1 # Extra autoconf macros for the Glasgow fptools
3 # To be a good autoconf citizen, names of local macros have prefixed with FP_ to
4 # ensure we don't clash with any pre-supplied autoconf ones.
7 # FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN
8 # ----------------------------------
9 # Little endian Arm on Linux with some ABIs has big endian word order
10 # in doubles. Define FLOAT_WORDS_BIGENDIAN if this is the case.
11 AC_DEFUN([FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN],
12 [AC_CACHE_CHECK([whether float word order is big endian], [fptools_cv_float_word_order_bigendian],
15 [#include <endian.h>],
16 [#if defined(__FLOAT_WORD_ORDER) && __FLOAT_WORD_ORDER == BIG_ENDIAN
19 not float word order big endian
22 [fptools_cv_float_word_order_bigendian=yes],
23 [fptools_cv_float_word_order_bigendian=no])
25 case $fptools_cv_float_word_order_bigendian in
27 AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
28 [Define to 1 if your processor stores words of floats with
29 the most significant byte first]) ;;
34 # FP_EVAL_STDERR(COMMAND)
35 # -----------------------
36 # Eval COMMAND, save its stderr (without lines resulting from shell tracing)
37 # into the file conftest.err and the exit status in the variable fp_status.
38 AC_DEFUN([FP_EVAL_STDERR],
39 [{ (eval $1) 2>conftest.er1
41 grep -v '^ *+' conftest.er1 >conftest.err
43 (exit $fp_status); }[]dnl
47 # FP_PROG_CONTEXT_DIFF
48 # --------------------
49 # Figure out how to do context diffs. Sets the output variable ContextDiffCmd.
51 # Note: NeXTStep thinks diff'ing a file against itself is "trouble".
53 # Used by ghc, glafp-utils/ltx, and glafp-utils/runstdtest.
54 AC_DEFUN([FP_PROG_CONTEXT_DIFF],
55 [AC_CACHE_CHECK([for a working context diff], [fp_cv_context_diff],
59 for fp_var in '-U 1' '-u1' '-C 1' '-c1'
61 if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then
62 fp_cv_context_diff="diff $fp_var"
66 if test x"$fp_cv_context_diff" = xno; then
67 AC_MSG_ERROR([cannot figure out how to do context diffs])
69 AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff])
70 ])# FP_PROG_CONTEXT_DIFF
73 # FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
74 # --------------------------------------------------------
75 # Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for
76 # compilation. Execute IF-FAILS when unable to determine the value. Works for
77 # cross-compilation, too.
79 # Implementation note: We are lazy and use an internal autoconf macro, but it
80 # is supported in autoconf versions 2.50 up to the actual 2.57, so there is
82 AC_DEFUN([FP_COMPUTE_INT],
83 [_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl
87 # FP_CHECK_ALIGNMENT(TYPE, [IGNORED], [INCLUDES = DEFAULT-INCLUDES])
88 # ------------------------------------------------------------------
89 # A variation of AC_CHECK_SIZEOF for computing the alignment restrictions of a
90 # given type. Defines ALIGNMENT_TYPE.
91 AC_DEFUN([FP_CHECK_ALIGNMENT],
92 [AS_LITERAL_IF([$1], [],
93 [AC_FATAL([$0: requires literal arguments])])[]dnl
94 AC_CHECK_TYPE([$1], [], [], [$3])[]dnl
95 m4_pushdef([fp_Cache], [AS_TR_SH([fp_cv_alignment_$1])])[]dnl
96 AC_CACHE_CHECK([alignment of $1], [fp_Cache],
97 [if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then
98 FP_COMPUTE_INT([(long) (&((struct { char c; $1 ty; } *)0)->ty)],
100 [AC_INCLUDES_DEFAULT([$3])],
101 [AC_MSG_ERROR([cannot compute alignment ($1)
102 See `config.log' for more details.], [77])])
106 AC_DEFINE_UNQUOTED(AS_TR_CPP(alignment_$1), $fp_Cache, [The alignment of a `$1'.])[]dnl
107 m4_popdef([fp_Cache])[]dnl
108 ])# FP_CHECK_ALIGNMENT
111 # FP_LEADING_UNDERSCORE
112 # ---------------------
113 # Test for determining whether symbol names have a leading underscore. We assume
114 # that they _haven't_ if anything goes wrong. Sets the output variable
115 # LeadingUnderscore to YES or NO and defines LEADING_UNDERSCORE correspondingly.
117 # Some nlist implementations seem to try to be compatible by ignoring a leading
118 # underscore sometimes (eg. FreeBSD). We therefore have to work around this by
119 # checking for *no* leading underscore first. Sigh. --SDM
121 # Similarly on OpenBSD, but this test doesn't help. -- dons
122 AC_DEFUN([FP_LEADING_UNDERSCORE],
123 [AC_CHECK_LIB([elf], [nlist], [LIBS="-lelf $LIBS"])
124 AC_CACHE_CHECK([leading underscore in symbol names], [fptools_cv_leading_underscore], [
125 # Hack!: nlist() under Digital UNIX insist on there being an _,
126 # but symbol table listings shows none. What is going on here?!?
128 # Another hack: cygwin doesn't come with nlist.h , so we hardwire
129 # the underscoredness of that "platform"
130 case $HostPlatform in
131 *openbsd*) # x86 openbsd is ELF from 3.4 >, meaning no leading uscore
133 i386-*2\.@<:@0-9@:>@ | i386-*3\.@<:@0-3@:>@ ) fptools_cv_leading_underscore=yes ;;
134 *) fptools_cv_leading_underscore=no ;;
136 alpha-dec-osf*) fptools_cv_leading_underscore=no;;
137 *cygwin32) fptools_cv_leading_underscore=yes;;
138 *mingw32) fptools_cv_leading_underscore=yes;;
140 # HACK: Apple doesn't seem to provide nlist in the 64-bit-libraries
141 x86_64-apple-darwin*) fptools_cv_leading_underscore=yes;;
143 *) AC_RUN_IFELSE([AC_LANG_SOURCE([[#ifdef HAVE_NLIST_H
145 struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
146 struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
154 if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
156 if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
160 }]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no])
163 AC_SUBST([LeadingUnderscore], [`echo $fptools_cv_leading_underscore | sed 'y/yesno/YESNO/'`])
164 if test x"$fptools_cv_leading_underscore" = xyes; then
165 AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.])
166 fi])# FP_LEADING_UNDERSCORE
169 # FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
170 # ----------------------------------------------------------------------------------
171 # Compare dotted version numbers VERSION1 and VERSION2 lexicographically according
172 # to TEST (one of -eq, -ne, -lt, -le, -gt, or -ge).
173 AC_DEFUN([FP_COMPARE_VERSIONS],
174 [fp_version1=$1; fp_version2=$3
175 fp_save_IFS=$IFS; IFS='.'
176 while test x"$fp_version1" != x || test x"$fp_version2" != x
179 set dummy $fp_version1; shift
181 test $[@%:@] = 0 || { fp_num1="[$]1"; shift; }
182 test x"$fp_num1" = x && fp_num1="0"
185 set dummy $fp_version2; shift
187 test $[@%:@] = 0 || { fp_num2="[$]1"; shift; }
188 test x"$fp_num2" = x && fp_num2="0"
191 test "$fp_num1" = "$fp_num2" || break;
194 AS_IF([test "$fp_num1" $2 "$fp_num2"], [$4], [$5])[]dnl
195 ])# FP_COMPARE_VERSIONS
199 dnl Check for GreenCard and version.
201 AC_DEFUN([FPTOOLS_GREENCARD],
203 AC_PATH_PROG(GreenCardCmd,greencard)
204 AC_CACHE_CHECK([for version of greencard], fptools_cv_greencard_version,
206 [if test x"$GreenCardCmd" != x; then
207 fptools_cv_greencard_version="`$GreenCardCmd --version |
208 grep 'version' | sed -e 's/greencard. version \([^ ]*\).*/\1/g'`"
210 fptools_cv_greencard_version=""
214 FP_COMPARE_VERSIONS([$fptools_cv_greencard_version],[-lt],[$1],
215 [AC_MSG_ERROR([greencard version $1 or later is required (found '$fptools_cv_greencard_version')])])[]dnl
216 GreenCardVersion=$fptools_cv_greencard_version
217 AC_SUBST(GreenCardVersion)
221 dnl Check for Happy and version. If we're building GHC, then we need
222 dnl at least Happy version 1.14. If there's no installed Happy, we look
223 dnl for a happy source tree and point the build system at that instead.
225 AC_DEFUN([FPTOOLS_HAPPY],
226 [AC_PATH_PROG(HappyCmd,happy,)
227 # Happy is passed to Cabal, so we need a native path
228 if test "x$HostPlatform" = "xi386-unknown-mingw32" && \
229 test "${OSTYPE}" != "msys" && \
230 test "${HappyCmd}" != ""
232 # Canonicalise to <drive>:/path/to/gcc
233 HappyCmd=`cygpath -m ${HappyCmd}`
234 AC_MSG_NOTICE([normalized happy command to $HappyCmd])
237 AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
239 [if test x"$HappyCmd" != x; then
240 fptools_cv_happy_version="`$HappyCmd -v |
241 grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
243 fptools_cv_happy_version="";
247 if test ! -f compiler/parser/Parser.hs || test ! -f compiler/main/ParsePkgConf.hs || test ! -f compiler/cmm/CmmParse.hs || test ! -f compiler/parser/ParserCore.hs
249 FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.15],
250 [AC_MSG_ERROR([Happy version 1.15 or later is required to compile GHC.])])[]dnl
252 HappyVersion=$fptools_cv_happy_version;
253 AC_SUBST(HappyVersion)
257 dnl Check for Alex and version. If we're building GHC, then we need
258 dnl at least Alex version 2.0.1.
260 AC_DEFUN([FPTOOLS_ALEX],
262 AC_PATH_PROG(AlexCmd,alex,)
263 # Alex is passed to Cabal, so we need a native path
264 if test "x$HostPlatform" = "xi386-unknown-mingw32" && \
265 test "${OSTYPE}" != "msys" && \
266 test "${AlexCmd}" != ""
268 # Canonicalise to <drive>:/path/to/gcc
269 AlexCmd=`cygpath -m ${AlexCmd}`
272 AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
274 [if test x"$AlexCmd" != x; then
275 fptools_cv_alex_version="`$AlexCmd -v |
276 grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'`" ;
278 fptools_cv_alex_version="";
282 if test ! -f compiler/cmm/CmmLex.hs || test ! -f compiler/parser/Lexer.hs
284 FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[2.0.1],
285 [AC_MSG_ERROR([Alex version 2.0.1 or later is required to compile GHC.])])[]dnl
287 AlexVersion=$fptools_cv_alex_version;
288 AC_SUBST(AlexVersion)
294 # Sets the output variable LdCmd to the (non-Cygwin version of the) full path
295 # of ld. Exits if no ld can be found
296 AC_DEFUN([FP_PROG_LD],
300 AC_PATH_PROG([fp_prog_ld_raw], [ld])
301 if test -z "$fp_prog_ld_raw"; then
302 AC_MSG_ERROR([cannot find ld in your PATH, no idea how to link])
304 LdCmd=$fp_prog_ld_raw
305 case $HostPlatform in
306 *mingw32) if test x${OSTYPE} != xmsys; then
307 LdCmd="`cygpath -w ${fp_prog_ld_raw} | sed -e 's@\\\\@/@g'`"
308 AC_MSG_NOTICE([normalized ld command to $LdCmd])
310 # Insist on >= ld-2.15.x, since earlier versions doesn't handle
311 # the generation of relocatable object files with large amounts
312 # of relocations correctly. (cf. HSbase.o splittage-hack)
313 fp_prog_ld_version=`${LdCmd} --version | sed -n '/GNU ld/p' | tr -cd 0-9 | cut -b1-3`
314 FP_COMPARE_VERSIONS([$fp_prog_ld_version],[-lt],[214],
315 [AC_MSG_ERROR([GNU ld version later than 2.14 required to compile GHC on Windows.])])[]dnl
327 # Sets the output variable LdXFlag to -x if ld supports this flag, otherwise the
328 # variable's value is empty.
329 AC_DEFUN([FP_PROG_LD_X],
330 [AC_REQUIRE([FP_PROG_LD])
331 AC_CACHE_CHECK([whether ld understands -x], [fp_cv_ld_x],
332 [echo 'foo() {}' > conftest.c
333 ${CC-cc} -c conftest.c
334 if ${LdCmd} -r -x -o conftest2.o conftest.o > /dev/null 2>&1; then
340 if test "$fp_cv_ld_x" = yes; then
351 # Sets the output variable LdIsGNULd to YES or NO, depending on whether it is
353 AC_DEFUN([FP_PROG_LD_IS_GNU],
354 [AC_REQUIRE([FP_PROG_LD])
355 AC_CACHE_CHECK([whether ld is GNU ld], [fp_cv_gnu_ld],
356 [if ${LdCmd} --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
361 AC_SUBST([LdIsGNULd], [`echo $fp_cv_gnu_ld | sed 'y/yesno/YESNO/'`])
362 ])# FP_PROG_LD_IS_GNU
367 # Sets fp_prog_ar_raw to the full path of ar and fp_prog_ar to a non-Cygwin
368 # version of it. Exits if no ar can be found
369 AC_DEFUN([FP_PROG_AR],
370 [AC_PATH_PROG([fp_prog_ar_raw], [ar])
371 if test -z "$fp_prog_ar_raw"; then
372 AC_MSG_ERROR([cannot find ar in your PATH, no idea how to make a library])
374 fp_prog_ar=$fp_prog_ar_raw
375 case $HostPlatform in
376 *mingw32) if test x${OSTYPE} != xmsys; then
377 fp_prog_ar="`cygpath -w ${fp_prog_ar_raw} | sed -e 's@\\\\@/@g'`"
378 AC_MSG_NOTICE([normalized ar command to $fp_prog_ar])
387 # Sets fp_prog_ar_is_gnu to yes or no, depending on whether it is GNU ar or not.
388 AC_DEFUN([FP_PROG_AR_IS_GNU],
389 [AC_REQUIRE([FP_PROG_AR])
390 AC_CACHE_CHECK([whether $fp_prog_ar_raw is GNU ar], [fp_cv_prog_ar_is_gnu],
391 [if $fp_prog_ar_raw --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
392 fp_cv_prog_ar_is_gnu=yes
394 fp_cv_prog_ar_is_gnu=no
396 fp_prog_ar_is_gnu=$fp_cv_prog_ar_is_gnu
397 ])# FP_PROG_AR_IS_GNU
402 # Sets fp_prog_ar_args to the arguments for ar and the output variable ArCmd
403 # to a non-Cygwin invocation of ar including these arguments.
404 AC_DEFUN([FP_PROG_AR_ARGS],
405 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
406 AC_CACHE_CHECK([for ar arguments], [fp_cv_prog_ar_args],
408 # GNU ar needs special treatment: it appears to have problems with
409 # object files with the same name if you use the 's' modifier, but
410 # simple 'ar q' works fine, and doesn't need a separate ranlib.
411 if test $fp_prog_ar_is_gnu = yes; then
412 fp_cv_prog_ar_args="q"
415 for fp_var in clqsZ clqs cqs clq cq ; do
417 if $fp_prog_ar_raw $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null; then
418 fp_cv_prog_ar_args=$fp_var
423 if test -z "$fp_cv_prog_ar_args"; then
424 AC_MSG_ERROR([cannot figure out how to use your $fp_prog_ar_raw])
427 fp_prog_ar_args=$fp_cv_prog_ar_args
428 AC_SUBST([ArCmd], ["$fp_prog_ar $fp_prog_ar_args"])
433 # FP_PROG_AR_NEEDS_RANLIB
434 # -----------------------
435 # Sets the output variable RANLIB to "ranlib" if it is needed and found,
437 AC_DEFUN([FP_PROG_AR_NEEDS_RANLIB],
438 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
439 AC_REQUIRE([FP_PROG_AR_ARGS])
440 AC_REQUIRE([AC_PROG_CC])
441 AC_CACHE_CHECK([whether ranlib is needed], [fp_cv_prog_ar_needs_ranlib],
442 [if test $fp_prog_ar_is_gnu = yes; then
443 fp_cv_prog_ar_needs_ranlib=no
444 elif echo $TargetPlatform | grep "^.*-apple-darwin$" > /dev/null 2> /dev/null; then
445 # It's quite tedious to check for Apple's crazy timestamps in .a files,
447 fp_cv_prog_ar_needs_ranlib=yes
448 elif echo $fp_prog_ar_args | grep "s" > /dev/null 2> /dev/null; then
449 fp_cv_prog_ar_needs_ranlib=no
451 fp_cv_prog_ar_needs_ranlib=yes
453 if test $fp_cv_prog_ar_needs_ranlib = yes; then
459 ])# FP_PROG_AR_NEEDS_RANLIB
462 # FP_PROG_AR_SUPPORTS_INPUT
463 # -------------------------
464 # Sets the output variable ArSupportsInput to "-input" or "", depending on
465 # whether ar supports -input flag is supported or not.
466 AC_DEFUN([FP_PROG_AR_SUPPORTS_INPUT],
467 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
468 AC_REQUIRE([FP_PROG_AR_ARGS])
469 AC_CACHE_CHECK([whether $fp_prog_ar_raw supports -input], [fp_cv_prog_ar_supports_input],
470 [fp_cv_prog_ar_supports_input=no
471 if test $fp_prog_ar_is_gnu = no; then
474 if FP_EVAL_STDERR([$fp_prog_ar_raw $fp_prog_ar_args conftest.a -input conftest.lst]) >/dev/null; then
475 test -s conftest.err || fp_cv_prog_ar_supports_input=yes
479 if test $fp_cv_prog_ar_supports_input = yes; then
480 ArSupportsInput="-input"
484 AC_SUBST([ArSupportsInput])
485 ])# FP_PROG_AR_SUPPORTS_INPUT
489 dnl AC_SHEBANG_PERL - can we she-bang perl?
491 AC_DEFUN([FPTOOLS_SHEBANG_PERL],
492 [AC_CACHE_CHECK([if your perl works in shell scripts], fptools_cv_shebang_perl,
497 (SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null)
498 if test $? -ne 69; then
499 fptools_cv_shebang_perl=yes
501 fptools_cv_shebang_perl=no
509 # Extra testing of the result AC_PROG_CC, testing the gcc version no. Sets the
510 # output variables HaveGcc and GccVersion.
511 AC_DEFUN([FP_HAVE_GCC],
512 [AC_REQUIRE([AC_PROG_CC])
513 if test -z "$GCC"; then
518 if test "$fp_have_gcc" = "NO" -a -d $srcdir/ghc; then
519 AC_MSG_ERROR([gcc is required])
521 AC_CACHE_CHECK([version of gcc], [fp_gcc_version],
522 [if test "$fp_have_gcc" = "YES"; then
523 fp_gcc_version="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/g'`"
524 FP_COMPARE_VERSIONS([$fp_gcc_version], [-lt], [2.0],
525 [AC_MSG_ERROR([Need at least gcc version 2.0 (3.4+ recommended)])])
527 fp_gcc_version="not-installed"
530 AC_SUBST([HaveGcc], [$fp_have_gcc])
531 AC_SUBST([GccVersion], [$fp_gcc_version])
534 AC_DEFUN([FP_MINGW_GCC],
537 mingw*) AC_MSG_CHECKING([whether $CC is a mingw gcc])
538 if $CC -v 2>&1 | grep mingw >/dev/null; then
542 AC_MSG_ERROR([Please use --with-gcc to specify a mingw gcc])
548 dnl Small feature test for perl version. Assumes PerlCmd
549 dnl contains path to perl binary.
551 dnl (Perl versions prior to v5.6 does not contain the string "v5";
552 dnl instead they display version strings such as "version 5.005".)
554 AC_DEFUN([FPTOOLS_CHECK_PERL_VERSION],
555 [$PerlCmd -v >conftest.out 2>&1
556 if grep "v5" conftest.out >/dev/null 2>&1; then
559 AC_MSG_ERROR([your version of perl probably won't work, try upgrading it.])
565 # FP_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR,
566 # [VALUE-IF-NOT-FOUND], [PATH], [REJECT])
567 # -----------------------------------------------------
568 # HACK: A small wrapper around AC_CHECK_PROG, setting VARIABLE to the full path
569 # of PROG-TO-CHECK-FOR when found.
570 AC_DEFUN([FP_CHECK_PROG],
571 [AC_CHECK_PROG([$1], [$2], [$as_dir/$ac_word$ac_exec_ext], [$3], [$4], [$5])][]dnl
577 # Find a non-WinDoze version of the "find" utility.
578 AC_DEFUN([FP_PROG_FIND],
579 [AC_PATH_PROG([fp_prog_find], [find])
580 echo foo > conftest.txt
581 $fp_prog_find conftest.txt -print > conftest.out 2>&1
582 if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then
583 # OK, looks like a real "find".
584 case $HostPlatform in
586 if test x${OSTYPE} != xmsys
588 fp_prog_find="`cygpath --mixed ${fp_prog_find}`"
589 AC_MSG_NOTICE([normalized find command to $fp_prog_find])
593 FindCmd="$fp_prog_find"
595 # Found a poor WinDoze version of "find", ignore it.
596 AC_MSG_WARN([$fp_prog_find looks like a non-*nix find, ignoring it])
597 FP_CHECK_PROG([FindCmd], [find], [], [], [$fp_prog_find])
599 rm -f conftest.txt conftest.out
600 AC_SUBST([FindCmd])[]dnl
606 # Find a Unix-like sort
607 AC_DEFUN([FP_PROG_SORT],
608 [AC_PATH_PROG([fp_prog_sort], [sort])
609 echo conwip > conftest.txt
610 $fp_prog_sort -f conftest.txt > conftest.out 2>&1
611 if grep 'conwip' conftest.out > /dev/null 2>&1 ; then
613 SortCmd="$fp_prog_sort"
615 # Summink else..pick next one.
616 AC_MSG_WARN([$fp_prog_sort looks like a non-*nix sort, ignoring it])
617 FP_CHECK_PROG([SortCmd], [sort], [], [], [$fp_prog_sort])
619 rm -f conftest.txt conftest.out
620 AC_SUBST([SortCmd])[]dnl
624 dnl FPTOOLS_NOCACHE_CHECK prints a message, then sets the
625 dnl values of the second argument to the result of running
626 dnl the commands given by the third. It does not cache its
627 dnl result, so it is suitable for checks which should be
630 AC_DEFUN([FPTOOLS_NOCACHE_CHECK],
631 [AC_MSG_CHECKING([$1])
633 AC_MSG_RESULT([$][$2])
637 dnl FPTOOLS_GHC_VERSION(version)
638 dnl FPTOOLS_GHC_VERSION(major, minor [, patchlevel])
639 dnl FPTOOLS_GHC_VERSION(version, major, minor, patchlevel)
641 dnl Test for version of installed ghc. Uses $GHC.
642 dnl [original version pinched from c2hs]
644 AC_DEFUN([FPTOOLS_GHC_VERSION],
645 [FPTOOLS_NOCACHE_CHECK([version of ghc], [fptools_version_of_ghc],
646 ["${WithGhc-ghc}" --version > conftestghc 2>&1
647 cat conftestghc >&AS_MESSAGE_LOG_FD
648 #Useless Use Of cat award...
649 fptools_version_of_ghc=`cat conftestghc | sed -n -e 's/, patchlevel *\([[0-9]]\)/.\1/;s/.* version \([[0-9]][[0-9.]]*\).*/\1/p'`
651 if test "[$]fptools_version_of_ghc" = ""
653 fptools_version_of_ghc='unknown'
655 fptools_version_of_ghc[_major]=`echo [$]fptools_version_of_ghc | sed -e 's/^\([[0-9]]\).*/\1/'`
656 fptools_version_of_ghc[_minor]=`echo [$]fptools_version_of_ghc | sed -e 's/^[[0-9]]\.\([[0-9]]*\).*/\1/'`
657 fptools_version_of_ghc[_pl]=`echo [$]fptools_version_of_ghc | sed -n -e 's/^[[0-9]]\.[[0-9]]*\.\([[0-9]]*\)/\1/p'`
659 if test "[$]fptools_version_of_ghc[_pl]" = ""
661 fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor]"
662 fptools_version_of_ghc[_pl]="0"
664 fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor].[$]fptools_version_of_ghc[_pl]"
668 [$1]="[$]fptools_version_of_ghc[_all]"
670 [$1]="[$]fptools_version_of_ghc[_major]"
671 [$2]="[$]fptools_version_of_ghc[_minor]"
673 [$1]="[$]fptools_version_of_ghc[_major]"
674 [$2]="[$]fptools_version_of_ghc[_minor]"
675 [$3]="[$]fptools_version_of_ghc[_pl]"
677 [$1]="[$]fptools_version_of_ghc[_all]"
678 [$2]="[$]fptools_version_of_ghc[_major]"
679 [$3]="[$]fptools_version_of_ghc[_minor]"
680 [$4]="[$]fptools_version_of_ghc[_pl]"
686 # FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
687 # ---------------------------------------------------------------------------------
688 # A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the
689 # additional flexibility of specifying the PROLOGUE and BODY.
690 AC_DEFUN([FP_CHECK_FUNC],
691 [AS_VAR_PUSHDEF([fp_func], [fp_cv_func_$1])dnl
692 AC_CACHE_CHECK([for $1], fp_func,
693 [AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])],
694 [AS_VAR_SET(fp_func, yes)],
695 [AS_VAR_SET(fp_func, no)])])
696 AS_IF([test AS_VAR_GET(fp_func) = yes],
697 [AC_DEFINE(AS_TR_CPP(HAVE_$1), [1],
698 [Define to 1 if you have the `]$1[' function.]) $4],
700 AS_VAR_POPDEF([fp_func])dnl
706 # Generates a DocBook XML V4.2 document in conftest.xml.
707 AC_DEFUN([FP_GEN_DOCBOOK_XML],
709 cat > conftest.xml << EOF
710 <?xml version="1.0" encoding="iso-8859-1"?>
711 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
712 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
714 <title>A DocBook Test Document</title>
715 <chapter id="id-one">
716 <title>A Chapter Title</title>
717 <para>This is a paragraph, referencing <xref linkend="id-two"/>.</para>
719 <chapter id="id-two">
720 <title>Another Chapter Title</title>
721 <para>This is another paragraph, referencing <xref linkend="id-one"/>.</para>
725 ]) # FP_GEN_DOCBOOK_XML
730 # Sets the output variable XsltprocCmd to the full path of the XSLT processor
731 # xsltproc. XsltprocCmd is empty if xsltproc could not be found.
732 AC_DEFUN([FP_PROG_XSLTPROC],
733 [AC_PATH_PROG([XsltprocCmd], [xsltproc])
734 if test -z "$XsltprocCmd"; then
735 AC_MSG_WARN([cannot find xsltproc in your PATH, you will not be able to build the documentation])
740 # FP_DIR_DOCBOOK_XSL(XSL-DIRS)
741 # ----------------------------
742 # Check which of the directories XSL-DIRS contains DocBook XSL stylesheets. The
743 # output variable DIR_DOCBOOK_XSL will contain the first usable directory or
744 # will be empty if none could be found.
745 AC_DEFUN([FP_DIR_DOCBOOK_XSL],
746 [AC_REQUIRE([FP_PROG_XSLTPROC])dnl
747 if test -n "$XsltprocCmd"; then
748 AC_CACHE_CHECK([for DocBook XSL stylesheet directory], fp_cv_dir_docbook_xsl,
750 fp_cv_dir_docbook_xsl=no
752 if $XsltprocCmd ${fp_var}/html/docbook.xsl conftest.xml > /dev/null 2>&1; then
753 fp_cv_dir_docbook_xsl=$fp_var
759 if test x"$fp_cv_dir_docbook_xsl" = xno; then
760 AC_MSG_WARN([cannot find DocBook XSL stylesheets, you will not be able to build the documentation])
763 DIR_DOCBOOK_XSL=$fp_cv_dir_docbook_xsl
765 AC_SUBST([DIR_DOCBOOK_XSL])
766 ])# FP_DIR_DOCBOOK_XSL
771 # Sets the output variable XmllintCmd to the full path of the XSLT processor
772 # xmllint. XmllintCmd is empty if xmllint could not be found.
773 AC_DEFUN([FP_PROG_XMLLINT],
774 [AC_PATH_PROG([XmllintCmd], [xmllint])
775 if test -z "$XmllintCmd"; then
776 AC_MSG_WARN([cannot find xmllint in your PATH, you will not be able to validate your documentation])
781 # FP_CHECK_DOCBOOK_DTD
782 # --------------------
783 AC_DEFUN([FP_CHECK_DOCBOOK_DTD],
784 [AC_REQUIRE([FP_PROG_XMLLINT])dnl
785 if test -n "$XmllintCmd"; then
786 AC_MSG_CHECKING([for DocBook DTD])
788 if $XmllintCmd --valid --noout conftest.xml > /dev/null 2>&1; then
791 AC_MSG_RESULT([failed])
792 AC_MSG_WARN([cannot find a DTD for DocBook XML V4.2, you will not be able to validate your documentation])
793 AC_MSG_WARN([check your XML_CATALOG_FILES environment variable and/or /etc/xml/catalog])
797 ])# FP_CHECK_DOCBOOK_DTD
802 # Generates a formatting objects document in conftest.fo.
803 AC_DEFUN([FP_GEN_FO],
805 cat > conftest.fo << EOF
806 <?xml version="1.0"?>
807 <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
808 <fo:layout-master-set>
809 <fo:simple-page-master master-name="blank">
811 </fo:simple-page-master>
812 </fo:layout-master-set>
813 <fo:page-sequence master-reference="blank">
814 <fo:flow flow-name="xsl-region-body">
827 # Set the output variable 'FopCmd' to the first working 'fop' in the current
828 # 'PATH'. Note that /usr/bin/fop is broken in SuSE 9.1 (unpatched), so try
829 # /usr/share/fop/fop.sh in that case (or no 'fop'), too.
830 AC_DEFUN([FP_PROG_FOP],
831 [AC_PATH_PROGS([FopCmd1], [fop fop.sh])
832 if test -n "$FopCmd1"; then
833 AC_CACHE_CHECK([for $FopCmd1 usability], [fp_cv_fop_usability],
835 if "$FopCmd1" -fo conftest.fo -ps conftest.ps > /dev/null 2>&1; then
836 fp_cv_fop_usability=yes
838 fp_cv_fop_usability=no
841 if test x"$fp_cv_fop_usability" = xyes; then
845 if test -z "$FopCmd"; then
846 AC_PATH_PROGS([FopCmd2], [fop.sh], , [/usr/share/fop])
853 # FP_PROG_FO_PROCESSOR
854 # --------------------
855 # Try to find an FO processor. PassiveTeX output is sometimes a bit strange, so
856 # try FOP first. Sets the output variables FopCmd, XmltexCmd, DvipsCmd, and
858 AC_DEFUN([FP_PROG_FO_PROCESSOR],
859 [AC_REQUIRE([FP_PROG_FOP])
860 AC_PATH_PROG([XmltexCmd], [xmltex])
861 AC_PATH_PROG([DvipsCmd], [dvips])
862 if test -z "$FopCmd"; then
863 if test -z "$XmltexCmd"; then
864 AC_MSG_WARN([cannot find an FO => DVI converter, you will not be able to build DVI or PostScript documentation])
866 if test -z "$DvipsCmd"; then
867 AC_MSG_WARN([cannot find a DVI => PS converter, you will not be able to build PostScript documentation])
870 AC_PATH_PROG([PdfxmltexCmd], [pdfxmltex])
871 if test -z "$PdfxmltexCmd"; then
872 AC_MSG_WARN([cannot find an FO => PDF converter, you will not be able to build PDF documentation])
874 elif test -z "$XmltexCmd"; then
875 AC_MSG_WARN([cannot find an FO => DVI converter, you will not be able to build DVI documentation])
877 ])# FP_PROG_FO_PROCESSOR
882 # Try to find a ghc-pkg matching the ghc mentioned in the environment variable
883 # WithGhc. If the latter is unset or no matching ghc-pkg can be found, try to
884 # find a plain ghc-pkg. Sets the output variable GhcPkgCmd.
885 AC_DEFUN([FP_PROG_GHC_PKG],
886 [AC_CACHE_CHECK([for ghc-pkg matching $WithGhc], fp_cv_matching_ghc_pkg,
887 [fp_ghc_pkg_guess=`echo $WithGhc | sed 's,ghc\(@<:@^/\\@:>@*\)$,ghc-pkg\1,'`
888 if "$fp_ghc_pkg_guess" -l > /dev/null 2>&1; then
889 fp_cv_matching_ghc_pkg=$fp_ghc_pkg_guess
891 fp_cv_matching_ghc_pkg=no
893 if test x"$fp_cv_matching_ghc_pkg" = xno; then
894 AC_PATH_PROG([GhcPkgCmd], [ghc-pkg])
896 GhcPkgCmd=$fp_cv_matching_ghc_pkg
897 fi])# FP_PROG_GHC_PKG
900 # FP_GHC_HAS_EDITLINE
901 # -------------------
902 AC_DEFUN([FP_GHC_HAS_EDITLINE],
903 [AC_REQUIRE([FP_PROG_GHC_PKG])
904 AC_CACHE_CHECK([whether ghc has editline package], [fp_cv_ghc_has_editline],
905 [if "${GhcPkgCmd-ghc-pkg}" --show-package editline >/dev/null 2>&1; then
906 fp_cv_ghc_has_editline=yes
908 fp_cv_ghc_has_editline=no
910 AC_SUBST([GhcHasEditline], [`echo $fp_cv_ghc_has_editline | sed 'y/yesno/YESNO/'`])
911 ])# FP_GHC_HAS_EDITLINE
916 # Determine which extra flags we need to pass gcc when we invoke it
917 # to compile .hc code.
919 # Some OSs (Mandrake Linux, in particular) configure GCC with
920 # -momit-leaf-frame-pointer on by default. If this is the case, we
921 # need to turn it off for mangling to work. The test is currently a
922 # bit crude, using only the version number of gcc.
924 # -fwrapv is needed for gcc to emit well-behaved code in the presence of
925 # integer wrap around. (Trac #952)
927 # -fno-unit-at-a-time or -fno-toplevel-reoder is necessary to avoid gcc
928 # reordering things in the module and confusing the manger and/or splitter.
931 AC_DEFUN([FP_GCC_EXTRA_FLAGS],
932 [AC_REQUIRE([FP_HAVE_GCC])
933 AC_CACHE_CHECK([for extra options to pass gcc when compiling via C], [fp_cv_gcc_extra_opts],
934 [fp_cv_gcc_extra_opts=
935 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
936 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fwrapv"],
938 case $TargetPlatform in
940 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.2],
941 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -mno-omit-leaf-frame-pointer"],
943 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
944 [FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [4.2],
945 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-toplevel-reorder"],
946 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-unit-at-a-time"]
951 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [4.2],
952 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-toplevel-reorder"],
957 AC_SUBST([GccExtraViaCOpts],$fp_cv_gcc_extra_opts)
961 # FP_SETUP_PROJECT_VERSION
962 # ---------------------
963 AC_DEFUN([FP_SETUP_PROJECT_VERSION],
965 if test "$RELEASE" = "NO"; then
966 AC_MSG_CHECKING([for GHC version date])
967 if test -f VERSION_DATE; then
968 PACKAGE_VERSION=${PACKAGE_VERSION}.`cat VERSION_DATE`
969 AC_MSG_RESULT(given $PACKAGE_VERSION)
970 elif test -d .git; then
972 ver_date=`git log -n 1 --date=short --pretty=format:%ci | sed "s/^.*\([0-9][0-9][0-9][0-9]\)-\([0-9][0-9]\)-\([0-9][0-9]\).*$/\1\2\3/"`
973 if echo $ver_date | grep '^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$' 2>&1 >/dev/null; then true; else
975 AC_MSG_ERROR([failed to detect version date: check that git is in your path])
977 PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
978 AC_MSG_RESULT(inferred $PACKAGE_VERSION)
979 elif test -d _darcs; then
980 # TODO: Remove this branch after conversion to Git
982 ver_date=`darcs changes --quiet --no-summary --xml | head -500 | grep 'date=' | sed "s/^.*date='\([0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]\).*$/\1/g" | sort -n | tail -1`
983 if echo $ver_date | grep '^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$' 2>&1 >/dev/null; then true; else
985 AC_MSG_ERROR([failed to detect version date: check that darcs is in your path])
987 PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
988 AC_MSG_RESULT(inferred $PACKAGE_VERSION)
989 elif test -f VERSION; then
990 PACKAGE_VERSION=`cat VERSION`
991 AC_MSG_RESULT(given $PACKAGE_VERSION)
993 AC_MSG_WARN([cannot determine snapshot version: no .git or _darcs directory and no VERSION file])
998 AC_SUBST([ProjectName], [$PACKAGE_NAME])
999 AC_SUBST([ProjectVersion], [$PACKAGE_VERSION])
1001 # Split PACKAGE_VERSION into (possibly empty) parts
1002 VERSION_MAJOR=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
1003 VERSION_TMP=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
1004 VERSION_MINOR=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
1005 ProjectPatchLevel=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
1007 # Calculate project version as an integer, using 2 digits for minor version
1008 case $VERSION_MINOR in
1009 ?) ProjectVersionInt=${VERSION_MAJOR}0${VERSION_MINOR} ;;
1010 ??) ProjectVersionInt=${VERSION_MAJOR}${VERSION_MINOR} ;;
1011 *) AC_MSG_ERROR([bad minor version in $PACKAGE_VERSION]) ;;
1013 AC_SUBST([ProjectVersionInt])
1015 # The project patchlevel is zero unless stated otherwise
1016 test -z "$ProjectPatchLevel" && ProjectPatchLevel=0
1018 # Remove dots from the patch level; this allows us to have versions like 6.4.1.20050508
1019 ProjectPatchLevel=`echo $ProjectPatchLevel | sed 's/\.//'`
1021 AC_SUBST([ProjectPatchLevel])
1022 ])# FP_SETUP_PROJECT_VERSION
1025 # Check for a working timer_create(). We need a pretty detailed check
1026 # here, because there exist partially-working implementations of
1027 # timer_create() in certain versions of Linux (see bug #1933).
1029 AC_DEFUN([FP_CHECK_TIMER_CREATE],
1030 [AC_CACHE_CHECK([for a working timer_create(CLOCK_REALTIME)],
1031 [fptools_cv_timer_create_works],
1034 #ifdef HAVE_STDLIB_H
1040 #ifdef HAVE_SIGNAL_H
1043 #ifdef HAVE_UNISTD_H
1047 static volatile int tock = 0;
1048 static void handler(int i)
1053 static void timeout(int i)
1055 // timer_settime() has been known to hang, so just in case
1056 // we install a 1-second timeout (see #2257)
1060 int main(int argc, char *argv[])
1065 struct itimerspec it;
1066 struct sigaction action;
1069 ev.sigev_notify = SIGEV_SIGNAL;
1070 ev.sigev_signo = SIGVTALRM;
1072 action.sa_handler = handler;
1073 action.sa_flags = 0;
1074 sigemptyset(&action.sa_mask);
1075 if (sigaction(SIGVTALRM, &action, NULL) == -1) {
1076 fprintf(stderr,"SIGVTALRM problem\n");
1080 action.sa_handler = timeout;
1081 action.sa_flags = 0;
1082 sigemptyset(&action.sa_mask);
1083 if (sigaction(SIGALRM, &action, NULL) == -1) {
1084 fprintf(stderr,"SIGALRM problem\n");
1089 if (timer_create(CLOCK_PROCESS_CPUTIME_ID, &ev, &timer) != 0) {
1090 fprintf(stderr,"No CLOCK_PROCESS_CPUTIME_ID timer\n");
1094 it.it_value.tv_sec = 0;
1095 it.it_value.tv_nsec = 1;
1096 it.it_interval = it.it_value;
1097 if (timer_settime(timer, 0, &it, NULL) != 0) {
1098 fprintf(stderr,"settime problem\n");
1104 for(n = 3; n < 20000; n++){
1105 for(m = 2; m <= n/2; m++){
1106 if (!(n%m)) count++;
1113 fprintf(stderr,"no CLOCK_PROCESS_CPUTIME_ID signal\n");
1117 timer_delete(timer);
1119 if (timer_create(CLOCK_REALTIME, &ev, &timer) != 0) {
1120 fprintf(stderr,"No CLOCK_REALTIME timer\n");
1124 it.it_value.tv_sec = 0;
1125 it.it_value.tv_nsec = 1000000;
1126 it.it_interval = it.it_value;
1127 if (timer_settime(timer, 0, &it, NULL) != 0) {
1128 fprintf(stderr,"settime problem\n");
1137 fprintf(stderr,"no CLOCK_REALTIME signal\n");
1141 timer_delete(timer);
1146 [fptools_cv_timer_create_works=yes],
1147 [fptools_cv_timer_create_works=no])
1149 case $fptools_cv_timer_create_works in
1150 yes) AC_DEFINE([USE_TIMER_CREATE], 1,
1151 [Define to 1 if we can use timer_create(CLOCK_PROCESS_CPUTIME_ID,...)]);;
1157 AC_DEFUN([FP_ARG_GMP],
1159 AC_ARG_WITH([gmp-includes],
1160 [AC_HELP_STRING([--with-gmp-includes],
1161 [directory containing gmp.h])],
1162 [gmp_includes=$withval],
1163 [gmp_includes=NONE])
1165 AC_ARG_WITH([gmp-libraries],
1166 [AC_HELP_STRING([--with-gmp-libraries],
1167 [directory containing gmp library])],
1168 [gmp_libraries=$withval],
1169 [gmp_libraries=NONE])
1172 AC_DEFUN([CHECK_GMP],
1173 [AC_REQUIRE([AC_PROG_CPP])
1174 AC_REQUIRE([AC_PROG_CC])
1177 # FP_CHECK_MACOSX_DEPLOYMENT_TARGET
1178 # ---------------------------------
1179 AC_DEFUN([FP_CHECK_MACOSX_DEPLOYMENT_TARGET],
1181 if test "x$TargetOS_CPP-$TargetVendor_CPP" = "xdarwin-apple"; then
1182 AC_MSG_CHECKING([Mac OS X deployment target])
1183 case $FP_MACOSX_DEPLOYMENT_TARGET in
1185 10.4) MACOSX_DEPLOYMENT_VERSION=10.4
1186 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX10.4u.sdk
1188 10.4u) MACOSX_DEPLOYMENT_VERSION=10.4
1189 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX10.4u.sdk
1191 *) MACOSX_DEPLOYMENT_VERSION=$FP_MACOSX_DEPLOYMENT_TARGET
1192 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX${FP_MACOSX_DEPLOYMENT_TARGET}.sdk
1195 if test "x$FP_MACOSX_DEPLOYMENT_TARGET" = "xnone"; then
1198 if test ! -d $MACOSX_DEPLOYMENT_SDK; then
1199 AC_MSG_ERROR([Unknown deployment target $FP_MACOSX_DEPLOYMENT_TARGET])
1201 AC_MSG_RESULT([${MACOSX_DEPLOYMENT_VERSION} (${MACOSX_DEPLOYMENT_SDK})])
1206 # --------------------------------------------------------------
1207 # Calculate absolute path to build tree
1208 # --------------------------------------------------------------
1210 AC_DEFUN([FP_FIND_ROOT],[
1211 AC_MSG_CHECKING(for path to top of build tree)
1214 dnl make -C utils/pwd clean && make -C utils/pwd
1215 dnl except we don't want to have to know what make is called. Sigh.
1216 if test ! -f utils/pwd/pwd && test ! -f utils/pwd/pwd.exe; then
1222 $WithGhc -v0 --make pwd -o pwd
1226 hardtop=`utils/pwd/pwd forwardslash`
1228 if ! test -d "$hardtop"; then
1229 AC_MSG_ERROR([cannot determine current directory])
1232 dnl Remove common automounter nonsense
1234 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|'`
1238 AC_MSG_RESULT(${hardtop})
1240 # We don't support building in directories with spaces.
1242 *' '*) AC_MSG_ERROR([
1243 The build system does not support building in a directory containing
1244 space characters. Suggestion: move the build tree somewhere else.])