X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=aclocal.m4;h=4ebb5ff75b776f50840cb57e40ed06a539b5c4b8;hb=46518c83e1d4a479eec18c7fa87d2df1d60ec07f;hp=1e01c26615b2a99387c521d79459250caac72e50;hpb=6144a6ecd63b78aae6b5df255cb53e2fab971dea;p=ghc-hetmet.git diff --git a/aclocal.m4 b/aclocal.m4 index 1e01c26..4ebb5ff 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -1,4 +1,4 @@ -dnl $Id: aclocal.m4,v 1.36 1999/01/11 10:15:04 sof Exp $ +dnl $Id: aclocal.m4,v 1.59 2000/11/07 10:20:03 simonmar Exp $ dnl dnl Extra autoconf macros for the Glasgow fptools dnl @@ -7,6 +7,28 @@ dnl prefixed with FPTOOLS_ to ensure we don't clash dnl with any pre-supplied autoconf ones. dnl +dnl Is timezone around? (in a header file) +dnl +AC_DEFUN(FPTOOLS_HAVE_TIMEZONE, +[AC_CACHE_CHECK([timezone], fptools_cv_have_timezone, +[AC_TRY_COMPILE([#if TIME_WITH_SYS_TIME +# include +# include +#else +# if HAVE_SYS_TIME_H +# include +# else +# include +# endif +#endif +], [return timezone;], +fptools_cv_have_timezone=yes, fptools_cv_have_timezone=no)]) +if test "$fptools_cv_have_timezone" = yes; then + AC_DEFINE(HAVE_TIMEZONE) +fi +]) + +dnl dnl Has timezone the type time_t or long (HP-UX 10.20 apparently dnl has `long'..) dnl @@ -23,7 +45,7 @@ AC_DEFUN(FPTOOLS_TYPE_TIMEZONE, # endif #endif -extern time_t timezone; +extern time_t timezone; ], [int i;], fptools_cv_type_timezone=time_t, fptools_cv_type_timezone=long)]) AC_DEFINE_UNQUOTED(TYPE_TIMEZONE, $fptools_cv_type_timezone) @@ -51,6 +73,25 @@ fi ]) +dnl *** Does libc contain GNU regex? *** +dnl +AC_DEFUN(FPTOOLS_REGEX_IN_LIBC, +[AC_CACHE_CHECK([for GNU regex in libc], fptools_cv_have_regex, +[AC_TRY_LINK([#if HAVE_UNISTD_H +#include +#endif +#include +],[ struct re_pattern_buffer patbuf; re_compile_pattern("",0,&patbuf); ], +fptools_cv_have_regex=yes, fptools_cv_have_regex=no)]) +if test "$fptools_cv_have_regex" = yes; then + HaveRegex=YES +else + HaveRegex=NO +fi +AC_SUBST(HaveRegex) +]) + + dnl ** check for leading underscores in symbol names dnl dnl Test for determining whether symbol names have a leading @@ -77,7 +118,8 @@ changequote(<<, >>)dnl << case $HostPlatform in alpha-dec-osf*) fptools_cv_lead_uscore='no';; -*cygwin32) fptools_cv_lead_uscore='yes';; +*cygwin32) fptools_cv_lead_uscore='yes';; +*mingw32) fptools_cv_lead_uscore='yes';; *) >> changequote([, ])dnl AC_TRY_RUN([#ifdef HAVE_NLIST_H @@ -111,7 +153,12 @@ esac ]) dnl -dnl Check for Happy and version. +dnl Check for Happy and version. If we're building GHC, then we need +dnl at least Happy version 1.6. If there's no installed Happy, we look +dnl for a happy source tree and point the build system at that instead. +dnl +dnl ToDo: when we reset HappyCmd to the source tree, autoconf doesn't +dnl seems to insert it in the cache file. sigh. dnl AC_DEFUN(FPTOOLS_HAPPY, [AC_PATH_PROG(HappyCmd,happy) @@ -120,17 +167,23 @@ AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version, fptools_cv_happy_version="`$HappyCmd -v | changequote(, )dnl grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ; -changequote([, ])dnl +elif test -d $srcdir/happy; then + HappyCmd=$hardtop/happy/src/happy-inplace; + fptools_cv_happy_version=`grep '^ProjectVersion[ ]*=' $srcdir/happy/mk/version.mk | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`; + echo -n "using happy from the source tree... "; else fptools_cv_happy_version=""; fi; -if expr "$fptools_cv_happy_version" "<" 1.4 > /dev/null 2>&1; then - echo - echo "Happy version 1.4 or later is required to compile GHC." - exit 1; +changequote([, ])dnl +if expr "$fptools_cv_happy_version" "<" 1.6 > /dev/null 2>&1; then + if test -d $srcdir/ghc; then + echo + echo "Happy version 1.6 or later is required to compile GHC." + exit 1; + fi fi; ]) -HappyVersion=$ac_cv_happy_version; +HappyVersion=$fptools_cv_happy_version; AC_SUBST(HappyVersion) ]) @@ -280,66 +333,80 @@ HaveGcc=`echo $fptools_cv_have_gcc | sed 'y/yesno/YESNO/'` AC_SUBST(HaveGcc) ]) -dnl -dnl FPTOOLS_PROG_GNUCPP gathers the path to the cpp that the -dnl gcc driver calls upon. -dnl -dnl Substitutes: GNUCPP and RAWCPP (latter is 'GNUCPP -traditional') -dnl -AC_DEFUN(FPTOOLS_PROG_GNUCPP, -[AC_CACHE_CHECK([how to invoke GNU cpp directly], fptools_cv_gnu_cpp, -[if test "$HaveGcc" = "YES"; then - echo > conftest.c - gcc -v -E conftest.c >/dev/null 2>conftest.out - # \x5c = backslash - echo 'tr/\x5c/\//; /(\S+\/)cpp/ && print "[$]{1}cpp -iprefix [$]1";' > conftest.pl - fptools_cv_gnu_cpp="`eval $PerlCmd -n conftest.pl conftest.out`" - rm -fr conftest* - else - # We need to be able to invoke CPP directly, preferably - # with input from stdin (mkdependHS and hscpp depend on - # this at the moment). - # Take a guess at what to use, this probably won't work. - echo Warning: GNU cpp not found, using $CPP - fptools_cv_gnu_cpp = $CPP - fi -]) -GNUCPP=$fptools_cv_gnu_cpp -RAWCPP="$GNUCPP -traditional" -AC_SUBST(GNUCPP) -AC_SUBST(RAWCPP) -]) - dnl Small feature test for perl version. Assumes PerlCmd dnl contains path to perl binary dnl AC_DEFUN(FPTOOLS_CHECK_PERL_VERSION, [$PerlCmd -v >conftest.out 2>&1 -if grep "version 4" conftest.out >/dev/null 2>&1; then - if grep "Patch level: 35" conftest.out >/dev/null 2>&1; then - echo " -************************************************************************ -Uh-oh...looks like you have Perl 4.035. - -Perl version 4.035 has a bug to do with recursion that will bite if -you run the lit2texi script, when making Info files from -literate files of various sorts. Either use perl5, the last version of perl4 -(4.036), or an older version (e.g., perl 4.019). Failing that, don't create -any Info files :-) -************************************************************************ -" - fi +if grep "version 5" conftest.out >/dev/null 2>&1; then + : else - if grep "version 5" conftest.out >/dev/null 2>&1; then - : - else - echo "I'm not sure if your version of perl will work," - echo "but it's worth a shot, eh?" - fi + if grep "v5.6" conftest.out >/dev/null 2>&1; then + : + else + if grep "version 6" conftest.out >/dev/null 2>&1; then + : + else + echo "Your version of perl probably won't work." + fi + fi fi rm -fr conftest* ]) +dnl +dnl FPTOOLS_GHC_VERSION(version) +dnl FPTOOLS_GHC_VERSION(major, minor [, patchlevel]) +dnl FPTOOLS_GHC_VERSION(version, major, minor, patchlevel) +dnl +dnl Test for version of installed ghc. Uses $GHC. +dnl [original version pinched from c2hs] +dnl +AC_DEFUN(FPTOOLS_GHC_VERSION, +[define([FPTOOLS_CV_GHC_VERSION], [fptools_cv_ghc_version])dnl +AC_CACHE_CHECK([version of ghc], FPTOOLS_CV_GHC_VERSION, [dnl +${WithGhc-ghc} --version > conftestghc 2>&1 + cat conftestghc >&AC_FD_CC +dnl `Useless Use Of cat' award... +changequote(<<, >>)dnl + FPTOOLS_CV_GHC_VERSION=`cat conftestghc | sed -n -e 's/, patchlevel *\([0-9]\)/.\1/;s/.* version \([0-9.]\+\).*/\1/p'` +changequote([, ])dnl + rm -fr conftest* + if test "[$]FPTOOLS_CV_GHC_VERSION" = "" + then + FPTOOLS_CV_GHC_VERSION='unknown' + fi]) +changequote(<<, >>)dnl +FPTOOLS_CV_GHC_VERSION<<_major>>=`echo <<$>>FPTOOLS_CV_GHC_VERSION | sed -e 's/^\([0-9]\).*/\1/'` +FPTOOLS_CV_GHC_VERSION<<_minor>>=`echo <<$>>FPTOOLS_CV_GHC_VERSION | sed -e 's/^[0-9]\.\([0-9]*\).*/\1/'` +FPTOOLS_CV_GHC_VERSION<<_pl>>=`echo <<$>>FPTOOLS_CV_GHC_VERSION | sed -n -e 's/^[0-9]\.[0-9]*\.\([0-9]*\)/\1/p'` +changequote([, ])dnl +if test "[$]FPTOOLS_CV_GHC_VERSION[_pl]" = "" +then + FPTOOLS_CV_GHC_VERSION[_all]="[$]FPTOOLS_CV_GHC_VERSION[_major].[$]FPTOOLS_CV_GHC_VERSION[_minor]" + FPTOOLS_CV_GHC_VERSION[_pl]="0" +else + FPTOOLS_CV_GHC_VERSION[_all]="[$]FPTOOLS_CV_GHC_VERSION[_major].[$]FPTOOLS_CV_GHC_VERSION[_minor].[$]FPTOOLS_CV_GHC_VERSION[_pl]" +fi +ifelse($#, [1], [dnl +[$1]="[$]FPTOOLS_CV_GHC_VERSION[_all]" +], $#, [2], [dnl +[$1]="[$]FPTOOLS_CV_GHC_VERSION[_major]" +[$2]="[$]FPTOOLS_CV_GHC_VERSION[_minor]" +], $#, [3], [dnl +[$1]="[$]FPTOOLS_CV_GHC_VERSION[_major]" +[$2]="[$]FPTOOLS_CV_GHC_VERSION[_minor]" +[$3]="[$]FPTOOLS_CV_GHC_VERSION[_pl]" +], $#, [4], [dnl +[$1]="[$]FPTOOLS_CV_GHC_VERSION[_all]" +[$2]="[$]FPTOOLS_CV_GHC_VERSION[_major]" +[$3]="[$]FPTOOLS_CV_GHC_VERSION[_minor]" +[$4]="[$]FPTOOLS_CV_GHC_VERSION[_pl]" +], [AC_MSG_ERROR([wrong number of arguments to [$0]])])dnl +undefine([FPTOOLS_CV_GHC_VERSION])dnl +])dnl + + dnl ** figure out the alignment restriction of a type dnl (required SIZEOF test but AC_CHECK_SIZEOF doesn't call PROVIDE dnl so we can't call REQUIRE) @@ -369,7 +436,7 @@ main() { FILE *f=fopen("conftestval", "w"); if (!f) exit(1); - fprintf(f, "%d\n", offsetof(struct { char c; $1 ty;},ty)); + fprintf(f, "%d", offsetof(struct { char c; $1 ty;},ty)); exit(0); }], AC_CV_NAME=`cat conftestval`, @@ -383,6 +450,56 @@ undefine([AC_CV_NAME])dnl undefine([AC_CV_SIZEOF_NAME])dnl ]) +dnl ** Map an arithmetic C type to a Haskell type. +dnl Based on autconf's AC_CHECK_SIZEOF. + +dnl FPTOOLS_CHECK_HTYPE(TYPE [, DEFAULT_VALUE, [, VALUE-FOR-CROSS-COMPILATION]) +AC_DEFUN(FPTOOLS_CHECK_HTYPE, +[changequote(<<, >>)dnl +dnl The name to #define. +define(<>, translit(htype_$1, [a-z *], [A-Z_P]))dnl +dnl The cache variable name. +define(<>, translit(fptools_cv_htype_$1, [ *], [_p]))dnl +changequote([, ])dnl +AC_MSG_CHECKING(Haskell type for $1) +AC_CACHE_VAL(AC_CV_NAME, +[AC_TRY_RUN([#include +#include +#ifdef HAVE_SIGNAL_H +#include +#endif +#ifdef HAVE_TIME_H +#include +#endif +#ifdef HAVE_GL_GL_H +#include +#endif + +typedef $1 testing; + +main() { + FILE *f=fopen("conftestval", "w"); + if (!f) exit(1); + if (((testing)((int)((testing)1.4))) == ((testing)1.4)) { + fprintf(f, "%s%d\n", + ((testing)(-1) < (testing)0) ? "Int" : "Word", + sizeof(testing)*8); + } else { + fprintf(f,"%s\n", + (sizeof(testing) > sizeof(double)) ? "LDouble" : + (sizeof(testing) == sizeof(double)) ? "Double" : "Float"); + } + fclose(f); + exit(0); +}], AC_CV_NAME=`cat conftestval`, +ifelse([$2], , AC_CV_NAME=NotReallyAType, AC_CV_NAME=$2), +ifelse([$3], , AC_CV_NAME=NotReallyATypeCross, AC_CV_NAME=$3))]) dnl +AC_MSG_RESULT($AC_CV_NAME) +AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME) +undefine([AC_TYPE_NAME])dnl +undefine([AC_CV_NAME])dnl +]) + dnl ** figure out whether C compiler supports 'long long's dnl (Closely based on Andreas Zeller's macro for testing dnl for this under C++) @@ -459,7 +576,7 @@ dnl AC_DEFUN(FPTOOLS_END_TEXT_SECTION, [AC_MSG_CHECKING([for end of text section marker]) not_done=1 -for i in etext _etext __etext; do +for i in data_start _data_start etext _etext __etext; do FPTOOLS_IN_SCOPE($i,$i,fptools_end_of_text) if test "$fptools_end_of_text" = yes; then AC_CACHE_VAL([fptools_cv_end_of_text_decl], AC_DEFINE_UNQUOTED(TEXT_SECTION_END_MARKER_DECL, $i)) @@ -601,5 +718,266 @@ AC_DEFINE(HAVE_PROTOTYPES) fi ]) +dnl ** Check which CATALOG file we have to use with DocBook SGML. +dnl +dnl FPTOOLS_DOCBOOK_CATALOG(VARIABLE, JADE, STYLESHEET, CATALOGS-TO-CHECK-FOR) +dnl +dnl If any of the catalogs given in CATALOGS-TO-CHECK-FOR works on this +dnl platform, let VARIABLE refer to this catalog; otherwise, VARIABLE +dnl is set to "no". JADE is the jade executable and STYLESHEET +dnl a DocBook style sheet. +dnl +AC_DEFUN(FPTOOLS_DOCBOOK_CATALOG, +[AC_CACHE_CHECK([for DocBook CATALOG], fptools_cv_sgml_catalog, +[ +cat > conftest.sgml << EOF + +
+ +Test +Test +
Test
+Test + +Test + +Test. + + +
+EOF +fptools_cv_sgml_catalog=no +for fptools_catalog in $4; do + ac_try="$2 -t rtf -d $3#print -c $fptools_catalog conftest.sgml" + if AC_TRY_EVAL(ac_try); then + fptools_cv_sgml_catalog=[$]fptools_catalog + break + fi +done +]) +rm -rf conftest* +if test $fptools_cv_sgml_catalog != "no"; then + $1=$fptools_cv_sgml_catalog +fi +]) + +dnl ###################################################################### +dnl FPTOOLS_SEARCH_LIBS(INCLUDES, FUNCTION, SEARCH-LIBS [, ACTION-IF-FOUND +dnl [, ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]]) +dnl Search for a library defining FUNC, if it's not already available. +dnl This is almost the same as AC_SEARCH_LIBS, but the INCLUDES can be +dnl specified. +dnl ###################################################################### + +AC_DEFUN(FPTOOLS_SEARCH_LIBS, +[AC_PREREQ([2.13]) +AC_CACHE_CHECK([for library containing $2], [ac_cv_search_$2], +[ac_func_search_save_LIBS="$LIBS" +ac_cv_search_$2="no" +AC_TRY_LINK([$1], [$2()], [ac_cv_search_$2="none required"]) +test "$ac_cv_search_$2" = "no" && for i in $3; do +LIBS="-l$i $6 $ac_func_search_save_LIBS" +AC_TRY_LINK([$1], [$2()], +[ac_cv_search_$2="-l$i" +break]) +done +LIBS="$ac_func_search_save_LIBS"]) +if test "$ac_cv_search_$2" != "no"; then + test "$ac_cv_search_$2" = "none required" || LIBS="$ac_cv_search_$2 $LIBS" + $4 +else : + $5 +fi]) + +dnl ####################### -*- Mode: M4 -*- ########################### +dnl Copyright (C) 98, 1999 Matthew D. Langston +dnl +dnl This file is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2 of the License, or +dnl (at your option) any later version. +dnl +dnl This file is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +dnl General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this file; if not, write to: +dnl +dnl Free Software Foundation, Inc. +dnl Suite 330 +dnl 59 Temple Place +dnl Boston, MA 02111-1307, USA. +dnl #################################################################### + + +dnl @synopsis FPTOOLS_CHECK_LIBM +dnl +dnl Search for math library (typically -lm). +dnl +dnl The variable LIBM (which is not an output variable by default) is +dnl set to a value which is suitable for use in a Makefile (for example, +dnl in make's LOADLIBES macro) provided you AC_SUBST it first. +dnl +dnl @version 0.01 $Id: aclocal.m4,v 1.59 2000/11/07 10:20:03 simonmar Exp $ +dnl @author Matthew D. Langston + +# FPTOOLS_CHECK_LIBM - check for math library +AC_DEFUN(FPTOOLS_CHECK_LIBM, +[AC_REQUIRE([AC_CANONICAL_HOST])dnl +LIBM= +case "$host" in +*-*-beos* | *-*-cygwin*) + # These system don't have libm + ;; +*-ncr-sysv4.3*) + AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw") + AC_CHECK_LIB(m, main, LIBM="$LIBM -lm") + ;; +*) + AC_CHECK_LIB(m, main, LIBM="-lm") + ;; +esac +]) + +dnl ###################################################################### +dnl NOTE: Because of portability issues between different autoconf +dnl versions the AC_HELP_STRING macro has been removed from FPTOOLS_HAVE_OPENGL. +dnl Furthermore, caching has been completely rewritten. +dnl ###################################################################### + +dnl ########################### -*- Mode: M4 -*- ####################### +dnl Copyright (C) 98, 1999 Matthew D. Langston +dnl +dnl This file is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2 of the License, or +dnl (at your option) any later version. +dnl +dnl This file is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +dnl General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this file; if not, write to: +dnl +dnl Free Software Foundation, Inc. +dnl Suite 330 +dnl 59 Temple Place +dnl Boston, MA 02111-1307, USA. +dnl #################################################################### + +dnl @synopsis FPTOOLS_HAVE_OPENGL +dnl +dnl Search for OpenGL. We search first for Mesa (a GPL'ed version of +dnl OpenGL) before a vendor's version of OpenGL, unless we were +dnl specifically asked not to with `--with-Mesa=no' or `--without-Mesa'. +dnl +dnl The four "standard" OpenGL libraries are searched for: "-lGL", +dnl "-lGLU", "-lGLX" (or "-lMesaGL", "-lMesaGLU" as the case may be) and +dnl "-lglut". +dnl +dnl All of the libraries that are found (since "-lglut" or "-lGLX" might +dnl be missing) are added to the shell output variable "GL_LIBS", along +dnl with any other libraries that are necessary to successfully link an +dnl OpenGL application (e.g. the X11 libraries). Care has been taken to +dnl make sure that all of the libraries in "GL_LIBS" are listed in the +dnl proper order. +dnl +dnl Additionally, the shell output variable "GL_CFLAGS" is set to any +dnl flags (e.g. "-I" flags) that are necessary to successfully compile +dnl an OpenGL application. +dnl +dnl The following shell variable (which are not output variables) are +dnl also set to either "yes" or "no" (depending on which libraries were +dnl found) to help you determine exactly what was found. +dnl +dnl have_GL +dnl have_GLU +dnl have_GLX +dnl have_glut +dnl +dnl A complete little toy "Automake `make distcheck'" package of how to +dnl use this macro is available at: +dnl +dnl ftp://ftp.slac.stanford.edu/users/langston/autoconf/ac_opengl-0.01.tar.gz +dnl +dnl Please note that as the ac_opengl macro and the toy example evolves, +dnl the version number increases, so you may have to adjust the above +dnl URL accordingly. +dnl +dnl @version 0.01 $Id: aclocal.m4,v 1.59 2000/11/07 10:20:03 simonmar Exp $ +dnl @author Matthew D. Langston + +AC_DEFUN(FPTOOLS_HAVE_OPENGL, +[ + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_PATH_X]) + AC_REQUIRE([AC_PATH_XTRA]) + AC_REQUIRE([FPTOOLS_CHECK_LIBM]) + +dnl Check for Mesa first, unless we were asked not to. +dnl AC_HELP_STRING([--with-Mesa], +dnl [Prefer the Mesa library over a vendors native OpenGL library (default=yes)], +dnl with_Mesa_help_string) +dnl AC_ARG_ENABLE(Mesa, $with_Mesa_help_string, use_Mesa=$enableval, use_Mesa=yes) + AC_ARG_ENABLE(Mesa, [ --with-Mesa Prefer the Mesa library over a vendors native OpenGL library (default=yes)], use_Mesa=$enableval, use_Mesa=yes) + + if test x"$use_Mesa" = xyes; then + GL_search_list="MesaGL GL opengl32" + GLU_search_list="MesaGLU GLU glu32" + GLX_search_list="MesaGLX GLX" + else + GL_search_list="GL opengl32 MesaGL" + GLU_search_list="GLU glu32 MesaGLU" + GLX_search_list="GLX MesaGLX" + fi + + AC_LANG_SAVE + AC_LANG_C + +dnl If we are running under X11 then add in the appropriate libraries. + if ! test x"$no_x" = xyes; then +dnl Add everything we need to compile and link X programs to GL_CFLAGS +dnl and GL_X_LIBS. + GL_CFLAGS="$X_CFLAGS" + GL_X_LIBS="$X_PRE_LIBS $X_LIBS -lX11 -lXext -lXmu -lXt -lXi $X_EXTRA_LIBS $LIBM" + fi + GL_save_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$GL_CFLAGS" + + GL_save_LIBS="$LIBS" + LIBS="$GL_X_LIBS" + + FPTOOLS_SEARCH_LIBS([#include ], glEnd, $GL_search_list, have_GL=yes, have_GL=no) + FPTOOLS_SEARCH_LIBS([#include ], gluNewQuadric, $GLU_search_list, have_GLU=yes, have_GLU=no) + FPTOOLS_SEARCH_LIBS([#include ], glXChooseVisual, $GLX_search_list, have_GLX=yes, have_GLX=no) + FPTOOLS_SEARCH_LIBS([#include ], glutMainLoop, glut glut32, have_glut=yes, have_glut=no) + + if test -n "$LIBS"; then + GL_LIBS="$LIBS" + else + GL_LIBS= + GL_CFLAGS= + fi + + AC_CACHE_CHECK([OpenGL flags], mdl_cv_gl_cflags, [mdl_cv_gl_cflags="$GL_CFLAGS"]) + GL_CFLAGS="$mdl_cv_gl_cflags" + AC_SUBST(GL_CFLAGS) + AC_CACHE_CHECK([OpenGL libs], mdl_cv_gl_libs, [mdl_cv_gl_libs="$GL_LIBS"]) + GL_LIBS="$mdl_cv_gl_libs" + AC_SUBST(GL_LIBS) + +dnl Reset GL_X_LIBS regardless, since it was just a temporary variable +dnl and we don't want to be global namespace polluters. + GL_X_LIBS= + + LIBS="$GL_save_LIBS" + CPPFLAGS="$GL_save_CPPFLAGS" + + AC_LANG_RESTORE +]) # LocalWords: fi