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acinclude.m4
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acinclude.m4
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# checkbuild.m4 -*- Autoconf -*-
#==============================================================================
# Copyright (C)2003 by Eric Sunshine <[email protected]>
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This library 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 Library General Public
# License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#==============================================================================
AC_PREREQ([2.56])
#------------------------------------------------------------------------------
# CS_SPLIT_TUPLE(TUPLE, OUTPUT-VARIABLES)
# Split a build-tuple into its component parts. A build tuple is
# constructed by CS_CREATE_TUPLE() and is comprised of compiler flags,
# linker flags, and library references. OUTPUT-VARIABLES is a
# comma-delimited list of shell variables which should receive the
# extracted compiler flags, linker flags, and library references,
# respectively.
#------------------------------------------------------------------------------
AC_DEFUN([CS_SPLIT_TUPLE],
[CS_SPLIT([$1], [cs_dummy,$2], [@])
m4_map([_CS_SPLIT_TUPLE], [$2])])
AC_DEFUN([_CS_SPLIT_TUPLE],
[$1=`echo $$1 | sed 'y%@%:@% %'`
])
#------------------------------------------------------------------------------
# CS_CREATE_TUPLE([CFLAGS], [LFLAGS], [LIBS])
# Construct a build-tuple which is comprised of compiler flags, linker
# flags, and library references. Build tuples are encoded so as to
# preserve whitespace in each component. This makes it possible for
# macros (such as CS_BUILD_IFELSE) which employ build tuples to accept
# whitespace-delimited lists of tuples, and for shell "for" statements to
# iterate over tuple lists without compromising whitespace embedded
# within individual flags or library references.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CREATE_TUPLE], [`echo @$1@$2@$3 | sed 'y% %@%:@%'`])
#------------------------------------------------------------------------------
# CS_LANG_CFLAGS
# Return the literal string CFLAGS if the current language is C. Return
# the literal string CXXFLAGS if the current language is C++. Generic
# compiler test macros which need to modify or save the compiler flags
# can invoke this macro to get the name of the compiler flags environment
# variable (either CFLAGS or CXXFLAGS) depending upon the current
# language. For example:
# CS_LANG_CFLAGS="$CS_LANG_CFLAGS -Wall"
# With C, this expands to:
# CFLAGS="$CFLAGS -Wall"
# With C++, it expands to:
# CXXFLAGS="$CXXFLAGS -Wall"
#------------------------------------------------------------------------------
AC_DEFUN([CS_LANG_CFLAGS], [AC_LANG_CASE([C], [CFLAGS], [C++], [CXXFLAGS])])
#------------------------------------------------------------------------------
# CS_BUILD_IFELSE([PROGRAM], [FLAGS], [LANGUAGE], [ACTION-IF-BUILT],
# [ACTION-IF-NOT-BUILT], [OTHER-CFLAGS], [OTHER-LFLAGS],
# [OTHER-LIBS], [INHIBIT-OTHER-FLAGS], [ERROR-REGEX])
# Try building a program using the supplied compiler flags, linker flags,
# and library references. PROGRAM is typically a program composed via
# AC_LANG_PROGRAM(). PROGRAM may be omitted if you are interested only
# in learning if the compiler or linker respects certain flags. LANGUAGE
# is typically either C or C++ and specifies which compiler to use for
# the test. If LANGUAGE is omitted, C is used. FLAGS is a whitespace
# delimited list of build tuples. Tuples are created with
# CS_CREATE_TUPLE() and are composed of up to three elements each. The
# first element represents compiler flags, the second linker flags, and
# the third libraries used when linking the program. Each tuple from
# FLAGS is attempted in order. If you want a build attempted with no
# special flags prior to builds with specialized flags, create an empty
# tuple with CS_CREATE_TUPLE() at the start of the FLAGS list. If the
# build is successful, then the shell variables cs_build_ok is set to
# "yes", cs_build_cflags, cs_build_lflags, and cs_build_libs are set to
# the tuple elements which resulted in the successful build, and
# ACTION-IF-BUILT is invoked. Upon successful build, no further tuples
# are consulted. If no tuple results in a successful build, then
# cs_build_ok is set to "no" and ACTION-IF-NOT-BUILT is invoked.
# OTHER-CFLAGS, OTHER-LFLAGS, and OTHER-LIBS specify additional compiler
# flags, linker flags, and libraries which should be used with each tuple
# build attempt. Upon successful build, these additional flags are also
# reflected in the variables cs_build_cflags, cs_build_lflags, and
# cs_build_libs unless INHIBIT-OTHER-FLAGS is a non-empty string. The
# optional ERROR-REGEX places an additional constraint upon the build
# check. If specified, ERROR-REGEX, which is a standard `grep' regular
# expression, is applied to output captured from the compiler and linker.
# If ERROR-REGEX matches, then the build is deemed a failure, and
# cs_build_ok is set to "no". This facility is useful for broken build
# tools which emit an error message yet still return success as a result.
# In such cases, it should be possible to detect the failure by scanning
# the tools' output.
#
# IMPLEMENTATION NOTES
#
# In Autoconf 2.57 and earlier, AC_LINK_IFELSE() invokes AC_TRY_EVAL(),
# which does not provide access to the captured output. To work around
# this limitation, we temporarily re-define AC_TRY_EVAL() as
# _AC_EVAL_STDERR(), which leaves the captured output in conftest.err
# (which we must also delete). In Autoconf 2.58, however,
# AC_LINK_IFELSE() instead already invokes _AC_EVAL_STDERR() on our
# behalf, however we must be careful to apply ERROR-REGEX within the
# invocation AC_LINK_IFELSE(), since AC_LINK_IFELSE() deletes
# conftest.err before it returns.
#------------------------------------------------------------------------------
AC_DEFUN([CS_BUILD_IFELSE],
[AC_LANG_PUSH(m4_default([$3],[C]))
cs_cflags_save="$CS_LANG_CFLAGS"
cs_lflags_save="$LDFLAGS"
cs_libs_save="$LIBS"
cs_build_ok=no
m4_ifval([$10], [m4_pushdef([AC_TRY_EVAL], [_AC_EVAL_STDERR]($$[1]))])
for cs_build_item in m4_default([$2],[CS_CREATE_TUPLE()])
do
CS_SPLIT_TUPLE(
[$cs_build_item],[cs_cflags_test,cs_lflags_test,cs_libs_test])
CS_LANG_CFLAGS="$cs_cflags_test $6 $cs_cflags_save"
LDFLAGS="$cs_lflags_test $7 $cs_lflags_save"
LIBS="$cs_libs_test $8 $cs_libs_save"
AC_LINK_IFELSE(m4_default([$1], [AC_LANG_PROGRAM([],[])]),
[m4_ifval([$10],
[AS_IF([AC_TRY_COMMAND(
[grep "AS_ESCAPE([$10])" conftest.err >/dev/null 2>&1])],
[cs_build_ok=no], [cs_build_ok=yes])],
[cs_build_ok=yes])])
AS_IF([test $cs_build_ok = yes], [break])
done
m4_ifval([$10], [m4_popdef([AC_TRY_EVAL]) rm -f conftest.err])
CS_LANG_CFLAGS=$cs_cflags_save
LDFLAGS=$cs_lflags_save
LIBS=$cs_libs_save
AC_LANG_POP(m4_default([$3],[C]))
AS_IF([test $cs_build_ok = yes],
[cs_build_cflags=CS_TRIM([$cs_cflags_test[]m4_ifval([$9],[],[ $6])])
cs_build_lflags=CS_TRIM([$cs_lflags_test[]m4_ifval([$9],[],[ $7])])
cs_build_libs=CS_TRIM([$cs_libs_test[]m4_ifval([$9],[],[ $8])])
$4],
[$5])])
#------------------------------------------------------------------------------
# CS_CHECK_BUILD(MESSAGE, CACHE-VAR, [PROGRAM], [FLAGS], [LANGUAGE],
# [ACTION-IF-BUILT], [ACTION-IF-NOT-BUILT], [IGNORE-CACHE],
# [OTHER-CFLAGS], [OTHER-LFLAGS], [OTHER-LIBS],
# [INHIBIT-OTHER-FLAGS], [ERROR-REGEX])
# Like CS_BUILD_IFELSE() but also prints "checking" and result messages,
# and optionally respects the cache. Sets CACHE-VAR to "yes" upon
# success, else "no" upon failure. Additionally, sets CACHE-VAR_cflags,
# CACHE-VAR_lflags, and CACHE-VAR_libs to the values which resulted in a
# successful build. If IGNORE-CACHE is "yes", then the cache variables
# are ignored upon entry to this macro, however they are still set to
# appropriate values upon exit.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_BUILD],
[AS_IF([test "$8" != yes],
[AC_CACHE_CHECK([$1], [$2],
[CS_BUILD_IFELSE([$3], [$4], [$5],
[$2=yes
$2_cflags=$cs_build_cflags
$2_lflags=$cs_build_lflags
$2_libs=$cs_build_libs],
[$2=no], [$9], [$10], [$11], [$12], [$13])])],
[AC_MSG_CHECKING([$1])
CS_BUILD_IFELSE([$3], [$4], [$5],
[$2=yes
$2_cflags=$cs_build_cflags
$2_lflags=$cs_build_lflags
$2_libs=$cs_build_libs],
[$2=no], [$9], [$10], [$11], [$12], [$13])
AC_MSG_RESULT([$$2])])
AS_IF([test $$2 = yes], [$6],
[$2_cflags=''
$2_lflags=''
$2_libs=''
$7])])
#------------------------------------------------------------------------------
# CS_CHECK_BUILD_FLAGS(MESSAGE, CACHE-VAR, FLAGS, [LANGUAGE],
# [ACTION-IF-RECOGNIZED], [ACTION-IF-NOT-RECOGNIZED],
# [OTHER-CFLAGS], [OTHER-LFLAGS], [OTHER-LIBS],
# [ERROR-REGEX])
# Like CS_CHECK_BUILD(), but checks only if the compiler or linker
# recognizes a command-line option or options. MESSAGE is the "checking"
# message. CACHE-VAR is the shell cache variable which receives the flag
# or flags recognized by the compiler or linker. FLAGS is a
# whitespace-delimited list of build tuples created with
# CS_CREATE_TUPLE(). Each tuple from FLAGS is attempted in order until
# one is found which is recognized by the compiler. After that, no
# further flags are checked. LANGUAGE is typically either C or C++ and
# specifies which compiler to use for the test. If LANGUAGE is omitted,
# C is used. If a command-line option is recognized, then CACHE-VAR is
# set to the composite value of $cs_build_cflags, $cs_build_lflags, and
# $cs_build_libs of the FLAGS element which succeeded (not including the
# "other" flags) and ACTION-IF-RECOGNIZED is invoked. If no options are
# recognized, then CACHE-VAR is set to the empty string, and
# ACTION-IF-NOT-RECOGNIZED is invoked. As a convenience, in case
# comparing CACHE-VAR against the empty string to test for failure is
# undesirable, a second variable named CACHE-VAR_ok is set to the literal
# "no" upon failure, and to the same value as CACHE-VAR upon success.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_BUILD_FLAGS],
[AC_CACHE_CHECK([$1], [$2_ok],
[CS_BUILD_IFELSE([], [$3], [$4],
[$2=CS_TRIM([$cs_build_cflags $cs_build_lflags $cs_build_libs])
$2_ok="$$2"],
[$2=''
$2_ok=no], [$7], [$8], [$9], [Y], [$10])])
AS_IF([test "$$2_ok" != no], [$5], [$6])])
#==============================================================================
# Copyright (C)2003-2006 by Eric Sunshine <[email protected]>
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This library is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
# License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#==============================================================================
AC_PREREQ([2.56])
#------------------------------------------------------------------------------
# CS_CHECK_COMMON_TOOLS_LINK
# Checks for common tools related to linking.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_COMMON_TOOLS_LINK],
[
# The default RANLIB in Jambase is wrong on some platforms, and is also
# unsuitable during cross-compilation, so we set the value unconditionally
# (sixth argument of CS_EMIT_BUILD_PROPERTY).
AC_PROG_RANLIB
CS_EMIT_BUILD_PROPERTY([RANLIB], [$RANLIB], [], [], [], [Y])
CS_CHECK_TOOLS([DLLTOOL], [dlltool])
CS_EMIT_BUILD_PROPERTY([CMD.DLLTOOL], [$DLLTOOL])
CS_CHECK_TOOLS([DLLWRAP], [dllwrap])
CS_EMIT_BUILD_PROPERTY([CMD.DLLWRAP], [$DLLWRAP])
CS_CHECK_TOOLS([WINDRES], [windres])
CS_EMIT_BUILD_PROPERTY([CMD.WINDRES], [$WINDRES])
CS_CHECK_TOOLS([STRINGS], [strings])
CS_EMIT_BUILD_PROPERTY([CMD.STRINGS], [$STRINGS])
CS_CHECK_TOOLS([OBJCOPY], [objcopy])
CS_EMIT_BUILD_PROPERTY([CMD.OBJCOPY], [$OBJCOPY])
CS_CHECK_LIBTOOL
CS_EMIT_BUILD_PROPERTY([LIBTOOL], [$LIBTOOL])
CS_EMIT_BUILD_PROPERTY([APPLE_LIBTOOL], [$APPLE_LIBTOOL])
])
#------------------------------------------------------------------------------
# CS_CHECK_COMMON_TOOLS_BASIC
# Checks for basic tools for building things.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_COMMON_TOOLS_BASIC],
[CS_CHECK_MKDIR
CS_EMIT_BUILD_PROPERTY([CMD.MKDIR], [$MKDIR])
CS_EMIT_BUILD_PROPERTY([CMD.MKDIRS], [$MKDIRS])
CS_CHECK_PROGS([INSTALL], [install])
CS_EMIT_BUILD_PROPERTY([INSTALL], [$INSTALL])])
#------------------------------------------------------------------------------
# CS_CHECK_COMMON_TOOLS_DOC_TEXINFO
# Checks for tools to generate documentation from texinfo files.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_COMMON_TOOLS_DOC_TEXINFO],
[CS_CHECK_PROGS([TEXI2DVI], [texi2dvi])
CS_EMIT_BUILD_PROPERTY([CMD.TEXI2DVI], [$TEXI2DVI])
CS_CHECK_PROGS([TEXI2PDF], [texi2pdf])
CS_EMIT_BUILD_PROPERTY([CMD.TEXI2PDF], [$TEXI2PDF])
CS_CHECK_PROGS([DVIPS], [dvips])
CS_EMIT_BUILD_PROPERTY([CMD.DVIPS], [$DVIPS])
CS_CHECK_PROGS([DVIPDF], [dvipdf])
CS_EMIT_BUILD_PROPERTY([CMD.DVIPDF], [$DVIPDF])
CS_CHECK_PROGS([MAKEINFO], [makeinfo])
CS_EMIT_BUILD_PROPERTY([CMD.MAKEINFO], [$MAKEINFO])])
#------------------------------------------------------------------------------
# CS_CHECK_COMMON_TOOLS_DOC_DOXYGEN
# Checks for tools to generate source documentation via doxygen.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_COMMON_TOOLS_DOC_DOXYGEN],
[CS_CHECK_PROGS([DOXYGEN], [doxygen])
CS_EMIT_BUILD_PROPERTY([CMD.DOXYGEN], [$DOXYGEN])
CS_CHECK_TOOLS([DOT], [dot])
CS_EMIT_BUILD_PROPERTY([CMD.DOT], [$DOT])])
#------------------------------------------------------------------------------
# CS_CHECK_COMMON_LIBS
# Check for typical required libraries (libm, libmx, libdl, libnsl).
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_COMMON_LIBS],
[AC_LANG_PUSH([C])
AC_CHECK_LIB([m], [pow], [cs_cv_libm_libs=-lm], [cs_cv_libm_libs=])
AC_CHECK_LIB([m], [cosf], [cs_cv_libm_libs=-lm])
AC_CHECK_LIB([mx], [cosf])
AC_CHECK_LIB([dl], [dlopen], [cs_cv_libdl_libs=-ldl], [cs_cv_libdl_libs=])
AC_CHECK_LIB([nsl], [gethostbyname])
AC_LANG_POP([C])])
# checkcppunit.m4 -*- Autoconf -*-
#==============================================================================
# Copyright (C)2005 by Eric Sunshine <[email protected]>
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This library 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 Library General Public
# License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#==============================================================================
AC_PREREQ([2.56])
#------------------------------------------------------------------------------
# CS_CHECK_CPPUNIT([EMITTER])
# Check if CppUnit (http://cppunit.sourceforge.net/), the unit-testing
# framework is available. The shell variable cs_cv_libcppunit is set to
# "yes" if CppUnit is discovered, else "no". If available, then the
# variables cs_cv_libcppunit_cflags, cs_cv_libcppunit_lflags, and
# cs_cv_libcppunit_libs are set. If EMITTER is provided, then
# CS_EMIT_BUILD_RESULT() is invoked with EMITTER in order to record the
# results in an output file. As a convenience, if EMITTER is the literal
# value "emit" or "yes", then CS_EMIT_BUILD_RESULT()'s default emitter
# will be used.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_CPPUNIT],
[CS_CHECK_LIB_WITH([cppunit],
[AC_LANG_PROGRAM([[#include <cppunit/ui/text/TestRunner.h>]],
[CppUnit::TextUi::TestRunner r; r.run();])],
[], [C++])
AS_IF([test $cs_cv_libcppunit = yes],
[CS_CHECK_BUILD([if cppunit is sufficiently recent],
[cs_cv_libcppunit_recent],
[AC_LANG_PROGRAM(
[[#include <cppunit/BriefTestProgressListener.h>]],
[CppUnit::BriefTestProgressListener b; b.startTest(0);])],
[], [C++],
[CS_EMIT_BUILD_RESULT([cs_cv_libcppunit], [CPPUNIT],
CS_EMITTER_OPTIONAL([$1]))], [], [],
[$cs_cv_libcppunit_cflags],
[$cs_cv_libcppunit_lflags],
[$cs_cv_libcppunit_libs])])])
# checklib.m4 -*- Autoconf -*-
#==============================================================================
# Copyright (C)2003-2005 by Eric Sunshine <[email protected]>
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This library 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 Library General Public
# License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#==============================================================================
AC_PREREQ([2.56])
#------------------------------------------------------------------------------
# cs_lib_paths_default
# Whitespace delimited list of directory tuples in which to search, by
# default, for external libraries. Each list item can specify an
# include|library directory tuple (for example, "/usr/include|/usr/lib"),
# or a single directory (for example, "/usr"). If the second form is
# used, then "include" and "lib" subdirectories of the directory are
# searched. If the library resources are not found, then the directory
# itself is searched. Thus, "/proj" is shorthand for
# "/proj/include|/proj/lib /proj|/proj".
#
# Present Cases:
# /usr/local -- Not all compilers search here by default, so we specify
# it manually.
# /sw -- Fink, the MacOS/X manager of Unix packages, installs here by
# default.
# /opt/local -- DarwinPorts installs here by default.
#------------------------------------------------------------------------------
m4_define([cs_lib_paths_default],
[/usr/local/include|/usr/local/lib \
/sw/include|/sw/lib \
/opt/local/include|/opt/local/lib \
/opt/include|/opt/lib])
#------------------------------------------------------------------------------
# cs_pkg_paths_default
# Comma delimited list of additional directories in which the
# `pkg-config' command should search for its `.pc' files.
#
# Present Cases:
# /usr/local/lib/pkgconfig -- Although a common location for .pc files
# installed by "make install", many `pkg-config' commands neglect
# to search here automatically.
# /sw/lib/pkgconfig -- Fink, the MacOS/X manager of Unix packages,
# installs .pc files here by default.
# /opt/local/lib/pkgconfig -- DarwinPorts installs .pc files here by
# default.
#------------------------------------------------------------------------------
m4_define([cs_pkg_paths_default],
[/usr/local/lib/pkgconfig,
/sw/lib/pkgconfig,
/opt/local/lib/pkgconfig,
/opt/lib/pkgconfig])
#------------------------------------------------------------------------------
# CS_CHECK_LIB_WITH(LIBRARY, PROGRAM, [SEARCH-LIST], [LANGUAGE],
# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND], [OTHER-CFLAGS],
# [OTHER-LFLAGS], [OTHER-LIBS], [ALIASES])
# Very roughly similar in concept to AC_CHECK_LIB(), but allows caller to
# to provide list of directories in which to search for LIBRARY; allows
# user to override library location via --with-LIBRARY=dir; and consults
# `pkg-config' (if present) and `LIBRARY-config' (if present, i.e.
# `sdl-config') in order to obtain compiler and linker flags. LIBRARY is
# the name of the library or MacOS/X framework which is to be located
# (for example, "readline" for `libreadline.a' or `readline.framework').
# PROGRAM, which is typically composed with AC_LANG_PROGRAM(), is a
# program which references at least one function or symbol in LIBRARY.
# SEARCH-LIST is a whitespace-delimited list of paths in which to search
# for the library and its header files, in addition to those searched by
# the compiler and linker by default, and those referenced by the
# cs_lib_paths_default macro. Each list item can specify an
# `include|library' directory tuple (for example,
# "/usr/include|/usr/lib"), or a single directory (for example, "/usr").
# If the second form is used, then "include" and "lib" subdirectories of
# the directory are searched. If the library resources are not found,
# then the directory itself is searched. Thus, "/proj" is shorthand for
# "/proj/include|/proj/lib /proj|/proj". Items in the search list can
# include wildcards. SEARCH-LIST can be overridden by the user with the
# --with-LIBRARY=dir option, in which case only "dir/include|dir/lib" and
# "dir|dir" are searched. If SEARCH-LIST is omitted and the user did not
# override the search list via --with-LIBRARY=dir, then only the
# directories normally searched by the compiler and the directories
# mentioned via cs_lib_paths_default are searched. LANGUAGE is typically
# either C or C++ and specifies which compiler to use for the test. If
# LANGUAGE is omitted, C is used. OTHER-CFLAGS, OTHER-LFLAGS, and
# OTHER-LIBS can specify additional compiler flags, linker flags, and
# libraries needed to successfully link with LIBRARY. The optional
# ALIASES is a comma-delimited list of library names for which to search
# in case LIBRARY is not located (for example "[sdl1.2, sdl12]" for
# libsdl1.2.a, sdl1.2.framework, libsdl12.a, and sdl12.framework). If
# the library or one of its aliases is found and can be successfully
# linked into a program, then the shell cache variable cs_cv_libLIBRARY
# is set to "yes"; cs_cv_libLIBRARY_cflags, cs_cv_libLIBRARY_lflags, and
# cs_cv_libLIBRARY_libs are set, respectively, to the compiler flags
# (including OTHER-CFLAGS), linker flags (including OTHER-LFLAGS), and
# library references (including OTHER-LIBS) which resulted in a
# successful build; and ACTION-IF-FOUND is invoked. If the library was
# not found or was unlinkable, or if the user disabled the library via
# --without-LIBRARY, then cs_cv_libLIBRARY is set to "no" and
# ACTION-IF-NOT-FOUND is invoked. Note that the exported shell variable
# names are always composed from LIBRARY regardless of whether the test
# succeeded because the primary library was discovered or one of the
# aliases.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_LIB_WITH],
[AC_ARG_WITH([$1], [AC_HELP_STRING([--with-$1=dir],
[specify location of lib$1 if not detected automatically; searches
dir/include, dir/lib, and dir])])
# Backward compatibility: Recognize --with-lib$1 as alias for --with-$1.
AS_IF([test -n "$with_lib$1" && test -z "$with_$1"],
[with_$1="$with_lib$1"])
AS_IF([test -z "$with_$1"], [with_$1=yes])
AS_IF([test "$with_$1" != no],
[# If --with-$1 value is same as cached value, then assume other
# cached values are also valid; otherwise, ignore all cached values.
AS_IF([test "$with_$1" != "$cs_cv_with_$1"],
[cs_ignore_cache=yes], [cs_ignore_cache=no])
cs_check_lib_flags=''
AS_IF([test $with_$1 = yes],
[m4_foreach([cs_check_lib_alias], [$1, $10],
[_CS_CHECK_LIB_PKG_CONFIG_FLAGS([cs_check_lib_flags],
cs_check_lib_alias)
_CS_CHECK_LIB_CONFIG_FLAGS([cs_check_lib_flags],
cs_check_lib_alias)
])])
AS_IF([test $with_$1 != yes],
[cs_check_lib_paths=$with_$1],
[cs_check_lib_paths="| cs_lib_paths_default $3"])
m4_foreach([cs_check_lib_alias], [$1, $10],
[_CS_CHECK_LIB_CREATE_FLAGS([cs_check_lib_flags],
cs_check_lib_alias, [$cs_check_lib_paths])
])
CS_CHECK_BUILD([for lib$1], [cs_cv_lib$1], [$2], [$cs_check_lib_flags],
[$4], [], [], [$cs_ignore_cache], [$7], [$8], [$9])],
[cs_cv_lib$1=no])
cs_cv_with_$1="$with_$1"
AS_IF([test "$cs_cv_lib$1" = yes], [$5], [$6])])
#------------------------------------------------------------------------------
# CS_CHECK_PKG_CONFIG
# Check if the `pkg-config' command is available and reasonably recent.
# This program acts as a central repository of build flags for various
# packages. For example, to determine the compiler flags for FreeType2
# use, "pkg-config --cflags freetype2"; and "pkg-config --libs freetype2"
# to determine the linker flags. If `pkg-config' is found and is
# sufficiently recent, PKG_CONFIG is set and AC_SUBST() invoked.
#------------------------------------------------------------------------------
m4_define([CS_PKG_CONFIG_MIN], [0.9.0])
AC_DEFUN([CS_CHECK_PKG_CONFIG],
[AS_IF([test "$cs_prog_pkg_config_checked" != yes],
[CS_CHECK_TOOLS([PKG_CONFIG], [pkg-config])
_CS_CHECK_PKG_CONFIG_PREPARE_PATH
cs_prog_pkg_config_checked=yes])
AS_IF([test -z "$cs_cv_prog_pkg_config_ok"],
[AS_IF([test -n "$PKG_CONFIG"],
[AS_IF([$PKG_CONFIG --atleast-pkgconfig-version=CS_PKG_CONFIG_MIN],
[cs_cv_prog_pkg_config_ok=yes],
[cs_cv_prog_pkg_config_ok=no])],
[cs_cv_prog_pkg_config_ok=no])])])
AC_DEFUN([_CS_CHECK_PKG_CONFIG_PREPARE_PATH],
[PKG_CONFIG_PATH="m4_foreach([cs_pkg_path], [cs_pkg_paths_default],
[cs_pkg_path$PATH_SEPARATOR])$PKG_CONFIG_PATH"
export PKG_CONFIG_PATH])
#------------------------------------------------------------------------------
# _CS_CHECK_LIB_PKG_CONFIG_FLAGS(VARIABLE, LIBRARY)
# Helper macro for CS_CHECK_LIB_WITH(). Checks if `pkg-config' knows
# about LIBRARY and, if so, appends a build tuple consisting of the
# compiler and linker flags reported by `pkg-config' to the list of
# tuples stored in the shell variable VARIABLE.
#------------------------------------------------------------------------------
AC_DEFUN([_CS_CHECK_LIB_PKG_CONFIG_FLAGS],
[CS_CHECK_PKG_CONFIG
AS_IF([test $cs_cv_prog_pkg_config_ok = yes],
[AC_CACHE_CHECK([if $PKG_CONFIG recognizes $2], [_CS_CLPCF_CVAR([$2])],
[AS_IF([$PKG_CONFIG --exists $2],
[_CS_CLPCF_CVAR([$2])=yes], [_CS_CLPCF_CVAR([$2])=no])])
AS_IF([test $_CS_CLPCF_CVAR([$2]) = yes],
[_CS_CHECK_LIB_CONFIG_PROG_FLAGS([$1], [pkg_config_$2],
[$PKG_CONFIG], [$2])])])])
AC_DEFUN([_CS_CLPCF_CVAR], [AS_TR_SH([cs_cv_prog_pkg_config_$1])])
#------------------------------------------------------------------------------
# _CS_CHECK_LIB_CONFIG_FLAGS(VARIABLE, LIBRARY)
# Helper macro for CS_CHECK_LIB_WITH(). Checks if `LIBRARY-config'
# (i.e. `sdl-config') exists and, if so, appends a build tuple consisting
# of the compiler and linker flags reported by `LIBRARY-config' to the
# list of tuples stored in the shell variable VARIABLE.
#------------------------------------------------------------------------------
AC_DEFUN([_CS_CHECK_LIB_CONFIG_FLAGS],
[CS_CHECK_TOOLS(_CS_CLCF_SHVAR([$2]), [$2-config])
AS_IF([test -n "$_CS_CLCF_SHVAR([$2])"],
[AS_IF([test -z "$_CS_CLCF_CVAR([$2])"],
[AS_IF([$_CS_CLCF_SHVAR([$2]) --cflags --libs >/dev/null 2>&1],
[_CS_CLCF_CVAR([$2])=yes], [_CS_CLCF_CVAR([$2])=no])])
AS_IF([test $_CS_CLCF_CVAR([$2]) = yes],
[_CS_CHECK_LIB_CONFIG_PROG_FLAGS([$1], [config_$2],
[$_CS_CLCF_SHVAR([$2])])])])])
AC_DEFUN([_CS_CLCF_CVAR], [AS_TR_SH([cs_cv_prog_config_$1_ok])])
AC_DEFUN([_CS_CLCF_SHVAR], [m4_toupper(AS_TR_SH([CONFIG_$1]))])
#------------------------------------------------------------------------------
# _CS_CHECK_LIB_CONFIG_PROG_FLAGS(VARIABLE, TAG, CONFIG-PROGRAM, [ARGS])
# Helper macro for _CS_CHECK_LIB_PKG_CONFIG_FLAGS() and
# _CS_CHECK_LIB_CONFIG_FLAGS(). CONFIG-PROGRAM is a command which
# responds to the --cflags and --libs options and returns suitable
# compiler and linker flags for some package. ARGS, if supplied, is
# passed to CONFIG-PROGRAM after the --cflags or --libs argument. The
# results of the --cflags and --libs options are packed into a build
# tuple and appended to the list of tuples stored in the shell variable
# VARIABLE. TAG is used to compose the name of the cache variable. A good
# choice for TAG is some unique combination of the library name and
# configuration program.
#------------------------------------------------------------------------------
AC_DEFUN([_CS_CHECK_LIB_CONFIG_PROG_FLAGS],
[AS_IF([test -z "$_CS_CLCPF_CVAR([$2])"],
[cs_check_lib_cflag=CS_RUN_PATH_NORMALIZE([$3 --cflags $4])
cs_check_lib_lflag=''
cs_check_lib_libs=CS_RUN_PATH_NORMALIZE([$3 --libs $4])
_CS_CLCPF_CVAR([$2])=CS_CREATE_TUPLE(
[$cs_check_lib_cflag],
[$cs_check_lib_lflag],
[$cs_check_lib_libs])])
$1="$$1 $_CS_CLCPF_CVAR([$2])"])
AC_DEFUN([_CS_CLCPF_CVAR], [AS_TR_SH([cs_cv_prog_$1_flags])])
#------------------------------------------------------------------------------
# _CS_CHECK_LIB_CREATE_FLAGS(VARIABLE, LIBRARY, PATHS)
# Helper macro for CS_CHECK_LIB_WITH(). Constructs a list of build
# tuples suitable for CS_CHECK_BUILD() and appends the tuple list to the
# shell variable VARIABLE. LIBRARY and PATHS have the same meanings as
# the like-named arguments of CS_CHECK_LIB_WITH().
#------------------------------------------------------------------------------
AC_DEFUN([_CS_CHECK_LIB_CREATE_FLAGS],
[for cs_lib_item in $3
do
case $cs_lib_item in
*\|*) CS_SPLIT(
[$cs_lib_item], [cs_check_incdir,cs_check_libdir], [|])
_CS_CHECK_LIB_CREATE_FLAG([$1],
[$cs_check_incdir], [$cs_check_libdir], [$2])
;;
*) _CS_CHECK_LIB_CREATE_FLAG([$1],
[$cs_lib_item/include], [$cs_lib_item/lib], [$2])
_CS_CHECK_LIB_CREATE_FLAG(
[$1], [$cs_lib_item], [$cs_lib_item], [$2])
;;
esac
done])
#------------------------------------------------------------------------------
# _CS_CHECK_LIB_CREATE_FLAG(VARIABLE, HEADER-DIR, LIBRARY-DIR, LIBRARY)
# Helper macro for _CS_CHECK_LIB_CREATE_FLAGS(). Constructs build tuples
# suitable for CS_CHECK_BUILD() for given header and library directories,
# and appends the tuples to the shell variable VARIABLE. Synthesizes
# tuples which check for LIBRARY as a MacOS/X framework, and a standard
# link library.
#------------------------------------------------------------------------------
AC_DEFUN([_CS_CHECK_LIB_CREATE_FLAG],
[AS_IF([test -n "$2"], [cs_check_lib_cflag="-I$2"], [cs_check_lib_cflag=''])
AS_IF([test -n "$3"], [cs_check_lib_lflag="-L$3"], [cs_check_lib_lflag=''])
AS_IF([test -n "$4"],
[cs_check_lib_libs="-l$4"
cs_check_lib_framework="-framework $4"],
[cs_check_lib_libs=''
cs_check_lib_framework=''])
$1="$$1
CS_CREATE_TUPLE(
[$cs_check_lib_cflag],
[$cs_check_lib_lflag],
[$cs_check_lib_framework])
CS_CREATE_TUPLE(
[$cs_check_lib_cflag],
[$cs_check_lib_lflag],
[$cs_check_lib_libs])"])
# checklibtool.m4 -*- Autoconf -*-
#==============================================================================
# Copyright (C)2004 by Eric Sunshine <[email protected]>
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This library 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 Library General Public
# License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#==============================================================================
AC_PREREQ([2.56])
#------------------------------------------------------------------------------
# CS_CHECK_LIBTOOL
# Find and identify the various implementations of libtool. In
# particular, this macro is aware of GNU libtool and Apple's libtool
# (which serves a completely different purpose). On MacOS/X, GNU libtool
# is typically named glibtool, however a user might also use Fink to
# install the unadorned libtool; and the Fink-installed version might
# shadow Apple's own libtool if it appears in the PATH before the Apple
# tool. This macro jumps through the necessary hoops to distinguish and
# locate the various implementations. Sets the shell variable LIBTOOL to
# the located GNU libtool (if any), and APPLE_LIBTOOL to the located
# Apple libtool. Invokes AC_SUBST() for LIBTOOL and APPLE_LIBTOOL.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_LIBTOOL],
[# GNU: Search for libtool before glibtool since Fink version is likely newer.
m4_define([cs_lt_path_gnu],
[/sw/bin$PATH_SEPARATOR/usr/local/bin$PATH_SEPARATOR$PATH])
AS_IF([test -z "$LIBTOOL"],
[CS_CHECK_TOOLS([LIBTOOL_TEST], [libtool glibtool gnulibtool], [],
[cs_lt_path_gnu])
AS_IF([test -n "$LIBTOOL_TEST"],
[CS_PATH_PROG([LIBTOOL_PATH], [$LIBTOOL_TEST], [], [cs_lt_path_gnu])
CS_LIBTOOL_CLASSIFY([$LIBTOOL_PATH],
[LIBTOOL="$LIBTOOL_PATH"],
[AS_IF([test -z "$APPLE_LIBTOOL"], [APPLE_LIBTOOL="$LIBTOOL_PATH"])
CS_CHECK_TOOLS([LIBTOOL], [glibtool gnulibtool])])])])
AC_SUBST([LIBTOOL])
# Apple: Ensure that Apple libtool will be found before GNU libtool from Fink.
m4_define([cs_lt_path_apple],[/bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH])
AS_IF([test -z "$APPLE_LIBTOOL"],
[CS_PATH_PROG([CS_LT_APPLE], [libtool], [], [cs_lt_path_apple])
CS_LIBTOOL_CLASSIFY([$CS_LT_APPLE], [],
[APPLE_LIBTOOL="$CS_LT_APPLE"])])
AC_SUBST([APPLE_LIBTOOL])])
AC_DEFUN([CS_LIBTOOL_CLASSIFY],
[AS_IF([test -n "$1"],
[AC_MSG_CHECKING([classification of $1])
CS_LIBTOOL_GNU_IFELSE([$1],
[AC_MSG_RESULT([gnu])
$2],
[AC_MSG_RESULT([apple])
$3])])])
AC_DEFUN([CS_LIBTOOL_GNU_IFELSE],
[AS_IF([AC_RUN_LOG([$1 --version 1>&2])], [$2], [$3])])
#==============================================================================
# Copyright (C)2003-2006 by Eric Sunshine <[email protected]>
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This library 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 Library General Public
# License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#==============================================================================
AC_PREREQ([2.56])
#------------------------------------------------------------------------------
# CS_CHECK_OPENGL
# Check for OpenGL.
#
# IMPLEMENTATION NOTES
#
# Some Mesa installations require pthread, so pthread flags are employed if
# available.
#
# The check for opengl32 needs to precede other checks because Cygwin users
# often have Mesa installed, and Mesa's OpenGL library is compiled without the
# __stdcall flags which results in link errors, whereas Microsoft's native
# opengl32 works fine. Conversely, some Unix implementations have Wine
# installed (Windows emulation layer) which includes an opengl32.so library.
# We need to avoid detection of this library on Unix since it would cause an
# undesirable dependence upon Wine.
#
# Many OpenGL libraries on Unix already contain GLX, so there is no separate
# GLX library, thus we first check for GLX using the discovered OpenGL library
# before attempting to locate a separate GLX-specific library.
#
# On MacOS/X, some users have XFree86 installed which creates a link from
# /usr/include/GL to /usr/X11R6/include/GL. We want to ignore this directory
# and instead check for Apple's OpenGL.framework, if we are not cross-building
# for Darwin. We accomplish this by placing the OpenGL.framework test ahead of
# the other tests.
#
# At least one user (Jorrit) has a strange installation in which inclusion of
# <windows.h> fails if an int32 is not present, thus we must take this into
# account.
#------------------------------------------------------------------------------
m4_define([cs_define_int32],
[[#if !HAVE_TYPE_INT32
typedef long int32;
#endif
]])
# CS_GL_INCLUDE(CPP-MACRO,FALLBACK,HEADER)
AC_DEFUN([CS_GL_INCLUDE],
[[#if HAVE_WINDOWS_H
#if !HAVE_TYPE_INT32
typedef long int32;
#endif
#include <windows.h>
#endif
#ifndef CS_HEADER_GLOBAL
#define CS_HEADER_GLOBAL(X,Y) CS_HEADER_GLOBAL_COMPOSE(X,Y)
#define CS_HEADER_GLOBAL_COMPOSE(X,Y) <X/Y>
#endif
#ifdef $1
#include CS_HEADER_GLOBAL($1,$3)
#else
#include <$2/$3>
#endif]])
AC_DEFUN([CS_CHECK_OPENGL],
[AC_REQUIRE([CS_CHECK_HOST])
AC_REQUIRE([CS_CHECK_COMMON_LIBS])
AC_REQUIRE([CS_CHECK_PTHREAD])
AC_REQUIRE([AC_PATH_X])
AC_REQUIRE([AC_PATH_XTRA])
AC_CHECK_TYPE([int32], [AC_DEFINE([HAVE_TYPE_INT32], [],
[Whether the int32 type is available])], [])
AC_CHECK_HEADERS([windows.h], [], [], [cs_define_int32])
# Apply plaform-specific flags if necessary.
cs_gl_plat_cflags=''
cs_gl_plat_lflags=''
cs_gl_plat_libs=''
AS_IF([test -n "$cs_cv_libm_cflags$cs_cv_libm_lflags$cs_cv_libm_libs"],
[cs_gl_plat_cflags="$cs_cv_libm_cflags $cs_gl_plat_cflags"
cs_gl_plat_lflags="$cs_cv_libm_lflags $cs_gl_plat_lflags"
cs_gl_plat_libs="$cs_cv_libm_libs $cs_gl_plat_libs"])
AS_IF([test $cs_cv_sys_pthread = yes],
[cs_gl_plat_cflags="$cs_cv_sys_pthread_cflags $cs_gl_plat_cflags"
cs_gl_plat_lflags="$cs_cv_sys_pthread_lflags $cs_gl_plat_lflags"
cs_gl_plat_libs="$cs_cv_sys_pthread_libs $cs_gl_plat_libs"])
AS_IF([test "$no_x" != yes],
[cs_gl_plat_cflags="$X_CFLAGS $cs_gl_plat_cflags"
cs_gl_plat_lflags="$cs_gl_plat_lflags"
cs_gl_plat_libs="
$X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS $cs_gl_plat_libs"])
# Mesa requested?
AC_ARG_WITH([mesa], [AC_HELP_STRING([--with-mesa],
[use Mesa OpenGL library if available (default YES)])],
[], [with_mesa=yes])
AS_IF([test $with_mesa != no],
[cs_mesa_gl=CS_CREATE_TUPLE([],[],[-lMesaGL])])
# MacOS/X or Darwin?
AS_IF([test "x$cs_host_macosx" = "xyes"],
[cs_osx_gl=CS_CREATE_TUPLE([-DCS_OPENGL_PATH=OpenGL],[],[-framework OpenGL])])
AS_IF([test "x$cs_host_macosx" = "xyes"],
[cs_gl_plat_lflags="$cs_plat_lflags -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib"])
# Windows?
AS_IF([test $cs_host_family = windows],
[cs_win32_gl=CS_CREATE_TUPLE([],[],[-lopengl32])])
# Check for OpenGL.
CS_CHECK_BUILD([for OpenGL], [cs_cv_libgl],
[AC_LANG_PROGRAM([CS_GL_INCLUDE([CS_OPENGL_PATH],[GL],[gl.h])],[glEnd()])],
[$cs_win32_gl \
$cs_osx_gl \
CS_CREATE_TUPLE([],[],[-lGL]) \
CS_CREATE_TUPLE([],[],[-lgl]) \
$cs_mesa_gl], [],
[CS_EMIT_BUILD_RESULT([cs_cv_libgl], [GL])], [], [],
[$cs_gl_plat_cflags], [$cs_gl_plat_lflags], [$cs_gl_plat_libs])])
#------------------------------------------------------------------------------
# CS_CHECK_GLU
# Check for GLU.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_GLU],
[AC_REQUIRE([CS_CHECK_OPENGL])
AS_IF([test $cs_cv_libgl = yes],
[AS_IF([test $with_mesa != no],
[cs_mesa_glu=CS_CREATE_TUPLE([],[],[-lMesaGLU])])
# MacOS/X or Darwin?
AS_IF([test "x$cs_host_macosx" = "xyes"],
[cs_osx_glu=CS_CREATE_TUPLE([-DCS_GLU_PATH=OpenGL],[],[-framework OpenGL])])
# Windows?
AS_IF([test $cs_host_family = windows],
[cs_win32_glu=CS_CREATE_TUPLE([],[],[-lglu32])])
# Check for GLU.
CS_CHECK_BUILD([for GLU], [cs_cv_libglu],
[AC_LANG_PROGRAM(
[CS_GL_INCLUDE([CS_GLU_PATH],[GL],[glu.h])], [gluNewQuadric()])],
[$cs_osx_glu \
CS_CREATE_TUPLE() \
$cs_win32_glu \
CS_CREATE_TUPLE([],[],[-lGLU]) \
CS_CREATE_TUPLE([],[],[-lglu]) \
$cs_mesa_glu], [],
[CS_EMIT_BUILD_RESULT([cs_cv_libglu], [GLU])], [], [],
[$cs_cv_libgl_cflags], [$cs_cv_libgl_lflags], [$cs_cv_libgl_libs])])])
#------------------------------------------------------------------------------
# CS_CHECK_GLX
# Check for GLX.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_GLX],
[AC_REQUIRE([CS_CHECK_OPENGL])
AS_IF([test $cs_cv_libgl = yes],
[AS_IF([test $with_mesa != no],
[cs_mesa_glx=CS_CREATE_TUPLE([],[],[-lMesaGLX])])
# Check for GLX.
AS_IF([test "$no_x" != yes],
[CS_CHECK_BUILD([for GLX], [cs_cv_libglx],
[AC_LANG_PROGRAM([[#include <GL/glx.h>]], [glXWaitGL()])],
[CS_CREATE_TUPLE() \
CS_CREATE_TUPLE([],[],[-lGLX]) \
CS_CREATE_TUPLE([],[],[-lglx]) \
$cs_mesa_glx], [],
[CS_EMIT_BUILD_RESULT([cs_cv_libglx], [GLX])], [], [],
[$cs_cv_libgl_cflags], [$cs_cv_libgl_lflags], [$cs_cv_libgl_libs])])])])
#------------------------------------------------------------------------------
# CS_CHECK_GLXEXT([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
# Check for GLX extensions.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_GLXEXT],
[AC_REQUIRE([CS_CHECK_GLX])
AS_IF([test x$cs_cv_libglx = "xyes"],
[# Check for GLX extensions.
CS_CHECK_BUILD([for GLX extensions], [cs_cv_libglx_extensions],
[AC_LANG_PROGRAM(
[[#define GLX_GLXEXT_PROTOTYPES
#include <GL/glx.h>]],
[glXGetProcAddressARB(0)])],
[CS_CREATE_TUPLE(
[$cs_cv_libglx_cflags],
[$cs_cv_libglx_lflags],
[$cs_cv_libglx_libs])],
[], [$1], [$2])])])
#------------------------------------------------------------------------------
# CS_CHECK_GLUT
# Check for GLUT.
#------------------------------------------------------------------------------
AC_DEFUN([CS_CHECK_GLUT],
[AC_REQUIRE([CS_CHECK_GLU])
AS_IF([test x$cs_cv_libglu = "xyes"],
[# MacOS/X or Darwin?
AS_IF([test "x$cs_host_macosx" = "xyes"],
[cs_osx_glut=CS_CREATE_TUPLE([-DCS_GLUT_PATH=GLUT],[],[-framework GLUT])])
# Windows?
AS_IF([test $cs_host_family = windows],
[cs_win32_glut=CS_CREATE_TUPLE([],[],[-lglut32])])
# Check for GLUT.
CS_CHECK_BUILD([for GLUT], [cs_cv_libglut],
[AC_LANG_PROGRAM(
[CS_GL_INCLUDE([CS_GLUT_PATH],[GL],[glut.h])], [glutSwapBuffers()])],
[$cs_osx_glut \