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mkmakefile.c revision 1.27 
      1 /*	$NetBSD: mkmakefile.c,v 1.27 2014/11/15 08:21:38 uebayasi Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This software was developed by the Computer Systems Engineering group
      8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9  * contributed to Berkeley.
     10  *
     11  * All advertising materials mentioning features or use of this software
     12  * must display the following acknowledgement:
     13  *	This product includes software developed by the University of
     14  *	California, Lawrence Berkeley Laboratories.
     15  *
     16  * Redistribution and use in source and binary forms, with or without
     17  * modification, are permitted provided that the following conditions
     18  * are met:
     19  * 1. Redistributions of source code must retain the above copyright
     20  *    notice, this list of conditions and the following disclaimer.
     21  * 2. Redistributions in binary form must reproduce the above copyright
     22  *    notice, this list of conditions and the following disclaimer in the
     23  *    documentation and/or other materials provided with the distribution.
     24  * 3. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  *	from: @(#)mkmakefile.c	8.1 (Berkeley) 6/6/93
     41  */
     42 
     43 #if HAVE_NBTOOL_CONFIG_H
     44 #include "nbtool_config.h"
     45 #endif
     46 
     47 #include <sys/cdefs.h>
     48 __RCSID("$NetBSD: mkmakefile.c,v 1.27 2014/11/15 08:21:38 uebayasi Exp $");
     49 
     50 #include <sys/param.h>
     51 #include <ctype.h>
     52 #include <errno.h>
     53 #include <stdio.h>
     54 #include <stdlib.h>
     55 #include <string.h>
     56 #include <err.h>
     57 #include <util.h>
     58 #include "defs.h"
     59 #include "sem.h"
     60 
     61 /*
     62  * Make the Makefile.
     63  */
     64 
     65 static const char *srcpath(struct files *);
     66 
     67 static const char *prefix_prologue(const char *);
     68 static const char *filetype_prologue(struct filetype *);
     69 
     70 
     71 static void emitdefs(FILE *);
     72 static void emitfiles(FILE *, int, int);
     73 
     74 static void emitobjs(FILE *);
     75 static void emitallkobjs(FILE *);
     76 static int emitallkobjscb(const char *, void *, void *);
     77 static void emitattrkobjs(FILE *);
     78 static int emitattrkobjscb(const char *, void *, void *);
     79 static void emitkobjs(FILE *);
     80 static void emitcfiles(FILE *);
     81 static void emitsfiles(FILE *);
     82 static void emitrules(FILE *);
     83 static void emitload(FILE *);
     84 static void emitincludes(FILE *);
     85 static void emitappmkoptions(FILE *);
     86 static void emitsubs(FILE *, const char *, const char *, int);
     87 static int  selectopt(const char *, void *);
     88 
     89 int
     90 mkmakefile(void)
     91 {
     92 	FILE *ifp, *ofp;
     93 	int lineno;
     94 	void (*fn)(FILE *);
     95 	char *ifname;
     96 	char line[BUFSIZ], buf[200];
     97 
     98 	/* Try a makefile for the port first.
     99 	 */
    100 	(void)snprintf(buf, sizeof(buf), "arch/%s/conf/Makefile.%s",
    101 	    machine, machine);
    102 	ifname = sourcepath(buf);
    103 	if ((ifp = fopen(ifname, "r")) == NULL) {
    104 		/*
    105 		 * Try a makefile for the architecture second.
    106 		 */
    107 		(void)snprintf(buf, sizeof(buf), "arch/%s/conf/Makefile.%s",
    108 		    machinearch, machinearch);
    109 		free(ifname);
    110 		ifname = sourcepath(buf);
    111 		ifp = fopen(ifname, "r");
    112 	}
    113 	if (ifp == NULL) {
    114 		warn("cannot read %s", ifname);
    115 		goto bad2;
    116 	}
    117 
    118 	if ((ofp = fopen("Makefile.tmp", "w")) == NULL) {
    119 		warn("cannot write Makefile");
    120 		goto bad1;
    121 	}
    122 
    123 	emitdefs(ofp);
    124 
    125 	lineno = 0;
    126 	while (fgets(line, sizeof(line), ifp) != NULL) {
    127 		lineno++;
    128 		if ((version < 20090214 && line[0] != '%') || line[0] == '#') {
    129 			fputs(line, ofp);
    130 			continue;
    131 		}
    132 		if (strcmp(line, "%OBJS\n") == 0)
    133 			fn = Mflag ? emitkobjs : emitobjs;
    134 		else if (strcmp(line, "%CFILES\n") == 0)
    135 			fn = emitcfiles;
    136 		else if (strcmp(line, "%SFILES\n") == 0)
    137 			fn = emitsfiles;
    138 		else if (strcmp(line, "%RULES\n") == 0)
    139 			fn = emitrules;
    140 		else if (strcmp(line, "%LOAD\n") == 0)
    141 			fn = emitload;
    142 		else if (strcmp(line, "%INCLUDES\n") == 0)
    143 			fn = emitincludes;
    144 		else if (strcmp(line, "%MAKEOPTIONSAPPEND\n") == 0)
    145 			fn = emitappmkoptions;
    146 		else if (strncmp(line, "%VERSION ", sizeof("%VERSION ")-1) == 0) {
    147 			int newvers;
    148 			if (sscanf(line, "%%VERSION %d\n", &newvers) != 1) {
    149 				cfgxerror(ifname, lineno, "syntax error for "
    150 				    "%%VERSION");
    151 			} else
    152 				setversion(newvers);
    153 			continue;
    154 		} else {
    155 			if (version < 20090214)
    156 				cfgxerror(ifname, lineno,
    157 				    "unknown %% construct ignored: %s", line);
    158 			else
    159 				emitsubs(ofp, line, ifname, lineno);
    160 			continue;
    161 		}
    162 		(*fn)(ofp);
    163 	}
    164 
    165 	fflush(ofp);
    166 	if (ferror(ofp))
    167 		goto wrerror;
    168 
    169 	if (ferror(ifp)) {
    170 		warn("error reading %s (at line %d)", ifname, lineno);
    171 		goto bad;
    172 	}
    173 
    174 	if (fclose(ofp)) {
    175 		ofp = NULL;
    176 		goto wrerror;
    177 	}
    178 	(void)fclose(ifp);
    179 
    180 	if (moveifchanged("Makefile.tmp", "Makefile") != 0) {
    181 		warn("error renaming Makefile");
    182 		goto bad2;
    183 	}
    184 	free(ifname);
    185 	return (0);
    186 
    187  wrerror:
    188 	warn("error writing Makefile");
    189  bad:
    190 	if (ofp != NULL)
    191 		(void)fclose(ofp);
    192  bad1:
    193 	(void)fclose(ifp);
    194 	/* (void)unlink("Makefile.tmp"); */
    195  bad2:
    196 	free(ifname);
    197 	return (1);
    198 }
    199 
    200 static void
    201 emitsubs(FILE *fp, const char *line, const char *file, int lineno)
    202 {
    203 	char *nextpct;
    204 	const char *optname;
    205 	struct nvlist *option;
    206 
    207 	while (*line != '\0') {
    208 		if (*line != '%') {
    209 			fputc(*line++, fp);
    210 			continue;
    211 		}
    212 
    213 		line++;
    214 		nextpct = strchr(line, '%');
    215 		if (nextpct == NULL) {
    216 			cfgxerror(file, lineno, "unbalanced %% or "
    217 			    "unknown construct");
    218 			return;
    219 		}
    220 		*nextpct = '\0';
    221 
    222 		if (*line == '\0')
    223 			fputc('%', fp);
    224 		else {
    225 			optname = intern(line);
    226 			if (!DEFINED_OPTION(optname)) {
    227 				cfgxerror(file, lineno, "unknown option %s",
    228 				    optname);
    229 				return;
    230 			}
    231 
    232 			if ((option = ht_lookup(opttab, optname)) == NULL)
    233 				option = ht_lookup(fsopttab, optname);
    234 			if (option != NULL)
    235 				fputs(option->nv_str ? option->nv_str : "1",
    236 				    fp);
    237 			/*
    238 			 * Otherwise it's not a selected option and we don't
    239 			 * output anything.
    240 			 */
    241 		}
    242 
    243 		line = nextpct + 1;
    244 	}
    245 }
    246 
    247 /*
    248  * Return (possibly in a static buffer) the name of the `source' for a
    249  * file.  If we have `options source', or if the file is marked `always
    250  * source', this is always the path from the `file' line; otherwise we
    251  * get the .o from the obj-directory.
    252  */
    253 static const char *
    254 srcpath(struct files *fi)
    255 {
    256 #if 1
    257 	/* Always have source, don't support object dirs for kernel builds. */
    258 	return (fi->fi_path);
    259 #else
    260 	static char buf[MAXPATHLEN];
    261 
    262 	if (have_source || (fi->fi_flags & FI_ALWAYSSRC) != 0)
    263 		return (fi->fi_path);
    264 	if (objpath == NULL) {
    265 		cfgerror("obj-directory not set");
    266 		return (NULL);
    267 	}
    268 	(void)snprintf(buf, sizeof buf, "%s/%s.o", objpath, fi->fi_base);
    269 	return (buf);
    270 #endif
    271 }
    272 
    273 static const char *
    274 filetype_prologue(struct filetype *fit)
    275 {
    276 	if (*fit->fit_path == '/')
    277 		return ("");
    278 	else
    279 		return ("$S/");
    280 }
    281 
    282 static const char *
    283 prefix_prologue(const char *path)
    284 {
    285 	if (*path == '/')
    286 		return ("");
    287 	else
    288 		return ("$S/");
    289 }
    290 
    291 static void
    292 emitdefs(FILE *fp)
    293 {
    294 	struct nvlist *nv;
    295 	const char *sp;
    296 
    297 	fprintf(fp, "KERNEL_BUILD=%s\n", conffile);
    298 	fputs("IDENT=", fp);
    299 	sp = "";
    300 	for (nv = options; nv != NULL; nv = nv->nv_next) {
    301 
    302 		/* Skip any options output to a header file */
    303 		if (DEFINED_OPTION(nv->nv_name))
    304 			continue;
    305 		fprintf(fp, "%s-D%s", sp, nv->nv_name);
    306 		if (nv->nv_str)
    307 			fprintf(fp, "=\"%s\"", nv->nv_str);
    308 		sp = " ";
    309 	}
    310 	putc('\n', fp);
    311 	fprintf(fp, "PARAM=-DMAXUSERS=%d\n", maxusers);
    312 	fprintf(fp, "MACHINE=%s\n", machine);
    313 	if (*srcdir == '/' || *srcdir == '.') {
    314 		fprintf(fp, "S=\t%s\n", srcdir);
    315 	} else {
    316 		/*
    317 		 * libkern and libcompat "Makefile.inc"s want relative S
    318 		 * specification to begin with '.'.
    319 		 */
    320 		fprintf(fp, "S=\t./%s\n", srcdir);
    321 	}
    322 	for (nv = mkoptions; nv != NULL; nv = nv->nv_next)
    323 		fprintf(fp, "%s=%s\n", nv->nv_name, nv->nv_str);
    324 }
    325 
    326 static void
    327 emitobjs(FILE *fp)
    328 {
    329 	struct files *fi;
    330 	struct objects *oi;
    331 
    332 	fputs("OBJS= \\\n", fp);
    333 	TAILQ_FOREACH(fi, &allfiles, fi_next) {
    334 		if ((fi->fi_flags & FI_SEL) == 0)
    335 			continue;
    336 		fprintf(fp, "\t%s.o \\\n", fi->fi_base);
    337 	}
    338 	TAILQ_FOREACH(oi, &allobjects, oi_next) {
    339 		if ((oi->oi_flags & OI_SEL) == 0)
    340 			continue;
    341 		if (*oi->oi_path == '/') {
    342 			fprintf(fp, "\t%s \\\n", oi->oi_path);
    343 		} else {
    344 			if (oi->oi_prefix != NULL) {
    345 				fprintf(fp, "\t%s%s/%s \\\n",
    346 				    prefix_prologue(oi->oi_path),
    347 				    oi->oi_prefix, oi->oi_path);
    348 			} else {
    349 				fprintf(fp, "\t%s%s \\\n",
    350 				    filetype_prologue(&oi->oi_fit),
    351 				    oi->oi_path);
    352 			}
    353 		}
    354 	}
    355 	putc('\n', fp);
    356 }
    357 
    358 static void
    359 emitkobjs(FILE *fp)
    360 {
    361 	emitallkobjs(fp);
    362 	emitattrkobjs(fp);
    363 }
    364 
    365 static int emitallkobjsweighcb(const char *name, void *v, void *arg);
    366 static void weighattr(struct attr *a);
    367 static int attrcmp(const void *l, const void *r);
    368 
    369 struct attr **attrbuf;
    370 int attridx;
    371 
    372 static void
    373 emitallkobjs(FILE *fp)
    374 {
    375 	int i;
    376 
    377 	attrbuf = ecalloc((size_t)nattrs, sizeof(attrbuf));
    378 
    379 	ht_enumerate(attrtab, emitallkobjsweighcb, NULL);
    380 	ht_enumerate(attrtab, emitallkobjscb, fp);
    381 	qsort(attrbuf, (size_t)attridx, sizeof(struct attr *), attrcmp);
    382 
    383 	fputs("OBJS=", fp);
    384 	for (i = 0; i < attridx; i++)
    385 		fprintf(fp, " %s.ko", attrbuf[i]->a_name);
    386 	putc('\n', fp);
    387 
    388 	free(attrbuf);
    389 }
    390 
    391 static int
    392 emitallkobjscb(const char *name, void *v, void *arg)
    393 {
    394 	struct attr *a = v;
    395 
    396 	if (ht_lookup(selecttab, name) == NULL)
    397 		return 0;
    398 	if (TAILQ_EMPTY(&a->a_files))
    399 		return 0;
    400 	attrbuf[attridx++] = a;
    401 	return 0;
    402 }
    403 
    404 static int
    405 emitallkobjsweighcb(const char *name, void *v, void *arg)
    406 {
    407 	struct attr *a = v;
    408 
    409 	weighattr(a);
    410 	return 0;
    411 }
    412 
    413 static void
    414 weighattr(struct attr *a)
    415 {
    416 	struct attrlist *al;
    417 
    418 	for (al = a->a_deps; al != NULL; al = al->al_next) {
    419 		weighattr(al->al_this);
    420 	}
    421 	a->a_weight++;
    422 }
    423 
    424 static int
    425 attrcmp(const void *l, const void *r)
    426 {
    427 	const struct attr * const *a = l, * const *b = r;
    428 	const int wa = (*a)->a_weight, wb = (*b)->a_weight;
    429 	return (wa > wb) ? -1 : (wa < wb) ? 1 : 0;
    430 }
    431 
    432 static void
    433 emitattrkobjs(FILE *fp)
    434 {
    435 	extern struct	hashtab *attrtab;
    436 
    437 	ht_enumerate(attrtab, emitattrkobjscb, fp);
    438 }
    439 
    440 static int
    441 emitattrkobjscb(const char *name, void *v, void *arg)
    442 {
    443 	struct attr *a = v;
    444 	struct files *fi;
    445 	FILE *fp = arg;
    446 
    447 	if (ht_lookup(selecttab, name) == NULL)
    448 		return 0;
    449 	if (TAILQ_EMPTY(&a->a_files))
    450 		return 0;
    451 	fputc('\n', fp);
    452 	fprintf(fp, "# %s (%d)\n", name, a->a_weight);
    453 	fprintf(fp, "OBJS.%s=", name);
    454 	TAILQ_FOREACH(fi, &a->a_files, fi_anext) {
    455 		fprintf(fp, " %s.o", fi->fi_base);
    456 	}
    457 	fputc('\n', fp);
    458 	fprintf(fp, "%s.ko: ${OBJS.%s}\n", name, name);
    459 	fprintf(fp, "\t${LINK_O}\n");
    460 	return 0;
    461 }
    462 
    463 static void
    464 emitcfiles(FILE *fp)
    465 {
    466 
    467 	emitfiles(fp, 'c', 0);
    468 }
    469 
    470 static void
    471 emitsfiles(FILE *fp)
    472 {
    473 
    474 	emitfiles(fp, 's', 'S');
    475 }
    476 
    477 static void
    478 emitfiles(FILE *fp, int suffix, int upper_suffix)
    479 {
    480 	struct files *fi;
    481 	size_t len;
    482 	const char *fpath;
    483  	struct config *cf;
    484  	char swapname[100];
    485 
    486 	fprintf(fp, "%cFILES= \\\n", toupper(suffix));
    487 	TAILQ_FOREACH(fi, &allfiles, fi_next) {
    488 		if ((fi->fi_flags & FI_SEL) == 0)
    489 			continue;
    490 		fpath = srcpath(fi);
    491 		len = strlen(fpath);
    492 		if (fpath[len - 1] != suffix && fpath[len - 1] != upper_suffix)
    493 			continue;
    494 		if (*fi->fi_path == '/') {
    495 			fprintf(fp, "\t%s \\\n", fpath);
    496 		} else {
    497 			if (fi->fi_prefix != NULL) {
    498 				fprintf(fp, "\t%s%s/%s \\\n",
    499 				    prefix_prologue(fi->fi_prefix),
    500 				    fi->fi_prefix, fpath);
    501 			} else {
    502 				fprintf(fp, "\t%s%s \\\n",
    503 				    filetype_prologue(&fi->fi_fit),
    504 				    fpath);
    505 			}
    506 		}
    507 	}
    508  	/*
    509  	 * The allfiles list does not include the configuration-specific
    510  	 * C source files.  These files should be eliminated someday, but
    511  	 * for now, we have to add them to ${CFILES} (and only ${CFILES}).
    512  	 */
    513  	if (suffix == 'c') {
    514  		TAILQ_FOREACH(cf, &allcf, cf_next) {
    515  			(void)snprintf(swapname, sizeof(swapname), "swap%s.c",
    516  			    cf->cf_name);
    517  			fprintf(fp, "\t%s \\\n", swapname);
    518  		}
    519  	}
    520 	putc('\n', fp);
    521 }
    522 
    523 /*
    524  * Emit the make-rules.
    525  */
    526 static void
    527 emitrules(FILE *fp)
    528 {
    529 	struct files *fi;
    530 	const char *cp, *fpath;
    531 	int ch;
    532 
    533 	TAILQ_FOREACH(fi, &allfiles, fi_next) {
    534 		if ((fi->fi_flags & FI_SEL) == 0)
    535 			continue;
    536 		fpath = srcpath(fi);
    537 		if (*fpath == '/') {
    538 			fprintf(fp, "%s.o: %s\n", fi->fi_base, fpath);
    539 		} else {
    540 			if (fi->fi_prefix != NULL) {
    541 				fprintf(fp, "%s.o: %s%s/%s\n", fi->fi_base,
    542 				    prefix_prologue(fi->fi_prefix),
    543 				    fi->fi_prefix, fpath);
    544 			} else {
    545 				fprintf(fp, "%s.o: %s%s\n",
    546 				    fi->fi_base,
    547 				    filetype_prologue(&fi->fi_fit),
    548 				    fpath);
    549  			}
    550 		}
    551 		if (fi->fi_mkrule != NULL) {
    552 			fprintf(fp, "\t%s\n\n", fi->fi_mkrule);
    553 		} else {
    554 			fputs("\t${NORMAL_", fp);
    555 			cp = strrchr(fpath, '.');
    556 			cp = cp == NULL ? fpath : cp + 1;
    557 			while ((ch = *cp++) != '\0') {
    558 				fputc(toupper(ch), fp);
    559 			}
    560 			fputs("}\n\n", fp);
    561 		}
    562 	}
    563 }
    564 
    565 /*
    566  * Emit the load commands.
    567  *
    568  * This function is not to be called `spurt'.
    569  */
    570 static void
    571 emitload(FILE *fp)
    572 {
    573 	struct config *cf;
    574 
    575 	fputs(".MAIN: all\nall:", fp);
    576 	TAILQ_FOREACH(cf, &allcf, cf_next) {
    577 		fprintf(fp, " %s", cf->cf_name);
    578 		/*
    579 		 * If we generate multiple configs inside the same build directory
    580 		 * with a parallel build, strange things may happen, so sequentialize
    581 		 * them.
    582 		 */
    583 		if (cf != TAILQ_LAST(&allcf,conftq))
    584 			fprintf(fp, " .WAIT");
    585 	}
    586 	fputs("\n\n", fp);
    587 	TAILQ_FOREACH(cf, &allcf, cf_next) {
    588 		fprintf(fp, "KERNELS+=%s\n", cf->cf_name);
    589 		fprintf(fp, "%s: ${SYSTEM_DEP} swap%s.o vers.o build_kernel\n",
    590 		    cf->cf_name, cf->cf_name);
    591 		fprintf(fp, "swap%s.o: swap%s.c\n"
    592 		    "\t${NORMAL_C}\n\n", cf->cf_name, cf->cf_name);
    593 	}
    594 	fputs("\n", fp);
    595 }
    596 
    597 /*
    598  * Emit include headers (for any prefixes encountered)
    599  */
    600 static void
    601 emitincludes(FILE *fp)
    602 {
    603 	struct prefix *pf;
    604 
    605 	SLIST_FOREACH(pf, &allprefixes, pf_next) {
    606 		fprintf(fp, "EXTRA_INCLUDES+=\t-I%s%s\n",
    607 		    prefix_prologue(pf->pf_prefix), pf->pf_prefix);
    608 	}
    609 }
    610 
    611 /*
    612  * Emit appending makeoptions.
    613  */
    614 static void
    615 emitappmkoptions(FILE *fp)
    616 {
    617 	struct nvlist *nv;
    618 	struct condexpr *cond;
    619 
    620 	for (nv = appmkoptions; nv != NULL; nv = nv->nv_next)
    621 		fprintf(fp, "%s+=%s\n", nv->nv_name, nv->nv_str);
    622 
    623 	for (nv = condmkoptions; nv != NULL; nv = nv->nv_next) {
    624 		cond = nv->nv_ptr;
    625 		if (expr_eval(cond, selectopt, NULL))
    626 			fprintf(fp, "%s+=%s\n", nv->nv_name, nv->nv_str);
    627 		condexpr_destroy(cond);
    628 		nv->nv_ptr = NULL;
    629 	}
    630 }
    631 
    632 static int
    633 /*ARGSUSED*/
    634 selectopt(const char *name, void *context)
    635 {
    636 
    637 	return (ht_lookup(selecttab, strtolower(name)) != NULL);
    638 }
    639