# Extra autoconf macros for the Glasgow fptools # # To be a good autoconf citizen, names of local macros have prefixed with FP_ to # ensure we don't clash with any pre-supplied autoconf ones. # FP_EVAL_STDERR(COMMAND) # ----------------------- # Eval COMMAND, save its stderr (without lines resulting from shell tracing) # into the file conftest.err and the exit status in the variable fp_status. AC_DEFUN([FP_EVAL_STDERR], [{ (eval $1) 2>conftest.er1 fp_status=$? grep -v '^ *+' conftest.er1 >conftest.err rm -f conftest.er1 (exit $fp_status); }[]dnl ])# FP_EVAL_STDERR # FP_CHECK_FLAG(FLAG, [ACTION-IF-SUPPORTED], [ACTION-IF-NOT-SUPPORTED]) # --------------------------------------------------------------------- # Check to see whether the compiler for the current language supports a # particular option. # # Implementation note: When given an unkown option, GCC issues an warning on # stderr only, but returns an exit value of 0 nevertheless. Consequently we have # to check stderr *and* the exit value. # # Used by ghc. AC_DEFUN(FP_CHECK_FLAG, [AC_LANG_COMPILER_REQUIRE()dnl AC_LANG_CASE([C], [fp_compiler="$CC" m4_pushdef([fp_Flags], [CFLAGS])], [C++], [fp_compiler="$CXX" m4_pushdef([fp_Flags], [CXXFLAGS])], [Fortran 77], [fp_compiler="$F77" m4_pushdef([fp_Flags], [FFLAGS])]) m4_pushdef([fp_Cache], [fp_cv_[]fp_Flags[]AS_TR_SH([$1])])[]dnl AC_CACHE_CHECK([whether $fp_compiler accepts $1], [fp_Cache], [AC_LANG_CONFTEST([AC_LANG_PROGRAM()]) fp_save_flags="$fp_Flags" fp_Flags="$fp_Flags $1" fp_Cache=no if FP_EVAL_STDERR([$ac_compile conftest.$ac_ext]) >/dev/null; then test -s conftest.err || fp_Cache=yes fi fp_Flags="$fp_save_flags" rm -f conftest.err conftest.$ac_ext]) AS_IF([test $fp_Cache = yes], [$2], [$3])[]dnl m4_popdef([fp_Cache])[]dnl m4_popdef([fp_Flags])[]dnl ])# FP_CHECK_FLAG # FP_PROG_CONTEXT_DIFF # -------------------- # Figure out how to do context diffs. Sets the output variable ContextDiffCmd. # # Note: NeXTStep thinks diff'ing a file against itself is "trouble". # # Used by ghc, glafp-utils/ltx, and glafp-utils/runstdtest. AC_DEFUN([FP_PROG_CONTEXT_DIFF], [AC_CACHE_CHECK([for a working context diff], [fp_cv_context_diff], [echo foo > conftest1 echo foo > conftest2 fp_cv_context_diff=no for fp_var in '-C 1' '-c1' do if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then fp_cv_context_diff="diff $fp_var" break fi done]) if test x"$fp_cv_context_diff" = xno; then AC_MSG_ERROR([cannot figure out how to do context diffs]) fi AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff]) ])# FP_PROG_CONTEXT_DIFF # FP_DECL_ALTZONE # --------------- # Defines HAVE_DECL_ALTZONE to 1 if declared, 0 otherwise. # # Used by base package. AC_DEFUN([FP_DECL_ALTZONE], [AC_REQUIRE([AC_HEADER_TIME])dnl AC_CHECK_HEADERS([sys/time.h]) AC_CHECK_DECLS([altzone], [], [],[#if TIME_WITH_SYS_TIME # include # include #else # if HAVE_SYS_TIME_H # include # else # include # endif #endif]) ])# FP_DECL_ALTZONE # FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS) # -------------------------------------------------------- # Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for # compilation. Execute IF-FAILS when unable to determine the value. Works for # cross-compilation, too. # # Implementation note: We are lazy and use an internal autoconf macro, but it # is supported in autoconf versions 2.50 up to the actual 2.57, so there is # little risk. AC_DEFUN([FP_COMPUTE_INT], [_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl ])# FP_COMPUTE_INT # FP_CHECK_ALIGNMENT(TYPE, [IGNORED], [INCLUDES = DEFAULT-INCLUDES]) # ------------------------------------------------------------------ # A variation of AC_CHECK_SIZEOF for computing the alignment restrictions of a # given type. Defines ALIGNMENT_TYPE. AC_DEFUN([FP_CHECK_ALIGNMENT], [AS_LITERAL_IF([$1], [], [AC_FATAL([$0: requires literal arguments])])[]dnl AC_CHECK_TYPE([$1], [], [], [$3])[]dnl m4_pushdef([fp_Cache], [AS_TR_SH([fp_cv_alignment_$1])])[]dnl AC_CACHE_CHECK([alignment of $1], [fp_Cache], [if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then FP_COMPUTE_INT([(long) (&((struct { char c; $1 ty; } *)0)->ty)], [fp_Cache], [AC_INCLUDES_DEFAULT([$3])], [AC_MSG_ERROR([cannot compute alignment ($1) See `config.log' for more details.], [77])]) else fp_Cache=0 fi])[]dnl AC_DEFINE_UNQUOTED(AS_TR_CPP(alignment_$1), $fp_Cache, [The alignment of a `$1'.])[]dnl m4_popdef([fp_Cache])[]dnl ])# FP_CHECK_ALIGNMENT # FP_CHECK_CONST(EXPRESSION, [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1]) # ------------------------------------------------------------------------------- # Defines CONST_EXPRESSION to the value of the compile-time EXPRESSION, using # INCLUDES. If the value cannot be determined, use VALUE-IF-FAIL. AC_DEFUN([FP_CHECK_CONST], [AS_VAR_PUSHDEF([fp_Cache], [fp_cv_const_$1])[]dnl AC_CACHE_CHECK([value of $1], fp_Cache, [FP_COMPUTE_INT([$1], fp_check_const_result, [AC_INCLUDES_DEFAULT([$2])], [fp_check_const_result=m4_default([$3], ['-1'])]) AS_VAR_SET(fp_Cache, [$fp_check_const_result])])[]dnl AC_DEFINE_UNQUOTED(AS_TR_CPP([CONST_$1]), AS_VAR_GET(fp_Cache), [The value of $1.])[]dnl AS_VAR_POPDEF([fp_Cache])[]dnl ])# FP_CHECK_CONST # FP_CHECK_CONSTS_TEMPLATE(EXPRESSION...) # --------------------------------------- # autoheader helper for FP_CHECK_CONSTS m4_define([FP_CHECK_CONSTS_TEMPLATE], [AC_FOREACH([fp_Const], [$1], [AH_TEMPLATE(AS_TR_CPP(CONST_[]fp_Const), [The value of ]fp_Const[.])])[]dnl ])# FP_CHECK_CONSTS_TEMPLATE # FP_CHECK_CONSTS(EXPRESSION..., [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1]) # ----------------------------------------------------------------------------------- # List version of FP_CHECK_CONST AC_DEFUN(FP_CHECK_CONSTS, [FP_CHECK_CONSTS_TEMPLATE([$1])dnl for fp_const_name in $1 do FP_CHECK_CONST([$fp_const_name], [$2], [$3]) done ])# FP_CHECK_CONSTS dnl ** check for leading underscores in symbol names 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 dnl Similarly on OpenBSD, but this test doesn't help. -- dons dnl AC_DEFUN(FPTOOLS_UNDERSCORE, [AC_CHECK_LIB(elf, nlist, LIBS="-lelf $LIBS")dnl 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 *openbsd*) # x86 openbsd is ELF from 3.4 >, meaning no leading uscore case $build in i386-*2\.[[0-9]] | i386-*3\.[[0-3]] ) fptools_cv_lead_uscore='yes' ;; *) fptools_cv_lead_uscore='no' ;; esac ;; 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 changequote(<<, >>)dnl << struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}}; struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}}; #endif main(argc, argv) int argc; char **argv; { #ifdef HAVE_NLIST_H 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); }], fptools_cv_lead_uscore=yes, fptools_cv_lead_uscore=no, fptools_cv_lead_uscore=NO) ;; esac); LeadingUnderscore=`echo $fptools_cv_lead_uscore | sed 'y/yesno/YESNO/'` AC_SUBST(LeadingUnderscore) case $LeadingUnderscore in YES) AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.]);; esac ]) # FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) # ---------------------------------------------------------------------------------- # Compare dotted version numbers VERSION1 and VERSION2 lexicographically according # to TEST (one of -eq, -ne, -lt, -le, -gt, or -ge). AC_DEFUN([FP_COMPARE_VERSIONS], [fp_version1=$1; fp_version2=$3 fp_save_IFS=$IFS; IFS='.' while test x"$fp_version1" != x || test x"$fp_version2" != x do set dummy $fp_version1; shift fp_num1="" test $[@%:@] = 0 || { fp_num1="[$]1"; shift; } test x"$fp_num1" = x && fp_num1="0" fp_version1="[$]*" set dummy $fp_version2; shift fp_num2="" test $[@%:@] = 0 || { fp_num2="[$]1"; shift; } test x"$fp_num2" = x && fp_num2="0" fp_version2="[$]*" test "$fp_num1" = "$fp_num2" || break; done IFS=$fp_save_IFS AS_IF([test "$fp_num1" $2 "$fp_num2"], [$4], [$5])[]dnl ])# FP_COMPARE_VERSIONS dnl dnl Check for GreenCard and version. dnl AC_DEFUN(FPTOOLS_GREENCARD, [ AC_PATH_PROG(GreenCardCmd,greencard) AC_CACHE_CHECK([for version of greencard], fptools_cv_greencard_version, changequote(, )dnl [if test x"$GreenCardCmd" != x; then fptools_cv_greencard_version="`$GreenCardCmd --version | grep 'version' | sed -e 's/greencard. version \([^ ]*\).*/\1/g'`" else fptools_cv_greencard_version="" fi changequote([, ])dnl ]) FP_COMPARE_VERSIONS([$fptools_cv_greencard_version],[-lt],[$1], [AC_MSG_ERROR([greencard version $1 or later is required (found '$fptools_cv_greencard_version')])])[]dnl GreenCardVersion=$fptools_cv_greencard_version AC_SUBST(GreenCardVersion) ]) dnl dnl Check for Happy and version. If we're building GHC, then we need dnl at least Happy version 1.14. 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 if test x"$UseSrcTreeHappy" = xYES; then HappyCmd=$SrcTreeHappyCmd else AC_PATH_PROG(HappyCmd,happy,$SrcTreeHappyCmd) fi AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version, changequote(, )dnl [if test x"$HappyCmd" = x"$SrcTreeHappyCmd" -a -e $srcdir/happy/mk/version.mk; 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'`" ; else fptools_cv_happy_version=""; fi; changequote([, ])dnl ]) if test -d $srcdir/ghc -a ! -f $srcdir/ghc/compiler/parser/Parser.hs; then FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.14], [AC_MSG_ERROR([Happy version 1.14 or later is required to compile GHC.])])[]dnl fi HappyVersion=$fptools_cv_happy_version; AC_SUBST(HappyVersion) ]) dnl dnl Check for Haddock and version. If there's no installed Haddock, we look dnl for a haddock source tree and point the build system at that instead. dnl AC_DEFUN(FPTOOLS_HADDOCK, [ if test -d $srcdir/haddock; then SrcTreeHaddockCmd=$hardtop/haddock/src/haddock-inplace fi if test x"$UseSrcTreeHaddock" = xYES; then HaddockCmd=$SrcTreeHaddockCmd else AC_PATH_PROG(HaddockCmd,haddock,$SrcTreeHaddockCmd) fi dnl Darn, I forgot to make Haddock print out its version number when dnl invoked with -v. We could try generating some HTML and grepping dnl through that to find the version number, but I think we'll make dnl do without it for now. ]) dnl dnl Check for Alex and version. If we're building GHC, then we need dnl at least Alex version 2.0. If there's no installed Alex, we look dnl for a alex source tree and point the build system at that instead. dnl AC_DEFUN(FPTOOLS_ALEX, [ if test -d $srcdir/alex; then SrcTreeAlexCmd=$hardtop/alex/src/alex-inplace fi if test x"$UseSrcTreeAlex" = xYES; then AlexCmd=$SrcTreeAlexCmd else AC_PATH_PROG(AlexCmd,alex,$SrcTreeAlexCmd) fi AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version, changequote(, )dnl [if test x"$AlexCmd" = x"$SrcTreeAlexCmd"; then fptools_cv_alex_version=`grep '^ProjectVersion[ ]*=' $srcdir/alex/mk/version.mk | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`; elif test x"$AlexCmd" != x; then fptools_cv_alex_version="`$AlexCmd -v | grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'`" ; else fptools_cv_alex_version=""; fi; changequote([, ])dnl ]) if test -d $srcdir/ghc -a ! -f $srcdir/ghc/compiler/parser/Lexer.hs; then FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[2.0], [AC_MSG_ERROR([Alex version 2.0 or later is required to compile GHC.])])[]dnl fi AlexVersion=$fptools_cv_alex_version; AC_SUBST(AlexVersion) ]) dnl dnl Check whether ld supports -x dnl AC_DEFUN(FPTOOLS_LD_X, [AC_CACHE_CHECK([whether ld understands -x], fptools_cv_ld_x, [ echo 'foo() {}' > conftest.c ${CC-cc} -c conftest.c if ${LdCmd} -r -x -o foo.o conftest.o; then fptools_cv_ld_x=yes else fptools_cv_ld_x=no fi rm -rf conftest.c conftest.o foo.o ]) if test "$fptools_cv_ld_x" = yes; then LdXFlag=-x else LdXFlag= fi AC_SUBST(LdXFlag) ]) # FP_PROG_AR # ---------- # Sets fp_prog_ar_raw to the full path of ar and fp_prog_ar to a non-Cygwin # version of it. Exits if no ar can be found AC_DEFUN([FP_PROG_AR], [AC_PATH_PROG([fp_prog_ar_raw], [ar]) if test -z "$fp_prog_ar_raw"; then AC_MSG_ERROR([cannot find ar in your PATH, no idea how to make a library]) fi fp_prog_ar=$fp_prog_ar_raw case $HostPlatform in *mingw32) if test x${OSTYPE} != xmsys; then fp_prog_ar="`cygpath -w ${fp_prog_ar_raw} | sed -e 's@\\\\@/@g'`" AC_MSG_NOTICE([normalized ar command to $fp_prog_ar]) fi ;; esac ])# FP_PROG_AR # FP_PROG_AR_IS_GNU # ----------------- # Sets fp_prog_ar_is_gnu to yes or no, depending on whether it is GNU ar or not. AC_DEFUN([FP_PROG_AR_IS_GNU], [AC_REQUIRE([FP_PROG_AR]) AC_CACHE_CHECK([whether $fp_prog_ar_raw is GNU ar], [fp_cv_prog_ar_is_gnu], [if $fp_prog_ar_raw --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then fp_cv_prog_ar_is_gnu=yes else fp_cv_prog_ar_is_gnu=no fi]) fp_prog_ar_is_gnu=$fp_cv_prog_ar_is_gnu ])# FP_PROG_AR_IS_GNU # FP_PROG_AR_ARGS # --------------- # Sets fp_prog_ar_args to the arguments for ar and the output variable ArCmd # to a non-Cygwin invocation of ar including these arguments. AC_DEFUN([FP_PROG_AR_ARGS], [AC_REQUIRE([FP_PROG_AR_IS_GNU]) AC_CACHE_CHECK([for ar arguments], [fp_cv_prog_ar_args], [ # GNU ar needs special treatment: it appears to have problems with # object files with the same name if you use the 's' modifier, but # simple 'ar q' works fine, and doesn't need a separate ranlib. if test $fp_prog_ar_is_gnu = yes; then fp_cv_prog_ar_args="q" else touch conftest.dummy for fp_var in clqsZ clqs cqs clq cq ; do rm -f conftest.a if $fp_prog_ar_raw $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null; then fp_cv_prog_ar_args=$fp_var break fi done rm -f conftest* if test -z "$fp_cv_prog_ar_args"; then AC_MSG_ERROR([cannot figure out how to use your $fp_prog_ar_raw]) fi fi]) fp_prog_ar_args=$fp_cv_prog_ar_args AC_SUBST([ArCmd], ["$fp_prog_ar $fp_prog_ar_args"]) ])# FP_PROG_AR_ARGS # FP_PROG_AR_NEEDS_RANLIB # ----------------------- # Sets the output variable RANLIB to "ranlib" if it is needed and found, # to ":" otherwise. AC_DEFUN([FP_PROG_AR_NEEDS_RANLIB], [AC_REQUIRE([FP_PROG_AR_IS_GNU]) AC_REQUIRE([FP_PROG_AR_ARGS]) AC_CACHE_CHECK([whether ranlib is needed], [fp_cv_prog_ar_needs_ranlib], [if test $fp_prog_ar_is_gnu = yes; then fp_cv_prog_ar_needs_ranlib=no elif echo $fp_prog_ar_args | grep "s" > /dev/null 2> /dev/null; then fp_cv_prog_ar_needs_ranlib=no else fp_cv_prog_ar_needs_ranlib=yes fi]) if test $fp_cv_prog_ar_needs_ranlib = yes; then AC_PROG_RANLIB else RANLIB=":" AC_SUBST([RANLIB]) fi ])# FP_PROG_AR_NEEDS_RANLIB # FP_PROG_AR_SUPPORTS_INPUT # ------------------------- # Sets the output variable ArSupportsInput to "-input" or "", depending on # whether ar supports -input flag is supported or not. AC_DEFUN([FP_PROG_AR_SUPPORTS_INPUT], [AC_REQUIRE([FP_PROG_AR_IS_GNU]) AC_REQUIRE([FP_PROG_AR_ARGS]) AC_CACHE_CHECK([whether $fp_prog_ar_raw supports -input], [fp_cv_prog_ar_supports_input], [fp_cv_prog_ar_supports_input=no if test $fp_prog_ar_is_gnu = no; then rm -f conftest* touch conftest.lst if $fp_prog_ar_raw $fp_prog_ar_args conftest.a -input conftest.lst > /dev/null 2> /dev/null; then fp_cv_prog_ar_supports_input=yes fi rm -f conftest* fi]) if test $fp_cv_prog_ar_supports_input = yes; then ArSupportsInput="-input" else ArSupportsInput="" fi AC_SUBST([ArSupportsInput]) ])# FP_PROG_AR_SUPPORTS_INPUT dnl dnl AC_SHEBANG_PERL - can we she-bang perl? dnl AC_DEFUN(FPTOOLS_SHEBANG_PERL, [AC_CACHE_CHECK([if your perl works in shell scripts], fptools_cv_shebang_perl, [echo "#!$PerlCmd"' exit $1; ' > conftest chmod u+x conftest (SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null) if test $? -ne 69; then fptools_cv_shebang_perl=yes else fptools_cv_shebang_perl=no fi rm -f conftest ])]) dnl dnl Extra testing of the result AC_PROG_CC, testing the gcc version no. dnl *Must* be called after AC_PROG_CC dnl AC_DEFUN(FPTOOLS_HAVE_GCC, [AC_CACHE_CHECK([whether you have an ok gcc], fptools_cv_have_gcc, [if test -z "$GCC"; then echo '' echo "You would be better off with gcc" echo "Perhaps it is already installed, but not in your PATH?" fptools_cv_have_gcc='no' else changequote(, )dnl gcc_version_str="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [^0-9]*\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1\.\2/g' `" changequote([, ])dnl fptools_cv_have_gcc='yes' FP_COMPARE_VERSIONS([$gcc_version_str], [-lt], [2.0], [fptools_cv_have_gcc='no' echo "" echo "your gcc version appears to be ..." $CC --version echo "gcc prior to 2.0 and have never worked with ghc." echo "we recommend 2.95.3, although versions back to 2.7.2 should be ok." AC_MSG_ERROR([gcc 1.X has never been supported])]) fi ]) HaveGcc=`echo $fptools_cv_have_gcc | sed 'y/yesno/YESNO/'` AC_SUBST(HaveGcc) GccVersion=`gcc --version | grep mingw | cut -f 3 -d ' '` AC_SUBST(GccVersion) ]) dnl dnl Some OSs (Mandrake Linux, in particular) configure GCC with dnl -momit-leaf-frame-pointer on by default. If this is the case, we dnl need to turn it off for mangling to work. The test is currently a bit dnl crude, using only the version number of gcc. dnl AC_DEFUN([FPTOOLS_GCC_NEEDS_NO_OMIT_LFPTR], [AC_CACHE_CHECK([whether gcc needs -mno-omit-leaf-frame-pointer], [fptools_cv_gcc_needs_no_omit_lfptr], [FP_COMPARE_VERSIONS([$gcc_version_str], [-ge], [3.2], [fptools_cv_gcc_needs_no_omit_lfptr=yes], [fptools_cv_gcc_needs_no_omit_lfptr=no])]) if test "$fptools_cv_gcc_needs_no_omit_lfptr" = "yes"; then AC_DEFINE([HAVE_GCC_MNO_OMIT_LFPTR], [1], [Define to 1 if gcc supports -mno-omit-leaf-frame-pointer.]) fi])# FPTOOLS_GCC_NEEDS_NO_OMIT_LFPTR dnl Small feature test for perl version. Assumes PerlCmd dnl contains path to perl binary dnl AC_DEFUN(FPTOOLS_CHECK_PERL_VERSION, [$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 "v5.8" 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 fi rm -fr conftest* ]) # FP_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR, # [VALUE-IF-NOT-FOUND], [PATH], [REJECT]) # ----------------------------------------------------- # HACK: A small wrapper around AC_CHECK_PROG, setting VARIABLE to the full path # of PROG-TO-CHECK-FOR when found. AC_DEFUN([FP_CHECK_PROG], [AC_CHECK_PROG([$1], [$2], [$as_dir/$ac_word$ac_exec_ext], [$3], [$4], [$5])][]dnl )# FP_CHECK_PROC # FP_PROG_FIND # ------------ # Find a non-WinDoze version of the "find" utility. AC_DEFUN([FP_PROG_FIND], [AC_PATH_PROG([fp_prog_find], [find]) echo foo > conftest.txt $fp_prog_find conftest.txt -print > conftest.out 2>&1 if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then # OK, looks like a real "find". FindCmd="$fp_prog_find" else # Found a poor WinDoze version of "find", ignore it. AC_MSG_WARN([$fp_prog_find looks like a non-*nix find, ignoring it]) FP_CHECK_PROG([FindCmd], [find], [], [], [$fp_prog_find]) fi rm -f conftest.txt conftest.out AC_SUBST([FindCmd])[]dnl ])# FP_PROG_FIND 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'` # 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 # 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 ** 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 define(<>, translit(fptools_cv_htype_sup_$1, [ *], [_p]))dnl changequote([, ])dnl AC_MSG_CHECKING(Haskell type for $1) AC_CACHE_VAL(AC_CV_NAME, [AC_CV_NAME_supported=yes fp_check_htype_save_cppflags="$CPPFLAGS" CPPFLAGS="$CPPFLAGS $X_CFLAGS" AC_TRY_RUN([#include #include #if HAVE_SYS_TYPES_H # include #endif #if HAVE_UNISTD_H # include #endif #if HAVE_SYS_STAT_H # include #endif #if HAVE_FCNTL_H # include #endif #if HAVE_SIGNAL_H # include #endif #if HAVE_TIME_H # include #endif #if HAVE_TERMIOS_H # include #endif #if HAVE_STRING_H # include #endif #if HAVE_CTYPE_H # include #endif #if defined(HAVE_GL_GL_H) # include #elif defined(HAVE_OPENGL_GL_H) # include #endif #if defined(HAVE_AL_ALC_H) # include #elif defined(HAVE_OPENAL_ALC_H) # include #endif #if HAVE_SYS_RESOURCE_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_supported=no], AC_CV_NAME=$2), ifelse([$3], , [AC_CV_NAME=NotReallyATypeCross; AC_CV_NAME_supported=no], AC_CV_NAME=$3))]) dnl CPPFLAGS="$fp_check_htype_save_cppflags" if test "$AC_CV_NAME_supported" = yes; then AC_MSG_RESULT($AC_CV_NAME) AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [Define to Haskell type for $1]) else AC_MSG_RESULT([not supported]) fi undefine([AC_TYPE_NAME])dnl undefine([AC_CV_NAME])dnl undefine([AC_CV_NAME_supported])dnl ]) # FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) # --------------------------------------------------------------------------------- # A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the # additional flexibility of specifying the PROLOGUE and BODY. AC_DEFUN([FP_CHECK_FUNC], [AS_VAR_PUSHDEF([fp_func], [fp_cv_func_$1])dnl AC_CACHE_CHECK([for $1], fp_func, [AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])], [AS_VAR_SET(fp_func, yes)], [AS_VAR_SET(fp_func, no)])]) AS_IF([test AS_VAR_GET(fp_func) = yes], [AC_DEFINE(AS_TR_CPP(HAVE_$1), [1], [Define to 1 if you have the `]$1[' function.]) $4], [$5])dnl AS_VAR_POPDEF([fp_func])dnl ])# FP_CHECK_FUNC # FP_GEN_DOCBOOK_XML # ------------------ # Generates a DocBook XML V4.2 document in conftest.xml. AC_DEFUN([FP_GEN_DOCBOOK_XML], [rm -f conftest.xml cat > conftest.xml << EOF A DocBook Test Document A Chapter Title This is a paragraph, referencing . Another Chapter Title This is another paragraph, referencing . EOF ]) # FP_GEN_DOCBOOK_XML # FP_PROG_XSLTPROC # ---------------- # Sets the output variable XsltprocCmd to the full path of the XSLT processor # xsltproc. XsltprocCmd is empty if xsltproc could not be found. AC_DEFUN([FP_PROG_XSLTPROC], [AC_PATH_PROG([XsltprocCmd], [xsltproc]) if test -z "$XsltprocCmd"; then AC_MSG_WARN([cannot find xsltproc in your PATH, you will not be able to build the documentation]) fi ])# FP_PROG_XSLTPROC # FP_DIR_DOCBOOK_XSL(XSL-DIRS) # ---------------------------- # Check which of the directories XSL-DIRS contains DocBook XSL stylesheets. The # output variable DIR_DOCBOOK_XSL will contain the first usable directory or # will be empty if none could be found. AC_DEFUN([FP_DIR_DOCBOOK_XSL], [AC_REQUIRE([FP_PROG_XSLTPROC])dnl if test -n "$XsltprocCmd"; then AC_CACHE_CHECK([for DocBook XSL stylesheet directory], fp_cv_dir_docbook_xsl, [FP_GEN_DOCBOOK_XML fp_cv_dir_docbook_xsl=no for fp_var in $1; do if $XsltprocCmd ${fp_var}/html/docbook.xsl conftest.xml > /dev/null 2>&1; then fp_cv_dir_docbook_xsl=$fp_var break fi done rm -rf conftest*]) fi if test x"$fp_cv_dir_docbook_xsl" = xno; then AC_MSG_WARN([cannot find DocBook XSL stylesheets, you will not be able to build the documentation]) DIR_DOCBOOK_XSL= else DIR_DOCBOOK_XSL=$fp_cv_dir_docbook_xsl fi AC_SUBST([DIR_DOCBOOK_XSL]) ])# FP_DIR_DOCBOOK_XSL # FP_PROG_XMLLINT # ---------------- # Sets the output variable XmllintCmd to the full path of the XSLT processor # xmllint. XmllintCmd is empty if xmllint could not be found. AC_DEFUN([FP_PROG_XMLLINT], [AC_PATH_PROG([XmllintCmd], [xmllint]) if test -z "$XmllintCmd"; then AC_MSG_WARN([cannot find xmllint in your PATH, you will not be able to validate your documentation]) fi ])# FP_PROG_XMLLINT # FP_CHECK_DOCBOOK_DTD # -------------------- AC_DEFUN([FP_CHECK_DOCBOOK_DTD], [AC_REQUIRE([FP_PROG_XMLLINT])dnl if test -n "$XmllintCmd"; then AC_MSG_CHECKING([for DocBook DTD]) FP_GEN_DOCBOOK_XML if $XmllintCmd --valid --noout conftest.xml > /dev/null 2>&1; then AC_MSG_RESULT([ok]) else AC_MSG_RESULT([failed]) AC_MSG_WARN([cannot find a DTD for DocBook XML V4.2, you will not be able to validate your documentation]) AC_MSG_WARN([check your XML_CATALOG_FILES environment variable and/or /etc/xml/catalog]) fi rm -rf conftest* fi ])# FP_CHECK_DOCBOOK_DTD # FP_PROG_FO_PROCESSOR # -------------------- # Try to find an FO processor. PassiveTeX output is sometimes a bit strange, so # try FOP first. Furthermore, /usr/bin/fop is broken in SuSE 9.1, so try the # "real" fop.sh first. Sets the output variables FopCmd, XmltexCmd, DvipsCmd, # and PdfxmltexCmd. AC_DEFUN([FP_PROG_FO_PROCESSOR], [AC_PATH_PROGS([FopCmd], [fop.sh fop], [], [$PATH:/usr/share/fop]) AC_PATH_PROG([XmltexCmd], [xmltex]) AC_PATH_PROG([DvipsCmd], [dvips]) if test -z "$FopCmd"; then if test -z "$XmltexCmd"; then AC_MSG_WARN([cannot find an FO => DVI converter, you will not be able to build DVI or PostScript documentation]) else if test -z "$DvipsCmd"; then AC_MSG_WARN([cannot find a DVI => PS converter, you will not be able to build PostScript documentation]) fi fi AC_PATH_PROG([PdfxmltexCmd], [pdfxmltex]) if test -z "$PdfxmltexCmd"; then AC_MSG_WARN([cannot find an FO => PDF converter, you will not be able to build PDF documentation]) fi elif test -z "$XmltexCmd"; then AC_MSG_WARN([cannot find an FO => DVI converter, you will not be able to build DVI documentation]) fi ])# FP_PROG_FO_PROCESSOR # FP_CHECK_WIN32 # -------------- # If Windows is the target platform (e.g. MinGW/MSYS or Cygwin with # -mno-cygwin), the variable "is_win32" is set to "yes", otherwise (e.g. *nix # systems or plain Cygwin) it is set to "no". AC_DEFUN([FP_CHECK_WIN32], [AC_CACHE_CHECK([for Windows environment], [fp_cv_is_win32], [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ #if !_WIN32 syntax error; #endif ])], [fp_cv_is_win32=yes], [fp_cv_is_win32=no])]) is_win32="$fp_cv_is_win32"[]dnl ])# FP_CHECK_WIN32 # FP_PATH_X # --------- # Same as AC_PATH_X, but works even for broken Cygwins which try to include the # non-existant header when -mno-cygwin is used. AC_DEFUN([FP_PATH_X], [AC_REQUIRE([FP_CHECK_WIN32]) if test x"$is_win32" = xyes; then no_x=yes else AC_PATH_X fi ])# FP_PATH_X # FP_PATH_XTRA # ------------ # Same as AC_PATH_XTRA, but works even for broken Cygwins which try to include # the non-existant header when -mno-cygwin is used. AC_DEFUN([FP_PATH_XTRA], [AC_REQUIRE([FP_CHECK_WIN32]) if test x"$is_win32" = xyes; then no_x=yes else AC_PATH_XTRA fi ])# FP_PATH_XTRA # FP_CHECK_GL_HELPER(LIBNAME, LIBS, INCLUDES, FUNCTION-BODY) # ---------------------------------------------------------- # Try each library in LIBS to successfully link INCLUDES plus FUNCTION-BODY, # setting LIBNAME_CFLAGS and LIBNAME_LIBS to the corresponding values. Sets # no_LIBNAME to "yes" if no suitable library was found. (LIBNAME_CFLAGS0 # contains the value of LIBNAME_CFLAGS without CPPFLAGS, and LIBNAME_LIBS0 # contains the value of LIBNAME_LIBS without LDFLAGS, but these are only # used internally.) AC_DEFUN([FP_CHECK_GL_HELPER], [AC_CACHE_CHECK([for $1 library], [fp_cv_check_$1_lib], [fp_cv_check_$1_lib="no" fp_save_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS ${$1_CFLAGS}" fp_save_LIBS="$LIBS" for fp_try_lib in $2; do # transform "-lfoo" to "foo.lib" when using cl if test x"$CC" = xcl; then fp_try_lib=`echo $fp_try_lib | sed -e 's/^-l//' -e 's/$/.lib/'` fi LIBS="$fp_try_lib ${$1_LIBS} $fp_save_LIBS" AC_TRY_LINK([$3], [$4], [fp_cv_check_$1_lib="$fp_try_lib ${$1_LIBS}"; break]) done LIBS="$fp_save_LIBS" CPPFLAGS="$fp_save_CPPFLAGS"]) if test x"$fp_cv_check_$1_lib" = xno; then no_$1=yes $1_CFLAGS= $1_LIBS= else $1_CFLAGS0="${$1_CFLAGS}" $1_CFLAGS="$CPPFLAGS ${$1_CFLAGS0}" $1_LIBS0="$fp_cv_check_$1_lib" $1_LIBS="$LDFLAGS ${$1_LIBS0}" fi ])# FP_CHECK_GL_HELPER # FP_CHECK_GL # ----------- AC_DEFUN([FP_CHECK_GL], [AC_REQUIRE([FP_PATH_X]) AC_REQUIRE([AC_CANONICAL_SYSTEM]) AC_ARG_ENABLE([hopengl], [AC_HELP_STRING([--enable-hopengl], [build a Haskell binding for OpenGL (GL/GLU). On Mac OS X, use --enable-hopengl=x11 to use X11 instead of the "native" libraries. (default=no)])], [enable_opengl=$enableval], [enable_opengl=no]) if test x"$enable_opengl" = xno; then no_GL=yes else use_quartz_opengl=no case $target_os in darwin*) if test x"$enable_opengl" != xx11; then AC_DEFINE([USE_QUARTZ_OPENGL], [1], [Define to 1 if native OpenGL should be used on Mac OS X]) use_quartz_opengl=yes fi ;; esac if test x"$use_quartz_opengl" != xyes; then AC_CHECK_LIB([m], [atan], [GL_LIBS="-lm $GL_LIBS"]) if test x"$no_x" != xyes; then test -n "$x_includes" && GL_CFLAGS="-I$x_includes $GL_CFLAGS" test -n "$x_libraries" && GL_LIBS="-L$x_libraries -lX11 $GL_LIBS" fi FP_CHECK_GL_HELPER([GL], [-lGL -lopengl32], [@%:@include ], [glEnd()]) if test x"$no_GL" != xyes; then # Ugly: To get wglGetProcAddress on Windows, we have to link with # opengl32.dll, too, even when we are using Cygwin with X11. case "$GL_LIBS" in *-lopengl32*|*opengl32.lib*) ;; *) fp_save_LIBS="$LIBS" LIBS="$LIBS -lopengl32" AC_TRY_LINK([@%:@include ], [glEnd()], [GL_LIBS="$GL_LIBS -lopengl32"; GL_LIBS0="$GL_LIBS0 -lopengl32"]) LIBS="$fp_save_LIBS" ;; esac fi fi fi AC_SUBST([GL_CFLAGS]) AC_SUBST([GL_LIBS]) ])# FP_CHECK_GL # FP_CHECK_GLU # ------------ AC_DEFUN([FP_CHECK_GLU], [AC_REQUIRE([FP_CHECK_GL])dnl GLU_CFLAGS="$GL_CFLAGS0" GLU_LIBS="$GL_LIBS0" if test x"$enable_opengl" = xno; then no_GLU=yes elif test x"$use_quartz_opengl" != xyes; then FP_CHECK_GL_HELPER([GLU], [-lglu32 -lGLU], [@%:@include ], [gluNewQuadric()]) fi AC_SUBST([GLU_CFLAGS]) AC_SUBST([GLU_LIBS]) ])# FP_CHECK_GLU # FP_CHECK_GLUT # ------------- AC_DEFUN([FP_CHECK_GLUT], [AC_REQUIRE([FP_CHECK_GLU]) FP_PATH_XTRA if test x"$enable_opengl" = xno; then no_GLUT=yes elif test x"$use_quartz_opengl" != xyes; then GLUT_CFLAGS="$GLU_CFLAGS0" GLUT_LIBS="$GLU_LIBS0" if test x"$no_x" != xyes; then GLUT_LIBS="$X_PRE_LIBS -lXmu -lXi $X_EXTRA_LIBS $GLUT_LIBS" fi AC_CHECK_HEADERS([windows.h GL/glut.h]) # Note 1: On Cygwin with X11, GL/GLU functions use the "normal" calling # convention, but GLUT functions use stdcall. To get this right, it is # necessary to include first. # Note 2: MinGW/MSYS comes without a GLUT header, so we use Cygwin's one in # that case. FP_CHECK_GL_HELPER([GLUT], [-lglut32 -lglut], [ #if HAVE_WINDOWS_H #include #endif #if HAVE_GL_GLUT_H #include #else #include "glut_local.h" #endif ], [glutMainLoop()]) fi AC_SUBST([GLUT_CFLAGS]) AC_SUBST([GLUT_LIBS]) ])# FP_CHECK_GLUT dnl @synopsis FP_EMPTY_STRUCTS dnl dnl Check whether empty structs is accepted by CC. dnl AC_DEFUN(FP_EMPTY_STRUCTS, [AC_CACHE_CHECK(empty struct support, fptools_cv_empty_structs, [AC_TRY_COMPILE([ typedef struct { /*empty*/ } StgFoo; ], [int i;], fptools_cv_empty_structs=yes, fptools_cv_empty_structs=no)]) if test "$fptools_cv_empty_structs" = yes; then AC_DEFINE([SUPPORTS_EMPTY_STRUCTS], [1], [Define to 1 if C compiler supports declaration of empty structure types.]) fi ]) dnl @synopsis FP_READDIR_EOF_ERRNO dnl dnl Check what readdir() sets 'errno' to upon reaching dnl end of directory; not setting it is the correct thing to do, dnl but mingw based versions have set it to ENOENT until recently dnl (summer 2004). dnl dnl AC_DEFUN(FP_READDIR_EOF_ERRNO, [AC_CACHE_CHECK([what readdir sets errno to upon EOF], fptools_cv_readdir_eof_errno, [AC_TRY_RUN([#include #include #include int main(argc, argv) int argc; char **argv; { FILE *f=fopen("conftestval", "w"); #if defined(__MINGW32__) int fd = mkdir("testdir"); #else int fd = mkdir("testdir", 0666); #endif DIR* dp; struct dirent* de; int err = 0; if (!f) return 1; if (fd == -1) { fprintf(stderr,"unable to create directory; quitting.\n"); return 1; } close(fd); dp = opendir("testdir"); if (!dp) { fprintf(stderr,"unable to browse directory; quitting.\n"); rmdir("testdir"); return 1; } /* the assumption here is that readdir() will only return NULL * due to reaching the end of the directory. */ while (de = readdir(dp)) { ; } err = errno; fprintf(f,"%d", err); fclose(f); closedir(de); rmdir("testdir"); return 0; }],fptools_cv_readdir_eof_errno=`cat conftestval`, fptools_cv_readdir_eof_errno=bogus, fptools_cv_readdir_eof_errno=0)]) dnl the cross value is somewhat bogus. AC_DEFINE_UNQUOTED([READDIR_ERRNO_EOF], [$fptools_cv_readdir_eof_errno], [readdir() sets errno to this upon EOF]) ]) dnl @synopsis FP_DIRENT_FLAT_LAYOUT dnl dnl Check whether 'struct dirent' (in dirent.h) has d_name defined dnl as being the final field in a struct, or a pointer to somewhere dnl else. The former is the standardly thing to do, but mingw defns dnl have for the longest time gone for the latter. They no longer do, dnl hence the need to configure test for this. dnl dnl AC_DEFUN(FP_DIRENT_FLAT_LAYOUT, [AC_CACHE_CHECK([if struct dirent layout is flat], fptools_cv_dirent_flat_layout, [AC_TRY_RUN([#include #include #include int main(argc, argv) int argc; char **argv; { struct dirent de; /* * Check whether d_name is defined as * struct dirent { .... ; char d_name[..]; } * or * struct dirent { .... ; char* d_name; } * * Returns 0 if the former. */ memset(&de,0,sizeof(struct dirent)); return ((int)de.d_name == 0); }],fptools_cv_dirent_flat_layout=yes, fptools_cv_dirent_flat_layout=no, fptools_cv_dirent_flat_layout=yes)]) dnl the cross value is somewhat bogus. if test "$fptools_cv_dirent_flat_layout" = yes; then AC_DEFINE([STRUCT_DIRENT_FLAT_LAYOUT], [1], [Define to 1 if struct dirent is a flat structure]) fi ]) # LocalWords: fi