.1       cgd 		    case Interrupt:
    981    1.1       cgd 			gn = Targ_FindNode(line, TARG_CREATE);
    982   1.99  christos 			gn->type |= OP_NOTMAIN|OP_SPECIAL;
    983  1.119       dsl 			(void)Lst_AtEnd(targets, gn);
    984    1.1       cgd 			break;
    985    1.1       cgd 		    case Default:
    986    1.1       cgd 			gn = Targ_NewGN(".DEFAULT");
    987    1.1       cgd 			gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
    988  1.119       dsl 			(void)Lst_AtEnd(targets, gn);
    989    1.1       cgd 			DEFAULT = gn;
    990    1.1       cgd 			break;
    991    1.1       cgd 		    case NotParallel:
    992  1.113       dsl 			maxJobs = 1;
    993    1.1       cgd 			break;
    994    1.1       cgd 		    case SingleShell:
    995   1.54  sommerfe 			compatMake = TRUE;
    996    1.1       cgd 			break;
    997    1.1       cgd 		    case Order:
    998    1.1       cgd 			predecessor = NILGNODE;
    999    1.1       cgd 			break;
   1000    1.5       cgd 		    default:
   1001    1.5       cgd 			break;
   1002    1.1       cgd 		}
   1003  1.103  christos 	    } else if (strncmp(line, ".PATH", 5) == 0) {
   1004    1.1       cgd 		/*
   1005    1.1       cgd 		 * .PATH<suffix> has to be handled specially.
   1006    1.1       cgd 		 * Call on the suffix module to give us a path to
   1007    1.1       cgd 		 * modify.
   1008    1.1       cgd 		 */
   1009    1.1       cgd 		Lst 	path;
   1010   1.27  christos 
   1011    1.5       cgd 		specType = ExPath;
   1012   1.97  christos 		path = Suff_GetPath(&line[5]);
   1013    1.1       cgd 		if (path == NILLST) {
   1014   1.97  christos 		    Parse_Error(PARSE_FATAL,
   1015    1.1       cgd 				 "Suffix '%s' not defined (yet)",
   1016    1.1       cgd 				 &line[5]);
   1017  1.112  christos 		    goto out;
   1018    1.1       cgd 		} else {
   1019    1.1       cgd 		    if (paths == (Lst)NULL) {
   1020    1.1       cgd 			paths = Lst_Init(FALSE);
   1021    1.1       cgd 		    }
   1022  1.119       dsl 		    (void)Lst_AtEnd(paths, path);
   1023    1.1       cgd 		}
   1024    1.1       cgd 	    }
   1025    1.1       cgd 	}
   1026   1.27  christos 
   1027    1.1       cgd 	/*
   1028    1.1       cgd 	 * Have word in line. Get or create its node and stick it at
   1029   1.27  christos 	 * the end of the targets list
   1030    1.1       cgd 	 */
   1031    1.1       cgd 	if ((specType == Not) && (*line != '\0')) {
   1032    1.1       cgd 	    if (Dir_HasWildcards(line)) {
   1033    1.1       cgd 		/*
   1034    1.1       cgd 		 * Targets are to be sought only in the current directory,
   1035    1.1       cgd 		 * so create an empty path for the thing. Note we need to
   1036    1.1       cgd 		 * use Dir_Destroy in the destruction of the path as the
   1037    1.1       cgd 		 * Dir module could have added a directory to the path...
   1038    1.1       cgd 		 */
   1039    1.1       cgd 		Lst	    emptyPath = Lst_Init(FALSE);
   1040   1.27  christos 
   1041    1.1       cgd 		Dir_Expand(line, emptyPath, curTargs);
   1042   1.27  christos 
   1043    1.1       cgd 		Lst_Destroy(emptyPath, Dir_Destroy);
   1044    1.1       cgd 	    } else {
   1045    1.1       cgd 		/*
   1046    1.1       cgd 		 * No wildcards, but we want to avoid code duplication,
   1047    1.1       cgd 		 * so create a list with the word on it.
   1048    1.1       cgd 		 */
   1049  1.119       dsl 		(void)Lst_AtEnd(curTargs, line);
   1050    1.1       cgd 	    }
   1051   1.27  christos 
   1052    1.1       cgd 	    while(!Lst_IsEmpty(curTargs)) {
   1053    1.1       cgd 		char	*targName = (char *)Lst_DeQueue(curTargs);
   1054   1.27  christos 
   1055    1.1       cgd 		if (!Suff_IsTransform (targName)) {
   1056   1.97  christos 		    gn = Targ_FindNode(targName, TARG_CREATE);
   1057    1.1       cgd 		} else {
   1058   1.97  christos 		    gn = Suff_AddTransform(targName);
   1059    1.1       cgd 		}
   1060   1.27  christos 
   1061  1.119       dsl 		(void)Lst_AtEnd(targets, gn);
   1062    1.1       cgd 	    }
   1063    1.5       cgd 	} else if (specType == ExPath && *line != '.' && *line != '\0') {
   1064    1.1       cgd 	    Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
   1065    1.1       cgd 	}
   1066   1.27  christos 
   1067    1.1       cgd 	*cp = savec;
   1068    1.1       cgd 	/*
   1069    1.1       cgd 	 * If it is a special type and not .PATH, it's the only target we
   1070    1.1       cgd 	 * allow on this line...
   1071    1.1       cgd 	 */
   1072    1.5       cgd 	if (specType != Not && specType != ExPath) {
   1073  1.115  christos 	    Boolean warning = FALSE;
   1074   1.27  christos 
   1075   1.77  christos 	    while (*cp && (ParseIsEscaped(lstart, cp) ||
   1076   1.77  christos 		((*cp != '!') && (*cp != ':')))) {
   1077   1.77  christos 		if (ParseIsEscaped(lstart, cp) ||
   1078   1.77  christos 		    (*cp != ' ' && *cp != '\t')) {
   1079  1.115  christos 		    warning = TRUE;
   1080    1.1       cgd 		}
   1081    1.1       cgd 		cp++;
   1082    1.1       cgd 	    }
   1083  1.115  christos 	    if (warning) {
   1084    1.1       cgd 		Parse_Error(PARSE_WARNING, "Extra target ignored");
   1085    1.1       cgd 	    }
   1086    1.1       cgd 	} else {
   1087   1.40  christos 	    while (*cp && isspace ((unsigned char)*cp)) {
   1088    1.1       cgd 		cp++;
   1089    1.1       cgd 	    }
   1090    1.1       cgd 	}
   1091    1.1       cgd 	line = cp;
   1092   1.77  christos     } while (*line && (ParseIsEscaped(lstart, line) ||
   1093   1.77  christos 	((*line != '!') && (*line != ':'))));
   1094    1.1       cgd 
   1095    1.1       cgd     /*
   1096    1.1       cgd      * Don't need the list of target names anymore...
   1097    1.1       cgd      */
   1098    1.1       cgd     Lst_Destroy(curTargs, NOFREE);
   1099  1.112  christos     curTargs = NULL;
   1100    1.1       cgd 
   1101    1.1       cgd     if (!Lst_IsEmpty(targets)) {
   1102    1.1       cgd 	switch(specType) {
   1103    1.1       cgd 	    default:
   1104    1.1       cgd 		Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
   1105    1.1       cgd 		break;
   1106    1.1       cgd 	    case Default:
   1107    1.1       cgd 	    case Begin:
   1108    1.1       cgd 	    case End:
   1109    1.1       cgd 	    case Interrupt:
   1110    1.1       cgd 		/*
   1111    1.1       cgd 		 * These four create nodes on which to hang commands, so
   1112    1.1       cgd 		 * targets shouldn't be empty...
   1113    1.1       cgd 		 */
   1114    1.1       cgd 	    case Not:
   1115    1.1       cgd 		/*
   1116    1.1       cgd 		 * Nothing special here -- targets can be empty if it wants.
   1117    1.1       cgd 		 */
   1118    1.1       cgd 		break;
   1119    1.1       cgd 	}
   1120    1.1       cgd     }
   1121    1.1       cgd 
   1122    1.1       cgd     /*
   1123    1.1       cgd      * Have now parsed all the target names. Must parse the operator next. The
   1124    1.1       cgd      * result is left in  op .
   1125    1.1       cgd      */
   1126    1.1       cgd     if (*cp == '!') {
   1127    1.1       cgd 	op = OP_FORCE;
   1128    1.1       cgd     } else if (*cp == ':') {
   1129    1.1       cgd 	if (cp[1] == ':') {
   1130    1.1       cgd 	    op = OP_DOUBLEDEP;
   1131    1.1       cgd 	    cp++;
   1132    1.1       cgd 	} else {
   1133    1.1       cgd 	    op = OP_DEPENDS;
   1134    1.1       cgd 	}
   1135    1.1       cgd     } else {
   1136   1.97  christos 	Parse_Error(PARSE_FATAL, "Missing dependency operator");
   1137  1.112  christos 	goto out;
   1138    1.1       cgd     }
   1139    1.1       cgd 
   1140    1.1       cgd     cp++;			/* Advance beyond operator */
   1141    1.1       cgd 
   1142  1.119       dsl     Lst_ForEach(targets, ParseDoOp, &op);
   1143    1.1       cgd 
   1144    1.1       cgd     /*
   1145   1.27  christos      * Get to the first source
   1146    1.1       cgd      */
   1147   1.40  christos     while (*cp && isspace ((unsigned char)*cp)) {
   1148    1.1       cgd 	cp++;
   1149    1.1       cgd     }
   1150    1.1       cgd     line = cp;
   1151    1.1       cgd 
   1152    1.1       cgd     /*
   1153    1.1       cgd      * Several special targets take different actions if present with no
   1154    1.1       cgd      * sources:
   1155    1.1       cgd      *	a .SUFFIXES line with no sources clears out all old suffixes
   1156    1.1       cgd      *	a .PRECIOUS line makes all targets precious
   1157    1.1       cgd      *	a .IGNORE line ignores errors for all targets
   1158    1.1       cgd      *	a .SILENT line creates silence when making all targets
   1159    1.1       cgd      *	a .PATH removes all directories from the search path(s).
   1160    1.1       cgd      */
   1161    1.1       cgd     if (!*line) {
   1162    1.1       cgd 	switch (specType) {
   1163    1.1       cgd 	    case Suffixes:
   1164   1.97  christos 		Suff_ClearSuffixes();
   1165    1.1       cgd 		break;
   1166    1.1       cgd 	    case Precious:
   1167    1.1       cgd 		allPrecious = TRUE;
   1168    1.1       cgd 		break;
   1169    1.1       cgd 	    case Ignore:
   1170    1.1       cgd 		ignoreErrors = TRUE;
   1171    1.1       cgd 		break;
   1172    1.1       cgd 	    case Silent:
   1173    1.1       cgd 		beSilent = TRUE;
   1174    1.1       cgd 		break;
   1175    1.5       cgd 	    case ExPath:
   1176  1.119       dsl 		Lst_ForEach(paths, ParseClearPath, NULL);
   1177   1.85       sjg 		Dir_SetPATH();
   1178    1.1       cgd 		break;
   1179   1.48       sjg #ifdef POSIX
   1180   1.48       sjg             case Posix:
   1181   1.70       sjg                 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0);
   1182   1.48       sjg                 break;
   1183   1.48       sjg #endif
   1184    1.5       cgd 	    default:
   1185    1.5       cgd 		break;
   1186    1.1       cgd 	}
   1187    1.1       cgd     } else if (specType == MFlags) {
   1188    1.1       cgd 	/*
   1189    1.1       cgd 	 * Call on functions in main.c to deal with these arguments and
   1190    1.1       cgd 	 * set the initial character to a null-character so the loop to
   1191    1.1       cgd 	 * get sources won't get anything
   1192    1.1       cgd 	 */
   1193   1.97  christos 	Main_ParseArgLine(line);
   1194    1.1       cgd 	*line = '\0';
   1195    1.5       cgd     } else if (specType == ExShell) {
   1196   1.97  christos 	if (Job_ParseShell(line) != SUCCESS) {
   1197   1.97  christos 	    Parse_Error(PARSE_FATAL, "improper shell specification");
   1198  1.112  christos 	    goto out;
   1199    1.1       cgd 	}
   1200    1.1       cgd 	*line = '\0';
   1201    1.1       cgd     } else if ((specType == NotParallel) || (specType == SingleShell)) {
   1202    1.1       cgd 	*line = '\0';
   1203    1.1       cgd     }
   1204   1.27  christos 
   1205    1.1       cgd     /*
   1206   1.27  christos      * NOW GO FOR THE SOURCES
   1207    1.1       cgd      */
   1208    1.5       cgd     if ((specType == Suffixes) || (specType == ExPath) ||
   1209    1.1       cgd 	(specType == Includes) || (specType == Libs) ||
   1210   1.75        tv 	(specType == Null) || (specType == ExObjdir))
   1211    1.1       cgd     {
   1212    1.1       cgd 	while (*line) {
   1213    1.1       cgd 	    /*
   1214    1.1       cgd 	     * If the target was one that doesn't take files as its sources
   1215    1.1       cgd 	     * but takes something like suffixes, we take each
   1216    1.1       cgd 	     * space-separated word on the line as a something and deal
   1217    1.1       cgd 	     * with it accordingly.
   1218    1.1       cgd 	     *
   1219    1.1       cgd 	     * If the target was .SUFFIXES, we take each source as a
   1220    1.1       cgd 	     * suffix and add it to the list of suffixes maintained by the
   1221    1.1       cgd 	     * Suff module.
   1222    1.1       cgd 	     *
   1223    1.1       cgd 	     * If the target was a .PATH, we add the source as a directory
   1224    1.1       cgd 	     * to search on the search path.
   1225    1.1       cgd 	     *
   1226    1.1       cgd 	     * If it was .INCLUDES, the source is taken to be the suffix of
   1227    1.1       cgd 	     * files which will be #included and whose search path should
   1228    1.1       cgd 	     * be present in the .INCLUDES variable.
   1229    1.1       cgd 	     *
   1230    1.1       cgd 	     * If it was .LIBS, the source is taken to be the suffix of
   1231    1.1       cgd 	     * files which are considered libraries and whose search path
   1232    1.1       cgd 	     * should be present in the .LIBS variable.
   1233    1.1       cgd 	     *
   1234    1.1       cgd 	     * If it was .NULL, the source is the suffix to use when a file
   1235    1.1       cgd 	     * has no valid suffix.
   1236   1.75        tv 	     *
   1237   1.75        tv 	     * If it was .OBJDIR, the source is a new definition for .OBJDIR,
   1238   1.75        tv 	     * and will cause make to do a new chdir to that path.
   1239    1.1       cgd 	     */
   1240   1.40  christos 	    while (*cp && !isspace ((unsigned char)*cp)) {
   1241    1.1       cgd 		cp++;
   1242    1.1       cgd 	    }
   1243    1.1       cgd 	    savec = *cp;
   1244    1.1       cgd 	    *cp = '\0';
   1245    1.1       cgd 	    switch (specType) {
   1246    1.1       cgd 		case Suffixes:
   1247   1.97  christos 		    Suff_AddSuffix(line, &mainNode);
   1248    1.1       cgd 		    break;
   1249    1.5       cgd 		case ExPath:
   1250  1.119       dsl 		    Lst_ForEach(paths, ParseAddDir, line);
   1251    1.1       cgd 		    break;
   1252    1.1       cgd 		case Includes:
   1253   1.97  christos 		    Suff_AddInclude(line);
   1254    1.1       cgd 		    break;
   1255    1.1       cgd 		case Libs:
   1256   1.97  christos 		    Suff_AddLib(line);
   1257    1.1       cgd 		    break;
   1258    1.1       cgd 		case Null:
   1259   1.97  christos 		    Suff_SetNull(line);
   1260   1.75        tv 		    break;
   1261   1.75        tv 		case ExObjdir:
   1262   1.75        tv 		    Main_SetObjdir(line);
   1263    1.1       cgd 		    break;
   1264    1.5       cgd 		default:
   1265    1.5       cgd 		    break;
   1266    1.1       cgd 	    }
   1267    1.1       cgd 	    *cp = savec;
   1268    1.1       cgd 	    if (savec != '\0') {
   1269    1.1       cgd 		cp++;
   1270    1.1       cgd 	    }
   1271   1.40  christos 	    while (*cp && isspace ((unsigned char)*cp)) {
   1272    1.1       cgd 		cp++;
   1273    1.1       cgd 	    }
   1274    1.1       cgd 	    line = cp;
   1275    1.1       cgd 	}
   1276    1.1       cgd 	if (paths) {
   1277    1.1       cgd 	    Lst_Destroy(paths, NOFREE);
   1278    1.1       cgd 	}
   1279   1.85       sjg 	if (specType == ExPath)
   1280   1.85       sjg 	    Dir_SetPATH();
   1281    1.1       cgd     } else {
   1282    1.1       cgd 	while (*line) {
   1283    1.1       cgd 	    /*
   1284    1.1       cgd 	     * The targets take real sources, so we must beware of archive
   1285    1.1       cgd 	     * specifications (i.e. things with left parentheses in them)
   1286    1.1       cgd 	     * and handle them accordingly.
   1287    1.1       cgd 	     */
   1288  1.118       dsl 	    for (; *cp && !isspace ((unsigned char)*cp); cp++) {
   1289   1.77  christos 		if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) {
   1290    1.1       cgd 		    /*
   1291    1.1       cgd 		     * Only stop for a left parenthesis if it isn't at the
   1292    1.1       cgd 		     * start of a word (that'll be for variable changes
   1293    1.1       cgd 		     * later) and isn't preceded by a dollar sign (a dynamic
   1294    1.1       cgd 		     * source).
   1295    1.1       cgd 		     */
   1296    1.1       cgd 		    break;
   1297    1.1       cgd 		}
   1298    1.1       cgd 	    }
   1299    1.1       cgd 
   1300   1.77  christos 	    if (*cp == LPAREN) {
   1301   1.97  christos 		sources = Lst_Init(FALSE);
   1302   1.97  christos 		if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) {
   1303   1.97  christos 		    Parse_Error(PARSE_FATAL,
   1304    1.1       cgd 				 "Error in source archive spec \"%s\"", line);
   1305  1.112  christos 		    goto out;
   1306    1.1       cgd 		}
   1307    1.1       cgd 
   1308    1.1       cgd 		while (!Lst_IsEmpty (sources)) {
   1309  1.103  christos 		    gn = (GNode *)Lst_DeQueue(sources);
   1310  1.120       dsl 		    ParseDoSrc(tOp, gn->name);
   1311    1.1       cgd 		}
   1312   1.97  christos 		Lst_Destroy(sources, NOFREE);
   1313    1.1       cgd 		cp = line;
   1314    1.1       cgd 	    } else {
   1315    1.1       cgd 		if (*cp) {
   1316    1.1       cgd 		    *cp = '\0';
   1317    1.1       cgd 		    cp += 1;
   1318    1.1       cgd 		}
   1319    1.1       cgd 
   1320  1.120       dsl 		ParseDoSrc(tOp, line);
   1321    1.1       cgd 	    }
   1322   1.40  christos 	    while (*cp && isspace ((unsigned char)*cp)) {
   1323    1.1       cgd 		cp++;
   1324    1.1       cgd 	    }
   1325    1.1       cgd 	    line = cp;
   1326    1.1       cgd 	}
   1327    1.1       cgd     }
   1328   1.27  christos 
   1329    1.1       cgd     if (mainNode == NILGNODE) {
   1330    1.1       cgd 	/*
   1331    1.1       cgd 	 * If we have yet to decide on a main target to make, in the
   1332    1.1       cgd 	 * absence of any user input, we want the first target on
   1333    1.1       cgd 	 * the first dependency line that is actually a real target
   1334    1.1       cgd 	 * (i.e. isn't a .USE or .EXEC rule) to be made.
   1335    1.1       cgd 	 */
   1336  1.119       dsl 	Lst_ForEach(targets, ParseFindMain, NULL);
   1337    1.1       cgd     }
   1338    1.1       cgd 
   1339  1.112  christos out:
   1340  1.112  christos     if (curTargs)
   1341  1.112  christos 	    Lst_Destroy(curTargs, NOFREE);
   1342    1.1       cgd }
   1343    1.1       cgd 
   1344    1.1       cgd /*-
   1345    1.1       cgd  *---------------------------------------------------------------------
   1346    1.1       cgd  * Parse_IsVar  --
   1347    1.1       cgd  *	Return TRUE if the passed line is a variable assignment. A variable
   1348    1.1       cgd  *	assignment consists of a single word followed by optional whitespace
   1349    1.1       cgd  *	followed by either a += or an = operator.
   1350    1.1       cgd  *	This function is used both by the Parse_File function and main when
   1351    1.1       cgd  *	parsing the command-line arguments.
   1352    1.1       cgd  *
   1353   1.84       wiz  * Input:
   1354   1.84       wiz  *	line		the line to check
   1355   1.84       wiz  *
   1356    1.1       cgd  * Results:
   1357    1.1       cgd  *	TRUE if it is. FALSE if it ain't
   1358    1.1       cgd  *
   1359    1.1       cgd  * Side Effects:
   1360    1.1       cgd  *	none
   1361    1.1       cgd  *---------------------------------------------------------------------
   1362    1.1       cgd  */
   1363    1.1       cgd Boolean
   1364   1.84       wiz Parse_IsVar(char *line)
   1365    1.1       cgd {
   1366   1.84       wiz     Boolean wasSpace = FALSE;	/* set TRUE if found a space */
   1367   1.84       wiz     Boolean haveName = FALSE;	/* Set TRUE if have a variable name */
   1368   1.16  christos     int level = 0;
   1369   1.16  christos #define ISEQOPERATOR(c) \
   1370   1.16  christos 	(((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
   1371    1.1       cgd 
   1372    1.1       cgd     /*
   1373    1.1       cgd      * Skip to variable name
   1374    1.1       cgd      */
   1375   1.27  christos     for (;(*line == ' ') || (*line == '\t'); line++)
   1376   1.16  christos 	continue;
   1377    1.1       cgd 
   1378   1.16  christos     for (; *line != '=' || level != 0; line++)
   1379   1.16  christos 	switch (*line) {
   1380   1.16  christos 	case '\0':
   1381    1.1       cgd 	    /*
   1382    1.1       cgd 	     * end-of-line -- can't be a variable assignment.
   1383    1.1       cgd 	     */
   1384   1.16  christos 	    return FALSE;
   1385   1.16  christos 
   1386   1.16  christos 	case ' ':
   1387   1.16  christos 	case '\t':
   1388    1.1       cgd 	    /*
   1389    1.1       cgd 	     * there can be as much white space as desired so long as there is
   1390   1.27  christos 	     * only one word before the operator
   1391    1.1       cgd 	     */
   1392    1.1       cgd 	    wasSpace = TRUE;
   1393   1.16  christos 	    break;
   1394   1.16  christos 
   1395   1.77  christos 	case LPAREN:
   1396   1.16  christos 	case '{':
   1397   1.16  christos 	    level++;
   1398   1.16  christos 	    break;
   1399   1.16  christos 
   1400   1.16  christos 	case '}':
   1401   1.77  christos 	case RPAREN:
   1402   1.16  christos 	    level--;
   1403   1.16  christos 	    break;
   1404   1.27  christos 
   1405   1.16  christos 	default:
   1406   1.16  christos 	    if (wasSpace && haveName) {
   1407   1.16  christos 		    if (ISEQOPERATOR(*line)) {
   1408   1.16  christos 			/*
   1409   1.23  christos 			 * We must have a finished word
   1410   1.23  christos 			 */
   1411   1.23  christos 			if (level != 0)
   1412   1.23  christos 			    return FALSE;
   1413   1.23  christos 
   1414   1.23  christos 			/*
   1415   1.16  christos 			 * When an = operator [+?!:] is found, the next
   1416   1.23  christos 			 * character must be an = or it ain't a valid
   1417   1.16  christos 			 * assignment.
   1418   1.16  christos 			 */
   1419   1.23  christos 			if (line[1] == '=')
   1420   1.16  christos 			    return haveName;
   1421   1.23  christos #ifdef SUNSHCMD
   1422   1.16  christos 			/*
   1423   1.23  christos 			 * This is a shell command
   1424   1.16  christos 			 */
   1425   1.23  christos 			if (strncmp(line, ":sh", 3) == 0)
   1426   1.23  christos 			    return haveName;
   1427   1.23  christos #endif
   1428   1.16  christos 		    }
   1429   1.23  christos 		    /*
   1430   1.23  christos 		     * This is the start of another word, so not assignment.
   1431   1.23  christos 		     */
   1432   1.23  christos 		    return FALSE;
   1433   1.16  christos 	    }
   1434   1.16  christos 	    else {
   1435   1.27  christos 		haveName = TRUE;
   1436   1.16  christos 		wasSpace = FALSE;
   1437    1.1       cgd 	    }
   1438   1.16  christos 	    break;
   1439    1.1       cgd 	}
   1440    1.1       cgd 
   1441   1.16  christos     return haveName;
   1442    1.1       cgd }
   1443    1.1       cgd 
   1444    1.1       cgd /*-
   1445    1.1       cgd  *---------------------------------------------------------------------
   1446    1.1       cgd  * Parse_DoVar  --
   1447    1.1       cgd  *	Take the variable assignment in the passed line and do it in the
   1448    1.1       cgd  *	global context.
   1449    1.1       cgd  *
   1450    1.1       cgd  *	Note: There is a lexical ambiguity with assignment modifier characters
   1451    1.1       cgd  *	in variable names. This routine interprets the character before the =
   1452    1.1       cgd  *	as a modifier. Therefore, an assignment like
   1453    1.1       cgd  *	    C++=/usr/bin/CC
   1454    1.1       cgd  *	is interpreted as "C+ +=" instead of "C++ =".
   1455    1.1       cgd  *
   1456   1.84       wiz  * Input:
   1457   1.84       wiz  *	line		a line guaranteed to be a variable assignment.
   1458   1.84       wiz  *			This reduces error checks
   1459   1.84       wiz  *	ctxt		Context in which to do the assignment
   1460   1.84       wiz  *
   1461    1.1       cgd  * Results:
   1462    1.1       cgd  *	none
   1463    1.1       cgd  *
   1464    1.1       cgd  * Side Effects:
   1465    1.1       cgd  *	the variable structure of the given variable name is altered in the
   1466    1.1       cgd  *	global context.
   1467    1.1       cgd  *---------------------------------------------------------------------
   1468    1.1       cgd  */
   1469    1.1       cgd void
   1470   1.84       wiz Parse_DoVar(char *line, GNode *ctxt)
   1471    1.1       cgd {
   1472    1.7       cgd     char	   *cp;	/* pointer into line */
   1473    1.1       cgd     enum {
   1474    1.1       cgd 	VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
   1475    1.1       cgd     }	    	    type;   	/* Type of assignment */
   1476   1.27  christos     char            *opc;	/* ptr to operator character to
   1477    1.1       cgd 				 * null-terminate the variable name */
   1478   1.86       sjg     Boolean	   freeCp = FALSE; /* TRUE if cp needs to be freed,
   1479   1.86       sjg 				    * i.e. if any variable expansion was
   1480   1.86       sjg 				    * performed */
   1481    1.1       cgd 
   1482    1.1       cgd     /*
   1483    1.1       cgd      * Skip to variable name
   1484    1.1       cgd      */
   1485    1.1       cgd     while ((*line == ' ') || (*line == '\t')) {
   1486    1.1       cgd 	line++;
   1487    1.1       cgd     }
   1488    1.1       cgd 
   1489    1.1       cgd     /*
   1490    1.1       cgd      * Skip to operator character, nulling out whitespace as we go
   1491    1.1       cgd      */
   1492    1.1       cgd     for (cp = line + 1; *cp != '='; cp++) {
   1493   1.40  christos 	if (isspace ((unsigned char)*cp)) {
   1494    1.1       cgd 	    *cp = '\0';
   1495    1.1       cgd 	}
   1496    1.1       cgd     }
   1497    1.1       cgd     opc = cp-1;		/* operator is the previous character */
   1498    1.1       cgd     *cp++ = '\0';	/* nuke the = */
   1499    1.1       cgd 
   1500    1.1       cgd     /*
   1501    1.1       cgd      * Check operator type
   1502    1.1       cgd      */
   1503    1.1       cgd     switch (*opc) {
   1504    1.1       cgd 	case '+':
   1505    1.1       cgd 	    type = VAR_APPEND;
   1506    1.1       cgd 	    *opc = '\0';
   1507    1.1       cgd 	    break;
   1508    1.1       cgd 
   1509    1.1       cgd 	case '?':
   1510    1.1       cgd 	    /*
   1511    1.1       cgd 	     * If the variable already has a value, we don't do anything.
   1512    1.1       cgd 	     */
   1513    1.1       cgd 	    *opc = '\0';
   1514    1.1       cgd 	    if (Var_Exists(line, ctxt)) {
   1515    1.1       cgd 		return;
   1516    1.1       cgd 	    } else {
   1517    1.1       cgd 		type = VAR_NORMAL;
   1518    1.1       cgd 	    }
   1519    1.1       cgd 	    break;
   1520    1.1       cgd 
   1521    1.1       cgd 	case ':':
   1522    1.1       cgd 	    type = VAR_SUBST;
   1523    1.1       cgd 	    *opc = '\0';
   1524    1.1       cgd 	    break;
   1525    1.1       cgd 
   1526    1.1       cgd 	case '!':
   1527    1.1       cgd 	    type = VAR_SHELL;
   1528    1.1       cgd 	    *opc = '\0';
   1529    1.1       cgd 	    break;
   1530    1.1       cgd 
   1531    1.1       cgd 	default:
   1532   1.23  christos #ifdef SUNSHCMD
   1533   1.39  christos 	    while (opc > line && *opc != ':')
   1534   1.39  christos 		opc--;
   1535   1.23  christos 
   1536   1.23  christos 	    if (strncmp(opc, ":sh", 3) == 0) {
   1537   1.23  christos 		type = VAR_SHELL;
   1538   1.23  christos 		*opc = '\0';
   1539   1.23  christos 		break;
   1540   1.23  christos 	    }
   1541   1.23  christos #endif
   1542    1.1       cgd 	    type = VAR_NORMAL;
   1543    1.1       cgd 	    break;
   1544    1.1       cgd     }
   1545    1.1       cgd 
   1546   1.40  christos     while (isspace ((unsigned char)*cp)) {
   1547    1.1       cgd 	cp++;
   1548    1.1       cgd     }
   1549    1.1       cgd 
   1550    1.1       cgd     if (type == VAR_APPEND) {
   1551   1.97  christos 	Var_Append(line, cp, ctxt);
   1552    1.1       cgd     } else if (type == VAR_SUBST) {
   1553    1.1       cgd 	/*
   1554    1.1       cgd 	 * Allow variables in the old value to be undefined, but leave their
   1555    1.1       cgd 	 * invocation alone -- this is done by forcing oldVars to be false.
   1556    1.1       cgd 	 * XXX: This can cause recursive variables, but that's not hard to do,
   1557    1.1       cgd 	 * and this allows someone to do something like
   1558    1.1       cgd 	 *
   1559    1.1       cgd 	 *  CFLAGS = $(.INCLUDES)
   1560    1.1       cgd 	 *  CFLAGS := -I.. $(CFLAGS)
   1561    1.1       cgd 	 *
   1562    1.1       cgd 	 * And not get an error.
   1563    1.1       cgd 	 */
   1564    1.1       cgd 	Boolean	  oldOldVars = oldVars;
   1565    1.1       cgd 
   1566    1.1       cgd 	oldVars = FALSE;
   1567   1.42  christos 
   1568   1.42  christos 	/*
   1569   1.42  christos 	 * make sure that we set the variable the first time to nothing
   1570   1.42  christos 	 * so that it gets substituted!
   1571   1.42  christos 	 */
   1572   1.42  christos 	if (!Var_Exists(line, ctxt))
   1573   1.70       sjg 	    Var_Set(line, "", ctxt, 0);
   1574   1.42  christos 
   1575    1.5       cgd 	cp = Var_Subst(NULL, cp, ctxt, FALSE);
   1576    1.1       cgd 	oldVars = oldOldVars;
   1577   1.86       sjg 	freeCp = TRUE;
   1578    1.1       cgd 
   1579   1.70       sjg 	Var_Set(line, cp, ctxt, 0);
   1580    1.1       cgd     } else if (type == VAR_SHELL) {
   1581   1.93  christos 	char *res;
   1582  1.115  christos 	const char *error;
   1583    1.5       cgd 
   1584   1.23  christos 	if (strchr(cp, '$') != NULL) {
   1585    1.1       cgd 	    /*
   1586    1.1       cgd 	     * There's a dollar sign in the command, so perform variable
   1587    1.1       cgd 	     * expansion on the whole thing. The resulting string will need
   1588    1.1       cgd 	     * freeing when we're done, so set freeCmd to TRUE.
   1589    1.1       cgd 	     */
   1590   1.23  christos 	    cp = Var_Subst(NULL, cp, VAR_CMD, TRUE);
   1591   1.86       sjg 	    freeCp = TRUE;
   1592    1.1       cgd 	}
   1593    1.1       cgd 
   1594  1.115  christos 	res = Cmd_Exec(cp, &error);
   1595   1.70       sjg 	Var_Set(line, res, ctxt, 0);
   1596   1.23  christos 	free(res);
   1597    1.1       cgd 
   1598  1.115  christos 	if (error)
   1599  1.115  christos 	    Parse_Error(PARSE_WARNING, error, cp);
   1600    1.1       cgd     } else {
   1601    1.1       cgd 	/*
   1602    1.1       cgd 	 * Normal assignment -- just do it.
   1603    1.1       cgd 	 */
   1604   1.70       sjg 	Var_Set(line, cp, ctxt, 0);
   1605    1.1       cgd     }
   1606   1.69       sjg     if (strcmp(line, MAKEOVERRIDES) == 0)
   1607   1.74        tv 	Main_ExportMAKEFLAGS(FALSE);	/* re-export MAKEFLAGS */
   1608   1.85       sjg     else if (strcmp(line, ".CURDIR") == 0) {
   1609   1.85       sjg 	/*
   1610   1.85       sjg 	 * Somone is being (too?) clever...
   1611   1.85       sjg 	 * Let's pretend they know what they are doing and
   1612   1.85       sjg 	 * re-initialize the 'cur' Path.
   1613   1.85       sjg 	 */
   1614   1.85       sjg 	Dir_InitCur(cp);
   1615   1.85       sjg 	Dir_SetPATH();
   1616   1.85       sjg     }
   1617   1.86       sjg     if (freeCp)
   1618   1.86       sjg 	free(cp);
   1619    1.1       cgd }
   1620   1.23  christos 
   1621    1.1       cgd 
   1622    1.1       cgd /*-
   1623    1.1       cgd  * ParseAddCmd  --
   1624    1.1       cgd  *	Lst_ForEach function to add a command line to all targets
   1625    1.1       cgd  *
   1626   1.84       wiz  * Input:
   1627   1.84       wiz  *	gnp		the node to which the command is to be added
   1628   1.84       wiz  *	cmd		the command to add
   1629   1.84       wiz  *
   1630    1.1       cgd  * Results:
   1631    1.1       cgd  *	Always 0
   1632    1.1       cgd  *
   1633    1.1       cgd  * Side Effects:
   1634    1.1       cgd  *	A new element is added to the commands list of the node.
   1635    1.1       cgd  */
   1636    1.5       cgd static int
   1637   1.84       wiz ParseAddCmd(ClientData gnp, ClientData cmd)
   1638    1.9       jtc {
   1639  1.105  christos     GNode *gn = (GNode *)gnp;
   1640  1.120       dsl 
   1641  1.120       dsl     /* Add to last (ie current) cohort for :: targets */
   1642   1.47   mycroft     if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
   1643  1.103  christos 	gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
   1644  1.120       dsl 
   1645  1.120       dsl     /* if target already supplied, ignore commands */
   1646   1.59  christos     if (!(gn->type & OP_HAS_COMMANDS)) {
   1647   1.59  christos 	(void)Lst_AtEnd(gn->commands, cmd);
   1648   1.59  christos 	ParseMark(gn);
   1649   1.59  christos     } else {
   1650   1.60  christos #ifdef notyet
   1651   1.60  christos 	/* XXX: We cannot do this until we fix the tree */
   1652    1.9       jtc 	(void)Lst_AtEnd(gn->commands, cmd);
   1653   1.97  christos 	Parse_Error(PARSE_WARNING,
   1654   1.61  christos 		     "overriding commands for target \"%s\"; "
   1655   1.61  christos 		     "previous commands defined at %s: %d ignored",
   1656   1.59  christos 		     gn->name, gn->fname, gn->lineno);
   1657   1.60  christos #else
   1658   1.97  christos 	Parse_Error(PARSE_WARNING,
   1659   1.62   mycroft 		     "duplicate script for target \"%s\" ignored",
   1660   1.62   mycroft 		     gn->name);
   1661   1.97  christos 	ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING,
   1662   1.62   mycroft 			    "using previous script for \"%s\" defined here",
   1663   1.62   mycroft 			    gn->name);
   1664   1.60  christos #endif
   1665   1.59  christos     }
   1666    1.9       jtc     return(0);
   1667    1.1       cgd }
   1668    1.1       cgd 
   1669    1.1       cgd /*-
   1670    1.1       cgd  *-----------------------------------------------------------------------
   1671    1.1       cgd  * ParseHasCommands --
   1672    1.1       cgd  *	Callback procedure for Parse_File when destroying the list of
   1673    1.1       cgd  *	targets on the last dependency line. Marks a target as already
   1674    1.1       cgd  *	having commands if it does, to keep from having shell commands
   1675    1.1       cgd  *	on multiple dependency lines.
   1676    1.1       cgd  *
   1677   1.84       wiz  * Input:
   1678   1.84       wiz  *	gnp		Node to examine
   1679   1.84       wiz  *
   1680    1.1       cgd  * Results:
   1681    1.9       jtc  *	None
   1682    1.1       cgd  *
   1683    1.1       cgd  * Side Effects:
   1684    1.1       cgd  *	OP_HAS_COMMANDS may be set for the target.
   1685    1.1       cgd  *
   1686    1.1       cgd  *-----------------------------------------------------------------------
   1687    1.1       cgd  */
   1688    1.9       jtc static void
   1689   1.84       wiz ParseHasCommands(ClientData gnp)
   1690    1.1       cgd {
   1691  1.105  christos     GNode *gn = (GNode *)gnp;
   1692    1.1       cgd     if (!Lst_IsEmpty(gn->commands)) {
   1693    1.1       cgd 	gn->type |= OP_HAS_COMMANDS;
   1694    1.1       cgd     }
   1695    1.1       cgd }
   1696    1.1       cgd 
   1697    1.1       cgd /*-
   1698    1.1       cgd  *-----------------------------------------------------------------------
   1699    1.1       cgd  * Parse_AddIncludeDir --
   1700    1.1       cgd  *	Add a directory to the path searched for included makefiles
   1701    1.1       cgd  *	bracketed by double-quotes. Used by functions in main.c
   1702    1.1       cgd  *
   1703   1.84       wiz  * Input:
   1704   1.84       wiz  *	dir		The name of the directory to add
   1705   1.84       wiz  *
   1706    1.1       cgd  * Results:
   1707    1.1       cgd  *	None.
   1708    1.1       cgd  *
   1709    1.1       cgd  * Side Effects:
   1710    1.1       cgd  *	The directory is appended to the list.
   1711    1.1       cgd  *
   1712    1.1       cgd  *-----------------------------------------------------------------------
   1713    1.1       cgd  */
   1714    1.1       cgd void
   1715   1.84       wiz Parse_AddIncludeDir(char *dir)
   1716    1.1       cgd {
   1717  1.103  christos     (void)Dir_AddDir(parseIncPath, dir);
   1718    1.1       cgd }
   1719    1.1       cgd 
   1720    1.1       cgd /*-
   1721    1.1       cgd  *---------------------------------------------------------------------
   1722    1.1       cgd  * ParseDoInclude  --
   1723    1.1       cgd  *	Push to another file.
   1724   1.27  christos  *
   1725   1.38  christos  *	The input is the line minus the `.'. A file spec is a string
   1726    1.1       cgd  *	enclosed in <> or "". The former is looked for only in sysIncPath.
   1727    1.1       cgd  *	The latter in . and the directories specified by -I command line
   1728    1.1       cgd  *	options
   1729    1.1       cgd  *
   1730    1.1       cgd  * Results:
   1731    1.1       cgd  *	None
   1732    1.1       cgd  *
   1733    1.1       cgd  * Side Effects:
   1734    1.1       cgd  *	A structure is added to the includes Lst and readProc, lineno,
   1735    1.1       cgd  *	fname and curFILE are altered for the new file
   1736    1.1       cgd  *---------------------------------------------------------------------
   1737    1.1       cgd  */
   1738  1.123       dsl 
   1739    1.1       cgd static void
   1740  1.123       dsl Parse_include_file(char *file, Boolean isSystem, int silent)
   1741    1.1       cgd {
   1742    1.1       cgd     char          *fullname;	/* full pathname of file */
   1743  1.125       dsl     int           fd;
   1744    1.1       cgd 
   1745    1.1       cgd     /*
   1746    1.1       cgd      * Now we know the file's name and its search path, we attempt to
   1747    1.1       cgd      * find the durn thing. A return of NULL indicates the file don't
   1748    1.1       cgd      * exist.
   1749    1.1       cgd      */
   1750  1.105  christos     fullname = NULL;
   1751   1.76   reinoud 
   1752    1.1       cgd     if (!isSystem) {
   1753    1.1       cgd 	/*
   1754    1.1       cgd 	 * Include files contained in double-quotes are first searched for
   1755    1.1       cgd 	 * relative to the including file's location. We don't want to
   1756    1.1       cgd 	 * cd there, of course, so we just tack on the old file's
   1757    1.1       cgd 	 * leading path components and call Dir_FindFile to see if
   1758    1.1       cgd 	 * we can locate the beast.
   1759    1.1       cgd 	 */
   1760   1.19   thorpej 	char	  *prefEnd, *Fname;
   1761    1.1       cgd 
   1762   1.19   thorpej 	/* Make a temporary copy of this, to be safe. */
   1763  1.125       dsl 	Fname = estrdup(curFile->fname);
   1764   1.19   thorpej 
   1765  1.103  christos 	prefEnd = strrchr(Fname, '/');
   1766  1.105  christos 	if (prefEnd != NULL) {
   1767    1.1       cgd 	    char  	*newName;
   1768   1.27  christos 
   1769    1.1       cgd 	    *prefEnd = '\0';
   1770    1.9       jtc 	    if (file[0] == '/')
   1771   1.24  christos 		newName = estrdup(file);
   1772    1.9       jtc 	    else
   1773   1.97  christos 		newName = str_concat(Fname, file, STR_ADDSLASH);
   1774   1.97  christos 	    fullname = Dir_FindFile(newName, parseIncPath);
   1775  1.105  christos 	    if (fullname == NULL) {
   1776    1.1       cgd 		fullname = Dir_FindFile(newName, dirSearchPath);
   1777    1.1       cgd 	    }
   1778  1.103  christos 	    free(newName);
   1779    1.1       cgd 	    *prefEnd = '/';
   1780    1.1       cgd 	} else {
   1781  1.105  christos 	    fullname = NULL;
   1782    1.1       cgd 	}
   1783  1.103  christos 	free(Fname);
   1784  1.105  christos         if (fullname == NULL) {
   1785   1.76   reinoud 	    /*
   1786   1.76   reinoud     	     * Makefile wasn't found in same directory as included makefile.
   1787   1.76   reinoud 	     * Search for it first on the -I search path,
   1788   1.76   reinoud 	     * then on the .PATH search path, if not found in a -I directory.
   1789   1.76   reinoud 	     * XXX: Suffix specific?
   1790   1.76   reinoud 	     */
   1791   1.97  christos 	    fullname = Dir_FindFile(file, parseIncPath);
   1792  1.105  christos 	    if (fullname == NULL) {
   1793   1.76   reinoud 	        fullname = Dir_FindFile(file, dirSearchPath);
   1794   1.76   reinoud 	    }
   1795   1.76   reinoud         }
   1796    1.1       cgd     }
   1797    1.1       cgd 
   1798   1.76   reinoud     /* Looking for a system file or file still not found */
   1799  1.105  christos     if (fullname == NULL) {
   1800    1.1       cgd 	/*
   1801   1.76   reinoud 	 * Look for it on the system path
   1802    1.1       cgd 	 */
   1803  1.123       dsl 	fullname = Dir_FindFile(file,
   1804  1.123       dsl 		    Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
   1805    1.1       cgd     }
   1806    1.1       cgd 
   1807  1.105  christos     if (fullname == NULL) {
   1808   1.38  christos 	if (!silent)
   1809   1.97  christos 	    Parse_Error(PARSE_FATAL, "Could not find %s", file);
   1810    1.1       cgd 	return;
   1811    1.1       cgd     }
   1812    1.1       cgd 
   1813  1.125       dsl     /* Actually open the file... */
   1814  1.125       dsl     fd = open(fullname, O_RDONLY);
   1815  1.125       dsl     if (fd == -1) {
   1816   1.38  christos 	if (!silent)
   1817   1.97  christos 	    Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
   1818  1.125       dsl 	return;
   1819  1.123       dsl     }
   1820  1.125       dsl 
   1821  1.125       dsl     /* Start reading from this file next */
   1822  1.125       dsl     Parse_SetInput(fullname, 0, fd, NULL);
   1823  1.123       dsl }
   1824  1.123       dsl 
   1825  1.123       dsl static void
   1826  1.123       dsl ParseDoInclude(char *line)
   1827  1.123       dsl {
   1828  1.123       dsl     char          endc;	    	/* the character which ends the file spec */
   1829  1.123       dsl     char          *cp;		/* current position in file spec */
   1830  1.123       dsl     int		  silent = (*line != 'i') ? 1 : 0;
   1831  1.123       dsl     char	  *file = &line[7 + silent];
   1832  1.123       dsl 
   1833  1.123       dsl     /* Skip to delimiter character so we know where to look */
   1834  1.123       dsl     while (*file == ' ' || *file == '\t')
   1835  1.123       dsl 	file++;
   1836  1.123       dsl 
   1837  1.123       dsl     if (*file != '"' && *file != '<') {
   1838  1.123       dsl 	Parse_Error(PARSE_FATAL,
   1839  1.123       dsl 	    ".include filename must be delimited by '\"' or '<'");
   1840  1.123       dsl 	return;
   1841  1.123       dsl     }
   1842  1.123       dsl 
   1843  1.123       dsl     /*
   1844  1.123       dsl      * Set the search path on which to find the include file based on the
   1845  1.123       dsl      * characters which bracket its name. Angle-brackets imply it's
   1846  1.123       dsl      * a system Makefile while double-quotes imply it's a user makefile
   1847  1.123       dsl      */
   1848  1.123       dsl     if (*file == '<') {
   1849  1.123       dsl 	endc = '>';
   1850  1.123       dsl     } else {
   1851  1.123       dsl 	endc = '"';
   1852  1.123       dsl     }
   1853  1.123       dsl 
   1854  1.123       dsl     /* Skip to matching delimiter */
   1855  1.123       dsl     for (cp = ++file; *cp && *cp != endc; cp++)
   1856  1.123       dsl 	continue;
   1857  1.123       dsl 
   1858  1.123       dsl     if (*cp != endc) {
   1859  1.123       dsl 	Parse_Error(PARSE_FATAL,
   1860  1.123       dsl 		     "Unclosed %cinclude filename. '%c' expected",
   1861  1.123       dsl 		     '.', endc);
   1862  1.123       dsl 	return;
   1863    1.1       cgd     }
   1864  1.123       dsl     *cp = '\0';
   1865  1.123       dsl 
   1866  1.123       dsl     /*
   1867  1.123       dsl      * Substitute for any variables in the file name before trying to
   1868  1.123       dsl      * find the thing.
   1869  1.123       dsl      */
   1870  1.123       dsl     file = Var_Subst(NULL, file, VAR_CMD, FALSE);
   1871  1.123       dsl 
   1872  1.123       dsl     Parse_include_file(file, endc == '>', silent);
   1873  1.123       dsl     free(file);
   1874    1.1       cgd }
   1875    1.1       cgd 
   1876    1.5       cgd 
   1877    1.5       cgd /*-
   1878    1.5       cgd  *---------------------------------------------------------------------
   1879   1.44     aidan  * ParseSetParseFile  --
   1880   1.44     aidan  *	Set the .PARSEDIR and .PARSEFILE variables to the dirname and
   1881   1.44     aidan  *	basename of the given filename
   1882   1.44     aidan  *
   1883   1.44     aidan  * Results:
   1884   1.44     aidan  *	None
   1885   1.44     aidan  *
   1886   1.44     aidan  * Side Effects:
   1887   1.44     aidan  *	The .PARSEDIR and .PARSEFILE variables are overwritten by the
   1888   1.44     aidan  *	dirname and basename of the given filename.
   1889   1.44     aidan  *---------------------------------------------------------------------
   1890   1.44     aidan  */
   1891   1.44     aidan static void
   1892  1.122       dsl ParseSetParseFile(const char *filename)
   1893   1.44     aidan {
   1894   1.44     aidan     char *slash;
   1895  1.122       dsl     char *dirname;
   1896  1.122       dsl     int len;
   1897   1.44     aidan 
   1898   1.78   reinoud     slash = strrchr(filename, '/');
   1899  1.122       dsl     if (slash == NULL) {
   1900   1.70       sjg 	Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0);
   1901   1.78   reinoud 	Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0);
   1902   1.44     aidan     } else {
   1903  1.122       dsl 	len = slash - filename;
   1904  1.122       dsl 	dirname = emalloc(len + 1);
   1905  1.122       dsl 	memcpy(dirname, filename, len);
   1906  1.122       dsl 	dirname[len] = 0;
   1907  1.122       dsl 	Var_Set(".PARSEDIR", dirname, VAR_GLOBAL, 0);
   1908   1.70       sjg 	Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0);
   1909  1.122       dsl 	free(dirname);
   1910   1.44     aidan     }
   1911   1.44     aidan }
   1912   1.44     aidan 
   1913   1.44     aidan 
   1914   1.44     aidan /*-
   1915   1.44     aidan  *---------------------------------------------------------------------
   1916  1.125       dsl  * Parse_setInput  --
   1917  1.125       dsl  *	Start Parsing from the given source
   1918   1.27  christos  *
   1919    1.5       cgd  * Results:
   1920    1.5       cgd  *	None
   1921    1.5       cgd  *
   1922    1.5       cgd  * Side Effects:
   1923    1.5       cgd  *	A structure is added to the includes Lst and readProc, lineno,
   1924  1.125       dsl  *	fname and curFile are altered for the new file
   1925    1.5       cgd  *---------------------------------------------------------------------
   1926    1.5       cgd  */
   1927    1.5       cgd void
   1928  1.125       dsl Parse_SetInput(const char *name, int line, int fd, char *buf)
   1929    1.5       cgd {
   1930  1.127       dsl     if (name == NULL)
   1931  1.127       dsl 	name = curFile->fname;
   1932  1.127       dsl 
   1933  1.127       dsl     if (DEBUG(PARSE))
   1934  1.127       dsl 	fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, buf %p\n",
   1935  1.127       dsl 		name, line, fd, buf);
   1936  1.127       dsl 
   1937  1.125       dsl     if (fd == -1 && buf == NULL)
   1938  1.125       dsl 	/* sanity */
   1939  1.125       dsl 	return;
   1940  1.125       dsl 
   1941  1.125       dsl     /* Save exiting file info */
   1942  1.125       dsl     Lst_AtFront(includes, curFile);
   1943    1.5       cgd 
   1944  1.125       dsl     /* Allocate and fill in new structure */
   1945  1.125       dsl     curFile = emalloc(sizeof *curFile);
   1946  1.125       dsl 
   1947  1.125       dsl     /*
   1948  1.125       dsl      * Once the previous state has been saved, we can get down to reading
   1949  1.125       dsl      * the new file. We set up the name of the file to be the absolute
   1950  1.125       dsl      * name of the include file so error messages refer to the right
   1951  1.125       dsl      * place.
   1952  1.125       dsl      */
   1953  1.125       dsl     curFile->fname = name;
   1954  1.125       dsl     curFile->lineno = line;
   1955  1.125       dsl     curFile->fd = fd;
   1956   1.27  christos 
   1957  1.125       dsl     ParseSetParseFile(name);
   1958  1.125       dsl 
   1959  1.125       dsl     if (buf == NULL) {
   1960  1.125       dsl 	/*
   1961  1.125       dsl 	 * Allocate a 32k data buffer (as stdio seems to).
   1962  1.125       dsl 	 * Set pointers so that first ParseReadc has to do a file read.
   1963  1.125       dsl 	 */
   1964  1.127       dsl 	buf = emalloc(IFILE_BUFLEN);
   1965  1.125       dsl 	buf[0] = 0;
   1966  1.125       dsl 	curFile->P_str = buf;
   1967  1.125       dsl 	curFile->P_ptr = buf;
   1968  1.125       dsl 	curFile->P_end = buf;
   1969  1.127       dsl 	curFile->P_buflen = IFILE_BUFLEN;
   1970  1.125       dsl     } else {
   1971  1.125       dsl 	/* Start reading from the start of the buffer */
   1972  1.125       dsl 	curFile->P_str = buf;
   1973  1.125       dsl 	curFile->P_ptr = buf;
   1974  1.125       dsl 	curFile->P_end = NULL;
   1975  1.125       dsl     }
   1976    1.5       cgd 
   1977    1.5       cgd }
   1978    1.5       cgd 
   1979    1.5       cgd #ifdef SYSVINCLUDE
   1980    1.5       cgd /*-
   1981    1.5       cgd  *---------------------------------------------------------------------
   1982    1.5       cgd  * ParseTraditionalInclude  --
   1983    1.5       cgd  *	Push to another file.
   1984   1.27  christos  *
   1985   1.38  christos  *	The input is the current line. The file name(s) are
   1986   1.38  christos  *	following the "include".
   1987    1.5       cgd  *
   1988    1.5       cgd  * Results:
   1989    1.5       cgd  *	None
   1990    1.5       cgd  *
   1991    1.5       cgd  * Side Effects:
   1992    1.5       cgd  *	A structure is added to the includes Lst and readProc, lineno,
   1993    1.5       cgd  *	fname and curFILE are altered for the new file
   1994    1.5       cgd  *---------------------------------------------------------------------
   1995    1.5       cgd  */
   1996    1.5       cgd static void
   1997   1.84       wiz ParseTraditionalInclude(char *line)
   1998    1.5       cgd {
   1999    1.5       cgd     char          *cp;		/* current position in file spec */
   2000   1.38  christos     int		   done = 0;
   2001   1.38  christos     int		   silent = (line[0] != 'i') ? 1 : 0;
   2002   1.38  christos     char	  *file = &line[silent + 7];
   2003  1.123       dsl     char	  *all_files;
   2004    1.5       cgd 
   2005  1.111  ginsbach     if (DEBUG(PARSE)) {
   2006  1.116       dsl 	    fprintf(debug_file, "ParseTraditionalInclude: %s\n", file);
   2007  1.111  ginsbach     }
   2008  1.111  ginsbach 
   2009    1.5       cgd     /*
   2010    1.5       cgd      * Skip over whitespace
   2011    1.5       cgd      */
   2012   1.38  christos     while (isspace((unsigned char)*file))
   2013    1.5       cgd 	file++;
   2014    1.5       cgd 
   2015  1.111  ginsbach     /*
   2016  1.111  ginsbach      * Substitute for any variables in the file name before trying to
   2017  1.111  ginsbach      * find the thing.
   2018  1.111  ginsbach      */
   2019  1.123       dsl     all_files = Var_Subst(NULL, file, VAR_CMD, FALSE);
   2020  1.111  ginsbach 
   2021    1.5       cgd     if (*file == '\0') {
   2022   1.97  christos 	Parse_Error(PARSE_FATAL,
   2023    1.5       cgd 		     "Filename missing from \"include\"");
   2024    1.5       cgd 	return;
   2025    1.5       cgd     }
   2026    1.5       cgd 
   2027  1.123       dsl     for (file = all_files; !done; file = cp + 1) {
   2028  1.123       dsl 	/* Skip to end of line or next whitespace */
   2029   1.38  christos 	for (cp = file; *cp && !isspace((unsigned char) *cp); cp++)
   2030   1.38  christos 	    continue;
   2031   1.38  christos 
   2032   1.38  christos 	if (*cp)
   2033   1.38  christos 	    *cp = '\0';
   2034   1.38  christos 	else
   2035   1.38  christos 	    done = 1;
   2036   1.38  christos 
   2037  1.123       dsl 	Parse_include_file(file, FALSE, silent);
   2038    1.5       cgd     }
   2039  1.123       dsl     free(all_files);
   2040    1.5       cgd }
   2041    1.5       cgd #endif
   2042    1.5       cgd 
   2043    1.1       cgd /*-
   2044    1.1       cgd  *---------------------------------------------------------------------
   2045    1.1       cgd  * ParseEOF  --
   2046    1.1       cgd  *	Called when EOF is reached in the current file. If we were reading
   2047    1.1       cgd  *	an include file, the includes stack is popped and things set up
   2048    1.1       cgd  *	to go back to reading the previous file at the previous location.
   2049    1.1       cgd  *
   2050    1.1       cgd  * Results:
   2051    1.1       cgd  *	CONTINUE if there's more to do. DONE if not.
   2052    1.1       cgd  *
   2053    1.1       cgd  * Side Effects:
   2054    1.1       cgd  *	The old curFILE, is closed. The includes list is shortened.
   2055    1.1       cgd  *	lineno, curFILE, and fname are changed if CONTINUE is returned.
   2056    1.1       cgd  *---------------------------------------------------------------------
   2057    1.1       cgd  */
   2058    1.1       cgd static int
   2059  1.123       dsl ParseEOF(void)
   2060    1.1       cgd {
   2061  1.125       dsl     /* Dispose of curFile info */
   2062  1.125       dsl     /* Leak curFile->fname because all the gnodes have pointers to it */
   2063  1.125       dsl     if (curFile->fd != -1)
   2064  1.125       dsl 	close(curFile->fd);
   2065  1.125       dsl     free(curFile->P_str);
   2066  1.125       dsl     free(curFile);
   2067  1.125       dsl 
   2068  1.125       dsl     curFile = Lst_DeQueue(includes);
   2069    1.1       cgd 
   2070  1.125       dsl     if (curFile == NULL) {
   2071  1.125       dsl 	/* We've run out of input */
   2072   1.44     aidan 	Var_Delete(".PARSEDIR", VAR_GLOBAL);
   2073   1.44     aidan 	Var_Delete(".PARSEFILE", VAR_GLOBAL);
   2074  1.125       dsl 	return DONE;
   2075    1.1       cgd     }
   2076    1.1       cgd 
   2077  1.127       dsl     if (DEBUG(PARSE))
   2078  1.127       dsl 	fprintf(debug_file, "ParseEOF: returning to file %s, line %d, fd %d\n",
   2079  1.127       dsl 	    curFile->fname, curFile->lineno, curFile->fd);
   2080  1.127       dsl 
   2081  1.125       dsl     /* Restore the PARSEDIR/PARSEFILE variables */
   2082  1.125       dsl     ParseSetParseFile(curFile->fname);
   2083    1.1       cgd     return (CONTINUE);
   2084    1.1       cgd }
   2085    1.1       cgd 
   2086  1.127       dsl #define PARSE_RAW 1
   2087  1.127       dsl #define PARSE_SKIP 2
   2088  1.127       dsl 
   2089  1.127       dsl static char *
   2090  1.127       dsl ParseGetLine(int flags, int *length)
   2091    1.5       cgd {
   2092  1.125       dsl     IFile *cf = curFile;
   2093  1.127       dsl     char *ptr;
   2094  1.125       dsl     char ch;
   2095  1.127       dsl     char *line;
   2096  1.127       dsl     char *line_end;
   2097  1.127       dsl     char *escaped;
   2098  1.127       dsl     char *comment;
   2099  1.127       dsl     char *tp;
   2100  1.127       dsl     int len, dist;
   2101  1.125       dsl 
   2102  1.127       dsl     /* Loop through blank lines and comment lines */
   2103  1.125       dsl     for (;;) {
   2104  1.127       dsl 	cf->lineno++;
   2105  1.127       dsl 	line = cf->P_ptr;
   2106  1.127       dsl 	ptr = line;
   2107  1.127       dsl 	line_end = line;
   2108  1.127       dsl 	escaped = NULL;
   2109  1.127       dsl 	comment = NULL;
   2110  1.127       dsl 	for (;;) {
   2111  1.127       dsl 	    ch = *ptr;
   2112  1.127       dsl 	    if (ch == 0 || (ch == '\\' && ptr[1] == 0)) {
   2113  1.127       dsl 		if (cf->P_end == NULL)
   2114  1.127       dsl 		    /* End of string (aka for loop) data */
   2115  1.127       dsl 		    break;
   2116  1.127       dsl 		/* End of data read from file, read more data */
   2117  1.127       dsl 		if (ptr != cf->P_end && (ch != '\\' || ptr + 1 != cf->P_end)) {
   2118  1.127       dsl 		    Parse_Error(PARSE_FATAL, "Zero byte read from file");
   2119  1.127       dsl 		    return NULL;
   2120  1.127       dsl 		}
   2121  1.127       dsl 		/* Move existing data to (near) start of file buffer */
   2122  1.127       dsl 		len = cf->P_end - cf->P_ptr;
   2123  1.127       dsl 		tp = cf->P_str + 32;
   2124  1.127       dsl 		memmove(tp, cf->P_ptr, len);
   2125  1.127       dsl 		dist = cf->P_ptr - tp;
   2126  1.127       dsl 		/* Update all pointers to reflect moved data */
   2127  1.127       dsl 		ptr -= dist;
   2128  1.127       dsl 		line -= dist;
   2129  1.127       dsl 		line_end -= dist;
   2130  1.127       dsl 		if (escaped)
   2131  1.127       dsl 		    escaped -= dist;
   2132  1.127       dsl 		if (comment)
   2133  1.127       dsl 		    comment -= dist;
   2134  1.127       dsl 		cf->P_ptr = tp;
   2135  1.127       dsl 		tp += len;
   2136  1.127       dsl 		cf->P_end = tp;
   2137  1.127       dsl 		/* Try to read more data from file into buffer space */
   2138  1.127       dsl 		len = cf->P_str + cf->P_buflen - tp - 32;
   2139  1.127       dsl 		if (len <= 0) {
   2140  1.127       dsl 		    /* We need a bigger buffer to hold this line */
   2141  1.127       dsl 		    tp = erealloc(cf->P_str, cf->P_buflen + IFILE_BUFLEN);
   2142  1.127       dsl 		    cf->P_end = cf->P_end - cf->P_str + tp;
   2143  1.127       dsl 		    ptr = ptr - cf->P_str + tp;
   2144  1.127       dsl 		    line = line - cf->P_str + tp;
   2145  1.127       dsl 		    line_end = line_end - cf->P_str + tp;
   2146  1.127       dsl 		    if (escaped)
   2147  1.127       dsl 			escaped = escaped - cf->P_str + tp;
   2148  1.127       dsl 		    if (comment)
   2149  1.127       dsl 			comment = comment - cf->P_str + tp;
   2150  1.127       dsl 		    cf->P_str = tp;
   2151  1.127       dsl 		    tp = cf->P_end;
   2152  1.127       dsl 		    len += IFILE_BUFLEN;
   2153  1.127       dsl 		}
   2154  1.127       dsl 		len = read(cf->fd, tp, len);
   2155  1.127       dsl 		if (len <= 0) {
   2156  1.127       dsl 		    if (len < 0) {
   2157  1.127       dsl 			Parse_Error(PARSE_FATAL, "Makefile read error: %s",
   2158  1.127       dsl 				strerror(errno));
   2159  1.127       dsl 			return NULL;
   2160  1.127       dsl 		    }
   2161  1.127       dsl 		    /* End of file */
   2162  1.127       dsl 		    break;
   2163  1.127       dsl 		}
   2164  1.127       dsl 		/* 0 terminate the data, and update end pointer */
   2165  1.127       dsl 		tp += len;
   2166  1.127       dsl 		cf->P_end = tp;
   2167  1.127       dsl 		*tp = 0;
   2168  1.127       dsl 		/* Process newly read characters */
   2169  1.127       dsl 		continue;
   2170  1.127       dsl 	    }
   2171  1.127       dsl 
   2172  1.127       dsl 	    if (ch == '\\') {
   2173  1.127       dsl 		/* Don't treat next character as special, remember first one */
   2174  1.127       dsl 		if (escaped == NULL)
   2175  1.127       dsl 		    escaped = ptr;
   2176  1.127       dsl 		if (ptr[1] == '\n')
   2177  1.127       dsl 		    cf->lineno++;
   2178  1.127       dsl 		ptr += 2;
   2179  1.127       dsl 		line_end = ptr;
   2180  1.127       dsl 		continue;
   2181  1.127       dsl 	    }
   2182  1.127       dsl 	    if (ch == '#' && comment == NULL) {
   2183  1.127       dsl 		/* Remember first '#' for comment stripping */
   2184  1.127       dsl 		comment = line_end;
   2185  1.127       dsl 	    }
   2186  1.127       dsl 	    ptr++;
   2187  1.125       dsl 	    if (ch == '\n')
   2188  1.127       dsl 		break;
   2189  1.127       dsl 	    if (!isspace((unsigned char)ch))
   2190  1.127       dsl 		/* We are not interested in trailing whitespace */
   2191  1.127       dsl 		line_end = ptr;
   2192  1.127       dsl 	}
   2193  1.125       dsl 
   2194  1.127       dsl 	/* Save next 'to be processed' location */
   2195  1.127       dsl 	cf->P_ptr = ptr;
   2196  1.127       dsl 
   2197  1.127       dsl 	/* Check we have a non-comment, non-blank line */
   2198  1.127       dsl 	if (line_end == line || comment == line) {
   2199  1.127       dsl 	    if (ch == 0)
   2200  1.127       dsl 		/* At end of file */
   2201  1.127       dsl 		return NULL;
   2202  1.127       dsl 	    /* Parse another line */
   2203  1.125       dsl 	    continue;
   2204  1.127       dsl 	}
   2205  1.125       dsl 
   2206  1.127       dsl 	/* We now have a line of data */
   2207  1.127       dsl 	*line_end = 0;
   2208   1.27  christos 
   2209  1.127       dsl 	if (flags & PARSE_RAW) {
   2210  1.127       dsl 	    /* Leave '\' (etc) in line buffer (eg 'for' lines) */
   2211  1.127       dsl 	    *length = line_end - line;
   2212  1.127       dsl 	    return line;
   2213  1.127       dsl 	}
   2214    1.5       cgd 
   2215  1.127       dsl 	if (flags & PARSE_SKIP) {
   2216  1.127       dsl 	    /* Completely ignore non-directives */
   2217  1.127       dsl 	    if (line[0] != '.')
   2218  1.127       dsl 		continue;
   2219  1.127       dsl 	    /* We could do more of the .else/.elif/.endif checks here */
   2220  1.127       dsl 	}
   2221  1.127       dsl 	break;
   2222  1.127       dsl     }
   2223    1.5       cgd 
   2224  1.127       dsl     /* Brutally ignore anything after a non-escaped '#' in non-commands */
   2225  1.127       dsl     if (comment != NULL && line[0] != '\t') {
   2226  1.127       dsl 	line_end = comment;
   2227  1.127       dsl 	*line_end = 0;
   2228  1.127       dsl     }
   2229    1.5       cgd 
   2230  1.127       dsl     /* If we didn't see a '\\' then the in-situ data is fine */
   2231  1.127       dsl     if (escaped == NULL) {
   2232  1.127       dsl 	*length = line_end - line;
   2233  1.127       dsl 	return line;
   2234  1.127       dsl     }
   2235    1.5       cgd 
   2236  1.127       dsl     /* Remove escapes from '\n' and '#' */
   2237  1.127       dsl     tp = ptr = escaped;
   2238  1.127       dsl     escaped = line;
   2239  1.127       dsl     for (; ; *tp++ = ch) {
   2240  1.127       dsl 	ch = *ptr++;
   2241  1.127       dsl 	if (ch != '\\') {
   2242  1.127       dsl 	    if (ch == 0)
   2243  1.127       dsl 		break;
   2244  1.127       dsl 	    continue;
   2245  1.127       dsl 	}
   2246    1.5       cgd 
   2247  1.127       dsl 	ch = *ptr++;
   2248  1.127       dsl 	if (ch == 0) {
   2249  1.127       dsl 	    /* Delete '\\' at end of buffer */
   2250  1.127       dsl 	    tp--;
   2251  1.127       dsl 	    break;
   2252  1.127       dsl 	}
   2253   1.27  christos 
   2254  1.127       dsl 	if (ch == '#')
   2255  1.127       dsl 	    /* Delete '\\' from before '#' */
   2256  1.127       dsl 	    continue;
   2257   1.27  christos 
   2258  1.127       dsl 	if (ch != '\n') {
   2259  1.127       dsl 	    /* Leave '\\' in buffer for later */
   2260  1.127       dsl 	    *tp++ = '\\';
   2261  1.127       dsl 	    /* Make sure we don't delete an escaped ' ' from the line end */
   2262  1.127       dsl 	    escaped = tp + 1;
   2263  1.127       dsl 	    continue;
   2264  1.127       dsl 	}
   2265   1.27  christos 
   2266  1.127       dsl 	/* Escaped '\n' replace all whitespace with a single ' ' */
   2267  1.127       dsl 	while (tp > escaped && isspace((unsigned char)tp[-1]))
   2268  1.127       dsl 	    /* Back up - stopping at "\ " */
   2269  1.127       dsl 	    tp--;
   2270  1.127       dsl 	while (ptr[0] == ' ' || ptr[0] == '\t')
   2271  1.127       dsl 	    ptr++;
   2272  1.127       dsl 	ch = ' ';
   2273  1.127       dsl     }
   2274   1.27  christos 
   2275  1.127       dsl     /* Delete any trailing spaces - eg from empty continuations */
   2276  1.127       dsl     while (tp > escaped && isspace((unsigned char)tp[-1]))
   2277  1.127       dsl 	tp--;
   2278   1.27  christos 
   2279  1.127       dsl     *tp = 0;
   2280  1.127       dsl     *length = tp - line;
   2281    1.5       cgd     return line;
   2282    1.5       cgd }
   2283    1.1       cgd 
   2284    1.1       cgd /*-
   2285    1.1       cgd  *---------------------------------------------------------------------
   2286    1.1       cgd  * ParseReadLine --
   2287    1.1       cgd  *	Read an entire line from the input file. Called only by Parse_File.
   2288    1.1       cgd  *	To facilitate escaped newlines and what have you, a character is
   2289    1.1       cgd  *	buffered in 'lastc', which is '\0' when no characters have been
   2290    1.1       cgd  *	read. When we break out of the loop, c holds the terminating
   2291    1.1       cgd  *	character and lastc holds a character that should be added to
   2292    1.1       cgd  *	the line (unless we don't read anything but a terminator).
   2293    1.1       cgd  *
   2294    1.1       cgd  * Results:
   2295    1.1       cgd  *	A line w/o its newline
   2296    1.1       cgd  *
   2297    1.1       cgd  * Side Effects:
   2298    1.1       cgd  *	Only those associated with reading a character
   2299    1.1       cgd  *---------------------------------------------------------------------
   2300    1.1       cgd  */
   2301    1.1       cgd static char *
   2302   1.84       wiz ParseReadLine(void)
   2303    1.1       cgd {
   2304    1.9       jtc     char 	  *line;    	/* Result */
   2305    1.1       cgd     int	    	  lineLength;	/* Length of result */
   2306   1.95     enami     int	    	  lineno;	/* Saved line # */
   2307    1.1       cgd 
   2308    1.5       cgd     for (;;) {
   2309  1.127       dsl 	line = ParseGetLine(0, &lineLength);
   2310  1.127       dsl 	if (line == NULL)
   2311  1.127       dsl 	    return NULL;
   2312    1.1       cgd 
   2313  1.127       dsl 	if (line[0] != '.')
   2314  1.127       dsl 	    return line;
   2315  1.121       dsl 
   2316  1.121       dsl 	/*
   2317  1.127       dsl 	 * The line might be a conditional. Ask the conditional module
   2318  1.127       dsl 	 * about it and act accordingly
   2319  1.121       dsl 	 */
   2320  1.127       dsl 	switch (Cond_Eval(line)) {
   2321  1.127       dsl 	case COND_SKIP:
   2322  1.127       dsl 	    /* Skip to next conditional that evaluates to COND_PARSE.  */
   2323  1.127       dsl 	    do {
   2324  1.127       dsl 		line = ParseGetLine(PARSE_SKIP, &lineLength);
   2325  1.127       dsl 	    } while (line && Cond_Eval(line) != COND_PARSE);
   2326  1.127       dsl 	    if (line == NULL)
   2327  1.121       dsl 		break;
   2328  1.127       dsl 	    continue;
   2329  1.127       dsl 	case COND_PARSE:
   2330  1.127       dsl 	    continue;
   2331  1.127       dsl 	case COND_INVALID:    /* Not a conditional line */
   2332  1.127       dsl 	    if (!For_Eval(line))
   2333    1.1       cgd 		break;
   2334  1.127       dsl 	    lineno = curFile->lineno;
   2335  1.127       dsl 	    /* Skip after the matching end */
   2336  1.121       dsl 	    do {
   2337  1.127       dsl 		line = ParseGetLine(PARSE_RAW, &lineLength);
   2338  1.121       dsl 		if (line == NULL) {
   2339  1.121       dsl 		    Parse_Error(PARSE_FATAL,
   2340  1.121       dsl 			     "Unexpected end of file in for loop.\n");
   2341    1.5       cgd 		    break;
   2342  1.121       dsl 		}
   2343  1.127       dsl 	    } while (For_Eval(line));
   2344  1.127       dsl 	    /* Stash each iteration as a new 'input file' */
   2345  1.127       dsl 	    For_Run(lineno);
   2346  1.127       dsl 	    /* Read next line from for-loop buffer */
   2347  1.127       dsl 	    continue;
   2348    1.1       cgd 	}
   2349  1.127       dsl 	return (line);
   2350    1.1       cgd     }
   2351    1.1       cgd }
   2352    1.1       cgd 
   2353    1.1       cgd /*-
   2354    1.1       cgd  *-----------------------------------------------------------------------
   2355    1.1       cgd  * ParseFinishLine --
   2356    1.1       cgd  *	Handle the end of a dependency group.
   2357    1.1       cgd  *
   2358    1.1       cgd  * Results:
   2359    1.1       cgd  *	Nothing.
   2360    1.1       cgd  *
   2361    1.1       cgd  * Side Effects:
   2362    1.1       cgd  *	inLine set FALSE. 'targets' list destroyed.
   2363    1.1       cgd  *
   2364    1.1       cgd  *-----------------------------------------------------------------------
   2365    1.1       cgd  */
   2366    1.1       cgd static void
   2367   1.84       wiz ParseFinishLine(void)
   2368    1.1       cgd {
   2369    1.1       cgd     if (inLine) {
   2370  1.119       dsl 	Lst_ForEach(targets, Suff_EndTransform, NULL);
   2371   1.97  christos 	Lst_Destroy(targets, ParseHasCommands);
   2372    1.9       jtc 	targets = NULL;
   2373    1.1       cgd 	inLine = FALSE;
   2374    1.1       cgd     }
   2375    1.1       cgd }
   2376   1.27  christos 
   2377    1.1       cgd 
   2378    1.1       cgd /*-
   2379    1.1       cgd  *---------------------------------------------------------------------
   2380    1.1       cgd  * Parse_File --
   2381    1.1       cgd  *	Parse a file into its component parts, incorporating it into the
   2382    1.1       cgd  *	current dependency graph. This is the main function and controls
   2383    1.1       cgd  *	almost every other function in this module
   2384    1.1       cgd  *
   2385   1.84       wiz  * Input:
   2386   1.84       wiz  *	name		the name of the file being read
   2387  1.125       dsl  *	fd		Open file to makefile to parse
   2388   1.84       wiz  *
   2389    1.1       cgd  * Results:
   2390    1.1       cgd  *	None
   2391    1.1       cgd  *
   2392    1.1       cgd  * Side Effects:
   2393  1.125       dsl  *	closes fd.
   2394    1.1       cgd  *	Loads. Nodes are added to the list of all targets, nodes and links
   2395    1.1       cgd  *	are added to the dependency graph. etc. etc. etc.
   2396    1.1       cgd  *---------------------------------------------------------------------
   2397    1.1       cgd  */
   2398    1.1       cgd void
   2399  1.125       dsl Parse_File(const char *name, int fd)
   2400    1.1       cgd {
   2401  1.117       dsl     char	  *cp;		/* pointer into the line */
   2402  1.117       dsl     char          *line;	/* the line we're working on */
   2403    1.1       cgd 
   2404    1.1       cgd     inLine = FALSE;
   2405    1.1       cgd     fatals = 0;
   2406   1.44     aidan 
   2407  1.125       dsl     Parse_SetInput(name, 0, fd, NULL);
   2408    1.1       cgd 
   2409    1.1       cgd     do {
   2410  1.127       dsl 	for (; (line = ParseReadLine()) != NULL; ) {
   2411  1.120       dsl 	    if (DEBUG(PARSE))
   2412  1.127       dsl 		fprintf(debug_file, "ParseReadLine (%d): '%s'\n",
   2413  1.127       dsl 			curFile->lineno, line);
   2414    1.1       cgd 	    if (*line == '.') {
   2415    1.1       cgd 		/*
   2416    1.1       cgd 		 * Lines that begin with the special character are either
   2417    1.1       cgd 		 * include or undef directives.
   2418    1.1       cgd 		 */
   2419  1.127       dsl 		for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
   2420    1.1       cgd 		    continue;
   2421    1.1       cgd 		}
   2422   1.38  christos 		if (strncmp(cp, "include", 7) == 0 ||
   2423  1.127       dsl 			((cp[0] == 's' || cp[0] == '-') &&
   2424  1.127       dsl 			    strncmp(&cp[1], "include", 7) == 0)) {
   2425   1.97  christos 		    ParseDoInclude(cp);
   2426  1.117       dsl 		    continue;
   2427  1.117       dsl 		}
   2428  1.117       dsl 		if (strncmp(cp, "undef", 5) == 0) {
   2429    1.1       cgd 		    char *cp2;
   2430  1.127       dsl 		    for (cp += 5; isspace((unsigned char) *cp); cp++)
   2431    1.1       cgd 			continue;
   2432    1.9       jtc 		    for (cp2 = cp; !isspace((unsigned char) *cp2) &&
   2433  1.127       dsl 				   (*cp2 != '\0'); cp2++)
   2434    1.1       cgd 			continue;
   2435    1.1       cgd 		    *cp2 = '\0';
   2436    1.1       cgd 		    Var_Delete(cp, VAR_GLOBAL);
   2437  1.117       dsl 		    continue;
   2438    1.1       cgd 		}
   2439    1.1       cgd 	    }
   2440   1.27  christos 
   2441    1.6       jtc 	    if (*line == '\t') {
   2442    1.1       cgd 		/*
   2443    1.6       jtc 		 * If a line starts with a tab, it can only hope to be
   2444    1.6       jtc 		 * a creation command.
   2445    1.1       cgd 		 */
   2446  1.127       dsl 	      shellCommand:
   2447   1.40  christos 		for (cp = line + 1; isspace ((unsigned char)*cp); cp++) {
   2448    1.1       cgd 		    continue;
   2449    1.1       cgd 		}
   2450    1.1       cgd 		if (*cp) {
   2451  1.117       dsl 		    if (!inLine)
   2452   1.97  christos 			Parse_Error(PARSE_FATAL,
   2453   1.25  christos 				     "Unassociated shell command \"%s\"",
   2454    1.1       cgd 				     cp);
   2455  1.117       dsl 		    /*
   2456  1.117       dsl 		     * So long as it's not a blank line and we're actually
   2457  1.117       dsl 		     * in a dependency spec, add the command to the list of
   2458  1.117       dsl 		     * commands of all targets in the dependency spec
   2459  1.117       dsl 		     */
   2460  1.127       dsl 		    cp = estrdup(cp);
   2461  1.117       dsl 		    Lst_ForEach(targets, ParseAddCmd, cp);
   2462  1.117       dsl #ifdef CLEANUP
   2463  1.127       dsl 		    Lst_AtEnd(targCmds, cp);
   2464  1.117       dsl #endif
   2465    1.1       cgd 		}
   2466  1.117       dsl 		continue;
   2467  1.117       dsl 	    }
   2468  1.117       dsl 
   2469    1.5       cgd #ifdef SYSVINCLUDE
   2470  1.117       dsl 	    if (((strncmp(line, "include", 7) == 0 &&
   2471  1.117       dsl 		    isspace((unsigned char) line[7])) ||
   2472  1.117       dsl 			((line[0] == 's' || line[0] == '-') &&
   2473  1.117       dsl 			    strncmp(&line[1], "include", 7) == 0 &&
   2474  1.117       dsl 			    isspace((unsigned char) line[8]))) &&
   2475  1.117       dsl 		    strchr(line, ':') == NULL) {
   2476    1.5       cgd 		/*
   2477    1.5       cgd 		 * It's an S3/S5-style "include".
   2478    1.5       cgd 		 */
   2479   1.97  christos 		ParseTraditionalInclude(line);
   2480  1.117       dsl 		continue;
   2481  1.117       dsl 	    }
   2482    1.5       cgd #endif
   2483  1.117       dsl 	    if (Parse_IsVar(line)) {
   2484    1.1       cgd 		ParseFinishLine();
   2485   1.97  christos 		Parse_DoVar(line, VAR_GLOBAL);
   2486  1.117       dsl 		continue;
   2487  1.117       dsl 	    }
   2488  1.117       dsl 
   2489  1.127       dsl #ifndef POSIX
   2490  1.117       dsl 	    /*
   2491  1.117       dsl 	     * To make life easier on novices, if the line is indented we
   2492  1.117       dsl 	     * first make sure the line has a dependency operator in it.
   2493  1.117       dsl 	     * If it doesn't have an operator and we're in a dependency
   2494  1.117       dsl 	     * line's script, we assume it's actually a shell command
   2495  1.117       dsl 	     * and add it to the current list of targets.
   2496  1.117       dsl 	     */
   2497  1.117       dsl 	    cp = line;
   2498  1.117       dsl 	    if (isspace((unsigned char) line[0])) {
   2499  1.127       dsl 		while ((*cp != '\0') && isspace((unsigned char) *cp))
   2500  1.117       dsl 		    cp++;
   2501  1.117       dsl 		while (*cp && (ParseIsEscaped(line, cp) ||
   2502   1.77  christos 			(*cp != ':') && (*cp != '!'))) {
   2503  1.117       dsl 		    cp++;
   2504  1.117       dsl 		}
   2505  1.127       dsl 		if (*cp == '\0') {
   2506  1.127       dsl 		    if (inLine) {
   2507  1.127       dsl 			Parse_Error(PARSE_WARNING,
   2508  1.127       dsl 				     "Shell command needs a leading tab");
   2509  1.127       dsl 			goto shellCommand;
   2510  1.127       dsl 		    }
   2511  1.127       dsl 		}
   2512  1.127       dsl 	    }
   2513   1.11   mycroft #endif
   2514  1.127       dsl 	    ParseFinishLine();
   2515   1.27  christos 
   2516  1.127       dsl 	    /*
   2517  1.127       dsl 	     * For some reason - probably to make the parser impossible -
   2518  1.127       dsl 	     * a ';' can be used to separate commands from dependencies.
   2519  1.127       dsl 	     * No attempt is made to avoid ';' inside substitution patterns.
   2520  1.127       dsl 	     */
   2521  1.127       dsl 	    for (cp = line; *cp != 0; cp++) {
   2522  1.127       dsl 		if (*cp == '\\' && cp[1] != 0) {
   2523  1.127       dsl 		    cp++;
   2524  1.127       dsl 		    continue;
   2525  1.117       dsl 		}
   2526  1.127       dsl 		if (*cp == ';')
   2527  1.127       dsl 		    break;
   2528  1.117       dsl 	    }
   2529  1.127       dsl 	    if (*cp != 0)
   2530  1.127       dsl 		/* Terminate the dependency list at the ';' */
   2531  1.127       dsl 		*cp = 0;
   2532  1.127       dsl 	    else
   2533  1.127       dsl 		cp = NULL;
   2534    1.1       cgd 
   2535  1.127       dsl 	    /*
   2536  1.127       dsl 	     * We now know it's a dependency line so it needs to have all
   2537  1.127       dsl 	     * variables expanded before being parsed. Tell the variable
   2538  1.127       dsl 	     * module to complain if some variable is undefined...
   2539  1.127       dsl 	     */
   2540  1.127       dsl 	    line = Var_Subst(NULL, line, VAR_CMD, TRUE);
   2541   1.27  christos 
   2542  1.117       dsl 	    /*
   2543  1.117       dsl 	     * Need a non-circular list for the target nodes
   2544  1.117       dsl 	     */
   2545  1.117       dsl 	    if (targets)
   2546  1.117       dsl 		Lst_Destroy(targets, NOFREE);
   2547    1.9       jtc 
   2548  1.117       dsl 	    targets = Lst_Init(FALSE);
   2549  1.117       dsl 	    inLine = TRUE;
   2550   1.27  christos 
   2551  1.117       dsl 	    ParseDoDependency(line);
   2552  1.127       dsl 	    free(line);
   2553  1.127       dsl 
   2554  1.127       dsl 	    /* If there were commands after a ';', add them now */
   2555  1.127       dsl 	    if (cp != NULL) {
   2556  1.127       dsl 		line = cp + 1;
   2557  1.127       dsl 		goto shellCommand;
   2558  1.127       dsl 	    }
   2559    1.1       cgd 	}
   2560    1.1       cgd 	/*
   2561   1.27  christos 	 * Reached EOF, but it may be just EOF of an include file...
   2562    1.1       cgd 	 */
   2563  1.123       dsl     } while (ParseEOF() == CONTINUE);
   2564    1.1       cgd 
   2565    1.1       cgd     /*
   2566    1.1       cgd      * Make sure conditionals are clean
   2567    1.1       cgd      */
   2568    1.1       cgd     Cond_End();
   2569    1.1       cgd 
   2570    1.1       cgd     if (fatals) {
   2571   1.63  christos 	(void)fprintf(stderr,
   2572   1.63  christos 	    "%s: Fatal errors encountered -- cannot continue\n",
   2573   1.63  christos 	    progname);
   2574   1.64       sjg 	PrintOnError(NULL);
   2575  1.103  christos 	exit(1);
   2576    1.1       cgd     }
   2577    1.1       cgd }
   2578    1.1       cgd 
   2579    1.1       cgd /*-
   2580    1.1       cgd  *---------------------------------------------------------------------
   2581    1.1       cgd  * Parse_Init --
   2582    1.1       cgd  *	initialize the parsing module
   2583    1.1       cgd  *
   2584    1.1       cgd  * Results:
   2585    1.1       cgd  *	none
   2586    1.1       cgd  *
   2587    1.1       cgd  * Side Effects:
   2588    1.1       cgd  *	the parseIncPath list is initialized...
   2589    1.1       cgd  *---------------------------------------------------------------------
   2590    1.1       cgd  */
   2591    1.5       cgd void
   2592   1.84       wiz Parse_Init(void)
   2593    1.1       cgd {
   2594    1.1       cgd     mainNode = NILGNODE;
   2595   1.97  christos     parseIncPath = Lst_Init(FALSE);
   2596   1.97  christos     sysIncPath = Lst_Init(FALSE);
   2597   1.97  christos     defIncPath = Lst_Init(FALSE);
   2598   1.97  christos     includes = Lst_Init(FALSE);
   2599   1.45   mycroft #ifdef CLEANUP
   2600   1.97  christos     targCmds = Lst_Init(FALSE);
   2601   1.45   mycroft #endif
   2602    1.1       cgd }
   2603    1.9       jtc 
   2604    1.9       jtc void
   2605   1.84       wiz Parse_End(void)
   2606    1.9       jtc {
   2607   1.45   mycroft #ifdef CLEANUP
   2608  1.106  christos     Lst_Destroy(targCmds, (FreeProc *)free);
   2609    1.9       jtc     if (targets)
   2610    1.9       jtc 	Lst_Destroy(targets, NOFREE);
   2611   1.74        tv     Lst_Destroy(defIncPath, Dir_Destroy);
   2612    1.9       jtc     Lst_Destroy(sysIncPath, Dir_Destroy);
   2613    1.9       jtc     Lst_Destroy(parseIncPath, Dir_Destroy);
   2614    1.9       jtc     Lst_Destroy(includes, NOFREE);	/* Should be empty now */
   2615   1.45   mycroft #endif
   2616    1.9       jtc }
   2617   1.27  christos 
   2618    1.1       cgd 
   2619    1.1       cgd /*-
   2620    1.1       cgd  *-----------------------------------------------------------------------
   2621    1.1       cgd  * Parse_MainName --
   2622    1.1       cgd  *	Return a Lst of the main target to create for main()'s sake. If
   2623    1.1       cgd  *	no such target exists, we Punt with an obnoxious error message.
   2624    1.1       cgd  *
   2625    1.1       cgd  * Results:
   2626    1.1       cgd  *	A Lst of the single node to create.
   2627    1.1       cgd  *
   2628    1.1       cgd  * Side Effects:
   2629    1.1       cgd  *	None.
   2630    1.1       cgd  *
   2631    1.1       cgd  *-----------------------------------------------------------------------
   2632    1.1       cgd  */
   2633    1.1       cgd Lst
   2634   1.84       wiz Parse_MainName(void)
   2635    1.1       cgd {
   2636   1.37      fair     Lst           mainList;	/* result list */
   2637    1.1       cgd 
   2638   1.97  christos     mainList = Lst_Init(FALSE);
   2639    1.1       cgd 
   2640    1.1       cgd     if (mainNode == NILGNODE) {
   2641   1.97  christos 	Punt("no target to make.");
   2642    1.1       cgd     	/*NOTREACHED*/
   2643    1.1       cgd     } else if (mainNode->type & OP_DOUBLEDEP) {
   2644  1.119       dsl 	(void)Lst_AtEnd(mainList, mainNode);
   2645   1.37      fair 	Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW);
   2646    1.1       cgd     }
   2647    1.5       cgd     else
   2648  1.119       dsl 	(void)Lst_AtEnd(mainList, mainNode);
   2649   1.81        pk     Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
   2650   1.37      fair     return (mainList);
   2651   1.59  christos }
   2652   1.59  christos 
   2653   1.59  christos /*-
   2654   1.59  christos  *-----------------------------------------------------------------------
   2655   1.59  christos  * ParseMark --
   2656   1.59  christos  *	Add the filename and lineno to the GNode so that we remember
   2657   1.59  christos  *	where it was first defined.
   2658   1.59  christos  *
   2659   1.59  christos  * Side Effects:
   2660   1.59  christos  *	None.
   2661   1.59  christos  *
   2662   1.59  christos  *-----------------------------------------------------------------------
   2663   1.59  christos  */
   2664   1.59  christos static void
   2665   1.84       wiz ParseMark(GNode *gn)
   2666   1.59  christos {
   2667  1.125       dsl     gn->fname = curFile->fname;
   2668  1.125       dsl     gn->lineno = curFile->lineno;
   2669    1.1       cgd }
   2670