xref: /xsrc/external/mit/oclock/dist/aclocal.m4

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# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
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# This program is distributed in the hope that it will be useful,
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# Copyright 2002  Free Software Foundation, Inc.

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#                                                          -*- Autoconf -*-
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# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.

#serial 2

# _AM_OUTPUT_DEPENDENCY_COMMANDS
# ------------------------------
AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
[for mf in $CONFIG_FILES; do
  # Strip MF so we end up with the name of the file.
  mf=`echo "$mf" | sed -e 's/:.*$//'`
  # Check whether this is an Automake generated Makefile or not.
  # We used to match only the files named `Makefile.in', but
  # some people rename them; so instead we look at the file content.
  # Grep'ing the first line is not enough: some people post-process
  # each Makefile.in and add a new line on top of each file to say so.
  # So let's grep whole file.
  if grep '^#.*generated by automake' $mf > /dev/null 2>&1; then
    dirpart=`AS_DIRNAME("$mf")`
  else
    continue
  fi
  grep '^DEP_FILES *= *[[^ @%:@]]' < "$mf" > /dev/null || continue
  # Extract the definition of DEP_FILES from the Makefile without
  # running `make'.
  DEPDIR=`sed -n -e '/^DEPDIR = / s///p' < "$mf"`
  test -z "$DEPDIR" && continue
  # When using ansi2knr, U may be empty or an underscore; expand it
  U=`sed -n -e '/^U = / s///p' < "$mf"`
  test -d "$dirpart/$DEPDIR" || mkdir "$dirpart/$DEPDIR"
  # We invoke sed twice because it is the simplest approach to
  # changing $(DEPDIR) to its actual value in the expansion.
  for file in `sed -n -e '
    /^DEP_FILES = .*\\\\$/ {
      s/^DEP_FILES = //
      :loop
	s/\\\\$//
	p
	n
	/\\\\$/ b loop
      p
    }
    /^DEP_FILES = / s/^DEP_FILES = //p' < "$mf" | \
       sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
    # Make sure the directory exists.
    test -f "$dirpart/$file" && continue
    fdir=`AS_DIRNAME(["$file"])`
    AS_MKDIR_P([$dirpart/$fdir])
    # echo "creating $dirpart/$file"
    echo '# dummy' > "$dirpart/$file"
  done
done
])# _AM_OUTPUT_DEPENDENCY_COMMANDS


# AM_OUTPUT_DEPENDENCY_COMMANDS
# -----------------------------
# This macro should only be invoked once -- use via AC_REQUIRE.
#
# This code is only required when automatic dependency tracking
# is enabled.  FIXME.  This creates each `.P' file that we will
# need in order to bootstrap the dependency handling code.
AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
[AC_CONFIG_COMMANDS([depfiles],
     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
])

# Check to see how 'make' treats includes.	-*- Autoconf -*-

# Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.

# serial 2

# AM_MAKE_INCLUDE()
# -----------------
# Check to see how make treats includes.
AC_DEFUN([AM_MAKE_INCLUDE],
[am_make=${MAKE-make}
cat > confinc << 'END'
am__doit:
	@echo done
.PHONY: am__doit
END
# If we don't find an include directive, just comment out the code.
AC_MSG_CHECKING([for style of include used by $am_make])
am__include="#"
am__quote=
_am_result=none
# First try GNU make style include.
echo "include confinc" > confmf
# We grep out `Entering directory' and `Leaving directory'
# messages which can occur if `w' ends up in MAKEFLAGS.
# In particular we don't look at `^make:' because GNU make might
# be invoked under some other name (usually "gmake"), in which
# case it prints its new name instead of `make'.
if test "`$am_make -s -f confmf 2> /dev/null | grep -v 'ing directory'`" = "done"; then
   am__include=include
   am__quote=
   _am_result=GNU
fi
# Now try BSD make style include.
if test "$am__include" = "#"; then
   echo '.include "confinc"' > confmf
   if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
      am__include=.include
      am__quote="\""
      _am_result=BSD
   fi
fi
AC_SUBST([am__include])
AC_SUBST([am__quote])
AC_MSG_RESULT([$_am_result])
rm -f confinc confmf
])

# AM_CONDITIONAL                                              -*- Autoconf -*-

# Copyright 1997, 2000, 2001 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.

# serial 5

AC_PREREQ(2.52)

# AM_CONDITIONAL(NAME, SHELL-CONDITION)
# -------------------------------------
# Define a conditional.
AC_DEFUN([AM_CONDITIONAL],
[ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
AC_SUBST([$1_TRUE])
AC_SUBST([$1_FALSE])
if $2; then
  $1_TRUE=
  $1_FALSE='#'
else
  $1_TRUE='#'
  $1_FALSE=
fi
AC_CONFIG_COMMANDS_PRE(
[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
  AC_MSG_ERROR([conditional "$1" was never defined.
Usually this means the macro was only invoked conditionally.])
fi])])

# Add --enable-maintainer-mode option to configure.
# From Jim Meyering

# Copyright 1996, 1998, 2000, 2001, 2002  Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.

# serial 2

AC_DEFUN([AM_MAINTAINER_MODE],
[AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  dnl maintainer-mode is disabled by default
  AC_ARG_ENABLE(maintainer-mode,
[  --enable-maintainer-mode enable make rules and dependencies not useful
                          (and sometimes confusing) to the casual installer],
      USE_MAINTAINER_MODE=$enableval,
      USE_MAINTAINER_MODE=no)
  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
  AM_CONDITIONAL(MAINTAINER_MODE, [test $USE_MAINTAINER_MODE = yes])
  MAINT=$MAINTAINER_MODE_TRUE
  AC_SUBST(MAINT)dnl
]
)

AU_DEFUN([jm_MAINTAINER_MODE], [AM_MAINTAINER_MODE])

# Like AC_CONFIG_HEADER, but automatically create stamp file. -*- Autoconf -*-

# Copyright 1996, 1997, 2000, 2001 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.

AC_PREREQ([2.52])

# serial 6

# AM_CONFIG_HEADER is obsolete.  It has been replaced by AC_CONFIG_HEADERS.
AU_DEFUN([AM_CONFIG_HEADER], [AC_CONFIG_HEADERS($@)])

# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
# 
# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# PKG_PROG_PKG_CONFIG([MIN-VERSION])
# ----------------------------------
AC_DEFUN([PKG_PROG_PKG_CONFIG],
[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
fi
if test -n "$PKG_CONFIG"; then
	_pkg_min_version=m4_default([$1], [0.9.0])
	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
		PKG_CONFIG=""
	fi
		
fi[]dnl
])# PKG_PROG_PKG_CONFIG

# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
#
# Check to see whether a particular set of modules exists.  Similar
# to PKG_CHECK_MODULES(), but does not set variables or print errors.
#
#
# Similar to PKG_CHECK_MODULES, make sure that the first instance of
# this or PKG_CHECK_MODULES is called, or make sure to call
# PKG_CHECK_EXISTS manually
# --------------------------------------------------------------
AC_DEFUN([PKG_CHECK_EXISTS],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
if test -n "$PKG_CONFIG" && \
    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
  m4_ifval([$2], [$2], [:])
m4_ifvaln([$3], [else
  $3])dnl
fi])


# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
# ---------------------------------------------
m4_define([_PKG_CONFIG],
[if test -n "$PKG_CONFIG"; then
    if test -n "$$1"; then
        pkg_cv_[]$1="$$1"
    else
        PKG_CHECK_EXISTS([$3],
                         [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
			 [pkg_failed=yes])
    fi
else
	pkg_failed=untried
fi[]dnl
])# _PKG_CONFIG

# _PKG_SHORT_ERRORS_SUPPORTED
# -----------------------------
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
        _pkg_short_errors_supported=yes
else
        _pkg_short_errors_supported=no
fi[]dnl
])# _PKG_SHORT_ERRORS_SUPPORTED


# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
# [ACTION-IF-NOT-FOUND])
#
#
# Note that if there is a possibility the first call to
# PKG_CHECK_MODULES might not happen, you should be sure to include an
# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
#
#
# --------------------------------------------------------------
AC_DEFUN([PKG_CHECK_MODULES],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl

pkg_failed=no
AC_MSG_CHECKING([for $1])

_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])

m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])

if test $pkg_failed = yes; then
        _PKG_SHORT_ERRORS_SUPPORTED
        if test $_pkg_short_errors_supported = yes; then
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
        else 
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
        fi
	# Put the nasty error message in config.log where it belongs
	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD

	ifelse([$4], , [AC_MSG_ERROR(dnl
[Package requirements ($2) were not met:

$$1_PKG_ERRORS

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

_PKG_TEXT
])],
		[$4])
elif test $pkg_failed = untried; then
	ifelse([$4], , [AC_MSG_FAILURE(dnl
[The pkg-config script could not be found or is too old.  Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.

_PKG_TEXT

To get pkg-config, see <http://www.freedesktop.org/software/pkgconfig>.])],
		[$4])
else
	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
        AC_MSG_RESULT([yes])
	ifelse([$3], , :, [$3])
fi[]dnl
])# PKG_CHECK_MODULES

dnl $Id: aclocal.m4,v 1.1.1.1 2008/07/30 04:08:32 mrg Exp $
dnl
dnl Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
dnl 
dnl Permission to use, copy, modify, distribute, and sell this software and its
dnl documentation for any purpose is hereby granted without fee, provided that
dnl the above copyright notice appear in all copies and that both that
dnl copyright notice and this permission notice appear in supporting
dnl documentation.
dnl 
dnl The above copyright notice and this permission notice shall be included
dnl in all copies or substantial portions of the Software.
dnl 
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
dnl IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
dnl OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
dnl ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
dnl OTHER DEALINGS IN THE SOFTWARE.
dnl 
dnl Except as contained in this notice, the name of the copyright holders shall
dnl not be used in advertising or otherwise to promote the sale, use or
dnl other dealings in this Software without prior written authorization
dnl from the copyright holders.
dnl 

# XORG_PROG_RAWCPP()
# ------------------
# Find cpp program and necessary flags for use in pre-processing text files
# such as man pages and config files
AC_DEFUN([XORG_PROG_RAWCPP],[
AC_REQUIRE([AC_PROG_CPP])
AC_PATH_PROGS(RAWCPP, [cpp], [${CPP}], 
   [$PATH:/bin:/usr/bin:/usr/lib:/usr/libexec:/usr/ccs/lib:/usr/ccs/lbin:/lib])

# Check for flag to avoid builtin definitions - assumes unix is predefined,
# which is not the best choice for supporting other OS'es, but covers most
# of the ones we need for now.
AC_MSG_CHECKING([if $RAWCPP requires -undef])
AC_LANG_CONFTEST([Does cpp redefine unix ?])
if test `${RAWCPP} < conftest.$ac_ext | grep -c 'unix'` -eq 1 ; then
	AC_MSG_RESULT([no])
else
	if test `${RAWCPP} -undef < conftest.$ac_ext | grep -c 'unix'` -eq 1 ; then
		RAWCPPFLAGS=-undef
		AC_MSG_RESULT([yes])
	else
		AC_MSG_ERROR([${RAWCPP} defines unix with or without -undef.  I don't know what to do.])
	fi
fi
rm -f conftest.$ac_ext

AC_MSG_CHECKING([if $RAWCPP requires -traditional])
AC_LANG_CONFTEST([Does cpp preserve   "whitespace"?])
if test `${RAWCPP} < conftest.$ac_ext | grep -c 'preserve   \"'` -eq 1 ; then
	AC_MSG_RESULT([no])
else
	if test `${RAWCPP} -traditional < conftest.$ac_ext | grep -c 'preserve   \"'` -eq 1 ; then
		RAWCPPFLAGS="${RAWCPPFLAGS} -traditional"
		AC_MSG_RESULT([yes])
	else
		AC_MSG_ERROR([${RAWCPP} does not preserve whitespace with or without -traditional.  I don't know what to do.])
	fi
fi
rm -f conftest.$ac_ext
AC_SUBST(RAWCPPFLAGS)
]) # XORG_PROG_RAWCPP

# XORG_MANPAGE_SECTIONS()
# -----------------------
# Determine which sections man pages go in for the different man page types
# on this OS - replaces *ManSuffix settings in old Imake *.cf per-os files.
# Not sure if there's any better way than just hardcoding by OS name.
# Override default settings by setting environment variables

AC_DEFUN([XORG_MANPAGE_SECTIONS],[
AC_REQUIRE([AC_CANONICAL_HOST])

if test x$APP_MAN_SUFFIX = x    ; then
    case $host_os in
	linux*)	APP_MAN_SUFFIX=1x ;;
	*)	APP_MAN_SUFFIX=1  ;;
    esac
fi
if test x$APP_MAN_DIR = x    ; then
    case $host_os in
	linux*)	APP_MAN_DIR='$(mandir)/man1' ;;
	*)	APP_MAN_DIR='$(mandir)/man$(APP_MAN_SUFFIX)' ;;
    esac
fi

if test x$LIB_MAN_SUFFIX = x    ; then
    case $host_os in
	linux*)	LIB_MAN_SUFFIX=3x ;;
	*)	LIB_MAN_SUFFIX=3  ;;
    esac
fi
if test x$LIB_MAN_DIR = x    ; then
    case $host_os in
	linux*)	LIB_MAN_DIR='$(mandir)/man3' ;;
	*)	LIB_MAN_DIR='$(mandir)/man$(LIB_MAN_SUFFIX)' ;;
    esac
fi

if test x$FILE_MAN_SUFFIX = x    ; then
    case $host_os in
	linux*)		FILE_MAN_SUFFIX=5x ;;
	solaris*)	FILE_MAN_SUFFIX=4  ;;
	*)		FILE_MAN_SUFFIX=5  ;;
    esac
fi
if test x$FILE_MAN_DIR = x    ; then
    case $host_os in
	linux*)	FILE_MAN_DIR='$(mandir)/man5' ;;
	*)	FILE_MAN_DIR='$(mandir)/man$(FILE_MAN_SUFFIX)' ;;
    esac
fi

# In Imake's linux.cf, the misc man suffix & dir was only changed for 
# LinuxDebian, not other Linuxes, so we leave it unchanged here
if test x$MISC_MAN_SUFFIX = x    ; then
    case $host_os in
#	linux*)		MISC_MAN_SUFFIX=7x ;;
	solaris*)	MISC_MAN_SUFFIX=5  ;;
	*)		MISC_MAN_SUFFIX=7  ;;
    esac
fi
if test x$MISC_MAN_DIR = x    ; then
    case $host_os in
#	linux*)	MISC_MAN_DIR='$(mandir)/man7' ;;
	*)	MISC_MAN_DIR='$(mandir)/man$(MISC_MAN_SUFFIX)' ;;
    esac
fi

# In Imake's linux.cf, the driver man suffix & dir was only changed for 
# LinuxDebian, not other Linuxes, so we leave it unchanged here
if test x$DRIVER_MAN_SUFFIX = x    ; then
    case $host_os in
#	linux*)		DRIVER_MAN_SUFFIX=4x ;;
	solaris*)	DRIVER_MAN_SUFFIX=7  ;;
	*)		DRIVER_MAN_SUFFIX=4  ;;
    esac
fi
if test x$DRIVER_MAN_DIR = x    ; then
    case $host_os in
#	linux*)	DRIVER_MAN_DIR='$(mandir)/man4' ;;
	*)	DRIVER_MAN_DIR='$(mandir)/man$(DRIVER_MAN_SUFFIX)' ;;
    esac
fi

if test x$ADMIN_MAN_SUFFIX = x    ; then
    case $host_os in
	solaris*)	ADMIN_MAN_SUFFIX=1m ;;
	*)		ADMIN_MAN_SUFFIX=8  ;;
    esac
fi
if test x$ADMIN_MAN_DIR = x    ; then
    ADMIN_MAN_DIR='$(mandir)/man$(ADMIN_MAN_SUFFIX)'
fi


AC_SUBST([APP_MAN_SUFFIX])
AC_SUBST([LIB_MAN_SUFFIX])
AC_SUBST([FILE_MAN_SUFFIX])
AC_SUBST([MISC_MAN_SUFFIX])
AC_SUBST([DRIVER_MAN_SUFFIX])
AC_SUBST([ADMIN_MAN_SUFFIX])
AC_SUBST([APP_MAN_DIR])
AC_SUBST([LIB_MAN_DIR])
AC_SUBST([FILE_MAN_DIR])
AC_SUBST([MISC_MAN_DIR])
AC_SUBST([DRIVER_MAN_DIR])
AC_SUBST([ADMIN_MAN_DIR])
]) # XORG_MANPAGE_SECTIONS

# XORG_CHECK_LINUXDOC
# -------------------
# Defines the variable MAKE_TEXT if the necessary tools and
# files are found. $(MAKE_TEXT) blah.sgml will then produce blah.txt.
# Whether or not the necessary tools and files are found can be checked
# with the AM_CONDITIONAL "BUILD_LINUXDOC"
AC_DEFUN([XORG_CHECK_LINUXDOC],[
AC_CHECK_FILE(
	[$prefix/share/X11/sgml/defs.ent], 
	[DEFS_ENT_PATH=$prefix/share/X11/sgml],
	[DEFS_ENT_PATH=]
)

AC_PATH_PROG(LINUXDOC, linuxdoc)
AC_PATH_PROG(PS2PDF, ps2pdf)

AC_MSG_CHECKING([Whether to build documentation])

if test x$DEFS_ENT_PATH != x && test x$LINUXDOC != x ; then
   BUILDDOC=yes
else
   BUILDDOC=no
fi

AM_CONDITIONAL(BUILD_LINUXDOC, [test x$BUILDDOC = xyes])

AC_MSG_RESULT([$BUILDDOC])

AC_MSG_CHECKING([Whether to build pdf documentation])

if test x$PS2PDF != x ; then
   BUILDPDFDOC=yes
else
   BUILDPDFDOC=no
fi

AM_CONDITIONAL(BUILD_PDFDOC, [test x$BUILDPDFDOC = xyes])

AC_MSG_RESULT([$BUILDPDFDOC])

MAKE_TEXT="SGML_SEARCH_PATH=$DEFS_ENT_PATH GROFF_NO_SGR=y $LINUXDOC -B txt"
MAKE_PS="SGML_SEARCH_PATH=$DEFS_ENT_PATH $LINUXDOC -B latex --papersize=letter --output=ps"
MAKE_PDF="$PS2PDF"
MAKE_HTML="SGML_SEARCH_PATH=$DEFS_ENT_PATH $LINUXDOC  -B html --split=0"

AC_SUBST(MAKE_TEXT)
AC_SUBST(MAKE_PS)
AC_SUBST(MAKE_PDF)
AC_SUBST(MAKE_HTML)
]) # XORG_CHECK_LINUXDOC

# XORG_CHECK_MALLOC_ZERO
# ----------------------
# Defines {MALLOC,XMALLOC,XTMALLOC}_ZERO_CFLAGS appropriately if
# malloc(0) returns NULL.  Packages should add one of these cflags to
# their AM_CFLAGS (or other appropriate *_CFLAGS) to use them.
AC_DEFUN([XORG_CHECK_MALLOC_ZERO],[
AC_ARG_ENABLE(malloc0returnsnull,
	AC_HELP_STRING([--enable-malloc0returnsnull],
		       [malloc(0) returns NULL (default: auto)]),
	[MALLOC_ZERO_RETURNS_NULL=$enableval],
	[MALLOC_ZERO_RETURNS_NULL=auto])

AC_MSG_CHECKING([whether malloc(0) returns NULL])
if test "x$MALLOC_ZERO_RETURNS_NULL" = xauto; then
	AC_RUN_IFELSE([
char *malloc();
char *realloc();
char *calloc();
main() {
    char *m0, *r0, *c0, *p;
    m0 = malloc(0);
    p = malloc(10);
    r0 = realloc(p,0);
    c0 = calloc(0);
    exit(m0 == 0 || r0 == 0 || c0 == 0 ? 0 : 1);
}],
		[MALLOC_ZERO_RETURNS_NULL=yes],
		[MALLOC_ZERO_RETURNS_NULL=no])
fi
AC_MSG_RESULT([$MALLOC_ZERO_RETURNS_NULL])

if test "x$MALLOC_ZERO_RETURNS_NULL" = xyes; then
	MALLOC_ZERO_CFLAGS="-DMALLOC_0_RETURNS_NULL"
	XMALLOC_ZERO_CFLAGS=$MALLOC_ZERO_CFLAGS
	XTMALLOC_ZERO_CFLAGS="$MALLOC_ZERO_CFLAGS -DXTMALLOC_BC"
else
	MALLOC_ZERO_CFLAGS=""
	XMALLOC_ZERO_CFLAGS=""
	XTMALLOC_ZERO_CFLAGS=""
fi

AC_SUBST([MALLOC_ZERO_CFLAGS])
AC_SUBST([XMALLOC_ZERO_CFLAGS])
AC_SUBST([XTMALLOC_ZERO_CFLAGS])
]) # XORG_CHECK_MALLOC_ZERO

dnl Copyright 2005 Red Hat, Inc
dnl
dnl Permission to use, copy, modify, distribute, and sell this software and its
dnl documentation for any purpose is hereby granted without fee, provided that
dnl the above copyright notice appear in all copies and that both that
dnl copyright notice and this permission notice appear in supporting
dnl documentation.
dnl
dnl The above copyright notice and this permission notice shall be included
dnl in all copies or substantial portions of the Software.
dnl
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
dnl IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
dnl OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
dnl ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
dnl OTHER DEALINGS IN THE SOFTWARE.
dnl
dnl Except as contained in this notice, the name of the copyright holders shall
dnl not be used in advertising or otherwise to promote the sale, use or
dnl other dealings in this Software without prior written authorization
dnl from the copyright holders.
dnl

# XORG_RELEASE_VERSION
# --------------------
# Adds --with/without-release-string and changes the PACKAGE and
# PACKAGE_TARNAME to use "$PACKAGE{_TARNAME}-$RELEASE_VERSION".  If
# no option is given, PACKAGE and PACKAGE_TARNAME are unchanged.
 
AC_DEFUN([XORG_RELEASE_VERSION],[
	AC_ARG_WITH(release-version,
			AC_HELP_STRING([--with-release-version=STRING],
				[Use release version string in package name]),
			[RELEASE_VERSION="$withval"],
			[RELEASE_VERSION=""])
	if test "x$RELEASE_VERSION" != "x"; then
		PACKAGE="$PACKAGE-$RELEASE_VERSION"
		PACKAGE_TARNAME="$PACKAGE_TARNAME-$RELEASE_VERSION"
		AC_MSG_NOTICE([Building with package name set to $PACKAGE])
	fi
])