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/cmm/CmmParse.hs || test ! -f compiler/parser/ParserCore.hs
249 FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.16],
250 [AC_MSG_ERROR([Happy version 1.16 or later is required to compile GHC.])])[]
252 HappyVersion=$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([$fptools_cv_alex_version],[-lt],[2.1.0],
285 [AC_MSG_ERROR([Alex version 2.1.0 or later is required to compile GHC.])])[]
287 AlexVersion=$fptools_cv_alex_version;
288 AC_SUBST(AlexVersion)
293 dnl Check for windres and version.
295 dnl 2.17.50 doesn't work
298 AC_DEFUN([FPTOOLS_WINDRES],
300 if test "x$HostPlatform" = "xi386-unknown-mingw32"
302 AC_PATH_PROG(WindResCmd,windres,)
303 # Alex is passed to Cabal, so we need a native path
304 if test "${OSTYPE}" != "msys" && \
305 test "${WindResCmd}" != ""
307 # Canonicalise to <drive>:/path/to/gcc
308 WindResCmd=`cygpath -m ${WindResCmd}`
311 AC_CACHE_CHECK([for version of windres], fptools_cv_windres_version,
314 if test x"$WindResCmd" != x
316 fptools_cv_windres_version="`$WindResCmd --version |
318 sed -e 's/GNU windres[^0-9]* \([0-9\.]*\).*/\1/g'`" ;
320 fptools_cv_windres_version="";
324 FP_COMPARE_VERSIONS([$fptools_cv_windres_version],[-eq],[2.17.50],
325 [AC_MSG_ERROR([Your windres version isn't compatible with GHC. 2.15.91 and 2.18.50 are known to work.])])[]
326 WindResVersion=$fptools_cv_windres_version;
327 AC_SUBST(WindResVersion)
334 # Sets the output variable LdCmd to the (non-Cygwin version of the) full path
335 # of ld. Exits if no ld can be found
336 AC_DEFUN([FP_PROG_LD],
340 AC_PATH_PROG([fp_prog_ld_raw], [ld])
341 if test -z "$fp_prog_ld_raw"; then
342 AC_MSG_ERROR([cannot find ld in your PATH, no idea how to link])
344 LdCmd=$fp_prog_ld_raw
345 case $HostPlatform in
346 *mingw32) if test x${OSTYPE} != xmsys; then
347 LdCmd="`cygpath -w ${fp_prog_ld_raw} | sed -e 's@\\\\@/@g'`"
348 AC_MSG_NOTICE([normalized ld command to $LdCmd])
350 # Insist on >= ld-2.15.x, since earlier versions doesn't handle
351 # the generation of relocatable object files with large amounts
352 # of relocations correctly. (cf. HSbase.o splittage-hack)
353 fp_prog_ld_version=`${LdCmd} --version | sed -n '/GNU ld/p' | tr -cd 0-9 | cut -b1-3`
354 FP_COMPARE_VERSIONS([$fp_prog_ld_version],[-lt],[214],
355 [AC_MSG_ERROR([GNU ld version later than 2.14 required to compile GHC on Windows.])])[]dnl
367 # Sets the output variable LdXFlag to -x if ld supports this flag, otherwise the
368 # variable's value is empty.
369 AC_DEFUN([FP_PROG_LD_X],
370 [AC_REQUIRE([FP_PROG_LD])
371 AC_CACHE_CHECK([whether ld understands -x], [fp_cv_ld_x],
372 [echo 'foo() {}' > conftest.c
373 ${CC-cc} -c conftest.c
374 if ${LdCmd} -r -x -o conftest2.o conftest.o > /dev/null 2>&1; then
380 if test "$fp_cv_ld_x" = yes; then
391 # Sets the output variable LdIsGNULd to YES or NO, depending on whether it is
393 AC_DEFUN([FP_PROG_LD_IS_GNU],
394 [AC_REQUIRE([FP_PROG_LD])
395 AC_CACHE_CHECK([whether ld is GNU ld], [fp_cv_gnu_ld],
396 [if ${LdCmd} --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
401 AC_SUBST([LdIsGNULd], [`echo $fp_cv_gnu_ld | sed 'y/yesno/YESNO/'`])
402 ])# FP_PROG_LD_IS_GNU
407 # Sets fp_prog_ar_raw to the full path of ar and fp_prog_ar to a non-Cygwin
408 # version of it. Exits if no ar can be found
409 AC_DEFUN([FP_PROG_AR],
410 [AC_PATH_PROG([fp_prog_ar_raw], [ar])
411 if test -z "$fp_prog_ar_raw"; then
412 AC_MSG_ERROR([cannot find ar in your PATH, no idea how to make a library])
414 fp_prog_ar=$fp_prog_ar_raw
415 case $HostPlatform in
416 *mingw32) if test x${OSTYPE} != xmsys; then
417 fp_prog_ar="`cygpath -w ${fp_prog_ar_raw} | sed -e 's@\\\\@/@g'`"
418 AC_MSG_NOTICE([normalized ar command to $fp_prog_ar])
427 # Sets fp_prog_ar_is_gnu to yes or no, depending on whether it is GNU ar or not.
428 AC_DEFUN([FP_PROG_AR_IS_GNU],
429 [AC_REQUIRE([FP_PROG_AR])
430 AC_CACHE_CHECK([whether $fp_prog_ar_raw is GNU ar], [fp_cv_prog_ar_is_gnu],
431 [if $fp_prog_ar_raw --version 2> /dev/null | grep "GNU" > /dev/null 2>&1; then
432 fp_cv_prog_ar_is_gnu=yes
434 fp_cv_prog_ar_is_gnu=no
436 fp_prog_ar_is_gnu=$fp_cv_prog_ar_is_gnu
437 ])# FP_PROG_AR_IS_GNU
442 # Sets fp_prog_ar_args to the arguments for ar and the output variable ArCmd
443 # to a non-Cygwin invocation of ar including these arguments.
444 AC_DEFUN([FP_PROG_AR_ARGS],
445 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
446 AC_CACHE_CHECK([for ar arguments], [fp_cv_prog_ar_args],
448 # GNU ar needs special treatment: it appears to have problems with
449 # object files with the same name if you use the 's' modifier, but
450 # simple 'ar q' works fine, and doesn't need a separate ranlib.
451 if test $fp_prog_ar_is_gnu = yes; then
452 fp_cv_prog_ar_args="q"
455 for fp_var in clqsZ clqs cqs clq cq ; do
457 if $fp_prog_ar_raw $fp_var conftest.a conftest.dummy > /dev/null 2> /dev/null; then
458 fp_cv_prog_ar_args=$fp_var
463 if test -z "$fp_cv_prog_ar_args"; then
464 AC_MSG_ERROR([cannot figure out how to use your $fp_prog_ar_raw])
467 fp_prog_ar_args=$fp_cv_prog_ar_args
468 AC_SUBST([ArCmd], ["$fp_prog_ar $fp_prog_ar_args"])
473 # FP_PROG_AR_NEEDS_RANLIB
474 # -----------------------
475 # Sets the output variable RANLIB to "ranlib" if it is needed and found,
477 AC_DEFUN([FP_PROG_AR_NEEDS_RANLIB],
478 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
479 AC_REQUIRE([FP_PROG_AR_ARGS])
480 AC_REQUIRE([AC_PROG_CC])
481 AC_CACHE_CHECK([whether ranlib is needed], [fp_cv_prog_ar_needs_ranlib],
482 [if test $fp_prog_ar_is_gnu = yes; then
483 fp_cv_prog_ar_needs_ranlib=no
484 elif echo $TargetPlatform | grep "^.*-apple-darwin$" > /dev/null 2> /dev/null; then
485 # It's quite tedious to check for Apple's crazy timestamps in .a files,
487 fp_cv_prog_ar_needs_ranlib=yes
488 elif echo $fp_prog_ar_args | grep "s" > /dev/null 2> /dev/null; then
489 fp_cv_prog_ar_needs_ranlib=no
491 fp_cv_prog_ar_needs_ranlib=yes
493 if test $fp_cv_prog_ar_needs_ranlib = yes; then
499 ])# FP_PROG_AR_NEEDS_RANLIB
502 # FP_PROG_AR_SUPPORTS_INPUT
503 # -------------------------
504 # Sets the output variable ArSupportsInput to "-input" or "", depending on
505 # whether ar supports -input flag is supported or not.
506 AC_DEFUN([FP_PROG_AR_SUPPORTS_INPUT],
507 [AC_REQUIRE([FP_PROG_AR_IS_GNU])
508 AC_REQUIRE([FP_PROG_AR_ARGS])
509 AC_CACHE_CHECK([whether $fp_prog_ar_raw supports -input], [fp_cv_prog_ar_supports_input],
510 [fp_cv_prog_ar_supports_input=no
511 if test $fp_prog_ar_is_gnu = no; then
514 if FP_EVAL_STDERR([$fp_prog_ar_raw $fp_prog_ar_args conftest.a -input conftest.lst]) >/dev/null; then
515 test -s conftest.err || fp_cv_prog_ar_supports_input=yes
519 if test $fp_cv_prog_ar_supports_input = yes; then
520 ArSupportsInput="-input"
524 AC_SUBST([ArSupportsInput])
525 ])# FP_PROG_AR_SUPPORTS_INPUT
529 dnl AC_SHEBANG_PERL - can we she-bang perl?
531 AC_DEFUN([FPTOOLS_SHEBANG_PERL],
532 [AC_CACHE_CHECK([if your perl works in shell scripts], fptools_cv_shebang_perl,
537 (SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null)
538 if test $? -ne 69; then
539 fptools_cv_shebang_perl=yes
541 fptools_cv_shebang_perl=no
549 # Extra testing of the result AC_PROG_CC, testing the gcc version no. Sets the
550 # output variables HaveGcc and GccVersion.
551 AC_DEFUN([FP_HAVE_GCC],
552 [AC_REQUIRE([AC_PROG_CC])
553 if test -z "$GCC"; then
558 if test "$fp_have_gcc" = "NO" -a -d $srcdir/ghc; then
559 AC_MSG_ERROR([gcc is required])
562 AC_CACHE_CHECK([version of gcc], [fp_cv_gcc_version],
563 [if test "$fp_have_gcc" = "YES"; then
564 fp_cv_gcc_version="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [[^0-9]]*\([[0-9.]]*\).*/\1/g'`"
565 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [3.0],
566 [AC_MSG_ERROR([Need at least gcc version 3.0 (3.4+ recommended)])])
567 # See #2770: gcc 2.95 doesn't work any more, apparently. There probably
568 # isn't a very good reason for that, but for now just make configure
570 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-lt], [3.4], GccLT34=YES)
572 fp_cv_gcc_version="not-installed"
575 AC_SUBST([HaveGcc], [$fp_have_gcc])
576 AC_SUBST([GccVersion], [$fp_cv_gcc_version])
580 AC_DEFUN([FP_MINGW_GCC],
583 mingw*) AC_MSG_CHECKING([whether $CC is a mingw gcc])
584 if $CC -v 2>&1 | grep mingw >/dev/null; then
588 AC_MSG_ERROR([Please use --with-gcc to specify a mingw gcc])
594 dnl Small feature test for perl version. Assumes PerlCmd
595 dnl contains path to perl binary.
597 dnl (Perl versions prior to v5.6 does not contain the string "v5";
598 dnl instead they display version strings such as "version 5.005".)
600 AC_DEFUN([FPTOOLS_CHECK_PERL_VERSION],
601 [$PerlCmd -v >conftest.out 2>&1
602 if grep "v5" conftest.out >/dev/null 2>&1; then
605 AC_MSG_ERROR([your version of perl probably won't work, try upgrading it.])
611 # FP_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR,
612 # [VALUE-IF-NOT-FOUND], [PATH], [REJECT])
613 # -----------------------------------------------------
614 # HACK: A small wrapper around AC_CHECK_PROG, setting VARIABLE to the full path
615 # of PROG-TO-CHECK-FOR when found.
616 AC_DEFUN([FP_CHECK_PROG],
617 [AC_CHECK_PROG([$1], [$2], [$as_dir/$ac_word$ac_exec_ext], [$3], [$4], [$5])][]dnl
623 # Find a non-WinDoze version of the "find" utility.
624 AC_DEFUN([FP_PROG_FIND],
625 [AC_PATH_PROGS([fp_prog_find], [gfind find], find)
626 echo foo > conftest.txt
627 $fp_prog_find conftest.txt -print > conftest.out 2>&1
628 if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then
629 # OK, looks like a real "find".
630 case $HostPlatform in
632 if test x${OSTYPE} != xmsys
634 fp_prog_find="`cygpath --mixed ${fp_prog_find}`"
635 AC_MSG_NOTICE([normalized find command to $fp_prog_find])
639 FindCmd="$fp_prog_find"
641 # Found a poor WinDoze version of "find", ignore it.
642 AC_MSG_WARN([$fp_prog_find looks like a non-*nix find, ignoring it])
643 FP_CHECK_PROG([FindCmd], [find], [], [], [$fp_prog_find])
645 rm -f conftest.txt conftest.out
646 AC_SUBST([FindCmd])[]dnl
652 # Find a Unix-like sort
653 AC_DEFUN([FP_PROG_SORT],
654 [AC_PATH_PROG([fp_prog_sort], [sort])
655 echo conwip > conftest.txt
656 $fp_prog_sort -f conftest.txt > conftest.out 2>&1
657 if grep 'conwip' conftest.out > /dev/null 2>&1 ; then
659 SortCmd="$fp_prog_sort"
661 # Summink else..pick next one.
662 AC_MSG_WARN([$fp_prog_sort looks like a non-*nix sort, ignoring it])
663 FP_CHECK_PROG([SortCmd], [sort], [], [], [$fp_prog_sort])
665 rm -f conftest.txt conftest.out
666 AC_SUBST([SortCmd])[]dnl
670 dnl FPTOOLS_NOCACHE_CHECK prints a message, then sets the
671 dnl values of the second argument to the result of running
672 dnl the commands given by the third. It does not cache its
673 dnl result, so it is suitable for checks which should be
676 AC_DEFUN([FPTOOLS_NOCACHE_CHECK],
677 [AC_MSG_CHECKING([$1])
679 AC_MSG_RESULT([$][$2])
683 dnl FPTOOLS_GHC_VERSION(version)
684 dnl FPTOOLS_GHC_VERSION(major, minor [, patchlevel])
685 dnl FPTOOLS_GHC_VERSION(version, major, minor, patchlevel)
687 dnl Test for version of installed ghc. Uses $GHC.
688 dnl [original version pinched from c2hs]
690 AC_DEFUN([FPTOOLS_GHC_VERSION],
691 [FPTOOLS_NOCACHE_CHECK([version of ghc], [fptools_version_of_ghc],
692 ["${WithGhc-ghc}" --version > conftestghc 2>&1
693 cat conftestghc >&AS_MESSAGE_LOG_FD
694 #Useless Use Of cat award...
695 fptools_version_of_ghc=`cat conftestghc | sed -n -e 's/, patchlevel *\([[0-9]]\)/.\1/;s/.* version \([[0-9]][[0-9.]]*\).*/\1/p'`
697 if test "[$]fptools_version_of_ghc" = ""
699 fptools_version_of_ghc='unknown'
701 fptools_version_of_ghc[_major]=`echo [$]fptools_version_of_ghc | sed -e 's/^\([[0-9]]\).*/\1/'`
702 fptools_version_of_ghc[_minor]=`echo [$]fptools_version_of_ghc | sed -e 's/^[[0-9]]\.\([[0-9]]*\).*/\1/'`
703 fptools_version_of_ghc[_pl]=`echo [$]fptools_version_of_ghc | sed -n -e 's/^[[0-9]]\.[[0-9]]*\.\([[0-9]]*\)/\1/p'`
705 if test "[$]fptools_version_of_ghc[_pl]" = ""
707 fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor]"
708 fptools_version_of_ghc[_pl]="0"
710 fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor].[$]fptools_version_of_ghc[_pl]"
714 [$1]="[$]fptools_version_of_ghc[_all]"
716 [$1]="[$]fptools_version_of_ghc[_major]"
717 [$2]="[$]fptools_version_of_ghc[_minor]"
719 [$1]="[$]fptools_version_of_ghc[_major]"
720 [$2]="[$]fptools_version_of_ghc[_minor]"
721 [$3]="[$]fptools_version_of_ghc[_pl]"
723 [$1]="[$]fptools_version_of_ghc[_all]"
724 [$2]="[$]fptools_version_of_ghc[_major]"
725 [$3]="[$]fptools_version_of_ghc[_minor]"
726 [$4]="[$]fptools_version_of_ghc[_pl]"
732 # FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
733 # ---------------------------------------------------------------------------------
734 # A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the
735 # additional flexibility of specifying the PROLOGUE and BODY.
736 AC_DEFUN([FP_CHECK_FUNC],
737 [AS_VAR_PUSHDEF([fp_func], [fp_cv_func_$1])dnl
738 AC_CACHE_CHECK([for $1], fp_func,
739 [AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])],
740 [AS_VAR_SET(fp_func, yes)],
741 [AS_VAR_SET(fp_func, no)])])
742 AS_IF([test AS_VAR_GET(fp_func) = yes],
743 [AC_DEFINE(AS_TR_CPP(HAVE_$1), [1],
744 [Define to 1 if you have the `]$1[' function.]) $4],
746 AS_VAR_POPDEF([fp_func])dnl
752 # Generates a DocBook XML V4.2 document in conftest.xml.
754 # It took a lot of experimentation to find a document that will cause
755 # xsltproc to fail with an error code when the relevant
756 # stylesheets/DTDs are not found. I couldn't make xsltproc fail with
757 # a single-file document, it seems a multi-file document is needed.
760 AC_DEFUN([FP_GEN_DOCBOOK_XML],
761 [rm -f conftest.xml conftest-book.xml
762 cat > conftest.xml << EOF
763 <?xml version="1.0" encoding="iso-8859-1"?>
764 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
765 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [[
766 <!ENTITY conftest-book SYSTEM "conftest-book.xml">
772 cat >conftest-book.xml << EOF
773 <?xml version="1.0" encoding="iso-8859-1"?>
774 <title>A DocBook “Test Document”</title>
775 <chapter id="id-one">
776 <title>A Chapter Title</title>
777 <para>This is a paragraph, referencing <xref linkend="id-two"/>.</para>
779 <chapter id="id-two">
780 <title>Another Chapter Title</title>
781 <para>This is another paragraph, referencing <xref linkend="id-one"/>.</para>
784 ]) # FP_GEN_DOCBOOK_XML
789 # Sets the output variable DblatexCmd to the full path of dblatex,
790 # which we use for building PDF and PS docs.
791 # DblatexCmd is empty if dblatex could not be found.
792 AC_DEFUN([FP_PROG_DBLATEX],
793 [AC_PATH_PROG([DblatexCmd], [dblatex])
794 if test -z "$DblatexCmd"; then
795 AC_MSG_WARN([cannot find dblatex in your PATH, you will not be able to build the PDF and PS documentation])
802 # Sets the output variable XsltprocCmd to the full path of the XSLT processor
803 # xsltproc. XsltprocCmd is empty if xsltproc could not be found.
804 AC_DEFUN([FP_PROG_XSLTPROC],
805 [AC_PATH_PROG([XsltprocCmd], [xsltproc])
806 if test -z "$XsltprocCmd"; then
807 AC_MSG_WARN([cannot find xsltproc in your PATH, you will not be able to build the HTML documentation])
813 # ----------------------------
814 # Check that we can process a DocBook XML document to HTML using xsltproc.
815 AC_DEFUN([FP_DOCBOOK_XSL],
816 [AC_REQUIRE([FP_PROG_XSLTPROC])dnl
817 if test -n "$XsltprocCmd"; then
818 AC_CACHE_CHECK([for DocBook XSL stylesheet], fp_cv_dir_docbook_xsl,
820 fp_cv_dir_docbook_xsl=no
821 if $XsltprocCmd --nonet http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl conftest.xml > /dev/null 2>&1; then
822 fp_cv_dir_docbook_xsl=yes
826 if test x"$fp_cv_dir_docbook_xsl" = xno; then
827 AC_MSG_WARN([cannot find DocBook XSL stylesheets, you will not be able to build the documentation])
832 AC_SUBST([HAVE_DOCBOOK_XSL])
838 # Sets the output variable XmllintCmd to the full path of the XSLT processor
839 # xmllint. XmllintCmd is empty if xmllint could not be found.
840 AC_DEFUN([FP_PROG_XMLLINT],
841 [AC_PATH_PROG([XmllintCmd], [xmllint])
842 if test -z "$XmllintCmd"; then
843 AC_MSG_WARN([cannot find xmllint in your PATH, you will not be able to validate your documentation])
848 # FP_CHECK_DOCBOOK_DTD
849 # --------------------
850 AC_DEFUN([FP_CHECK_DOCBOOK_DTD],
851 [AC_REQUIRE([FP_PROG_XMLLINT])dnl
852 if test -n "$XmllintCmd"; then
853 AC_MSG_CHECKING([for DocBook DTD])
855 if $XmllintCmd --nonet --valid --noout conftest.xml ; then
858 AC_MSG_RESULT([failed])
859 AC_MSG_WARN([cannot find a DTD for DocBook XML V4.2, you will not be able to validate your documentation])
860 AC_MSG_WARN([check your XML_CATALOG_FILES environment variable and/or /etc/xml/catalog])
864 ])# FP_CHECK_DOCBOOK_DTD
869 # Generates a formatting objects document in conftest.fo.
870 AC_DEFUN([FP_GEN_FO],
872 cat > conftest.fo << EOF
873 <?xml version="1.0"?>
874 <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
875 <fo:layout-master-set>
876 <fo:simple-page-master master-name="blank">
878 </fo:simple-page-master>
879 </fo:layout-master-set>
880 <fo:page-sequence master-reference="blank">
881 <fo:flow flow-name="xsl-region-body">
894 # Set the output variable 'FopCmd' to the first working 'fop' in the current
895 # 'PATH'. Note that /usr/bin/fop is broken in SuSE 9.1 (unpatched), so try
896 # /usr/share/fop/fop.sh in that case (or no 'fop'), too.
897 AC_DEFUN([FP_PROG_FOP],
898 [AC_PATH_PROGS([FopCmd1], [fop fop.sh])
899 if test -n "$FopCmd1"; then
900 AC_CACHE_CHECK([for $FopCmd1 usability], [fp_cv_fop_usability],
902 if "$FopCmd1" -fo conftest.fo -ps conftest.ps > /dev/null 2>&1; then
903 fp_cv_fop_usability=yes
905 fp_cv_fop_usability=no
908 if test x"$fp_cv_fop_usability" = xyes; then
912 if test -z "$FopCmd"; then
913 AC_PATH_PROGS([FopCmd2], [fop.sh], , [/usr/share/fop])
922 # Sets the output variable HstagsCmd to the full Haskell tags program path.
923 # HstagsCmd is empty if no such program could be found.
924 AC_DEFUN([FP_PROG_HSTAGS],
925 [AC_PATH_PROG([HstagsCmd], [hasktags])
926 if test -z "$HstagsCmd"; then
927 AC_MSG_WARN([cannot find hasktags in your PATH, you will not be able to build the tags])
934 # Try to find a ghc-pkg matching the ghc mentioned in the environment variable
935 # WithGhc. If the latter is unset or no matching ghc-pkg can be found, try to
936 # find a plain ghc-pkg. Sets the output variable GhcPkgCmd.
937 AC_DEFUN([FP_PROG_GHC_PKG],
938 [AC_CACHE_CHECK([for ghc-pkg matching $WithGhc], fp_cv_matching_ghc_pkg,
939 [fp_ghc_pkg_guess=`echo $WithGhc | sed 's,ghc\(@<:@^/\\@:>@*\)$,ghc-pkg\1,'`
940 if "$fp_ghc_pkg_guess" -l > /dev/null 2>&1; then
941 fp_cv_matching_ghc_pkg=$fp_ghc_pkg_guess
942 elif "$fp_ghc_pkg_guess" list > /dev/null 2>&1; then
943 # from 6.10, ghc-pkg doesn't support the old -l syntax any more
944 fp_cv_matching_ghc_pkg=$fp_ghc_pkg_guess
946 fp_cv_matching_ghc_pkg=no
948 if test x"$fp_cv_matching_ghc_pkg" = xno; then
949 AC_PATH_PROG([GhcPkgCmd], [ghc-pkg])
951 GhcPkgCmd=$fp_cv_matching_ghc_pkg
952 fi])# FP_PROG_GHC_PKG
957 # Determine which extra flags we need to pass gcc when we invoke it
958 # to compile .hc code.
960 # Some OSs (Mandrake Linux, in particular) configure GCC with
961 # -momit-leaf-frame-pointer on by default. If this is the case, we
962 # need to turn it off for mangling to work. The test is currently a
963 # bit crude, using only the version number of gcc.
965 # -fwrapv is needed for gcc to emit well-behaved code in the presence of
966 # integer wrap around. (Trac #952)
968 # -fno-unit-at-a-time or -fno-toplevel-reoder is necessary to avoid gcc
969 # reordering things in the module and confusing the manger and/or splitter.
972 AC_DEFUN([FP_GCC_EXTRA_FLAGS],
973 [AC_REQUIRE([FP_HAVE_GCC])
974 AC_CACHE_CHECK([for extra options to pass gcc when compiling via C], [fp_cv_gcc_extra_opts],
975 [fp_cv_gcc_extra_opts=
976 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [3.4],
977 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fwrapv"],
979 case $TargetPlatform in
981 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [3.2],
982 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -mno-omit-leaf-frame-pointer"],
984 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [3.4],
985 [FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [4.2],
986 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-toplevel-reorder"],
987 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-unit-at-a-time"]
992 FP_COMPARE_VERSIONS([$fp_cv_gcc_version], [-ge], [4.2],
993 [fp_cv_gcc_extra_opts="$fp_cv_gcc_extra_opts -fno-toplevel-reorder"],
998 AC_SUBST([GccExtraViaCOpts],$fp_cv_gcc_extra_opts)
1002 # FP_SETUP_PROJECT_VERSION
1003 # ---------------------
1004 AC_DEFUN([FP_SETUP_PROJECT_VERSION],
1006 if test "$RELEASE" = "NO"; then
1007 AC_MSG_CHECKING([for GHC version date])
1008 if test -f VERSION_DATE; then
1009 PACKAGE_VERSION=${PACKAGE_VERSION}.`cat VERSION_DATE`
1010 AC_MSG_RESULT(given $PACKAGE_VERSION)
1011 elif test -d .git; then
1013 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/"`
1014 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
1015 changequote([, ])dnl
1016 AC_MSG_ERROR([failed to detect version date: check that git is in your path])
1018 PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
1019 AC_MSG_RESULT(inferred $PACKAGE_VERSION)
1020 elif test -d _darcs; then
1021 # TODO: Remove this branch after conversion to Git
1023 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" | ${SortCmd} -n | tail -1`
1024 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
1025 changequote([, ])dnl
1026 AC_MSG_ERROR([failed to detect version date: check that darcs is in your path])
1028 PACKAGE_VERSION=${PACKAGE_VERSION}.$ver_date
1029 AC_MSG_RESULT(inferred $PACKAGE_VERSION)
1030 elif test -f VERSION; then
1031 PACKAGE_VERSION=`cat VERSION`
1032 AC_MSG_RESULT(given $PACKAGE_VERSION)
1034 AC_MSG_WARN([cannot determine snapshot version: no .git or _darcs directory and no VERSION file])
1039 AC_SUBST([ProjectName], [$PACKAGE_NAME])
1040 AC_SUBST([ProjectVersion], [$PACKAGE_VERSION])
1042 # Split PACKAGE_VERSION into (possibly empty) parts
1043 VERSION_MAJOR=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
1044 VERSION_TMP=`echo $PACKAGE_VERSION | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
1045 VERSION_MINOR=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\1'/`
1046 ProjectPatchLevel=`echo $VERSION_TMP | sed 's/^\(@<:@^.@:>@*\)\(\.\{0,1\}\(.*\)\)$/\3'/`
1048 # Calculate project version as an integer, using 2 digits for minor version
1049 case $VERSION_MINOR in
1050 ?) ProjectVersionInt=${VERSION_MAJOR}0${VERSION_MINOR} ;;
1051 ??) ProjectVersionInt=${VERSION_MAJOR}${VERSION_MINOR} ;;
1052 *) AC_MSG_ERROR([bad minor version in $PACKAGE_VERSION]) ;;
1054 AC_SUBST([ProjectVersionInt])
1056 # The project patchlevel is zero unless stated otherwise
1057 test -z "$ProjectPatchLevel" && ProjectPatchLevel=0
1059 # Remove dots from the patch level; this allows us to have versions like 6.4.1.20050508
1060 ProjectPatchLevel=`echo $ProjectPatchLevel | sed 's/\.//'`
1062 AC_SUBST([ProjectPatchLevel])
1063 ])# FP_SETUP_PROJECT_VERSION
1066 # Check for a working timer_create(). We need a pretty detailed check
1067 # here, because there exist partially-working implementations of
1068 # timer_create() in certain versions of Linux (see bug #1933).
1070 AC_DEFUN([FP_CHECK_TIMER_CREATE],
1071 [AC_CACHE_CHECK([for a working timer_create(CLOCK_REALTIME)],
1072 [fptools_cv_timer_create_works],
1075 #ifdef HAVE_STDLIB_H
1081 #ifdef HAVE_SIGNAL_H
1084 #ifdef HAVE_UNISTD_H
1088 static volatile int tock = 0;
1089 static void handler(int i)
1094 static void timeout(int i)
1096 // timer_settime() has been known to hang, so just in case
1097 // we install a 1-second timeout (see #2257)
1101 int main(int argc, char *argv[])
1106 struct itimerspec it;
1107 struct sigaction action;
1110 ev.sigev_notify = SIGEV_SIGNAL;
1111 ev.sigev_signo = SIGVTALRM;
1113 action.sa_handler = handler;
1114 action.sa_flags = 0;
1115 sigemptyset(&action.sa_mask);
1116 if (sigaction(SIGVTALRM, &action, NULL) == -1) {
1117 fprintf(stderr,"SIGVTALRM problem\n");
1121 action.sa_handler = timeout;
1122 action.sa_flags = 0;
1123 sigemptyset(&action.sa_mask);
1124 if (sigaction(SIGALRM, &action, NULL) == -1) {
1125 fprintf(stderr,"SIGALRM problem\n");
1130 if (timer_create(CLOCK_PROCESS_CPUTIME_ID, &ev, &timer) != 0) {
1131 fprintf(stderr,"No CLOCK_PROCESS_CPUTIME_ID timer\n");
1135 it.it_value.tv_sec = 0;
1136 it.it_value.tv_nsec = 1;
1137 it.it_interval = it.it_value;
1138 if (timer_settime(timer, 0, &it, NULL) != 0) {
1139 fprintf(stderr,"settime problem\n");
1145 for(n = 3; n < 20000; n++){
1146 for(m = 2; m <= n/2; m++){
1147 if (!(n%m)) count++;
1154 fprintf(stderr,"no CLOCK_PROCESS_CPUTIME_ID signal\n");
1158 timer_delete(timer);
1160 if (timer_create(CLOCK_REALTIME, &ev, &timer) != 0) {
1161 fprintf(stderr,"No CLOCK_REALTIME timer\n");
1165 it.it_value.tv_sec = 0;
1166 it.it_value.tv_nsec = 1000000;
1167 it.it_interval = it.it_value;
1168 if (timer_settime(timer, 0, &it, NULL) != 0) {
1169 fprintf(stderr,"settime problem\n");
1178 fprintf(stderr,"no CLOCK_REALTIME signal\n");
1182 timer_delete(timer);
1187 [fptools_cv_timer_create_works=yes],
1188 [fptools_cv_timer_create_works=no])
1190 case $fptools_cv_timer_create_works in
1191 yes) AC_DEFINE([USE_TIMER_CREATE], 1,
1192 [Define to 1 if we can use timer_create(CLOCK_PROCESS_CPUTIME_ID,...)]);;
1198 AC_DEFUN([FP_ARG_GMP],
1200 AC_ARG_WITH([gmp-includes],
1201 [AC_HELP_STRING([--with-gmp-includes],
1202 [directory containing gmp.h])],
1203 [gmp_includes=$withval],
1204 [gmp_includes=NONE])
1206 AC_ARG_WITH([gmp-libraries],
1207 [AC_HELP_STRING([--with-gmp-libraries],
1208 [directory containing gmp library])],
1209 [gmp_libraries=$withval],
1210 [gmp_libraries=NONE])
1213 AC_DEFUN([CHECK_GMP],
1214 [AC_REQUIRE([AC_PROG_CPP])
1215 AC_REQUIRE([AC_PROG_CC])
1218 # FP_CHECK_MACOSX_DEPLOYMENT_TARGET
1219 # ---------------------------------
1220 AC_DEFUN([FP_CHECK_MACOSX_DEPLOYMENT_TARGET],
1222 if test "x$TargetOS_CPP-$TargetVendor_CPP" = "xdarwin-apple"; then
1223 AC_MSG_CHECKING([Mac OS X deployment target])
1224 case $FP_MACOSX_DEPLOYMENT_TARGET in
1226 10.4) MACOSX_DEPLOYMENT_VERSION=10.4
1227 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX10.4u.sdk
1229 10.4u) MACOSX_DEPLOYMENT_VERSION=10.4
1230 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX10.4u.sdk
1232 *) MACOSX_DEPLOYMENT_VERSION=$FP_MACOSX_DEPLOYMENT_TARGET
1233 MACOSX_DEPLOYMENT_SDK=/Developer/SDKs/MacOSX${FP_MACOSX_DEPLOYMENT_TARGET}.sdk
1236 if test "x$FP_MACOSX_DEPLOYMENT_TARGET" = "xnone"; then
1239 if test ! -d $MACOSX_DEPLOYMENT_SDK; then
1240 AC_MSG_ERROR([Unknown deployment target $FP_MACOSX_DEPLOYMENT_TARGET])
1242 AC_MSG_RESULT([${MACOSX_DEPLOYMENT_VERSION} (${MACOSX_DEPLOYMENT_SDK})])
1247 # --------------------------------------------------------------
1248 # Calculate absolute path to build tree
1249 # --------------------------------------------------------------
1251 AC_DEFUN([FP_FIND_ROOT],[
1252 AC_MSG_CHECKING(for path to top of build tree)
1255 dnl make -C utils/ghc-pwd clean && make -C utils/ghc-pwd
1256 dnl except we don't want to have to know what make is called. Sigh.
1257 if test ! -f utils/ghc-pwd/ghc-pwd && test ! -f utils/ghc-pwd/ghc-pwd.exe; then
1263 $WithGhc -v0 --make ghc-pwd -o ghc-pwd
1267 hardtop=`utils/ghc-pwd/ghc-pwd`
1269 if ! test -d "$hardtop"; then
1270 AC_MSG_ERROR([cannot determine current directory])
1273 dnl Remove common automounter nonsense
1275 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|'`
1279 AC_MSG_RESULT(${hardtop})
1281 # We don't support building in directories with spaces.
1283 *' '*) AC_MSG_ERROR([
1284 The build system does not support building in a directory containing
1285 space characters. Suggestion: move the build tree somewhere else.])