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

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# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
  *)
    install_sh="\${SHELL} $am_aux_dir/install-sh"
  esac
fi
AC_SUBST(install_sh)])

# Copyright (C) 2003, 2005  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 2

# Check whether the underlying file-system supports filenames
# with a leading dot.  For instance MS-DOS doesn't.
AC_DEFUN([AM_SET_LEADING_DOT],
[rm -rf .tst 2>/dev/null
mkdir .tst 2>/dev/null
if test -d .tst; then
  am__leading_dot=.
else
  am__leading_dot=_
fi
rmdir .tst 2>/dev/null
AC_SUBST([am__leading_dot])])

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

# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008
# Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 5

# AM_MAINTAINER_MODE([DEFAULT-MODE])
# ----------------------------------
# Control maintainer-specific portions of Makefiles.
# Default is to disable them, unless `enable' is passed literally.
# For symmetry, `disable' may be passed as well.  Anyway, the user
# can override the default with the --enable/--disable switch.
AC_DEFUN([AM_MAINTAINER_MODE],
[m4_case(m4_default([$1], [disable]),
       [enable], [m4_define([am_maintainer_other], [disable])],
       [disable], [m4_define([am_maintainer_other], [enable])],
       [m4_define([am_maintainer_other], [enable])
        m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
AC_MSG_CHECKING([whether to am_maintainer_other maintainer-specific portions of Makefiles])
  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
  AC_ARG_ENABLE([maintainer-mode],
[  --][am_maintainer_other][-maintainer-mode  am_maintainer_other make rules and dependencies not useful
			  (and sometimes confusing) to the casual installer],
      [USE_MAINTAINER_MODE=$enableval],
      [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
  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])

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

# Copyright (C) 2001, 2002, 2003, 2005, 2009  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 4

# 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 this is the am__doit target
.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 $am_make])
am__include="#"
am__quote=
_am_result=none
# First try GNU make style include.
echo "include confinc" > confmf
# Ignore all kinds of additional output from `make'.
case `$am_make -s -f confmf 2> /dev/null` in #(
*the\ am__doit\ target*)
  am__include=include
  am__quote=
  _am_result=GNU
  ;;
esac
# Now try BSD make style include.
if test "$am__include" = "#"; then
   echo '.include "confinc"' > confmf
   case `$am_make -s -f confmf 2> /dev/null` in #(
   *the\ am__doit\ target*)
     am__include=.include
     am__quote="\""
     _am_result=BSD
     ;;
   esac
fi
AC_SUBST([am__include])
AC_SUBST([am__quote])
AC_MSG_RESULT([$_am_result])
rm -f confinc confmf
])

# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-

# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
# Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 6

# AM_MISSING_PROG(NAME, PROGRAM)
# ------------------------------
AC_DEFUN([AM_MISSING_PROG],
[AC_REQUIRE([AM_MISSING_HAS_RUN])
$1=${$1-"${am_missing_run}$2"}
AC_SUBST($1)])


# AM_MISSING_HAS_RUN
# ------------------
# Define MISSING if not defined so far and test if it supports --run.
# If it does, set am_missing_run to use it, otherwise, to nothing.
AC_DEFUN([AM_MISSING_HAS_RUN],
[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
AC_REQUIRE_AUX_FILE([missing])dnl
if test x"${MISSING+set}" != xset; then
  case $am_aux_dir in
  *\ * | *\	*)
    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
  *)
    MISSING="\${SHELL} $am_aux_dir/missing" ;;
  esac
fi
# Use eval to expand $SHELL
if eval "$MISSING --run true"; then
  am_missing_run="$MISSING --run "
else
  am_missing_run=
  AC_MSG_WARN([`missing' script is too old or missing])
fi
])

# Copyright (C) 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_PROG_MKDIR_P
# ---------------
# Check for `mkdir -p'.
AC_DEFUN([AM_PROG_MKDIR_P],
[AC_PREREQ([2.60])dnl
AC_REQUIRE([AC_PROG_MKDIR_P])dnl
dnl Automake 1.8 to 1.9.6 used to define mkdir_p.  We now use MKDIR_P,
dnl while keeping a definition of mkdir_p for backward compatibility.
dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
dnl Makefile.ins that do not define MKDIR_P, so we do our own
dnl adjustment using top_builddir (which is defined more often than
dnl MKDIR_P).
AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
case $mkdir_p in
  [[\\/$]]* | ?:[[\\/]]*) ;;
  */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
esac
])

# Helper functions for option handling.                     -*- Autoconf -*-

# Copyright (C) 2001, 2002, 2003, 2005, 2008  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 4

# _AM_MANGLE_OPTION(NAME)
# -----------------------
AC_DEFUN([_AM_MANGLE_OPTION],
[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])

# _AM_SET_OPTION(NAME)
# ------------------------------
# Set option NAME.  Presently that only means defining a flag for this option.
AC_DEFUN([_AM_SET_OPTION],
[m4_define(_AM_MANGLE_OPTION([$1]), 1)])

# _AM_SET_OPTIONS(OPTIONS)
# ----------------------------------
# OPTIONS is a space-separated list of Automake options.
AC_DEFUN([_AM_SET_OPTIONS],
[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])

# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
# -------------------------------------------
# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
AC_DEFUN([_AM_IF_OPTION],
[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])

# Check to make sure that the build environment is sane.    -*- Autoconf -*-

# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
# Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 5

# AM_SANITY_CHECK
# ---------------
AC_DEFUN([AM_SANITY_CHECK],
[AC_MSG_CHECKING([whether build environment is sane])
# Just in case
sleep 1
echo timestamp > conftest.file
# Reject unsafe characters in $srcdir or the absolute working directory
# name.  Accept space and tab only in the latter.
am_lf='
'
case `pwd` in
  *[[\\\"\#\$\&\'\`$am_lf]]*)
    AC_MSG_ERROR([unsafe absolute working directory name]);;
esac
case $srcdir in
  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
    AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
esac

# Do `set' in a subshell so we don't clobber the current shell's
# arguments.  Must try -L first in case configure is actually a
# symlink; some systems play weird games with the mod time of symlinks
# (eg FreeBSD returns the mod time of the symlink's containing
# directory).
if (
   set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
   if test "$[*]" = "X"; then
      # -L didn't work.
      set X `ls -t "$srcdir/configure" conftest.file`
   fi
   rm -f conftest.file
   if test "$[*]" != "X $srcdir/configure conftest.file" \
      && test "$[*]" != "X conftest.file $srcdir/configure"; then

      # If neither matched, then we have a broken ls.  This can happen
      # if, for instance, CONFIG_SHELL is bash and it inherits a
      # broken ls alias from the environment.  This has actually
      # happened.  Such a system could not be considered "sane".
      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
alias in your environment])
   fi

   test "$[2]" = conftest.file
   )
then
   # Ok.
   :
else
   AC_MSG_ERROR([newly created file is older than distributed files!
Check your system clock])
fi
AC_MSG_RESULT(yes)])

# Copyright (C) 2009  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 1

# AM_SILENT_RULES([DEFAULT])
# --------------------------
# Enable less verbose build rules; with the default set to DEFAULT
# (`yes' being less verbose, `no' or empty being verbose).
AC_DEFUN([AM_SILENT_RULES],
[AC_ARG_ENABLE([silent-rules],
[  --enable-silent-rules          less verbose build output (undo: `make V=1')
  --disable-silent-rules         verbose build output (undo: `make V=0')])
case $enable_silent_rules in
yes) AM_DEFAULT_VERBOSITY=0;;
no)  AM_DEFAULT_VERBOSITY=1;;
*)   AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
esac
AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
AM_BACKSLASH='\'
AC_SUBST([AM_BACKSLASH])dnl
_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
])

# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# AM_PROG_INSTALL_STRIP
# ---------------------
# One issue with vendor `install' (even GNU) is that you can't
# specify the program used to strip binaries.  This is especially
# annoying in cross-compiling environments, where the build's strip
# is unlikely to handle the host's binaries.
# Fortunately install-sh will honor a STRIPPROG variable, so we
# always use install-sh in `make install-strip', and initialize
# STRIPPROG with the value of the STRIP variable (set by the user).
AC_DEFUN([AM_PROG_INSTALL_STRIP],
[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
# Installed binaries are usually stripped using `strip' when the user
# run `make install-strip'.  However `strip' might not be the right
# tool to use in cross-compilation environments, therefore Automake
# will honor the `STRIP' environment variable to overrule this program.
dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
if test "$cross_compiling" != no; then
  AC_CHECK_TOOL([STRIP], [strip], :)
fi
INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
AC_SUBST([INSTALL_STRIP_PROGRAM])])

# Copyright (C) 2006, 2008  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 2

# _AM_SUBST_NOTMAKE(VARIABLE)
# ---------------------------
# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
# This macro is traced by Automake.
AC_DEFUN([_AM_SUBST_NOTMAKE])

# AM_SUBST_NOTMAKE(VARIABLE)
# ---------------------------
# Public sister of _AM_SUBST_NOTMAKE.
AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])

# Check how to create a tarball.                            -*- Autoconf -*-

# Copyright (C) 2004, 2005  Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.

# serial 2

# _AM_PROG_TAR(FORMAT)
# --------------------
# Check how to create a tarball in format FORMAT.
# FORMAT should be one of `v7', `ustar', or `pax'.
#
# Substitute a variable $(am__tar) that is a command
# writing to stdout a FORMAT-tarball containing the directory
# $tardir.
#     tardir=directory && $(am__tar) > result.tar
#
# Substitute a variable $(am__untar) that extract such
# a tarball read from stdin.
#     $(am__untar) < result.tar
AC_DEFUN([_AM_PROG_TAR],
[# Always define AMTAR for backward compatibility.
AM_MISSING_PROG([AMTAR], [tar])
m4_if([$1], [v7],
     [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
     [m4_case([$1], [ustar],, [pax],,
              [m4_fatal([Unknown tar format])])
AC_MSG_CHECKING([how to create a $1 tar archive])
# Loop over all known methods to create a tar archive until one works.
_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
_am_tools=${am_cv_prog_tar_$1-$_am_tools}
# Do not fold the above two line into one, because Tru64 sh and
# Solaris sh will not grok spaces in the rhs of `-'.
for _am_tool in $_am_tools
do
  case $_am_tool in
  gnutar)
    for _am_tar in tar gnutar gtar;
    do
      AM_RUN_LOG([$_am_tar --version]) && break
    done
    am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
    am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
    am__untar="$_am_tar -xf -"
    ;;
  plaintar)
    # Must skip GNU tar: if it does not support --format= it doesn't create
    # ustar tarball either.
    (tar --version) >/dev/null 2>&1 && continue
    am__tar='tar chf - "$$tardir"'
    am__tar_='tar chf - "$tardir"'
    am__untar='tar xf -'
    ;;
  pax)
    am__tar='pax -L -x $1 -w "$$tardir"'
    am__tar_='pax -L -x $1 -w "$tardir"'
    am__untar='pax -r'
    ;;
  cpio)
    am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
    am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
    am__untar='cpio -i -H $1 -d'
    ;;
  none)
    am__tar=false
    am__tar_=false
    am__untar=false
    ;;
  esac

  # If the value was cached, stop now.  We just wanted to have am__tar
  # and am__untar set.
  test -n "${am_cv_prog_tar_$1}" && break

  # tar/untar a dummy directory, and stop if the command works
  rm -rf conftest.dir
  mkdir conftest.dir
  echo GrepMe > conftest.dir/file
  AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
  rm -rf conftest.dir
  if test -s conftest.tar; then
    AM_RUN_LOG([$am__untar <conftest.tar])
    grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
  fi
done
rm -rf conftest.dir

AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
AC_MSG_RESULT([$am_cv_prog_tar_$1])])
AC_SUBST([am__tar])
AC_SUBST([am__untar])
]) # _AM_PROG_TAR

dnl xorg-macros.m4.  Generated from xorg-macros.m4.in xorgversion.m4 by configure.
dnl
dnl Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
dnl 
dnl Permission is hereby granted, free of charge, to any person obtaining a
dnl copy of this software and associated documentation files (the "Software"),
dnl to deal in the Software without restriction, including without limitation
dnl the rights to use, copy, modify, merge, publish, distribute, sublicense,
dnl and/or sell copies of the Software, and to permit persons to whom the
dnl Software is furnished to do so, subject to the following conditions:
dnl
dnl The above copyright notice and this permission notice (including the next
dnl paragraph) shall be included in all copies or substantial portions of the
dnl Software.
dnl
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dnl IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dnl FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
dnl THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dnl LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
dnl FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
dnl DEALINGS IN THE SOFTWARE.

# XORG_MACROS_VERSION(required-version)
# -------------------------------------
# Minimum version: 1.1.0
#
# If you're using a macro added in Version 1.1 or newer, include this in
# your configure.ac with the minimum required version, such as:
# XORG_MACROS_VERSION(1.1)
#
# To ensure that this macro is defined, also add:
# m4_ifndef([XORG_MACROS_VERSION],
#     [m4_fatal([must install xorg-macros 1.1 or later before running autoconf/autogen])])
#
#
# See the "minimum version" comment for each macro you use to see what 
# version you require.
m4_defun([XORG_MACROS_VERSION],[
m4_define([vers_have], [1.10.0])
m4_define([maj_have], m4_substr(vers_have, 0, m4_index(vers_have, [.])))
m4_define([maj_needed], m4_substr([$1], 0, m4_index([$1], [.])))
m4_if(m4_cmp(maj_have, maj_needed), 0,,
    [m4_fatal([xorg-macros major version ]maj_needed[ is required but ]vers_have[ found])])
m4_if(m4_version_compare(vers_have, [$1]), -1,
    [m4_fatal([xorg-macros version $1 or higher is required but ]vers_have[ found])])
m4_undefine([vers_have])
m4_undefine([maj_have])
m4_undefine([maj_needed])
]) # XORG_MACROS_VERSION

# XORG_PROG_RAWCPP()
# ------------------
# Minimum version: 1.0.0
#
# 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.$ac_ext | grep -c 'unix'` -eq 1 ; then
		RAWCPPFLAGS=-undef
		AC_MSG_RESULT([yes])
	# under Cygwin unix is still defined even with -undef
	elif test `${RAWCPP} -undef -ansi < conftest.$ac_ext | grep -c 'unix'` -eq 1 ; then
		RAWCPPFLAGS="-undef -ansi"
		AC_MSG_RESULT([yes, with -ansi])
	else
		AC_MSG_ERROR([${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()
# -----------------------
# Minimum version: 1.0.0
#
# 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
# Added MAN_SUBSTS in version 1.8
# Added AC_PROG_SED in version 1.8

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

if test x$APP_MAN_SUFFIX = x    ; then
    APP_MAN_SUFFIX=1
fi
if test x$APP_MAN_DIR = x    ; then
    APP_MAN_DIR='$(mandir)/man$(APP_MAN_SUFFIX)'
fi

if test x$LIB_MAN_SUFFIX = x    ; then
    LIB_MAN_SUFFIX=3
fi
if test x$LIB_MAN_DIR = x    ; then
    LIB_MAN_DIR='$(mandir)/man$(LIB_MAN_SUFFIX)'
fi

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

if test x$MISC_MAN_SUFFIX = x    ; then
    case $host_os in
	solaris*)	MISC_MAN_SUFFIX=5  ;;
	*)		MISC_MAN_SUFFIX=7  ;;
    esac
fi
if test x$MISC_MAN_DIR = x    ; then
    MISC_MAN_DIR='$(mandir)/man$(MISC_MAN_SUFFIX)'
fi

if test x$DRIVER_MAN_SUFFIX = x    ; then
    case $host_os in
	solaris*)	DRIVER_MAN_SUFFIX=7  ;;
	*)		DRIVER_MAN_SUFFIX=4  ;;
    esac
fi
if test x$DRIVER_MAN_DIR = x    ; then
    DRIVER_MAN_DIR='$(mandir)/man$(DRIVER_MAN_SUFFIX)'
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_MAN_PAGE="X Version 11"
AC_SUBST([XORG_MAN_PAGE])
MAN_SUBSTS="\
	-e 's|__vendorversion__|\"\$(PACKAGE_STRING)\" \"\$(XORG_MAN_PAGE)\"|' \
	-e 's|__xorgversion__|\"\$(PACKAGE_STRING)\" \"\$(XORG_MAN_PAGE)\"|' \
	-e 's|__xservername__|Xorg|g' \
	-e 's|__xconfigfile__|xorg.conf|g' \
	-e 's|__projectroot__|\$(prefix)|g' \
	-e 's|__apploaddir__|\$(appdefaultdir)|g' \
	-e 's|__appmansuffix__|\$(APP_MAN_SUFFIX)|g' \
	-e 's|__drivermansuffix__|\$(DRIVER_MAN_SUFFIX)|g' \
	-e 's|__adminmansuffix__|\$(ADMIN_MAN_SUFFIX)|g' \
	-e 's|__libmansuffix__|\$(LIB_MAN_SUFFIX)|g' \
	-e 's|__miscmansuffix__|\$(MISC_MAN_SUFFIX)|g' \
	-e 's|__filemansuffix__|\$(FILE_MAN_SUFFIX)|g'"
AC_SUBST([MAN_SUBSTS])

]) # XORG_MANPAGE_SECTIONS

# XORG_CHECK_SGML_DOCTOOLS([MIN-VERSION])
# ------------------------
# Minimum version: 1.7.0
#
# Defines the variable XORG_SGML_PATH containing the location of X11/defs.ent
# provided by xorg-sgml-doctools, if installed.
AC_DEFUN([XORG_CHECK_SGML_DOCTOOLS],[
AC_MSG_CHECKING([for X.Org SGML entities m4_ifval([$1],[>= $1])])
XORG_SGML_PATH=
PKG_CHECK_EXISTS([xorg-sgml-doctools m4_ifval([$1],[>= $1])],
    [XORG_SGML_PATH=`$PKG_CONFIG --variable=sgmlrootdir xorg-sgml-doctools`],
    [m4_ifval([$1],[:],
        [if test x"$cross_compiling" != x"yes" ; then
            AC_CHECK_FILE([$prefix/share/sgml/X11/defs.ent],
                          [XORG_SGML_PATH=$prefix/share/sgml])
         fi])
    ])

# Define variables STYLESHEET_SRCDIR and XSL_STYLESHEET containing
# the path and the name of the doc stylesheet
if test "x$XORG_SGML_PATH" != "x" ; then
   AC_MSG_RESULT([$XORG_SGML_PATH])
   STYLESHEET_SRCDIR=$XORG_SGML_PATH/X11
   XSL_STYLESHEET=$STYLESHEET_SRCDIR/xorg.xsl
else
   AC_MSG_RESULT([no])
fi

AC_SUBST(XORG_SGML_PATH)
AC_SUBST(STYLESHEET_SRCDIR)
AC_SUBST(XSL_STYLESHEET)
AM_CONDITIONAL([HAVE_STYLESHEETS], [test "x$XSL_STYLESHEET" != "x"])
]) # XORG_CHECK_SGML_DOCTOOLS

# XORG_CHECK_LINUXDOC
# -------------------
# Minimum version: 1.0.0
#
# 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_REQUIRE([XORG_CHECK_SGML_DOCTOOLS])
AC_REQUIRE([XORG_WITH_PS2PDF])

AC_PATH_PROG(LINUXDOC, linuxdoc)

AC_MSG_CHECKING([whether to build documentation])

if test x$XORG_SGML_PATH != x && test x$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$have_ps2pdf != xno && test x$BUILD_PDFDOC != xno; then
   BUILDPDFDOC=yes
else
   BUILDPDFDOC=no
fi

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

AC_MSG_RESULT([$BUILDPDFDOC])

MAKE_TEXT="SGML_SEARCH_PATH=$XORG_SGML_PATH GROFF_NO_SGR=y $LINUXDOC -B txt -f"
MAKE_PS="SGML_SEARCH_PATH=$XORG_SGML_PATH $LINUXDOC -B latex --papersize=letter --output=ps"
MAKE_PDF="$PS2PDF"
MAKE_HTML="SGML_SEARCH_PATH=$XORG_SGML_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_DOCBOOK
# -------------------
# Minimum version: 1.0.0
#
# Checks for the ability to build output formats from SGML DocBook source.
# For XXX in {TXT, PDF, PS, HTML}, the AM_CONDITIONAL "BUILD_XXXDOC"
# indicates whether the necessary tools and files are found and, if set,
# $(MAKE_XXX) blah.sgml will produce blah.xxx.
AC_DEFUN([XORG_CHECK_DOCBOOK],[
AC_REQUIRE([XORG_CHECK_SGML_DOCTOOLS])

BUILDTXTDOC=no
BUILDPDFDOC=no
BUILDPSDOC=no
BUILDHTMLDOC=no

AC_PATH_PROG(DOCBOOKPS, docbook2ps)
AC_PATH_PROG(DOCBOOKPDF, docbook2pdf)
AC_PATH_PROG(DOCBOOKHTML, docbook2html)
AC_PATH_PROG(DOCBOOKTXT, docbook2txt)

AC_MSG_CHECKING([whether to build text documentation])
if test x$XORG_SGML_PATH != x && test x$DOCBOOKTXT != x &&
   test x$BUILD_TXTDOC != xno; then
	BUILDTXTDOC=yes
fi
AM_CONDITIONAL(BUILD_TXTDOC, [test x$BUILDTXTDOC = xyes])
AC_MSG_RESULT([$BUILDTXTDOC])

AC_MSG_CHECKING([whether to build PDF documentation])
if test x$XORG_SGML_PATH != x && test x$DOCBOOKPDF != x &&
   test x$BUILD_PDFDOC != xno; then
	BUILDPDFDOC=yes
fi
AM_CONDITIONAL(BUILD_PDFDOC, [test x$BUILDPDFDOC = xyes])
AC_MSG_RESULT([$BUILDPDFDOC])

AC_MSG_CHECKING([whether to build PostScript documentation])
if test x$XORG_SGML_PATH != x && test x$DOCBOOKPS != x &&
   test x$BUILD_PSDOC != xno; then
	BUILDPSDOC=yes
fi
AM_CONDITIONAL(BUILD_PSDOC, [test x$BUILDPSDOC = xyes])
AC_MSG_RESULT([$BUILDPSDOC])

AC_MSG_CHECKING([whether to build HTML documentation])
if test x$XORG_SGML_PATH != x && test x$DOCBOOKHTML != x &&
   test x$BUILD_HTMLDOC != xno; then
	BUILDHTMLDOC=yes
fi
AM_CONDITIONAL(BUILD_HTMLDOC, [test x$BUILDHTMLDOC = xyes])
AC_MSG_RESULT([$BUILDHTMLDOC])

MAKE_TEXT="SGML_SEARCH_PATH=$XORG_SGML_PATH $DOCBOOKTXT"
MAKE_PS="SGML_SEARCH_PATH=$XORG_SGML_PATH $DOCBOOKPS"
MAKE_PDF="SGML_SEARCH_PATH=$XORG_SGML_PATH $DOCBOOKPDF"
MAKE_HTML="SGML_SEARCH_PATH=$XORG_SGML_PATH $DOCBOOKHTML"

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

# XORG_WITH_XMLTO([MIN-VERSION])
# ----------------
# Minimum version: 1.5.0
#
# Documentation tools are not always available on all platforms and sometimes
# not at the appropriate level. This macro enables a module to test for the
# presence of the tool and obtain it's path in separate variables. Coupled with
# the --with-xmlto option, it allows maximum flexibilty in making decisions
# as whether or not to use the xmlto package.
#
# Interface to module:
# HAVE_XMLTO: 	used in makefiles to conditionally generate documentation
# XMLTO:	returns the path of the xmlto program found
#		returns the path set by the user in the environment
# --with-xmlto:	'yes' user instructs the module to use xmlto
#		'no' user instructs the module not to use xmlto
#
# Added in version 1.10.0
# HAVE_XMLTO_TEXT: used in makefiles to conditionally generate text documentation
#                  xmlto for text output requires either lynx, links, or w3m browsers
#
# If the user sets the value of XMLTO, AC_PATH_PROG skips testing the path.
#
AC_DEFUN([XORG_WITH_XMLTO],[
AC_ARG_VAR([XMLTO], [Path to xmlto command])
AC_ARG_WITH(xmlto,
	AS_HELP_STRING([--with-xmlto],
	   [Use xmlto to regenerate documentation (default: yes, if installed)]),
	   [use_xmlto=$withval], [use_xmlto=auto])

if test "x$use_xmlto" = x"auto"; then
   AC_PATH_PROG([XMLTO], [xmlto])
   if test "x$XMLTO" = "x"; then
        AC_MSG_WARN([xmlto not found - documentation targets will be skipped])
	have_xmlto=no
   else
        have_xmlto=yes
   fi
elif test "x$use_xmlto" = x"yes" ; then
   AC_PATH_PROG([XMLTO], [xmlto])
   if test "x$XMLTO" = "x"; then
        AC_MSG_ERROR([--with-xmlto=yes specified but xmlto not found in PATH])
   fi
   have_xmlto=yes
elif test "x$use_xmlto" = x"no" ; then
   if test "x$XMLTO" != "x"; then
      AC_MSG_WARN([ignoring XMLTO environment variable since --with-xmlto=no was specified])
   fi
   have_xmlto=no
else
   AC_MSG_ERROR([--with-xmlto expects 'yes' or 'no'])
fi

# Test for a minimum version of xmlto, if provided.
m4_ifval([$1],
[if test "$have_xmlto" = yes; then
    # scrape the xmlto version
    AC_MSG_CHECKING([the xmlto version])
    xmlto_version=`$XMLTO --version 2>/dev/null | cut -d' ' -f3`
    AC_MSG_RESULT([$xmlto_version])
    AS_VERSION_COMPARE([$xmlto_version], [$1],
        [if test "x$use_xmlto" = xauto; then
            AC_MSG_WARN([xmlto version $xmlto_version found, but $1 needed])
            have_xmlto=no
        else
            AC_MSG_ERROR([xmlto version $xmlto_version found, but $1 needed])
        fi])
fi])

# Test for the ability of xmlto to generate a text target
have_xmlto_text=no
cat > conftest.xml << "EOF"
EOF
AS_IF([test "$have_xmlto" = yes],
      [AS_IF([$XMLTO --skip-validation txt conftest.xml >/dev/null 2>&1],
             [have_xmlto_text=yes],
             [AC_MSG_WARN([xmlto cannot generate text format, this format skipped])])])
rm -f conftest.xml
AM_CONDITIONAL([HAVE_XMLTO_TEXT], [test $have_xmlto_text = yes])
AM_CONDITIONAL([HAVE_XMLTO], [test "$have_xmlto" = yes])
]) # XORG_WITH_XMLTO

# XORG_WITH_ASCIIDOC([MIN-VERSION])
# ----------------
# Minimum version: 1.5.0
#
# Documentation tools are not always available on all platforms and sometimes
# not at the appropriate level. This macro enables a module to test for the
# presence of the tool and obtain it's path in separate variables. Coupled with
# the --with-asciidoc option, it allows maximum flexibilty in making decisions
# as whether or not to use the asciidoc package.
#
# Interface to module:
# HAVE_ASCIIDOC: used in makefiles to conditionally generate documentation
# ASCIIDOC:	 returns the path of the asciidoc program found
#		 returns the path set by the user in the environment
# --with-asciidoc: 'yes' user instructs the module to use asciidoc
#		  'no' user instructs the module not to use asciidoc
#
# If the user sets the value of ASCIIDOC, AC_PATH_PROG skips testing the path.
#
AC_DEFUN([XORG_WITH_ASCIIDOC],[
AC_ARG_VAR([ASCIIDOC], [Path to asciidoc command])
AC_ARG_WITH(asciidoc,
	AS_HELP_STRING([--with-asciidoc],
	   [Use asciidoc to regenerate documentation (default: yes, if installed)]),
	   [use_asciidoc=$withval], [use_asciidoc=auto])

if test "x$use_asciidoc" = x"auto"; then
   AC_PATH_PROG([ASCIIDOC], [asciidoc])
   if test "x$ASCIIDOC" = "x"; then
        AC_MSG_WARN([asciidoc not found - documentation targets will be skipped])
	have_asciidoc=no
   else
        have_asciidoc=yes
   fi
elif test "x$use_asciidoc" = x"yes" ; then
   AC_PATH_PROG([ASCIIDOC], [asciidoc])
   if test "x$ASCIIDOC" = "x"; then
        AC_MSG_ERROR([--with-asciidoc=yes specified but asciidoc not found in PATH])
   fi
   have_asciidoc=yes
elif test "x$use_asciidoc" = x"no" ; then
   if test "x$ASCIIDOC" != "x"; then
      AC_MSG_WARN([ignoring ASCIIDOC environment variable since --with-asciidoc=no was specified])
   fi
   have_asciidoc=no
else
   AC_MSG_ERROR([--with-asciidoc expects 'yes' or 'no'])
fi
m4_ifval([$1],
[if test "$have_asciidoc" = yes; then
    # scrape the asciidoc version
    AC_MSG_CHECKING([the asciidoc version])
    asciidoc_version=`$ASCIIDOC --version 2>/dev/null | cut -d' ' -f2`
    AC_MSG_RESULT([$asciidoc_version])
    AS_VERSION_COMPARE([$asciidoc_version], [$1],
        [if test "x$use_asciidoc" = xauto; then
            AC_MSG_WARN([asciidoc version $asciidoc_version found, but $1 needed])
            have_asciidoc=no
        else
            AC_MSG_ERROR([asciidoc version $asciidoc_version found, but $1 needed])
        fi])
fi])
AM_CONDITIONAL([HAVE_ASCIIDOC], [test "$have_asciidoc" = yes])
]) # XORG_WITH_ASCIIDOC

# XORG_WITH_DOXYGEN([MIN-VERSION])
# --------------------------------
# Minimum version: 1.5.0
#
# Documentation tools are not always available on all platforms and sometimes
# not at the appropriate level. This macro enables a module to test for the
# presence of the tool and obtain it's path in separate variables. Coupled with
# the --with-doxygen option, it allows maximum flexibilty in making decisions
# as whether or not to use the doxygen package.
#
# Interface to module:
# HAVE_DOXYGEN: used in makefiles to conditionally generate documentation
# DOXYGEN:	 returns the path of the doxygen program found
#		 returns the path set by the user in the environment
# --with-doxygen: 'yes' user instructs the module to use doxygen
#		  'no' user instructs the module not to use doxygen
#
# If the user sets the value of DOXYGEN, AC_PATH_PROG skips testing the path.
#
AC_DEFUN([XORG_WITH_DOXYGEN],[
AC_ARG_VAR([DOXYGEN], [Path to doxygen command])
AC_ARG_WITH(doxygen,
	AS_HELP_STRING([--with-doxygen],
	   [Use doxygen to regenerate documentation (default: yes, if installed)]),
	   [use_doxygen=$withval], [use_doxygen=auto])

if test "x$use_doxygen" = x"auto"; then
   AC_PATH_PROG([DOXYGEN], [doxygen])
   if test "x$DOXYGEN" = "x"; then
        AC_MSG_WARN([doxygen not found - documentation targets will be skipped])
	have_doxygen=no
   else
        have_doxygen=yes
   fi
elif test "x$use_doxygen" = x"yes" ; then
   AC_PATH_PROG([DOXYGEN], [doxygen])
   if test "x$DOXYGEN" = "x"; then
        AC_MSG_ERROR([--with-doxygen=yes specified but doxygen not found in PATH])
   fi
   have_doxygen=yes
elif test "x$use_doxygen" = x"no" ; then
   if test "x$DOXYGEN" != "x"; then
      AC_MSG_WARN([ignoring DOXYGEN environment variable since --with-doxygen=no was specified])
   fi
   have_doxygen=no
else
   AC_MSG_ERROR([--with-doxygen expects 'yes' or 'no'])
fi
m4_ifval([$1],
[if test "$have_doxygen" = yes; then
    # scrape the doxygen version
    AC_MSG_CHECKING([the doxygen version])
    doxygen_version=`$DOXYGEN --version 2>/dev/null`
    AC_MSG_RESULT([$doxygen_version])
    AS_VERSION_COMPARE([$doxygen_version], [$1],
        [if test "x$use_doxygen" = xauto; then
            AC_MSG_WARN([doxygen version $doxygen_version found, but $1 needed])
            have_doxygen=no
        else
            AC_MSG_ERROR([doxygen version $doxygen_version found, but $1 needed])
        fi])
fi])
AM_CONDITIONAL([HAVE_DOXYGEN], [test "$have_doxygen" = yes])
]) # XORG_WITH_DOXYGEN

# XORG_WITH_GROFF
# ----------------
# Minimum version: 1.6.0
#
# Documentation tools are not always available on all platforms and sometimes
# not at the appropriate level. This macro enables a module to test for the
# presence of the tool and obtain it's path in separate variables. Coupled with
# the --with-groff option, it allows maximum flexibilty in making decisions
# as whether or not to use the groff package.
#
# Interface to module:
# HAVE_GROFF:	 used in makefiles to conditionally generate documentation
# HAVE_GROFF_MM: the memorandum macros (-mm) package
# HAVE_GROFF_MS: the -ms macros package
# GROFF:	 returns the path of the groff program found
#		 returns the path set by the user in the environment
# --with-groff:	 'yes' user instructs the module to use groff
#		 'no' user instructs the module not to use groff
#
# Added in version 1.9.0:
# HAVE_GROFF_HTML: groff has dependencies to output HTML format:
#		   pnmcut pnmcrop pnmtopng pnmtops from the netpbm package.
#		   psselect from the psutils package.
#		   the ghostcript package. Refer to the grohtml man pages
#
# If the user sets the value of GROFF, AC_PATH_PROG skips testing the path.
#
# OS and distros often splits groff in a basic and full package, the former
# having the groff program and the later having devices, fonts and macros
# Checking for the groff executable is not enough.
#
# If macros are missing, we cannot assume that groff is useless, so we don't
# unset HAVE_GROFF or GROFF env variables.
# HAVE_GROFF_?? can never be true while HAVE_GROFF is false.
#
AC_DEFUN([XORG_WITH_GROFF],[
AC_ARG_VAR([GROFF], [Path to groff command])
AC_ARG_WITH(groff,
	AS_HELP_STRING([--with-groff],
	   [Use groff to regenerate documentation (default: yes, if installed)]),
	   [use_groff=$withval], [use_groff=auto])

if test "x$use_groff" = x"auto"; then
   AC_PATH_PROG([GROFF], [groff])
   if test "x$GROFF" = "x"; then
        AC_MSG_WARN([groff not found - documentation targets will be skipped])
	have_groff=no
   else
        have_groff=yes
   fi
elif test "x$use_groff" = x"yes" ; then
   AC_PATH_PROG([GROFF], [groff])
   if test "x$GROFF" = "x"; then
        AC_MSG_ERROR([--with-groff=yes specified but groff not found in PATH])
   fi
   have_groff=yes
elif test "x$use_groff" = x"no" ; then
   if test "x$GROFF" != "x"; then
      AC_MSG_WARN([ignoring GROFF environment variable since --with-groff=no was specified])
   fi
   have_groff=no
else
   AC_MSG_ERROR([--with-groff expects 'yes' or 'no'])
fi

# We have groff, test for the presence of the macro packages
if test "x$have_groff" = x"yes"; then
    AC_MSG_CHECKING([for ${GROFF} -ms macros])
    if ${GROFF} -ms -I. /dev/null >/dev/null 2>&1 ; then
        groff_ms_works=yes
    else
        groff_ms_works=no
    fi
    AC_MSG_RESULT([$groff_ms_works])
    AC_MSG_CHECKING([for ${GROFF} -mm macros])
    if ${GROFF} -mm -I. /dev/null >/dev/null 2>&1 ; then
        groff_mm_works=yes
    else
        groff_mm_works=no
    fi
    AC_MSG_RESULT([$groff_mm_works])
fi

# We have groff, test for HTML dependencies, one command per package
if test "x$have_groff" = x"yes"; then
   AC_PATH_PROGS(GS_PATH, [gs gswin32c])
   AC_PATH_PROG(PNMTOPNG_PATH, [pnmtopng])
   AC_PATH_PROG(PSSELECT_PATH, [psselect])
   if test "x$GS_PATH" != "x" -a "x$PNMTOPNG_PATH" != "x" -a "x$PSSELECT_PATH" != "x"; then
      have_groff_html=yes
   else
      have_groff_html=no
      AC_MSG_WARN([grohtml dependencies not found - HTML Documentation skipped. Refer to grohtml man pages])
   fi
fi

# Set Automake conditionals for Makefiles
AM_CONDITIONAL([HAVE_GROFF], [test "$have_groff" = yes])
AM_CONDITIONAL([HAVE_GROFF_MS], [test "$groff_ms_works" = yes])
AM_CONDITIONAL([HAVE_GROFF_MM], [test "$groff_mm_works" = yes])
AM_CONDITIONAL([HAVE_GROFF_HTML], [test "$have_groff_html" = yes])
]) # XORG_WITH_GROFF

# XORG_WITH_FOP
# ----------------
# Minimum version: 1.6.0
#
# Documentation tools are not always available on all platforms and sometimes
# not at the appropriate level. This macro enables a module to test for the
# presence of the tool and obtain it's path in separate variables. Coupled with
# the --with-fop option, it allows maximum flexibilty in making decisions
# as whether or not to use the fop package.
#
# Interface to module:
# HAVE_FOP: 	used in makefiles to conditionally generate documentation
# FOP:	 	returns the path of the fop program found
#		returns the path set by the user in the environment
# --with-fop: 	'yes' user instructs the module to use fop
#		'no' user instructs the module not to use fop
#
# If the user sets the value of FOP, AC_PATH_PROG skips testing the path.
#
AC_DEFUN([XORG_WITH_FOP],[
AC_ARG_VAR([FOP], [Path to fop command])
AC_ARG_WITH(fop,
	AS_HELP_STRING([--with-fop],
	   [Use fop to regenerate documentation (default: yes, if installed)]),
	   [use_fop=$withval], [use_fop=auto])

if test "x$use_fop" = x"auto"; then
   AC_PATH_PROG([FOP], [fop])
   if test "x$FOP" = "x"; then
        AC_MSG_WARN([fop not found - documentation targets will be skipped])
	have_fop=no
   else
        have_fop=yes
   fi
elif test "x$use_fop" = x"yes" ; then
   AC_PATH_PROG([FOP], [fop])
   if test "x$FOP" = "x"; then
        AC_MSG_ERROR([--with-fop=yes specified but fop not found in PATH])
   fi
   have_fop=yes
elif test "x$use_fop" = x"no" ; then
   if test "x$FOP" != "x"; then
      AC_MSG_WARN([ignoring FOP environment variable since --with-fop=no was specified])
   fi
   have_fop=no
else
   AC_MSG_ERROR([--with-fop expects 'yes' or 'no'])
fi
AM_CONDITIONAL([HAVE_FOP], [test "$have_fop" = yes])
]) # XORG_WITH_FOP

# XORG_WITH_PS2PDF
# ----------------
# Minimum version: 1.6.0
#
# Documentation tools are not always available on all platforms and sometimes
# not at the appropriate level. This macro enables a module to test for the
# presence of the tool and obtain it's path in separate variables. Coupled with
# the --with-ps2pdf option, it allows maximum flexibilty in making decisions
# as whether or not to use the ps2pdf package.
#
# Interface to module:
# HAVE_PS2PDF: 	used in makefiles to conditionally generate documentation
# PS2PDF:	returns the path of the ps2pdf program found
#		returns the path set by the user in the environment
# --with-ps2pdf: 'yes' user instructs the module to use ps2pdf
#		 'no' user instructs the module not to use ps2pdf
#
# If the user sets the value of PS2PDF, AC_PATH_PROG skips testing the path.
#
AC_DEFUN([XORG_WITH_PS2PDF],[
AC_ARG_VAR([PS2PDF], [Path to ps2pdf command])
AC_ARG_WITH(ps2pdf,
	AS_HELP_STRING([--with-ps2pdf],
	   [Use ps2pdf to regenerate documentation (default: yes, if installed)]),
	   [use_ps2pdf=$withval], [use_ps2pdf=auto])

if test "x$use_ps2pdf" = x"auto"; then
   AC_PATH_PROG([PS2PDF], [ps2pdf])
   if test "x$PS2PDF" = "x"; then
        AC_MSG_WARN([ps2pdf not found - documentation targets will be skipped])
	have_ps2pdf=no
   else
        have_ps2pdf=yes
   fi
elif test "x$use_ps2pdf" = x"yes" ; then
   AC_PATH_PROG([PS2PDF], [ps2pdf])
   if test "x$PS2PDF" = "x"; then
        AC_MSG_ERROR([--with-ps2pdf=yes specified but ps2pdf not found in PATH])
   fi
   have_ps2pdf=yes
elif test "x$use_ps2pdf" = x"no" ; then
   if test "x$PS2PDF" != "x"; then
      AC_MSG_WARN([ignoring PS2PDF environment variable since --with-ps2pdf=no was specified])
   fi
   have_ps2pdf=no
else
   AC_MSG_ERROR([--with-ps2pdf expects 'yes' or 'no'])
fi
AM_CONDITIONAL([HAVE_PS2PDF], [test "$have_ps2pdf" = yes])
]) # XORG_WITH_PS2PDF

# XORG_ENABLE_DOCS (enable_docs=yes)
# ----------------
# Minimum version: 1.6.0
#
# Documentation tools are not always available on all platforms and sometimes
# not at the appropriate level. This macro enables a builder to skip all
# documentation targets except traditional man pages.
# Combined with the specific tool checking macros XORG_WITH_*, it provides
# maximum flexibilty in controlling documentation building.
# Refer to:
# XORG_WITH_XMLTO         --with-xmlto
# XORG_WITH_ASCIIDOC      --with-asciidoc
# XORG_WITH_DOXYGEN       --with-doxygen
# XORG_WITH_FOP           --with-fop
# XORG_WITH_GROFF         --with-groff
# XORG_WITH_PS2PDF        --with-ps2pdf
#
# Interface to module:
# ENABLE_DOCS: 	  used in makefiles to conditionally generate documentation
# --enable-docs: 'yes' user instructs the module to generate docs
#		 'no' user instructs the module not to generate docs
# parm1:	specify the default value, yes or no.
#
AC_DEFUN([XORG_ENABLE_DOCS],[
default=$1
if test "x$default" = x ; then
  default="yes"
fi
AC_ARG_ENABLE(docs,
	AS_HELP_STRING([--enable-docs],
	   [Enable building the documentation (default: yes)]),
	   [build_docs=$enableval], [build_docs=$default])
AM_CONDITIONAL(ENABLE_DOCS, [test x$build_docs = xyes])
AC_MSG_CHECKING([whether to build documentation])
AC_MSG_RESULT([$build_docs])
]) # XORG_ENABLE_DOCS

# XORG_ENABLE_DEVEL_DOCS (enable_devel_docs=yes)
# ----------------
# Minimum version: 1.6.0
#
# This macro enables a builder to skip all developer documentation.
# Combined with the specific tool checking macros XORG_WITH_*, it provides
# maximum flexibilty in controlling documentation building.
# Refer to:
# XORG_WITH_XMLTO         --with-xmlto
# XORG_WITH_ASCIIDOC      --with-asciidoc
# XORG_WITH_DOXYGEN       --with-doxygen
# XORG_WITH_FOP           --with-fop
# XORG_WITH_GROFF         --with-groff
# XORG_WITH_PS2PDF        --with-ps2pdf
#
# Interface to module:
# ENABLE_DEVEL_DOCS:	used in makefiles to conditionally generate developer docs
# --enable-devel-docs:	'yes' user instructs the module to generate developer docs
#			'no' user instructs the module not to generate developer docs
# parm1:		specify the default value, yes or no.
#
AC_DEFUN([XORG_ENABLE_DEVEL_DOCS],[
devel_default=$1
if test "x$devel_default" = x ; then
  devel_default="yes"
fi
AC_ARG_ENABLE(devel-docs,
	AS_HELP_STRING([--enable-devel-docs],
	   [Enable building the developer documentation (default: yes)]),
	   [build_devel_docs=$enableval], [build_devel_docs=$devel_default])
AM_CONDITIONAL(ENABLE_DEVEL_DOCS, [test x$build_devel_docs = xyes])
AC_MSG_CHECKING([whether to build developer documentation])
AC_MSG_RESULT([$build_devel_docs])
]) # XORG_ENABLE_DEVEL_DOCS

# XORG_ENABLE_SPECS (enable_specs=yes)
# ----------------
# Minimum version: 1.6.0
#
# This macro enables a builder to skip all functional specification targets.
# Combined with the specific tool checking macros XORG_WITH_*, it provides
# maximum flexibilty in controlling documentation building.
# Refer to:
# XORG_WITH_XMLTO         --with-xmlto
# XORG_WITH_ASCIIDOC      --with-asciidoc
# XORG_WITH_DOXYGEN       --with-doxygen
# XORG_WITH_FOP           --with-fop
# XORG_WITH_GROFF         --with-groff
# XORG_WITH_PS2PDF        --with-ps2pdf
#
# Interface to module:
# ENABLE_SPECS:		used in makefiles to conditionally generate specs
# --enable-specs:	'yes' user instructs the module to generate specs
#			'no' user instructs the module not to generate specs
# parm1:		specify the default value, yes or no.
#
AC_DEFUN([XORG_ENABLE_SPECS],[
spec_default=$1
if test "x$spec_default" = x ; then
  spec_default="yes"
fi
AC_ARG_ENABLE(specs,
	AS_HELP_STRING([--enable-specs],
	   [Enable building the specs (default: yes)]),
	   [build_specs=$enableval], [build_specs=$spec_default])
AM_CONDITIONAL(ENABLE_SPECS, [test x$build_specs = xyes])
AC_MSG_CHECKING([whether to build functional specifications])
AC_MSG_RESULT([$build_specs])
]) # XORG_ENABLE_SPECS

# XORG_CHECK_MALLOC_ZERO
# ----------------------
# Minimum version: 1.0.0
#
# 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,
	AS_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$MALLOC_ZERO_RETURNS_NULL" = xauto; then
	AC_RUN_IFELSE([
char *malloc();
char *realloc();
char *calloc();
main() {
    char *m0, *r0, *c0, *p;
    m0 = malloc(0);
    p = malloc(10);
    r0 = realloc(p,0);
    c0 = calloc(0);
    exit(m0 == 0 || r0 == 0 || c0 == 0 ? 0 : 1);
}],
		[MALLOC_ZERO_RETURNS_NULL=yes],
		[MALLOC_ZERO_RETURNS_NULL=no],
		[MALLOC_ZERO_RETURNS_NULL=yes])
fi
AC_MSG_RESULT([$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

# XORG_WITH_LINT()
# ----------------
# Minimum version: 1.1.0
#
# This macro enables the use of a tool that flags some suspicious and
# non-portable constructs (likely to be bugs) in C language source code.
# It will attempt to locate the tool and use appropriate options.
# There are various lint type tools on different platforms.
#
# Interface to module:
# LINT:		returns the path to the tool found on the platform
#		or the value set to LINT on the configure cmd line
#		also an Automake conditional
# LINT_FLAGS:	an Automake variable with appropriate flags
#
# --with-lint:	'yes' user instructs the module to use lint
#		'no' user instructs the module not to use lint (default)
#
# If the user sets the value of LINT, AC_PATH_PROG skips testing the path.
# If the user sets the value of LINT_FLAGS, they are used verbatim.
#
AC_DEFUN([XORG_WITH_LINT],[

AC_ARG_VAR([LINT], [Path to a lint-style command])
AC_ARG_VAR([LINT_FLAGS], [Flags for the lint-style command])
AC_ARG_WITH(lint, [AS_HELP_STRING([--with-lint],
		[Use a lint-style source code checker (default: disabled)])],
		[use_lint=$withval], [use_lint=no])

# Obtain platform specific info like program name and options
# The lint program on FreeBSD and NetBSD is different from the one on Solaris
case $host_os in
  *linux* | *openbsd* | kfreebsd*-gnu | darwin* | cygwin*)
	lint_name=splint
	lint_options="-badflag"
	;;
  *freebsd* | *netbsd*)
	lint_name=lint
	lint_options="-u -b"
	;;
  *solaris*)
	lint_name=lint
	lint_options="-u -b -h -erroff=E_INDISTING_FROM_TRUNC2"
	;;
esac

# Test for the presence of the program (either guessed by the code or spelled out by the user)
if test "x$use_lint" = x"yes" ; then
   AC_PATH_PROG([LINT], [$lint_name])
   if test "x$LINT" = "x"; then
        AC_MSG_ERROR([--with-lint=yes specified but lint-style tool not found in PATH])
   fi
elif test "x$use_lint" = x"no" ; then
   if test "x$LINT" != "x"; then
      AC_MSG_WARN([ignoring LINT environment variable since --with-lint=no was specified])
   fi
else
   AC_MSG_ERROR([--with-lint expects 'yes' or 'no'. Use LINT variable to specify path.])
fi

# User supplied flags override default flags
if test "x$LINT_FLAGS" != "x"; then
   lint_options=$LINT_FLAGS
fi

AC_SUBST([LINT_FLAGS],[$lint_options])
AM_CONDITIONAL(LINT, [test "x$LINT" != x])

]) # XORG_WITH_LINT

# XORG_LINT_LIBRARY(LIBNAME)
# --------------------------
# Minimum version: 1.1.0
#
# Sets up flags for building lint libraries for checking programs that call
# functions in the library.
#
# Interface to module:
# LINTLIB		- Automake variable with the name of lint library file to make
# MAKE_LINT_LIB		- Automake conditional
#
# --enable-lint-library:  - 'yes' user instructs the module to created a lint library
#			  - 'no' user instructs the module not to create a lint library (default)

AC_DEFUN([XORG_LINT_LIBRARY],[
AC_REQUIRE([XORG_WITH_LINT])
AC_ARG_ENABLE(lint-library, [AS_HELP_STRING([--enable-lint-library],
	[Create lint library (default: disabled)])],
	[make_lint_lib=$enableval], [make_lint_lib=no])

if test "x$make_lint_lib" = x"yes" ; then
   LINTLIB=llib-l$1.ln
   if test "x$LINT" = "x"; then
        AC_MSG_ERROR([Cannot make lint library without --with-lint])
   fi
elif test "x$make_lint_lib" != x"no" ; then
   AC_MSG_ERROR([--enable-lint-library expects 'yes' or 'no'.])
fi

AC_SUBST(LINTLIB)
AM_CONDITIONAL(MAKE_LINT_LIB, [test x$make_lint_lib != xno])

]) # XORG_LINT_LIBRARY

# XORG_CWARNFLAGS
# ---------------
# Minimum version: 1.2.0
#
# Defines CWARNFLAGS to enable C compiler warnings.
#
AC_DEFUN([XORG_CWARNFLAGS], [
AC_REQUIRE([AC_PROG_CC_C99])
if  test "x$GCC" = xyes ; then
    CWARNFLAGS="-Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes \
-Wmissing-declarations -Wnested-externs -fno-strict-aliasing \
-Wbad-function-cast -Wformat=2"
    case `$CC -dumpversion` in
    3.4.* | 4.*)
	CWARNFLAGS="$CWARNFLAGS -Wold-style-definition -Wdeclaration-after-statement"
	;;
    esac
else
    AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
    if test "x$SUNCC" = "xyes"; then
	CWARNFLAGS="-v"
    fi
fi
AC_SUBST(CWARNFLAGS)
]) # XORG_CWARNFLAGS

# XORG_STRICT_OPTION
# -----------------------
# Minimum version: 1.3.0
#
# Add configure option to enable strict compilation
AC_DEFUN([XORG_STRICT_OPTION], [
# If the module's configure.ac calls AC_PROG_CC later on, CC gets set to C89
AC_REQUIRE([AC_PROG_CC_C99])
AC_REQUIRE([XORG_CWARNFLAGS])

AC_ARG_ENABLE(strict-compilation,
			  AS_HELP_STRING([--enable-strict-compilation],
			  [Enable all warnings from compiler and make them errors (default: disabled)]),
			  [STRICT_COMPILE=$enableval], [STRICT_COMPILE=no])
if test "x$STRICT_COMPILE" = "xyes"; then
	AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
	AC_CHECK_DECL([__INTEL_COMPILER], [INTELCC="yes"], [INTELCC="no"])
	if test "x$GCC" = xyes ; then
		STRICT_CFLAGS="-pedantic -Werror"
	elif test "x$SUNCC" = "xyes"; then
		STRICT_CFLAGS="-errwarn"
    elif test "x$INTELCC" = "xyes"; then
		STRICT_CFLAGS="-Werror"
	fi
fi
CWARNFLAGS="$CWARNFLAGS $STRICT_CFLAGS"
AC_SUBST([CWARNFLAGS])
]) # XORG_STRICT_OPTION

# XORG_DEFAULT_OPTIONS
# --------------------
# Minimum version: 1.3.0
#
# Defines default options for X.Org modules.
#
AC_DEFUN([XORG_DEFAULT_OPTIONS], [
AC_REQUIRE([AC_PROG_INSTALL])
XORG_CWARNFLAGS
XORG_STRICT_OPTION
XORG_RELEASE_VERSION
XORG_CHANGELOG
XORG_INSTALL
XORG_MANPAGE_SECTIONS
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
    [AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])
]) # XORG_DEFAULT_OPTIONS

# XORG_INSTALL()
# ----------------
# Minimum version: 1.4.0
#
# Defines the variable INSTALL_CMD as the command to copy
# INSTALL from $prefix/share/util-macros.
#
AC_DEFUN([XORG_INSTALL], [
AC_REQUIRE([PKG_PROG_PKG_CONFIG])
macros_datadir=`$PKG_CONFIG --print-errors --variable=pkgdatadir xorg-macros`
INSTALL_CMD="(cp -f "$macros_datadir/INSTALL" \$(top_srcdir)/.INSTALL.tmp && \
mv \$(top_srcdir)/.INSTALL.tmp \$(top_srcdir)/INSTALL) \
|| (rm -f \$(top_srcdir)/.INSTALL.tmp; touch \$(top_srcdir)/INSTALL; \
echo 'util-macros \"pkgdatadir\" from xorg-macros.pc not found: installing possibly empty INSTALL.' >&2)"
AC_SUBST([INSTALL_CMD])
]) # XORG_INSTALL
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
# --------------------
# Defines PACKAGE_VERSION_{MAJOR,MINOR,PATCHLEVEL} for modules to use.
 
AC_DEFUN([XORG_RELEASE_VERSION],[
	AC_DEFINE_UNQUOTED([PACKAGE_VERSION_MAJOR],
		[`echo $PACKAGE_VERSION | cut -d . -f 1`],
		[Major version of this package])
	PVM=`echo $PACKAGE_VERSION | cut -d . -f 2 | cut -d - -f 1`
	if test "x$PVM" = "x"; then
		PVM="0"
	fi
	AC_DEFINE_UNQUOTED([PACKAGE_VERSION_MINOR],
		[$PVM],
		[Minor version of this package])
	PVP=`echo $PACKAGE_VERSION | cut -d . -f 3 | cut -d - -f 1`
	if test "x$PVP" = "x"; then
		PVP="0"
	fi
	AC_DEFINE_UNQUOTED([PACKAGE_VERSION_PATCHLEVEL],
		[$PVP],
		[Patch version of this package])
])

# XORG_CHANGELOG()
# ----------------
# Minimum version: 1.2.0
#
# Defines the variable CHANGELOG_CMD as the command to generate
# ChangeLog from git.
#
#
AC_DEFUN([XORG_CHANGELOG], [
CHANGELOG_CMD="(GIT_DIR=\$(top_srcdir)/.git git log > \$(top_srcdir)/.changelog.tmp && \
mv \$(top_srcdir)/.changelog.tmp \$(top_srcdir)/ChangeLog) \
|| (rm -f \$(top_srcdir)/.changelog.tmp; touch \$(top_srcdir)/ChangeLog; \
echo 'git directory not found: installing possibly empty changelog.' >&2)"
AC_SUBST([CHANGELOG_CMD])
]) # XORG_CHANGELOG

# 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 "$$1"; then
    pkg_cv_[]$1="$$1"
 elif test -n "$PKG_CONFIG"; then
    PKG_CHECK_EXISTS([$3],
                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
		     [pkg_failed=yes])
 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 --print-errors "$2" 2>&1`
        else 
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
        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
])],
		[AC_MSG_RESULT([no])
                $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://pkg-config.freedesktop.org/>.])],
		[$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