-# 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
-
-# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_cflags_gcc_option.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-# AX_CFLAGS_GCC_OPTION (optionflag [,[shellvar][,[A][,[NA]]])
-#
-# DESCRIPTION
-#
-# AX_CFLAGS_GCC_OPTION(-fvomit-frame) would show a message as like
-# "checking CFLAGS for gcc -fvomit-frame ... yes" and adds the optionflag
-# to CFLAGS if it is understood. You can override the shellvar-default of
-# CFLAGS of course. The order of arguments stems from the explicit macros
-# like AX_CFLAGS_WARN_ALL.
-#
-# The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add to
-# CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it
-# is possible to use different compilers for C and C++).
-#
-# The macro is a lot simpler than any special AX_CFLAGS_* macro (or
-# ax_cxx_rtti.m4 macro) but allows to check for arbitrary options.
-# However, if you use this macro in a few places, it would be great if you
-# would make up a new function-macro and submit it to the ac-archive.
-#
-# - $1 option-to-check-for : required ("-option" as non-value)
-# - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
-# - $3 action-if-found : add value to shellvariable
-# - $4 action-if-not-found : nothing
-#
-# Note: in earlier versions, $1-$2 were swapped. We try to detect the
-# situation and accept a $2=~/-/ as being the old option-to-check-for.
-#
-# There are other variants that emerged from the original macro variant
-# which did just test an option to be possibly added. However, some
-# compilers accept an option silently, or possibly for just another option
-# that was not intended. Therefore, we have to do a generic test for a
-# compiler family. For gcc we check "-pedantic" being accepted which is
-# also understood by compilers who just want to be compatible with gcc
-# even when not being made from gcc sources.
-#
-# See also: AX_CFLAGS_SUN_OPTION, AX_CFLAGS_HPUX_OPTION,
-# AX_CFLAGS_AIX_OPTION, and AX_CFLAGS_IRIX_OPTION.
-#
-# LICENSE
-#
-# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
-#
-# 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, see <http://www.gnu.org/licenses/>.
-#
-# As a special exception, the respective Autoconf Macro's copyright owner
-# gives unlimited permission to copy, distribute and modify the configure
-# scripts that are the output of Autoconf when processing the Macro. You
-# need not follow the terms of the GNU General Public License when using
-# or distributing such scripts, even though portions of the text of the
-# Macro appear in them. The GNU General Public License (GPL) does govern
-# all other use of the material that constitutes the Autoconf Macro.
-#
-# This special exception to the GPL applies to versions of the Autoconf
-# Macro released by the Autoconf Archive. When you make and distribute a
-# modified version of the Autoconf Macro, you may extend this special
-# exception to the GPL to apply to your modified version as well.
-
-AC_DEFUN([AX_CFLAGS_GCC_OPTION_OLD], [dnl
-AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$2])dnl
-AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
-VAR,[VAR="no, unknown"
- AC_LANG_SAVE
- AC_LANG_C
- ac_save_[]FLAGS="$[]FLAGS"
-for ac_arg dnl
-in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
- "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
- #
-do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
- AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
-done
- FLAGS="$ac_save_[]FLAGS"
- AC_LANG_RESTORE
-])
-case ".$VAR" in
- .ok|.ok,*) m4_ifvaln($3,$3) ;;
- .|.no|.no,*) m4_ifvaln($4,$4) ;;
- *) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
- fi ]) ;;
-esac
-AS_VAR_POPDEF([VAR])dnl
-AS_VAR_POPDEF([FLAGS])dnl
-])
-
-
-dnl the only difference - the LANG selection... and the default FLAGS
-
-AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_OLD], [dnl
-AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$2])dnl
-AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
-VAR,[VAR="no, unknown"
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- ac_save_[]FLAGS="$[]FLAGS"
-for ac_arg dnl
-in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
- "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
- #
-do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
- AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
-done
- FLAGS="$ac_save_[]FLAGS"
- AC_LANG_RESTORE
-])
-case ".$VAR" in
- .ok|.ok,*) m4_ifvaln($3,$3) ;;
- .|.no|.no,*) m4_ifvaln($4,$4) ;;
- *) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
- m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
- fi ]) ;;
-esac
-AS_VAR_POPDEF([VAR])dnl
-AS_VAR_POPDEF([FLAGS])dnl
-])
-
-dnl -------------------------------------------------------------------------
-
-AC_DEFUN([AX_CFLAGS_GCC_OPTION_NEW], [dnl
-AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ax_cv_cflags_gcc_option_$1])dnl
-AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
-VAR,[VAR="no, unknown"
- AC_LANG_SAVE
- AC_LANG_C
- ac_save_[]FLAGS="$[]FLAGS"
-for ac_arg dnl
-in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
- "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
- #
-do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
- AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
-done
- FLAGS="$ac_save_[]FLAGS"
- AC_LANG_RESTORE
-])
-case ".$VAR" in
- .ok|.ok,*) m4_ifvaln($3,$3) ;;
- .|.no|.no,*) m4_ifvaln($4,$4) ;;
- *) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
- m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
- fi ]) ;;
-esac
-AS_VAR_POPDEF([VAR])dnl
-AS_VAR_POPDEF([FLAGS])dnl
-])
-
-
-dnl the only difference - the LANG selection... and the default FLAGS
-
-AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_NEW], [dnl
-AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
-AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_gcc_option_$1])dnl
-AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
-VAR,[VAR="no, unknown"
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- ac_save_[]FLAGS="$[]FLAGS"
-for ac_arg dnl
-in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
- "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
- #
-do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
- AC_TRY_COMPILE([],[return 0;],
- [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
-done
- FLAGS="$ac_save_[]FLAGS"
- AC_LANG_RESTORE
-])
-case ".$VAR" in
- .ok|.ok,*) m4_ifvaln($3,$3) ;;
- .|.no|.no,*) m4_ifvaln($4,$4) ;;
- *) m4_ifvaln($3,$3,[
- if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
- then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
- else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
- m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
- fi ]) ;;
-esac
-AS_VAR_POPDEF([VAR])dnl
-AS_VAR_POPDEF([FLAGS])dnl
-])
-
-AC_DEFUN([AX_CFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
-[AX_CFLAGS_GCC_OPTION_NEW($@)],[AX_CFLAGS_GCC_OPTION_OLD($@)])])
-
-AC_DEFUN([AX_CXXFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
-[AX_CXXFLAGS_GCC_OPTION_NEW($@)],[AX_CXXFLAGS_GCC_OPTION_OLD($@)])])