-# $Id: aclocal.m4,v 1.19 1998/03/03 04:45:07 reid Exp $
-#
-# Extra autoconf macros for the Glasgow fptools
-#
+dnl $Id: aclocal.m4,v 1.82 2001/07/23 22:52:33 ken Exp $
+dnl
+dnl Extra autoconf macros for the Glasgow fptools
+dnl
+dnl To be a good autoconf citizen, names of local macros have
+dnl prefixed with FPTOOLS_ to ensure we don't clash
+dnl with any pre-supplied autoconf ones.
-#
-# Are we running under the GNU libc? Need -D_GNU_SOURCE to get
-# caddr_t and such.
-#
-AC_DEFUN(AC_GNU_LIBC,
-[AC_CACHE_CHECK([GNU libc], ac_cv_gnu_libc,
-[AC_EGREP_CPP(yes,
-[#include <features.h>
-#ifdef __GLIBC__
-yes
+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 <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
#endif
-], ac_cv_gnu_libc=yes, ac_cv_gnu_libc=no)])
-if test "$ac_cv_gnu_libc" = yes; then
- AC_DEFINE(_GNU_SOURCE)
+], [return timezone;],
+fptools_cv_have_timezone=yes, fptools_cv_have_timezone=no)])
+if test "$fptools_cv_have_timezone" = yes; then
+ AC_DEFINE(HAVE_TIMEZONE)
fi
])
-#
-# Has timezone the type time_t or long (HP-UX 10.20 apparently
-# has `long'..)
-#
-AC_DEFUN(AC_TYPE_TIMEZONE,
-[AC_CACHE_CHECK([type of timezone], ac_cv_type_timezone,
+dnl
+dnl Has timezone the type time_t or long (HP-UX 10.20 apparently
+dnl has `long'..)
+dnl
+AC_DEFUN(FPTOOLS_TYPE_TIMEZONE,
+[AC_CACHE_CHECK([type of timezone], fptools_cv_type_timezone,
[AC_TRY_COMPILE([#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
# endif
#endif
-extern time_t timezone;
+extern time_t timezone;
],
-[int i;], ac_cv_type_timezone=time_t, ac_cv_type_timezone=long)])
-AC_DEFINE_UNQUOTED(TYPE_TIMEZONE, $ac_cv_type_timezone)
+[int i;], fptools_cv_type_timezone=time_t, fptools_cv_type_timezone=long)])
+AC_DEFINE_UNQUOTED(TYPE_TIMEZONE, $fptools_cv_type_timezone)
])
-#
-# Is altzone available?
-#
-AC_DEFUN(AC_ALTZONE,
-[AC_CACHE_CHECK([altzone], ac_cv_altzone,
+dnl *** Is altzone available? ***
+dnl
+AC_DEFUN(FPTOOLS_ALTZONE,
+[AC_CACHE_CHECK([altzone], fptools_cv_altzone,
[AC_TRY_LINK([#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
# endif
#endif
], [return altzone;],
-ac_cv_altzone=yes, ac_cv_altzone=no)])
-if test "$ac_cv_altzone" = yes; then
+fptools_cv_altzone=yes, fptools_cv_altzone=no)])
+if test "$fptools_cv_altzone" = yes; then
AC_DEFINE(HAVE_ALTZONE)
fi
])
-#
+
+dnl *** Does libc contain GNU regex? ***
+dnl
+AC_DEFUN(FPTOOLS_REGEX_IN_LIBC,
+[AC_CACHE_CHECK([for GNU regex in libc], fptools_cv_have_regex,
+[AC_TRY_LINK([#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <regex.h>
+],[ struct re_pattern_buffer patbuf;
+ re_compile_pattern("",0,&patbuf);
+ re_search_2 (&patbuf, "", 0, "",0, 0,0,0,0); ],
+fptools_cv_have_regex=yes, fptools_cv_have_regex=no)])
+if test "$fptools_cv_have_regex" = yes; then
+ HaveRegex=YES
+else
+ HaveRegex=NO
+fi
+AC_SUBST(HaveRegex)
+])
+
+
dnl ** check for leading underscores in symbol names
-#
-# Test for determining whether symbol names have a leading
-# underscore.
-#
-# We assume that they _haven't_ if anything goes wrong.
-#
-AC_DEFUN(AC_UNDERSCORE,
+dnl
+dnl Test for determining whether symbol names have a leading
+dnl underscore.
+dnl
+dnl We assume that they _haven't_ if anything goes wrong.
+dnl
+dnl Some nlist implementations seem to try to be compatible by ignoring
+dnl a leading underscore sometimes (eg. FreeBSD). We therefore have
+dnl to work around this by checking for *no* leading underscore first.
+dnl Sigh. --SDM
+dnl
+AC_DEFUN(FPTOOLS_UNDERSCORE,
[AC_CHECK_LIB(elf, nlist, LIBS="-lelf $LIBS")dnl
-AC_CACHE_CHECK([leading underscore in symbol names], ac_cv_lead_uscore,
-#
-# Hack!: nlist() under Digital UNIX insist on there being an _,
-# but symbol table listings show none. What is going on here?!?
-#
+AC_CACHE_CHECK([leading underscore in symbol names], fptools_cv_lead_uscore,
+
+dnl
+dnl Hack!: nlist() under Digital UNIX insist on there being an _,
+dnl but symbol table listings shows none. What is going on here?!?
+dnl
+dnl Another hack: cygwin doesn't come with nlist.h , so we hardwire
+dnl the underscoredness of that "platform"
changequote(<<, >>)dnl
<<
case $HostPlatform in
-alpha-dec-osf*) ac_cv_lead_uscore='no';;
+alpha-dec-osf*) fptools_cv_lead_uscore='no';;
+*cygwin32) fptools_cv_lead_uscore='yes';;
+*mingw32) fptools_cv_lead_uscore='yes';;
*) >>
changequote([, ])dnl
AC_TRY_RUN([#ifdef HAVE_NLIST_H
#include <nlist.h>
changequote(<<, >>)dnl
<<
-struct nlist xYzzY[] = {{"_xYzzY", 0},{0}};
+struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
+struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
#endif
main(argc, argv)
char **argv;
{
#ifdef HAVE_NLIST_H
- if(nlist(argv[0], xYzzY) == 0 && xYzzY[0].n_value != 0)
+ if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
+ exit(1);
+ if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
exit(0);>>
changequote([, ])dnl
#endif
exit(1);
-}], ac_cv_lead_uscore=yes, ac_cv_lead_uscore=no, ac_cv_lead_uscore=NO)
+}], fptools_cv_lead_uscore=yes, fptools_cv_lead_uscore=no, fptools_cv_lead_uscore=NO)
;;
esac);
-LeadingUnderscore=`echo $ac_cv_lead_uscore | sed 'y/yesno/YESNO/'`
+LeadingUnderscore=`echo $fptools_cv_lead_uscore | sed 'y/yesno/YESNO/'`
AC_SUBST(LeadingUnderscore)
+case $LeadingUnderscore in
+YES) AC_DEFINE(LEADING_UNDERSCORE);;
+esac
])
-#
-# Check for Happy and version.
-#
-AC_DEFUN(AC_HAPPY,
-[AC_PATH_PROG(HappyCmd,happy)
-AC_CACHE_CHECK([for version of happy], ac_cv_happy_version,
-[if test x"$HappyCmd" != x; then
- ac_cv_happy_version="`$HappyCmd -v |
+dnl
+dnl FPTOOLS_PROG_CHECK_VERSION(VERSIONSTR1, TEST, VERSIONSTR2,
+dnl ACTION-IF-TRUE [, ACTION-IF-FALSE])
+dnl
+dnl compare versions field-wise (separator is '.')
+dnl TEST is one of {-lt,-le,-eq,-ge,-gt}
+dnl
+dnl quite shell-independant and SUSv2 compliant code
+dnl
+dnl NOTE: the loop could be unrolled within autoconf, but the
+dnl macro code would be a) longer and b) harder to debug... ;)
+dnl
+AC_DEFUN(FPTOOLS_PROG_CHECK_VERSION,
+[if ( IFS=".";
+ a="[$1]"; b="[$3]";
+ while test -n "$a$b"
+ do
+ set -- [$]a; h1="[$]1"; shift 2>/dev/null; a="[$]*"
+ set -- [$]b; h2="[$]1"; shift 2>/dev/null; b="[$]*"
+ test -n "[$]h1" || h1=0; test -n "[$]h2" || h2=0
+ test [$]{h1} -eq [$]{h2} || break
+ done
+ test [$]{h1} [$2] [$]{h2}
+ )
+then ifelse([$4],,[:],[
+ $4])
+ifelse([$5],,,
+[else
+ $5])
+fi
+])])dnl
+
+
+dnl
+dnl Check for Happy and version. If we're building GHC, then we need
+dnl at least Happy version 1.9. If there's no installed Happy, we look
+dnl for a happy source tree and point the build system at that instead.
+dnl
+AC_DEFUN(FPTOOLS_HAPPY,
+[
+if test -d $srcdir/happy; then
+ SrcTreeHappyCmd=$hardtop/happy/src/happy-inplace
+fi
+AC_PATH_PROG(HappyCmd,happy,$SrcTreeHappyCmd)
+AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
changequote(, )dnl
+[if test x"$HappyCmd" = x"$SrcTreeHappyCmd"; then
+ fptools_cv_happy_version=`grep '^ProjectVersion[ ]*=' $srcdir/happy/mk/version.mk | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`;
+elif test x"$HappyCmd" != x; then
+ fptools_cv_happy_version="`$HappyCmd -v |
grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
-changequote([, ])dnl
else
- ac_cv_happy_version="";
-fi;
-if expr "$ac_cv_happy_version" "<" 1.4 > /dev/null 2>&1; then
- echo
- echo "Happy version 1.4 or later is required to compile GHC."
- exit 1;
+ fptools_cv_happy_version="";
fi;
+changequote([, ])dnl
])
-HappyVersion=$ac_cv_happy_version;
+if test -d $srcdir/ghc; then
+ FPTOOLS_PROG_CHECK_VERSION([$fptools_cv_happy_version],-lt,[1.9],
+ [AC_MSG_ERROR([Happy version 1.9 or later is required to compile GHC.])])dnl
+fi
+HappyVersion=$fptools_cv_happy_version;
AC_SUBST(HappyVersion)
])
-#
-# What's the best way of doing context diffs?
-#
-# (NB: NeXTStep thinks diff'ing a file against itself is "trouble")
-#
-AC_DEFUN(AC_PROG_DIFF,
-[AC_CACHE_CHECK([for ok way to do context diffs], ac_cv_context_diffs,
+dnl
+dnl What's the best way of doing context diffs?
+dnl
+dnl (NB: NeXTStep thinks diff'ing a file against itself is "trouble")
+dnl
+AC_DEFUN(FPTOOLS_PROG_DIFF,
+[AC_CACHE_CHECK([for ok way to do context diffs], fptools_cv_context_diffs,
[echo foo > conftest1
echo foo > conftest2
if diff -C 1 conftest1 conftest2 > /dev/null 2>&1 ; then
- ac_cv_context_diffs='diff -C 1'
+ fptools_cv_context_diffs='diff -C 1'
else
if diff -c1 conftest1 conftest2 > /dev/null 2>&1 ; then
- ac_cv_context_diffs='diff -c1'
+ fptools_cv_context_diffs='diff -c1'
else
echo "Can't figure out how to do context diffs."
echo "Neither \`diff -C 1' nor \`diff -c1' works."
fi
rm -f conftest1 conftest2
])
-ContextDiffCmd=$ac_cv_context_diffs
+ContextDiffCmd=$fptools_cv_context_diffs
AC_SUBST(ContextDiffCmd)
])
-#
-# Finding the Right Yacc
-#
-AC_DEFUN(AC_PROG_YACCY,
+dnl
+dnl Finding the Right Yacc
+dnl
+AC_DEFUN(FPTOOLS_PROG_YACCY,
[AC_PROG_YACC
if test "$YACC" = "yacc"; then
AC_CACHE_CHECK([if it is an OK yacc], ac_cv_prog_yacc,
AC_SUBST(YaccCmd)
])
-dnl Checking for ar and its arguments + whether we need ranlib.
-#
-# ArCmd and RANLIB are AC_SUBST'ed
-#
-AC_DEFUN(AC_PROG_AR_AND_RANLIB,
+dnl *** Checking for ar and its arguments + whether we need ranlib.
+dnl
+dnl ArCmd, ArSupportsInput and RANLIB are AC_SUBST'ed
+dnl On Digital UNIX, we test for the -Z (compress) and
+dnl -input (take list of files from external file) flags.
+dnl
+AC_DEFUN(FPTOOLS_PROG_AR_AND_RANLIB,
[AC_PATH_PROG(ArCmd,ar)
if test -z "$ArCmd"; then
echo "You don't seem to have ar in your PATH...I have no idea how to make a library"
exit 1;
fi
-if $ArCmd clqs conftest.a >/dev/null 2>/dev/null; then
+if $ArCmd clqsZ conftest.a >/dev/null 2>/dev/null; then
+ ArCmd="$ArCmd clqsZ"
+ NeedRanLib=''
+elif $ArCmd clqs conftest.a >/dev/null 2>/dev/null; then
ArCmd="$ArCmd clqs"
NeedRanLib=''
elif $ArCmd cqs conftest.a >/dev/null 2>/dev/null; then
rm -rf conftest*
test -n "$ArCmd" && test -n "$verbose" && echo " setting ArCmd to $ArCmd"
AC_SUBST(ArCmd)
+if $ArCmd conftest.a -input /dev/null >/dev/null 2>/dev/null; then
+ ArSupportsInput='-input'
+else
+ ArSupportsInput=''
+fi
+rm -rf conftest*
+test -n "$ArSupportsInput" && test -n "$verbose" && echo " setting ArSupportsInput to $ArSupportsInput"
+AC_SUBST(ArSupportsInput)
if test -z "$NeedRanLib"; then
RANLIB=':'
test -n "$verbose" && echo " setting RANLIB to $RANLIB"
fi
])
-#
+dnl
dnl AC_SHEBANG_PERL - can we she-bang perl?
-#
-AC_DEFUN(AC_SHEBANG_PERL,
-[AC_CACHE_CHECK([if your perl works in shell scripts], ac_cv_shebang_perl,
+dnl
+AC_DEFUN(FPTOOLS_SHEBANG_PERL,
+[AC_CACHE_CHECK([if your perl works in shell scripts], fptools_cv_shebang_perl,
[echo "#!$PerlCmd"'
exit $1;
' > conftest
chmod u+x conftest
(SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null)
if test $? -ne 69; then
- ac_cv_shebang_perl=yes
+ fptools_cv_shebang_perl=yes
else
- ac_cv_shebang_perl=no
+ fptools_cv_shebang_perl=no
fi
rm -f conftest
])])
-#
-# Extra testing of the result AC_PROG_CC, testing the gcc version no.
-# *Must* be called after AC_PROG_CC
-#
-AC_DEFUN(AC_HAVE_GCC,
-[AC_CACHE_CHECK([whether you have an ok gcc], ac_cv_have_gcc,
+dnl
+dnl Extra testing of the result AC_PROG_CC, testing the gcc version no.
+dnl *Must* be called after AC_PROG_CC
+dnl
+AC_DEFUN(FPTOOLS_HAVE_GCC,
+[AC_CACHE_CHECK([whether you have an ok gcc], fptools_cv_have_gcc,
[if test -z "$GCC"; then
echo ''
echo "You would be better off with gcc"
echo "Perhaps it is already installed, but not in your PATH?"
- ac_cv_have_gcc='no'
+ fptools_cv_have_gcc='no'
else
changequote(, )dnl
cmd_string="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [^0-9]*\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/expr 20 \\\< \1 \\\* 10 + \2/g' `"
echo "I'm not sure if your version of gcc will work,"
echo "but it's worth a shot, eh?"
fi
- ac_cv_have_gcc='yes'
+ fptools_cv_have_gcc='yes'
fi
])
-HaveGcc=`echo $ac_cv_have_gcc | sed 'y/yesno/YESNO/'`
+HaveGcc=`echo $fptools_cv_have_gcc | sed 'y/yesno/YESNO/'`
AC_SUBST(HaveGcc)
])
-#
-# AC_PROG_GNUCPP gathers the path to the cpp that the
-# gcc driver calls upon.
-#
-# Substitutes: GNUCPP and RAWCPP (latter is 'GNUCPP -traditional')
-#
-AC_DEFUN(AC_PROG_GNUCPP,
-[AC_CACHE_CHECK([how to invoke GNU cpp directly], ac_cv_gnu_cpp,
-[if test "$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";' > conftest.pl
- ac_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
- ac_cv_gnu_cpp = $CPP
- fi
-])
-GNUCPP=$ac_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 5" conftest.out >/dev/null 2>&1; then
+ :
+else
+ 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_NOCACHE_CHECK prints a message, then sets the
+dnl values of the second argument to the result of running
+dnl the commands given by the third. It does not cache its
+dnl result, so it is suitable for checks which should be
+dnl run every time.
+dnl
+AC_DEFUN(FPTOOLS_NOCACHE_CHECK,
+[AC_MSG_CHECKING([$1])
+ $3
+ AC_MSG_RESULT([$][$2])
])
+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 $GHC.
+dnl [original version pinched from c2hs]
+dnl
+AC_DEFUN(FPTOOLS_GHC_VERSION,
+[FPTOOLS_NOCACHE_CHECK([version of ghc], [fptools_version_of_ghc],
+[${WithGhc-ghc} --version > conftestghc 2>&1
+ cat conftestghc >&AC_FD_CC
+#Useless Use Of cat award...
+ fptools_version_of_ghc=`cat conftestghc | sed -n -e 's/, patchlevel *\([[0-9]]\)/.\1/;s/.* version \([[0-9]][[0-9.]]*\).*/\1/p'`
+ rm -fr conftest*
+ if test "[$]fptools_version_of_ghc" = ""
+ then
+ fptools_version_of_ghc='unknown'
+ fi
+fptools_version_of_ghc[_major]=`echo [$]fptools_version_of_ghc | sed -e 's/^\([[0-9]]\).*/\1/'`
+fptools_version_of_ghc[_minor]=`echo [$]fptools_version_of_ghc | sed -e 's/^[[0-9]]\.\([[0-9]]*\).*/\1/'`
+fptools_version_of_ghc[_pl]=`echo [$]fptools_version_of_ghc | sed -n -e 's/^[[0-9]]\.[[0-9]]*\.\([[0-9]]*\)/\1/p'`
#
-# Small feature test for perl version. Assumes PerlCmd
-# contains path to perl binary
+if test "[$]fptools_version_of_ghc[_pl]" = ""
+then
+ fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor]"
+ fptools_version_of_ghc[_pl]="0"
+else
+ fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor].[$]fptools_version_of_ghc[_pl]"
+fi
#
-AC_DEFUN(AC_CHECK_PERL_VERSION,
-[$PerlCmd -v >conftest.out 2>&1
-if grep "version 4" conftest.out >/dev/null 2>&1; then
- if grep "Patch level: 35" conftest.out >/dev/null 2>&1; then
- echo "
-************************************************************************
-Uh-oh...looks like you have Perl 4.035.
-
-Perl version 4.035 has a bug to do with recursion that will bite if
-you run the lit2texi script, when making Info files from
-literate files of various sorts. Either use perl5, the last version of perl4
-(4.036), or an older version (e.g., perl 4.019). Failing that, don't create
-any Info files :-)
-************************************************************************
-"
- fi
+ifelse($#, [1], [dnl
+[$1]="[$]fptools_version_of_ghc[_all]"
+], $#, [2], [dnl
+[$1]="[$]fptools_version_of_ghc[_major]"
+[$2]="[$]fptools_version_of_ghc[_minor]"
+], $#, [3], [dnl
+[$1]="[$]fptools_version_of_ghc[_major]"
+[$2]="[$]fptools_version_of_ghc[_minor]"
+[$3]="[$]fptools_version_of_ghc[_pl]"
+], $#, [4], [dnl
+[$1]="[$]fptools_version_of_ghc[_all]"
+[$2]="[$]fptools_version_of_ghc[_major]"
+[$3]="[$]fptools_version_of_ghc[_minor]"
+[$4]="[$]fptools_version_of_ghc[_pl]"
+])
+])
+])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)
+
+dnl FPTOOLS_CHECK_ALIGNMENT(TYPE)
+AC_DEFUN(FPTOOLS_CHECK_ALIGNMENT,
+[changequote(<<, >>)dnl
+dnl The name to #define.
+define(<<AC_TYPE_NAME>>, translit(alignment_$1, [a-z *], [A-Z_P]))dnl
+dnl The cache variable name.
+define(<<AC_CV_NAME>>, translit(ac_cv_alignment_$1, [ *], [_p]))dnl
+dnl The name of the corresponding size.
+define(<<AC_CV_SIZEOF_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl
+changequote([, ])dnl
+AC_MSG_CHECKING(alignment of $1)
+AC_CACHE_VAL(AC_CV_NAME,
+[AC_TRY_RUN([
+#include <stdio.h>
+#if HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+#ifndef offsetof
+#define offsetof(ty,field) ((size_t)((char *)&((ty *)0)->field - (char *)(ty *)0))
+#endif
+int
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d", offsetof(struct { char c; $1 ty;},ty));
+ exit(0);
+}],
+AC_CV_NAME=`cat conftestval`,
+AC_CV_NAME=$AC_CV_SIZEOF_NAME,
+AC_CV_NAME=$AC_CV_SIZEOF_NAME)])
+AC_MSG_RESULT($AC_CV_NAME)
+AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME)
+AC_PROVIDE($AC_TYPE_NAME)
+undefine([AC_TYPE_NAME])dnl
+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(<<AC_TYPE_NAME>>, translit(htype_$1, [a-z *], [A-Z_P]))dnl
+dnl The cache variable name.
+define(<<AC_CV_NAME>>, 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 <stdio.h>
+#include <stddef.h>
+#ifdef HAVE_SIGNAL_H
+#include <signal.h>
+#endif
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#ifdef HAVE_GL_GL_H
+#include <GL/gl.h>
+#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++)
+dnl
+dnl If the C compiler supports `long long' types,
+dnl define `HAVE_LONG_LONG'.
+dnl
+AC_DEFUN(FPTOOLS_C_LONG_LONG,
+[
+AC_REQUIRE([AC_PROG_CC])
+AC_MSG_CHECKING(whether ${CC} supports long long types)
+AC_CACHE_VAL(fptools_cv_have_long_long,
+[
+AC_LANG_SAVE
+AC_LANG_C
+AC_TRY_COMPILE(,[long long a;],
+fptools_cv_have_long_long=yes,
+fptools_cv_have_long_long=no)
+AC_LANG_RESTORE
+])
+AC_MSG_RESULT($fptools_cv_have_long_long)
+if test "$fptools_cv_have_long_long" = yes; then
+AC_DEFINE(HAVE_LONG_LONG)
+fi
+])
+
+dnl ** Obtain the value of a C constant.
+dnl The value will be `(-1)' if the constant is undefined.
+dnl
+dnl This is set up so that the argument can be a shell variable.
+dnl
+AC_DEFUN(FPTOOLS_CHECK_CCONST,
+[
+eval "def_name=CCONST_$1"
+eval "cv_name=ac_cv_cconst_$1"
+AC_MSG_CHECKING(value of $1)
+AC_CACHE_VAL($cv_name,
+[AC_TRY_RUN([#include <stdio.h>
+#include <errno.h>
+main()
+{
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", $1);
+ exit(0);
+}],
+eval "$cv_name=`cat conftestval`",
+eval "$cv_name=-1",
+eval "$cv_name=-1")])dnl
+eval "fptools_check_cconst_result=`echo '$'{$cv_name}`"
+AC_MSG_RESULT($fptools_check_cconst_result)
+AC_DEFINE_UNQUOTED($def_name, $fptools_check_cconst_result)
+unset fptools_check_cconst_result
+])
+
+dnl ** Invoke AC_CHECK_CCONST on each argument (which have to separate with
+dnl spaces)
+dnl
+AC_DEFUN(FPTOOLS_CHECK_CCONSTS,
+[for ac_const_name in $1
+do
+FPTOOLS_CHECK_CCONST($ac_const_name)dnl
+done
+])
+
+
+dnl *** Can we open files in binary mode? ***
+dnl
+AC_DEFUN(FPTOOLS_O_BINARY,
+[
+AC_REQUIRE([AC_PROG_CC])
+AC_MSG_CHECKING(whether we can open files in binary mode)
+AC_CACHE_VAL(fptools_cv_have_o_binary,
+[
+AC_LANG_SAVE
+AC_LANG_C
+AC_TRY_COMPILE(,
+[#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+int x = O_BINARY;],
+fptools_cv_have_o_binary=yes,
+fptools_cv_have_o_binary=no)
+AC_LANG_RESTORE
+])
+AC_MSG_RESULT($fptools_cv_have_o_binary)
+if test "$fptools_cv_have_o_binary" = yes; then
+AC_DEFINE(HAVE_O_BINARY)
+fi
+])
+
+dnl *** Which one comes first, .text or .data? ***
+dnl
+AC_DEFUN(FPTOOLS_CODE_BEFORE_DATA,
+[AC_CACHE_CHECK([if code section appears before data], fptools_cv_code_bef_data,
+[AC_TRY_RUN([
+int f() { return 1; }
+int i;
+int main() { return ((char*)&f > (char*)&i); }
+
+],
+fptools_cv_code_bef_data=yes, fptools_cv_code_bef_data=no,false)])
+if test "$fptools_cv_code_bef_data" = yes; then
+ AC_DEFINE(CODE_BEFORE_DATA)
+fi
+])
+
+dnl *** Helper function **
+dnl
+AC_DEFUN(FPTOOLS_IN_SCOPE,
+[AC_TRY_LINK([extern char* $1;],[return (int)&$2], $3=yes, $3=no)
+])
+
+dnl *** What's the end-of-text-section marker called? ***
+dnl
+AC_DEFUN([FPTOOLS_END_TEXT_SECTION],
+[AC_CACHE_CHECK([for end of text section marker],
+ [fptools_cv_end_of_text],
+ [fptools_cv_end_of_text=""
+ not_done=1
+ for i in data_start _data_start etext _etext __etext; do
+ FPTOOLS_IN_SCOPE($i,$i,fptools_end_of_text)
+ if test "$fptools_end_of_text" = yes; then
+ fptools_cv_end_of_text=$i
+ not_done=0
+ break
+ fi
+ done
+ if test "$not_done" = 1; then
+ FPTOOLS_IN_SCOPE(etext asm("etext"),etext,fptools_end_of_text)
+ if test "$fptools_end_of_text" = yes; then
+ fptools_cv_end_of_text="etext"
+ fi
+ fi])
+ if test -n "$fptools_cv_end_of_text"; then
+ AC_DEFINE_UNQUOTED([TEXT_SECTION_END_MARKER], $fptools_cv_end_of_text)
+ else
+ AC_DEFINE_UNQUOTED([TEXT_SECTION_END_MARKER], dunno_end_of_text)
+ fi
+ AC_CACHE_CHECK([for end of text section marker declaration],
+ [fptools_cv_end_of_text_decl],
+ [fptools_cv_end_of_text_decl=""
+ not_done=1
+ for i in data_start _data_start etext _etext __etext; do
+ FPTOOLS_IN_SCOPE($i,$i,fptools_end_of_text_decl)
+ if test "$fptools_end_of_text_decl" = yes; then
+ fptools_cv_end_of_text_decl=$i
+ not_done=0
+ break
+ fi
+ done
+ if test "$not_done" = 1; then
+ FPTOOLS_IN_SCOPE(etext asm("etext"),etext,fptools_end_of_text_decl)
+ if test "$fptools_end_of_text_decl" = yes; then
+ fptools_cv_end_of_text_decl="etext asm(\"etext\")"
+ fi
+ fi])
+ if test -n "$fptools_cv_end_of_text_decl"; then
+ AC_DEFINE_UNQUOTED([TEXT_SECTION_END_MARKER_DECL], $fptools_cv_end_of_text_decl)
+ else
+ AC_DEFINE_UNQUOTED([TEXT_SECTION_END_MARKER_DECL], dunno_end_of_text_decl)
+ fi
+])
+
+dnl *** What's the end-of-data-section marker called? ***
+dnl
+AC_DEFUN([FPTOOLS_END_DATA_SECTION],
+[AC_CACHE_CHECK([for end of data section marker],
+ [fptools_cv_end_of_data],
+ [fptools_cv_end_of_data=""
+ not_done=1
+ for i in end _end __end; do
+ FPTOOLS_IN_SCOPE($i,$i,fptools_end_of_data)
+ if test "$fptools_end_of_data" = yes; then
+ fptools_cv_end_of_data=$i
+ not_done=0
+ break
+ fi
+ done
+ if test "$not_done" = 1; then
+ FPTOOLS_IN_SCOPE(end asm("end"),end,fptools_end_of_data)
+ if test "$fptools_end_of_data" = yes; then
+ fptools_cv_end_of_data="end"
+ fi
+ fi])
+ if test -n "$fptools_cv_end_of_data"; then
+ AC_DEFINE_UNQUOTED([DATA_SECTION_END_MARKER], $fptools_cv_end_of_data)
+ else
+ AC_DEFINE_UNQUOTED([DATA_SECTION_END_MARKER], dunno_end_of_data)
+ fi
+ AC_CACHE_CHECK([for end of data section marker declaration],
+ [fptools_cv_end_of_data_decl],
+ [fptools_cv_end_of_data_decl=""
+ not_done=1
+ for i in end _end __end; do
+ FPTOOLS_IN_SCOPE($i,$i,fptools_end_of_data_decl)
+ if test "$fptools_end_of_data_decl" = yes; then
+ fptools_cv_end_of_data_decl=$i
+ not_done=0
+ break
+ fi
+ done
+ if test "$not_done" = 1; then
+ FPTOOLS_IN_SCOPE(end asm("end"),end,fptools_end_of_data_decl)
+ if test "$fptools_end_of_data_decl" = yes; then
+ fptools_cv_end_of_data_decl="end asm(\"end\")"
+ fi
+ fi])
+ if test -n "$fptools_cv_end_of_data_decl"; then
+ AC_DEFINE_UNQUOTED([DATA_SECTION_END_MARKER_DECL], $fptools_cv_end_of_data_decl)
+ else
+ AC_DEFINE_UNQUOTED([DATA_SECTION_END_MARKER_DECL], dunno_end_of_data_decl)
+ fi
+])
+
+
+dnl Based on AC_TRY_LINK - run iftrue if links cleanly with no warning
+
+dnl FPTOOLS_TRY_LINK_NOWARN(flags,main?,iftrue,iffalse)
+
+AC_DEFUN(FPTOOLS_TRY_LINK_NOWARN,
+[
+ac_save_LIBS="$LIBS"
+LIBS=[$1];
+cat > conftest.$ac_ext <<EOF
+dnl This sometimes fails to find confdefs.h, for some reason.
+dnl [#]line __oline__ "[$]0"
+[#]line __oline__ "configure"
+#include "confdefs.h"
+[$2]
+int t() { return 0; }
+EOF
+if AC_TRY_EVAL(ac_link); then
+ ifelse([$3], , :, [
+ LIBS="$ac_save_LIBS"
+ rm -rf conftest*
+ $3])
+ ifelse([$4], , , [else
+ LIBS="$ac_save_LIBS"
+ rm -rf conftest*
+ $4
+])dnl
+fi
+rm -f conftest*
+]
+)
+
+dnl Loosely based on AC_CHECK_LIB in acgeneral.m4 in autoconf distribution
+
+dnl FPTOOLS_CHECK_FLAG_NOWARN(NAME, FLAG, CODE, iftrue, iffalse)
+
+AC_DEFUN(FPTOOLS_CHECK_FLAG_NOWARN,
+[AC_MSG_CHECKING([for $1])
+ AC_CACHE_VAL(ac_cv_flag_$1,
+ [FPTOOLS_TRY_LINK_NOWARN("$2", [main() { $3; exit(0); } ],
+ eval "ac_cv_flag_$1=yes",
+ eval "ac_cv_flag_$1=no"
+ )]
+ )
+if eval "test \"`echo '$ac_cv_flag_'$1`\" = yes"; then
+ AC_MSG_RESULT(yes)
+ LIBS="$2 $LIBS"
+ $4
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
+ AC_MSG_RESULT(no)
+ $5
fi
-rm -fr conftest*
+])
+
+dnl FPTOOLS_CHECK_LIB_NOWARN(LIBRARY, FUNCTION)
+
+AC_DEFUN(FPTOOLS_CHECK_LIB_NOWARN,
+[FPTOOLS_CHECK_FLAG_NOWARN([function_$2],[],[extern char $2(); $2();],
+[changequote(, )dnl
+ ac_tr_lib=HAVE_LIB`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ changequote([, ])dnl
+ AC_DEFINE_UNQUOTED($ac_tr_lib)
+],
+[FPTOOLS_CHECK_FLAG_NOWARN([library_$1],[-l$1],[extern char $2(); $2();],
+[changequote(, )dnl
+ ac_tr_lib=HAVE_LIB`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ changequote([, ])dnl
+ AC_DEFINE_UNQUOTED($ac_tr_lib)
+],
+[]
+)])]
+)
+
+dnl check for prototypes
+dnl
+AC_DEFUN([AC_C_PROTOTYPES],
+[AC_CACHE_CHECK([prototypes], ac_cv_prototypes,
+[AC_TRY_COMPILE([
+void foo(int);
+void foo(i)
+int i; {
+return;
+}
+],
+[int i;],
+ac_cv_prototypes=yes,
+ac_cv_prototypes=no)])
+if test "$ac_cv_prototypes" = yes; then
+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
+<!DOCTYPE Article PUBLIC "-//OASIS//DTD DocBook V3.1//EN">
+<Article>
+<ArtHeader>
+<Title>Test</Title>
+<Author><OtherName>Test</OtherName></Author>
+<Address>Test</Address>
+<PubDate>Test</PubDate>
+</ArtHeader>
+<Sect1><Title>Test</Title>
+<Para>
+Test.
+</Para>
+</Sect1>
+</Article>
+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 :
+ $5
+fi])
+
+dnl ####################### -*- Mode: M4 -*- ###########################
+dnl Copyright (C) 98, 1999 Matthew D. Langston <langston@SLAC.Stanford.EDU>
+dnl
+dnl This file is free software; you can redistribute it and/or modify it
+dnl under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This file is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this file; if not, write to:
+dnl
+dnl Free Software Foundation, Inc.
+dnl Suite 330
+dnl 59 Temple Place
+dnl Boston, MA 02111-1307, USA.
+dnl ####################################################################
+
+
+dnl @synopsis FPTOOLS_CHECK_LIBM
+dnl
+dnl Search for math library (typically -lm).
+dnl
+dnl The variable LIBM (which is not an output variable by default) is
+dnl set to a value which is suitable for use in a Makefile (for example,
+dnl in make's LOADLIBES macro) provided you AC_SUBST it first.
+dnl
+dnl @author Matthew D. Langston <langston@SLAC.Stanford.EDU>
+
+# FPTOOLS_CHECK_LIBM - check for math library
+AC_DEFUN(FPTOOLS_CHECK_LIBM,
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+LIBM=
+case "$host" in
+*-*-beos* | *-*-macosx*)
+ # 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 <langston@SLAC.Stanford.EDU>
+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 @author Matthew D. Langston <langston@SLAC.Stanford.EDU>
+
+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 <GL/gl.h>], glEnd, $GL_search_list, have_GL=yes, have_GL=no)
+ FPTOOLS_SEARCH_LIBS([#include <GL/glu.h>], gluNewQuadric, $GLU_search_list, have_GLU=yes, have_GLU=no)
+ FPTOOLS_SEARCH_LIBS([#include <GL/glx.h>], glXChooseVisual, $GLX_search_list, have_GLX=yes, have_GLX=no)
+ FPTOOLS_SEARCH_LIBS([#include <GL/glut.h>], glutMainLoop, glut glut32, have_glut=yes, have_glut=no)
+
+ if test -n "$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="$GL_save_CPPFLAGS"
+
+ AC_LANG_RESTORE
+])
+
+# LocalWords: fi
+
+dnl
+dnl acspecific.m4's defn of AC_PROG_LEX is a bit too permissive, as it
+dnl defaults to 'lex' if 'flex' isn't found (without checking whether
+dnl 'lex' is actually present along the user's PATH).
+dnl
+AC_DEFUN(AC_PROG_LEX_STRICT,
+[AC_CHECK_PROG(LEX, flex, flex)
+if test -z "$LEX"
+then
+ AC_CHECK_PROG(LEX,lex,lex)
+ test -z "$LEX" && AC_MSG_ERROR(['lex' or 'flex' is required to compile GHC.])
+fi
+])
+
+dnl
+dnl Check to see whether CC (gcc) supports a particular option.
+dnl
+AC_DEFUN(FPTOOLS_CC_FLAG,
+[
+AC_CACHE_CHECK([whether $CC accepts $1], [ac_cv_cc_$2],
+[save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $1"
+ AC_LANG_C
+ AC_TRY_COMPILE(,[int main(){return(0);}],
+ [ac_cv_cc_$2=yes],
+ [ac_cv_cc_$2=no])
+ CFLAGS="$save_CFLAGS"
+])
+if test "$ac_cv_cc_$2"x = "yesx"; then
+ $2=$extra_flag;
+else
+ $2=$extra_flag;
+fi;
])