3 ev.sigev_notify = SIGEV_SIGNAL;
4 ev.sigev_signo = SIGVTALRM;
5 if (timer_create(CLOCK_PROCESS_CPUTIME_ID, &ev, &timer) != 0) {
13 # Extra autoconf macros for the Glasgow fptools
15 # To be a good autoconf citizen, names of local macros have prefixed with FP_ to
16 # ensure we don't clash with any pre-supplied autoconf ones.
19 # FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN
20 # ----------------------------------
21 # Little endian Arm on Linux with some ABIs has big endian word order
22 # in doubles. Define FLOAT_WORDS_BIGENDIAN if this is the case.
23 AC_DEFUN([FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN],
24 [AC_CACHE_CHECK([whether float word order is big endian], [fptools_cv_float_word_order_bigendian],
27 [#include <endian.h>],
28 [#if defined(__FLOAT_WORD_ORDER) && __FLOAT_WORD_ORDER == BIG_ENDIAN
31 not float word order big endian
34 [fptools_cv_float_word_order_bigendian=yes],
35 [fptools_cv_float_word_order_bigendian=no])
37 case $fptools_cv_float_word_order_bigendian in
39 AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
40 [Define to 1 if your processor stores words of floats with
41 the most significant byte first]) ;;
46 # FP_EVAL_STDERR(COMMAND)
47 # -----------------------
48 # Eval COMMAND, save its stderr (without lines resulting from shell tracing)
49 # into the file conftest.err and the exit status in the variable fp_status.
50 AC_DEFUN([FP_EVAL_STDERR],
51 [{ (eval $1) 2>conftest.er1
53 grep -v '^ *+' conftest.er1 >conftest.err
55 (exit $fp_status); }[]dnl
59 # FP_PROG_CONTEXT_DIFF
60 # --------------------
61 # Figure out how to do context diffs. Sets the output variable ContextDiffCmd.
63 # Note: NeXTStep thinks diff'ing a file against itself is "trouble".
65 # Used by ghc, glafp-utils/ltx, and glafp-utils/runstdtest.
66 AC_DEFUN([FP_PROG_CONTEXT_DIFF],
67 [AC_CACHE_CHECK([for a working context diff], [fp_cv_context_diff],
71 for fp_var in '-U 1' '-u1' '-C 1' '-c1'
73 if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then
74 fp_cv_context_diff="diff $fp_var"
78 if test x"$fp_cv_context_diff" = xno; then
79 AC_MSG_ERROR([cannot figure out how to do context diffs])
81 AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff])
82 ])# FP_PROG_CONTEXT_DIFF
85 # FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
86 # --------------------------------------------------------
87 # Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for
88 # compilation. Execute IF-FAILS when unable to determine the value. Works for
89 # cross-compilation, too.
91 # Implementation note: We are lazy and use an internal autoconf macro, but it
92 # is supported in autoconf versions 2.50 up to the actual 2.57, so there is
94 AC_DEFUN([FP_COMPUTE_INT],
95 [_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl
99 # FP_CHECK_ALIGNMENT(TYPE, [IGNORED], [INCLUDES = DEFAULT-INCLUDES])
100 # ------------------------------------------------------------------
101 # A variation of AC_CHECK_SIZEOF for computing the alignment restrictions of a
102 # given type. Defines ALIGNMENT_TYPE.
103 AC_DEFUN([FP_CHECK_ALIGNMENT],
104 [AS_LITERAL_IF([$1], [],
105 [AC_FATAL([$0: requires literal arguments])])[]dnl
106 AC_CHECK_TYPE([$1], [], [], [$3])[]dnl
107 m4_pushdef([fp_Cache], [AS_TR_SH([fp_cv_alignment_$1])])[]dnl
108 AC_CACHE_CHECK([alignment of $1], [fp_Cache],
109 [if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then
110 FP_COMPUTE_INT([(long) (&((struct { char c; $1 ty; } *)0)->ty)],
112 [AC_INCLUDES_DEFAULT([$3])],
113 [AC_MSG_ERROR([cannot compute alignment ($1)
114 See `config.log' for more details.], [77])])
118 AC_DEFINE_UNQUOTED(AS_TR_CPP(alignment_$1), $fp_Cache, [The alignment of a `$1'.])[]dnl
119 m4_popdef([fp_Cache])[]dnl
120 ])# FP_CHECK_ALIGNMENT
123 # FP_LEADING_UNDERSCORE
124 # ---------------------
125 # Test for determining whether symbol names have a leading underscore. We assume
126 # that they _haven't_ if anything goes wrong. Sets the output variable
127 # LeadingUnderscore to YES or NO and defines LEADING_UNDERSCORE correspondingly.
129 # Some nlist implementations seem to try to be compatible by ignoring a leading
130 # underscore sometimes (eg. FreeBSD). We therefore have to work around this by
131 # checking for *no* leading underscore first. Sigh. --SDM
133 # Similarly on OpenBSD, but this test doesn't help. -- dons
134 AC_DEFUN([FP_LEADING_UNDERSCORE],
135 [AC_CHECK_LIB([elf], [nlist], [LIBS="-lelf $LIBS"])
136 AC_CACHE_CHECK([leading underscore in symbol names], [fptools_cv_leading_underscore], [
137 # Hack!: nlist() under Digital UNIX insist on there being an _,
138 # but symbol table listings shows none. What is going on here?!?
140 # Another hack: cygwin doesn't come with nlist.h , so we hardwire
141 # the underscoredness of that "platform"
142 case $HostPlatform in
143 *openbsd*) # x86 openbsd is ELF from 3.4 >, meaning no leading uscore
145 i386-*2\.@<:@0-9@:>@ | i386-*3\.@<:@0-3@:>@ ) fptools_cv_leading_underscore=yes ;;
146 *) fptools_cv_leading_underscore=no ;;
148 alpha-dec-osf*) fptools_cv_leading_underscore=no;;
149 *cygwin32) fptools_cv_leading_underscore=yes;;
150 *mingw32) fptools_cv_leading_underscore=yes;;
152 # HACK: Apple doesn't seem to provide nlist in the 64-bit-libraries
153 x86_64-apple-darwin*) fptools_cv_leading_underscore=yes;;
155 *) AC_RUN_IFELSE([AC_LANG_SOURCE([[#ifdef HAVE_NLIST_H
157 struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
158 struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
166 if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
168 if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
172 }]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no])
175 AC_SUBST([LeadingUnderscore], [`echo $fptools_cv_leading_underscore | sed 'y/yesno/YESNO/'`])
176 if test x"$fptools_cv_leading_underscore" = xyes; then
177 AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.])
178 fi])# FP_LEADING_UNDERSCORE
181 # FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
182 # ----------------------------------------------------------------------------------
183 # Compare dotted version numbers VERSION1 and VERSION2 lexicographically according
184 # to TEST (one of -eq, -ne, -lt, -le, -gt, or -ge).
185 AC_DEFUN([FP_COMPARE_VERSIONS],
186 [fp_version1=$1; fp_version2=$3
187 fp_save_IFS=$IFS; IFS='.'
188 while test x"$fp_version1" != x || test x"$fp_version2" != x
191 set dummy $fp_version1; shift
193 test $[@%:@] = 0 || { fp_num1="[$]1"; shift; }
194 test x"$fp_num1" = x && fp_num1="0"
197 set dummy $fp_version2; shift
199 test $[@%:@] = 0 || { fp_num2="[$]1"; shift; }
200 test x"$fp_num2" = x && fp_num2="0"
203 test "$fp_num1" = "$fp_num2" || break;
206 AS_IF([test "$fp_num1" $2 "$fp_num2"], [$4], [$5])[]dnl
207 ])# FP_COMPARE_VERSIONS
211 dnl Check for GreenCard and version.
213 AC_DEFUN([FPTOOLS_GREENCARD],
215 AC_PATH_PROG(GreenCardCmd,greencard)
216 AC_CACHE_CHECK([for version of greencard], fptools_cv_greencard_version,
218 [if test x"$GreenCardCmd" != x; then
219 fptools_cv_greencard_version="`$GreenCardCmd --version |
220 grep 'version' | sed -e 's/greencard. version \([^ ]*\).*/\1/g'`"
222 fptools_cv_greencard_version=""
226 FP_COMPARE_VERSIONS([$fptools_cv_greencard_version],[-lt],[$1],
227 [AC_MSG_ERROR([greencard version $1 or later is required (found '$fptools_cv_greencard_version')])])[]dnl
228 GreenCardVersion=$fptools_cv_greencard_version
229 AC_SUBST(GreenCardVersion)
233 dnl Check for Happy and version. If we're building GHC, then we need
234 dnl at least Happy version 1.14. If there's no installed Happy, we look
235 dnl for a happy source tree and point the build system at that instead.
237 AC_DEFUN([FPTOOLS_HAPPY],
238 [AC_PATH_PROG(HappyCmd,happy,)
239 # Happy is passed to Cabal, so we need a native path
240 if test "x$HostPlatform" = "xi386-unknown-mingw32" && \
241 test "${OSTYPE}" != "msys" && \
242 test "${HappyCmd}" != ""
244 # Canonicalise to <drive>:/path/to/gcc
245 HappyCmd=`cygpath -m ${HappyCmd}`
246 AC_MSG_NOTICE([normalized happy command to $HappyCmd])
249 AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
251 [if test x"$HappyCmd" != x; then
252 fptools_cv_happy_version="`$HappyCmd -v |
253 grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
255 fptools_cv_happy_version="";
259 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
261 FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.15],
262 [AC_MSG_ERROR([Happy version 1.15 or later is required to compile GHC.])])[]dnl
264 HappyVersion=$fptools_cv_happy_version;
265 AC_SUBST(HappyVersion)
269 dnl Check for Haddock and version. If there's no installed Haddock, we look
270 dnl for a haddock source tree and point the build system at that instead.
272 AC_DEFUN([FPTOOLS_HADDOCK],
273 [AC_PATH_PROG(HaddockCmd,haddock,)
274 dnl Darn, I forgot to make Haddock print out its version number when
275 dnl invoked with -v. We could try generating some HTML and grepping
276 dnl through that to find the version number, but I think we'll make
277 dnl do without it for now.
278 # Haddock is passed to Cabal, so we need a native path
279 if test "x$HostPlatform" = "xi386-unknown-mingw32" && \
280 test "${OSTYPE}" != "msys" && \
281 test "${HaddockCmd}" != ""
283 # Canonicalise to <drive>:/path/to/gcc
284 HaddockCmd=`cygpath -m ${HaddockCmd}`
285 AC_MSG_NOTICE([normalized haddock command to $HaddockCmd])
290 dnl Check for Alex and version. If we're building GHC, then we need
291 dnl at least Alex version 2.0.1.
293 AC_DEFUN([FPTOOLS_ALEX],
295 AC_PATH_PROG(AlexCmd,alex,)
296 # Alex is passed to Cabal, so we need a native path
297 if test "x$HostPlatform" = "xi386-unknown-mingw32" && \
298 test "${OSTYPE}" != "msys" && \
299 test "${AlexCmd}" != ""
301 # Canonicalise to <drive>:/path/to/gcc
302 AlexCmd=`cygpath -m ${AlexCmd}`
305 AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
307 [if test x"$AlexCmd" != x; then
308 fptools_cv_alex_version="`$AlexCmd -v |
309 grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'`" ;
311 fptools_cv_alex_version="";
315 if test ! -f compiler/cmm/CmmLex.hs || test ! -f compiler/parser/Lexer.hs
317 FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[2.0.1],
318 [AC_MSG_ERROR([Alex version 2.0.1 or later is required to compile GHC.])])[]dnl
320 AlexVersion=$fptools_cv_alex_version;
321 AC_SUBST(AlexVersion)
327 # Sets the output variable LdCmd to the (non-Cygwin version of the) full path
328 # of ld. Exits if no ld can be found
329 AC_DEFUN([FP_PROG_LD],
333 AC_PATH_PROG([fp_prog_ld_raw], [ld])
334 if test -z "$fp_prog_ld_raw"; then
335 AC_MSG_ERROR([cannot find ld in your PATH, no idea how to link])
337 LdCmd=$fp_prog_ld_raw
338 case $HostPlatform in
339 *mingw32) if test x${OSTYPE} != xmsys; then
340 LdCmd="`cygpath -w ${fp_prog_ld_raw} | sed -e 's@\\\\@/@g'`"
341 AC_MSG_NOTICE([normalized ld command to $LdCmd])
343 # Insist on >= ld-2.15.x, since earlier versions doesn't handle
344 # the generation of relocatable object files with large amounts
345 # of relocations correctly. (cf. HSbase.o splittage-hack)
346 fp_prog_ld_version=`${LdCmd} --version | sed -n '/GNU ld/p' | tr -cd 0-9 | cut -b1-3`
347 FP_COMPARE_VERSIONS([$fp_prog_ld_version],[-lt],[214],
348 [AC_MSG_ERROR([GNU ld version later than 2.14 required to compile GHC on Windows.])])[]dnl
360 # Sets the output variable LdXFlag to -x if ld supports this flag, otherwise the
361 # variable's value is empty.
362 AC_DEFUN([FP_PROG_LD_X],
363 [AC_REQUIRE([FP_PROG_LD])
364 AC_CACHE_CHECK([whether ld understands -x], [fp_cv_ld_x],
365 [echo 'foo() {}' > conftest.c
366 ${CC-cc} -c conftest.c
367 if ${LdCmd} -r -x -o conftest2.o conftest.o > /dev/null 2>&1; then
373 if test "$fp_cv_ld_x" = yes; then
384 # Sets the output variable LdIsGNULd to YES or NO, depending on whether it is
386 AC_DEFUN([FP_PROG_LD_IS_GNU],
387 [AC_REQUIRE([FP_PROG_LD])
388 AC_CACHE_CHECK([whether ld is GNU ld], [fp_cv_gnu_ld],
389 [if ${LdCmd} --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
394 AC_SUBST([LdIsGNULd], [`echo $fp_cv_gnu_ld | sed 'y/yesno/YESNO/'`])
395 ])# FP_PROG_LD_IS_GNU
400 # Sets fp_prog_ar_raw to the full path of ar and fp_prog_ar to a non-Cygwin
401 # version of it. Exits if no ar can be found
402 AC_DEFUN([FP_PROG_AR],
403 [AC_PATH_PROG([fp_prog_ar_raw], [ar])
404 if test -z "$fp_prog_ar_raw"; then
405 AC_MSG_ERROR([cannot find ar in your PATH, no idea how to make a library])
407 fp_prog_ar=$fp_prog_ar_raw
408 case $HostPlatform in
409 *mingw32) if test x${OSTYPE} != xmsys; then
410 fp_prog_ar="`cygpath -w ${fp_prog_ar_raw} | sed -e 's@\\\\@/@g'`"
411 AC_MSG_NOTICE([normalized ar command to $fp_prog_ar])
420 # Sets fp_prog_ar_is_gnu to yes or no, depending on whether it is GNU ar or not.
421 AC_DEFUN([FP_PROG_AR_IS_GNU],
422 [AC_REQUIRE([FP_PROG_AR])
423 AC_CACHE_CHECK([whether $fp_prog_ar_raw is GNU ar], [fp_cv_prog_ar_is_gnu],
424 [if $fp_prog_ar_raw --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
425 fp_cv_prog_ar_is_gnu=yes
427 fp_cv_prog_ar_is_gnu=no
429 fp_prog_ar_is_gnu=$fp_cv_prog_ar_is_gnu
430 ])# FP_PROG_AR_IS_GNU
435 # Sets fp_prog_ar_args to the arguments for ar and the output variable ArCmd
436 # to a non-Cygwin invocation of ar including these arguments.
437 AC_DEFUN([FP_PROG_AR_ARGS],
438 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
439 AC_CACHE_CHECK([for ar arguments], [fp_cv_prog_ar_args],
441 # GNU ar needs special treatment: it appears to have problems with
442 # object files with the same name if you use the 's' modifier, but
443 # simple 'ar q' works fine, and doesn't need a separate ranlib.
444 if test $fp_prog_ar_is_gnu = yes; then
445 fp_cv_prog_ar_args="q"
448 for fp_var in clqsZ clqs cqs clq cq ; do
450 if $fp_prog_ar_raw $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null; then
451 fp_cv_prog_ar_args=$fp_var
456 if test -z "$fp_cv_prog_ar_args"; then
457 AC_MSG_ERROR([cannot figure out how to use your $fp_prog_ar_raw])
460 fp_prog_ar_args=$fp_cv_prog_ar_args
461 AC_SUBST([ArCmd], ["$fp_prog_ar $fp_prog_ar_args"])
466 # FP_PROG_AR_NEEDS_RANLIB
467 # -----------------------
468 # Sets the output variable RANLIB to "ranlib" if it is needed and found,
470 AC_DEFUN([FP_PROG_AR_NEEDS_RANLIB],
471 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
472 AC_REQUIRE([FP_PROG_AR_ARGS])
473 AC_REQUIRE([AC_PROG_CC])
474 AC_CACHE_CHECK([whether ranlib is needed], [fp_cv_prog_ar_needs_ranlib],
475 [if test $fp_prog_ar_is_gnu = yes; then
476 fp_cv_prog_ar_needs_ranlib=no
477 elif echo $TargetPlatform | grep "^.*-apple-darwin$" > /dev/null 2> /dev/null; then
478 # It's quite tedious to check for Apple's crazy timestamps in .a files,
480 fp_cv_prog_ar_needs_ranlib=yes
481 elif echo $fp_prog_ar_args | grep "s" > /dev/null 2> /dev/null; then
482 fp_cv_prog_ar_needs_ranlib=no
484 fp_cv_prog_ar_needs_ranlib=yes
486 if test $fp_cv_prog_ar_needs_ranlib = yes; then
492 ])# FP_PROG_AR_NEEDS_RANLIB
495 # FP_PROG_AR_SUPPORTS_INPUT
496 # -------------------------
497 # Sets the output variable ArSupportsInput to "-input" or "", depending on
498 # whether ar supports -input flag is supported or not.
499 AC_DEFUN([FP_PROG_AR_SUPPORTS_INPUT],
500 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
501 AC_REQUIRE([FP_PROG_AR_ARGS])
502 AC_CACHE_CHECK([whether $fp_prog_ar_raw supports -input], [fp_cv_prog_ar_supports_input],
503 [fp_cv_prog_ar_supports_input=no
504 if test $fp_prog_ar_is_gnu = no; then
507 if FP_EVAL_STDERR([$fp_prog_ar_raw $fp_prog_ar_args conftest.a -input conftest.lst]) >/dev/null; then
508 test -s conftest.err || fp_cv_prog_ar_supports_input=yes
512 if test $fp_cv_prog_ar_supports_input = yes; then
513 ArSupportsInput="-input"
517 AC_SUBST([ArSupportsInput])
518 ])# FP_PROG_AR_SUPPORTS_INPUT
522 dnl AC_SHEBANG_PERL - can we she-bang perl?
524 AC_DEFUN([FPTOOLS_SHEBANG_PERL],
525 [AC_CACHE_CHECK([if your perl works in shell scripts], fptools_cv_shebang_perl,
530 (SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null)
531 if test $? -ne 69; then
532 fptools_cv_shebang_perl=yes
534 fptools_cv_shebang_perl=no
542 # Extra testing of the result AC_PROG_CC, testing the gcc version no. Sets the
543 # output variables HaveGcc and GccVersion.
544 AC_DEFUN([FP_HAVE_GCC],
545 [AC_REQUIRE([AC_PROG_CC])
546 if test -z "$GCC"; then
551 if test "$fp_have_gcc" = "NO" -a -d $srcdir/ghc; then
552 AC_MSG_ERROR([gcc is required])
554 AC_CACHE_CHECK([version of gcc], [fp_gcc_version],
555 [if test "$fp_have_gcc" = "YES"; then
556 fp_gcc_version="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/g'`"
557 FP_COMPARE_VERSIONS([$fp_gcc_version], [-lt], [2.0],
558 [AC_MSG_ERROR([Need at least gcc version 2.0 (3.4+ recommended)])])
560 fp_gcc_version="not-installed"
563 AC_SUBST([HaveGcc], [$fp_have_gcc])
564 AC_SUBST([GccVersion], [$fp_gcc_version])
567 AC_DEFUN([FP_MINGW_GCC],
570 mingw*) AC_MSG_CHECKING([whether $CC is a mingw gcc])
571 if $CC -v 2>&1 | grep mingw >/dev/null; then
575 AC_MSG_ERROR([Please use --with-gcc to specify a mingw gcc])
581 dnl Small feature test for perl version. Assumes PerlCmd
582 dnl contains path to perl binary.
584 dnl (Perl versions prior to v5.6 does not contain the string "v5";
585 dnl instead they display version strings such as "version 5.005".)
587 AC_DEFUN([FPTOOLS_CHECK_PERL_VERSION],
588 [$PerlCmd -v >conftest.out 2>&1
589 if grep "v5" conftest.out >/dev/null 2>&1; then
592 AC_MSG_ERROR([your version of perl probably won't work, try upgrading it.])
598 # FP_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR,
599 # [VALUE-IF-NOT-FOUND], [PATH], [REJECT])
600 # -----------------------------------------------------
601 # HACK: A small wrapper around AC_CHECK_PROG, setting VARIABLE to the full path
602 # of PROG-TO-CHECK-FOR when found.
603 AC_DEFUN([FP_CHECK_PROG],
604 [AC_CHECK_PROG([$1], [$2], [$as_dir/$ac_word$ac_exec_ext], [$3], [$4], [$5])][]dnl
610 # Find a non-WinDoze version of the "find" utility.
611 AC_DEFUN([FP_PROG_FIND],
612 [AC_PATH_PROG([fp_prog_find], [find])
613 echo foo > conftest.txt
614 $fp_prog_find conftest.txt -print > conftest.out 2>&1
615 if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then
616 # OK, looks like a real "find".
617 case $HostPlatform in
619 if test x${OSTYPE} != xmsys
621 fp_prog_find="`cygpath --mixed ${fp_prog_find}`"
622 AC_MSG_NOTICE([normalized find command to $fp_prog_find])
626 FindCmd="$fp_prog_find"
628 # Found a poor WinDoze version of "find", ignore it.
629 AC_MSG_WARN([$fp_prog_find looks like a non-*nix find, ignoring it])
630 FP_CHECK_PROG([FindCmd], [find], [], [], [$fp_prog_find])
632 rm -f conftest.txt conftest.out
633 AC_SUBST([FindCmd])[]dnl
639 # Find a Unix-like sort
640 AC_DEFUN([FP_PROG_SORT],
641 [AC_PATH_PROG([fp_prog_sort], [sort])
642 echo conwip > conftest.txt
643 $fp_prog_sort -f conftest.txt > conftest.out 2>&1
644 if grep 'conwip' conftest.out > /dev/null 2>&1 ; then
646 SortCmd="$fp_prog_sort"
648 # Summink else..pick next one.
649 AC_MSG_WARN([$fp_prog_sort looks like a non-*nix sort, ignoring it])
650 FP_CHECK_PROG([SortCmd], [sort], [], [], [$fp_prog_sort])
652 rm -f conftest.txt conftest.out
653 AC_SUBST([SortCmd])[]dnl
657 dnl FPTOOLS_NOCACHE_CHECK prints a message, then sets the
658 dnl values of the second argument to the result of running
659 dnl the commands given by the third. It does not cache its
660 dnl result, so it is suitable for checks which should be
663 AC_DEFUN([FPTOOLS_NOCACHE_CHECK],
664 [AC_MSG_CHECKING([$1])
666 AC_MSG_RESULT([$][$2])
670 dnl FPTOOLS_GHC_VERSION(version)
671 dnl FPTOOLS_GHC_VERSION(major, minor [, patchlevel])
672 dnl FPTOOLS_GHC_VERSION(version, major, minor, patchlevel)
674 dnl Test for version of installed ghc. Uses $GHC.
675 dnl [original version pinched from c2hs]
677 AC_DEFUN([FPTOOLS_GHC_VERSION],
678 [FPTOOLS_NOCACHE_CHECK([version of ghc], [fptools_version_of_ghc],
679 ["${WithGhc-ghc}" --version > conftestghc 2>&1
680 cat conftestghc >&AS_MESSAGE_LOG_FD
681 #Useless Use Of cat award...
682 fptools_version_of_ghc=`cat conftestghc | sed -n -e 's/, patchlevel *\([[0-9]]\)/.\1/;s/.* version \([[0-9]][[0-9.]]*\).*/\1/p'`
684 if test "[$]fptools_version_of_ghc" = ""
686 fptools_version_of_ghc='unknown'
688 fptools_version_of_ghc[_major]=`echo [$]fptools_version_of_ghc | sed -e 's/^\([[0-9]]\).*/\1/'`
689 fptools_version_of_ghc[_minor]=`echo [$]fptools_version_of_ghc | sed -e 's/^[[0-9]]\.\([[0-9]]*\).*/\1/'`
690 fptools_version_of_ghc[_pl]=`echo [$]fptools_version_of_ghc | sed -n -e 's/^[[0-9]]\.[[0-9]]*\.\([[0-9]]*\)/\1/p'`
692 if test "[$]fptools_version_of_ghc[_pl]" = ""
694 fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor]"
695 fptools_version_of_ghc[_pl]="0"
697 fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor].[$]fptools_version_of_ghc[_pl]"
701 [$1]="[$]fptools_version_of_ghc[_all]"
703 [$1]="[$]fptools_version_of_ghc[_major]"
704 [$2]="[$]fptools_version_of_ghc[_minor]"
706 [$1]="[$]fptools_version_of_ghc[_major]"
707 [$2]="[$]fptools_version_of_ghc[_minor]"
708 [$3]="[$]fptools_version_of_ghc[_pl]"
710 [$1]="[$]fptools_version_of_ghc[_all]"
711 [$2]="[$]fptools_version_of_ghc[_major]"
712 [$3]="[$]fptools_version_of_ghc[_minor]"
713 [$4]="[$]fptools_version_of_ghc[_pl]"
719 # FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
720 # ---------------------------------------------------------------------------------
721 # A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the
722 # additional flexibility of specifying the PROLOGUE and BODY.
723 AC_DEFUN([FP_CHECK_FUNC],
724 [AS_VAR_PUSHDEF([fp_func], [fp_cv_func_$1])dnl
725 AC_CACHE_CHECK([for $1], fp_func,
726 [AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])],
727 [AS_VAR_SET(fp_func, yes)],
728 [AS_VAR_SET(fp_func, no)])])
729 AS_IF([test AS_VAR_GET(fp_func) = yes],
730 [AC_DEFINE(AS_TR_CPP(HAVE_$1), [1],
731 [Define to 1 if you have the `]$1[' function.]) $4],
733 AS_VAR_POPDEF([fp_func])dnl
739 # Generates a DocBook XML V4.2 document in conftest.xml.
740 AC_DEFUN([FP_GEN_DOCBOOK_XML],
742 cat > conftest.xml << EOF
743 <?xml version="1.0" encoding="iso-8859-1"?>
744 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
745 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
747 <title>A DocBook Test Document</title>
748 <chapter id="id-one">
749 <title>A Chapter Title</title>
750 <para>This is a paragraph, referencing <xref linkend="id-two"/>.</para>
752 <chapter id="id-two">
753 <title>Another Chapter Title</title>
754 <para>This is another paragraph, referencing <xref linkend="id-one"/>.</para>
758 ]) # FP_GEN_DOCBOOK_XML
763 # Sets the output variable XsltprocCmd to the full path of the XSLT processor
764 # xsltproc. XsltprocCmd is empty if xsltproc could not be found.
765 AC_DEFUN([FP_PROG_XSLTPROC],
766 [AC_PATH_PROG([XsltprocCmd], [xsltproc])
767 if test -z "$XsltprocCmd"; then
768 AC_MSG_WARN([cannot find xsltproc in your PATH, you will not be able to build the documentation])
773 # FP_DIR_DOCBOOK_XSL(XSL-DIRS)
774 # ----------------------------
775 # Check which of the directories XSL-DIRS contains DocBook XSL stylesheets. The
776 # output variable DIR_DOCBOOK_XSL will contain the first usable directory or
777 # will be empty if none could be found.
778 AC_DEFUN([FP_DIR_DOCBOOK_XSL],
779 [AC_REQUIRE([FP_PROG_XSLTPROC])dnl
780 if test -n "$XsltprocCmd"; then
781 AC_CACHE_CHECK([for DocBook XSL stylesheet directory], fp_cv_dir_docbook_xsl,
783 fp_cv_dir_docbook_xsl=no
785 if $XsltprocCmd ${fp_var}/html/docbook.xsl conftest.xml > /dev/null 2>&1; then
786 fp_cv_dir_docbook_xsl=$fp_var
792 if test x"$fp_cv_dir_docbook_xsl" = xno; then
793 AC_MSG_WARN([cannot find DocBook XSL stylesheets, you will not be able to build the documentation])
796 DIR_DOCBOOK_XSL=$fp_cv_dir_docbook_xsl
798 AC_SUBST([DIR_DOCBOOK_XSL])
799 ])# FP_DIR_DOCBOOK_XSL
804 # Sets the output variable XmllintCmd to the full path of the XSLT processor
805 # xmllint. XmllintCmd is empty if xmllint could not be found.
806 AC_DEFUN([FP_PROG_XMLLINT],
807 [AC_PATH_PROG([XmllintCmd], [xmllint])
808 if test -z "$XmllintCmd"; then
809 AC_MSG_WARN([cannot find xmllint in your PATH, you will not be able to validate your documentation])
814 # FP_CHECK_DOCBOOK_DTD
815 # --------------------
816 AC_DEFUN([FP_CHECK_DOCBOOK_DTD],
817 [AC_REQUIRE([FP_PROG_XMLLINT])dnl
818 if test -n "$XmllintCmd"; then
819 AC_MSG_CHECKING([for DocBook DTD])
821 if $XmllintCmd --valid --noout conftest.xml > /dev/null 2>&1; then
824 AC_MSG_RESULT([failed])
825 AC_MSG_WARN([cannot find a DTD for DocBook XML V4.2, you will not be able to validate your documentation])
826 AC_MSG_WARN([check your XML_CATALOG_FILES environment variable and/or /etc/xml/catalog])
830 ])# FP_CHECK_DOCBOOK_DTD
835 # Generates a formatting objects document in conftest.fo.
836 AC_DEFUN([FP_GEN_FO],
838 cat > conftest.fo << EOF
839 <?xml version="1.0"?>
840 <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
841 <fo:layout-master-set>
842 <fo:simple-page-master master-name="blank">
844 </fo:simple-page-master>
845 </fo:layout-master-set>
846 <fo:page-sequence master-reference="blank">
847 <fo:flow flow-name="xsl-region-body">
860 # Set the output variable 'FopCmd' to the first working 'fop' in the current
861 # 'PATH'. Note that /usr/bin/fop is broken in SuSE 9.1 (unpatched), so try
862 # /usr/share/fop/fop.sh in that case (or no 'fop'), too.
863 AC_DEFUN([FP_PROG_FOP],
864 [AC_PATH_PROGS([FopCmd1], [fop fop.sh])
865 if test -n "$FopCmd1"; then
866 AC_CACHE_CHECK([for $FopCmd1 usability], [fp_cv_fop_usability],
868 if "$FopCmd1" -fo conftest.fo -ps conftest.ps > /dev/null 2>&1; then
869 fp_cv_fop_usability=yes
871 fp_cv_fop_usability=no
874 if test x"$fp_cv_fop_usability" = xyes; then
878 if test -z "$FopCmd"; then
879 AC_PATH_PROGS([FopCmd2], [fop.sh], , [/usr/share/fop])
886 # FP_PROG_FO_PROCESSOR
887 # --------------------
888 # Try to find an FO processor. PassiveTeX output is sometimes a bit strange, so
889 # try FOP first. Sets the output variables FopCmd, XmltexCmd, DvipsCmd, and
891 AC_DEFUN([FP_PROG_FO_PROCESSOR],
892 [AC_REQUIRE([FP_PROG_FOP])
893 AC_PATH_PROG([XmltexCmd], [xmltex])
894 AC_PATH_PROG([DvipsCmd], [dvips])
895 if test -z "$FopCmd"; then
896 if test -z "$XmltexCmd"; then
897 AC_MSG_WARN([cannot find an FO => DVI converter, you will not be able to build DVI or PostScript documentation])
899 if test -z "$DvipsCmd"; then
900 AC_MSG_WARN([cannot find a DVI => PS converter, you will not be able to build PostScript documentation])
903 AC_PATH_PROG([PdfxmltexCmd], [pdfxmltex])
904 if test -z "$PdfxmltexCmd"; then
905 AC_MSG_WARN([cannot find an FO => PDF converter, you will not be able to build PDF documentation])
907 elif test -z "$XmltexCmd"; then
908 AC_MSG_WARN([cannot find an FO => DVI converter, you will not be able to build DVI documentation])
910 ])# FP_PROG_FO_PROCESSOR
915 # Try to find a ghc-pkg matching the ghc mentioned in the environment variable
916 # WithGhc. If the latter is unset or no matching ghc-pkg can be found, try to
917 # find a plain ghc-pkg. Sets the output variable GhcPkgCmd.
918 AC_DEFUN([FP_PROG_GHC_PKG],
919 [AC_CACHE_CHECK([for ghc-pkg matching $WithGhc], fp_cv_matching_ghc_pkg,
920 [fp_ghc_pkg_guess=`echo $WithGhc | sed 's,ghc\(@<:@^/\\@:>@*\)$,ghc-pkg\1,'`
921 if "$fp_ghc_pkg_guess" -l > /dev/null 2>&1; then
922 fp_cv_matching_ghc_pkg=$fp_ghc_pkg_guess
924 fp_cv_matching_ghc_pkg=no
926 if test x"$fp_cv_matching_ghc_pkg" = xno; then
927 AC_PATH_PROG([GhcPkgCmd], [ghc-pkg])
929 GhcPkgCmd=$fp_cv_matching_ghc_pkg
930 fi])# FP_PROG_GHC_PKG
933 # FP_GHC_HAS_EDITLINE
934 # -------------------
935 AC_DEFUN([FP_GHC_HAS_EDITLINE],
936 [AC_REQUIRE([FP_PROG_GHC_PKG])
937 AC_CACHE_CHECK([whether ghc has editline package], [fp_cv_ghc_has_editline],
938 [if "${GhcPkgCmd-ghc-pkg}" --show-package editline >/dev/null 2>&1; then
939 fp_cv_ghc_has_editline=yes
941 fp_cv_ghc_has_editline=no
943 AC_SUBST([GhcHasEditline], [`echo $fp_cv_ghc_has_editline | sed 'y/yesno/YESNO/'`])
944 ])# FP_GHC_HAS_EDITLINE
949 # Determine which extra flags we need to pass gcc when we invoke it
950 # to compile .hc code.
952 # Some OSs (Mandrake Linux, in particular) configure GCC with
953 # -momit-leaf-frame-pointer on by default. If this is the case, we
954 # need to turn it off for mangling to work. The test is currently a
955 # bit crude, using only the version number of gcc.
957 # -fwrapv is needed for gcc to emit well-behaved code in the presence of
958 # integer wrap around. (Trac #952)
960 # -fno-unit-at-a-time or -fno-toplevel-reoder is necessary to avoid gcc
961 # reordering things in the module and confusing the manger and/or splitter.
964 AC_DEFUN([FP_GCC_EXTRA_FLAGS],
965 [AC_REQUIRE([FP_HAVE_GCC])
966 AC_CACHE_CHECK([for extra options to pass gcc when compiling via C], [fp_cv_gcc_extra_opts],
967 [fp_cv_gcc_extra_opts=
968 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
969 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fwrapv"],
971 case $TargetPlatform in
973 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.2],
974 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -mno-omit-leaf-frame-pointer"],
976 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [3.4],
977 [FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [4.2],
978 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-toplevel-reorder"],
979 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-unit-at-a-time"]
984 FP_COMPARE_VERSIONS([$fp_gcc_version], [-ge], [4.2],
985 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-toplevel-reorder"],
990 AC_SUBST([GccExtraViaCOpts],$fp_cv_gcc_extra_opts)
994 # FP_SETUP_PROJECT_VERSION
995 # ---------------------
996 AC_DEFUN([FP_SETUP_PROJECT_VERSION],
998 if test "$RELEASE" = "NO"; then
999 AC_MSG_CHECKING([for GHC version date])
1000 if test -f VERSION_DATE; then
1001 PACKAGE_VERSION=${PACKAGE_VERSION}.`cat VERSION_DATE`
1002 AC_MSG_RESULT(given $PACKAGE_VERSION)
1003 elif test -d _darcs; then
1005 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`
1006 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
1007 changequote([, ])dnl
1008 AC_MSG_ERROR([failed to detect version date: check that darcs is in your path])
1010 PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
1011 AC_MSG_RESULT(inferred $PACKAGE_VERSION)
1012 elif test -f VERSION; then
1013 PACKAGE_VERSION=`cat VERSION`
1014 AC_MSG_RESULT(given $PACKAGE_VERSION)
1016 AC_MSG_WARN([cannot determine snapshot version: no _darcs directory and no VERSION file])
1021 AC_SUBST([ProjectName], [$PACKAGE_NAME])
1022 AC_SUBST([ProjectVersion], [$PACKAGE_VERSION])
1024 # Split PACKAGE_VERSION into (possibly empty) parts
1025 VERSION_MAJOR=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
1026 VERSION_TMP=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
1027 VERSION_MINOR=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
1028 ProjectPatchLevel=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
1030 # Calculate project version as an integer, using 2 digits for minor version
1031 case $VERSION_MINOR in
1032 ?) ProjectVersionInt=${VERSION_MAJOR}0${VERSION_MINOR} ;;
1033 ??) ProjectVersionInt=${VERSION_MAJOR}${VERSION_MINOR} ;;
1034 *) AC_MSG_ERROR([bad minor version in $PACKAGE_VERSION]) ;;
1036 AC_SUBST([ProjectVersionInt])
1038 # The project patchlevel is zero unless stated otherwise
1039 test -z "$ProjectPatchLevel" && ProjectPatchLevel=0
1041 # Remove dots from the patch level; this allows us to have versions like 6.4.1.20050508
1042 ProjectPatchLevel=`echo $ProjectPatchLevel | sed 's/\.//'`
1044 AC_SUBST([ProjectPatchLevel])
1045 ])# FP_SETUP_PROJECT_VERSION
1048 # Check for a working timer_create(). We need a pretty detailed check
1049 # here, because there exist partially-working implementations of
1050 # timer_create() in certain versions of Linux (see bug #1933).
1052 AC_DEFUN([FP_CHECK_TIMER_CREATE],
1053 [AC_CACHE_CHECK([for a working timer_create(CLOCK_REALTIME)],
1054 [fptools_cv_timer_create_works],
1057 #ifdef HAVE_STDLIB_H
1063 #ifdef HAVE_SIGNAL_H
1066 #ifdef HAVE_UNISTD_H
1070 static volatile int tock = 0;
1071 static void handler(int i)
1076 static void timeout(int i)
1078 // timer_settime() has been known to hang, so just in case
1079 // we install a 1-second timeout (see #2257)
1083 int main(int argc, char *argv[])
1088 struct itimerspec it;
1089 struct sigaction action;
1092 ev.sigev_notify = SIGEV_SIGNAL;
1093 ev.sigev_signo = SIGVTALRM;
1095 action.sa_handler = handler;
1096 action.sa_flags = 0;
1097 sigemptyset(&action.sa_mask);
1098 if (sigaction(SIGVTALRM, &action, NULL) == -1) {
1099 fprintf(stderr,"SIGVTALRM problem\n");
1103 action.sa_handler = timeout;
1104 action.sa_flags = 0;
1105 sigemptyset(&action.sa_mask);
1106 if (sigaction(SIGALRM, &action, NULL) == -1) {
1107 fprintf(stderr,"SIGALRM problem\n");
1112 if (timer_create(CLOCK_PROCESS_CPUTIME_ID, &ev, &timer) != 0) {
1113 fprintf(stderr,"No CLOCK_PROCESS_CPUTIME_ID timer\n");
1117 it.it_value.tv_sec = 0;
1118 it.it_value.tv_nsec = 1;
1119 it.it_interval = it.it_value;
1120 if (timer_settime(timer, 0, &it, NULL) != 0) {
1121 fprintf(stderr,"settime problem\n");
1127 for(n = 3; n < 20000; n++){
1128 for(m = 2; m <= n/2; m++){
1129 if (!(n%m)) count++;
1136 fprintf(stderr,"no CLOCK_PROCESS_CPUTIME_ID signal\n");
1140 timer_delete(timer);
1142 if (timer_create(CLOCK_REALTIME, &ev, &timer) != 0) {
1143 fprintf(stderr,"No CLOCK_REALTIME timer\n");
1147 it.it_value.tv_sec = 0;
1148 it.it_value.tv_nsec = 1000000;
1149 it.it_interval = it.it_value;
1150 if (timer_settime(timer, 0, &it, NULL) != 0) {
1151 fprintf(stderr,"settime problem\n");
1160 fprintf(stderr,"no CLOCK_REALTIME signal\n");
1164 timer_delete(timer);
1169 [fptools_cv_timer_create_works=yes],
1170 [fptools_cv_timer_create_works=no])
1172 case $fptools_cv_timer_create_works in
1173 yes) AC_DEFINE([USE_TIMER_CREATE], 1,
1174 [Define to 1 if we can use timer_create(CLOCK_PROCESS_CPUTIME_ID,...)]);;
1180 AC_DEFUN([FP_ARG_GMP],
1182 AC_ARG_WITH([gmp-includes],
1183 [AC_HELP_STRING([--with-gmp-includes],
1184 [directory containing gmp.h])],
1185 [gmp_includes=$withval],
1186 [gmp_includes=NONE])
1188 AC_ARG_WITH([gmp-libraries],
1189 [AC_HELP_STRING([--with-gmp-libraries],
1190 [directory containing gmp library])],
1191 [gmp_libraries=$withval],
1192 [gmp_libraries=NONE])
1195 AC_DEFUN([CHECK_GMP],
1196 [AC_REQUIRE([AC_PROG_CPP])
1197 AC_REQUIRE([AC_PROG_CC])
1200 # FP_CHECK_MACOSX_DEPLOYMENT_TARGET
1201 # ---------------------------------
1202 AC_DEFUN([FP_CHECK_MACOSX_DEPLOYMENT_TARGET],
1204 if test "x$TargetOS_CPP-$TargetVendor_CPP" = "xdarwin-apple"; then
1205 AC_MSG_CHECKING([Mac OS X deployment target])
1206 case $FP_MACOSX_DEPLOYMENT_TARGET in
1208 10.4) MACOSX_DEPLOYMENT_VERSION=10.4
1209 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX10.4u.sdk
1211 10.4u) MACOSX_DEPLOYMENT_VERSION=10.4
1212 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX10.4u.sdk
1214 *) MACOSX_DEPLOYMENT_VERSION=$FP_MACOSX_DEPLOYMENT_TARGET
1215 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX${FP_MACOSX_DEPLOYMENT_TARGET}.sdk
1218 if test "x$FP_MACOSX_DEPLOYMENT_TARGET" = "xnone"; then
1221 if test ! -d $MACOSX_DEPLOYMENT_SDK; then
1222 AC_MSG_ERROR([Unknown deployment target $FP_MACOSX_DEPLOYMENT_TARGET])
1224 AC_MSG_RESULT([${MACOSX_DEPLOYMENT_VERSION} (${MACOSX_DEPLOYMENT_SDK})])
1229 # --------------------------------------------------------------
1230 # Calculate absolute path to build tree
1231 # --------------------------------------------------------------
1233 AC_DEFUN([FP_FIND_ROOT],[
1234 AC_MSG_CHECKING(for path to top of build tree)
1237 dnl make -C utils/pwd clean && make -C utils/pwd
1238 dnl except we don't want to have to know what make is called. Sigh.
1239 if test ! -f utils/pwd/pwd && test ! -f utils/pwd/pwd.exe; then
1245 $WithGhc -v0 --make pwd -o pwd
1249 hardtop=`utils/pwd/pwd forwardslash`
1251 if ! test -d "$hardtop"; then
1252 AC_MSG_ERROR([cannot determine current directory])
1255 dnl Remove common automounter nonsense
1257 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|'`
1261 AC_MSG_RESULT(${hardtop})
1263 # We don't support building in directories with spaces.
1265 *' '*) AC_MSG_ERROR([
1266 The build system does not support building in a directory containing
1267 space characters. Suggestion: move the build tree somewhere else.])