[project @ 2004-03-05 14:12:13 by stolz]
[ghc.git] / aclocal.m4
1 # Extra autoconf macros for the Glasgow fptools
2 #
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.
5
6
7 # FP_EVAL_STDERR(COMMAND)
8 # ------------------------
9 # Eval COMMAND, save its stderr (without lines resulting from shell tracing)
10 # into the file conftest.err and the exit status in the variable fp_status.
11 AC_DEFUN([FP_EVAL_STDERR],
12 [{ (eval $1) 2>conftest.er1
13   fp_status=$?
14   grep -v '^ *+' conftest.er1 >conftest.err
15   rm -f conftest.er1
16   (exit $fp_status); }[]dnl
17 ])# FP_EVAL_STDERR
18
19
20 # FP_CHECK_FLAG(FLAG, [ACTION-IF-SUPPORTED], [ACTION-IF-NOT-SUPPORTED])
21 # -----------------------------------------------------------------------
22 # Check to see whether the compiler for the current language supports a
23 # particular option.
24 #
25 # Implementation note: When given an unkown option, GCC issues an warning on
26 # stderr only, but returns an exit value of 0 nevertheless. Consequently we have
27 # to check stderr *and* the exit value.
28 #
29 # Used by ghc.
30 AC_DEFUN(FP_CHECK_FLAG,
31 [AC_LANG_COMPILER_REQUIRE()dnl
32 AC_LANG_CASE([C],          [fp_compiler="$CC"  m4_pushdef([fp_Flags], [CFLAGS])],
33              [C++],        [fp_compiler="$CXX" m4_pushdef([fp_Flags], [CXXFLAGS])],
34              [Fortran 77], [fp_compiler="$F77" m4_pushdef([fp_Flags], [FFLAGS])])
35 m4_pushdef([fp_Cache], [fp_cv_[]fp_Flags[]AS_TR_SH([$1])])[]dnl
36 AC_CACHE_CHECK([whether $fp_compiler accepts $1], [fp_Cache],
37 [AC_LANG_CONFTEST([AC_LANG_PROGRAM()])
38 fp_save_flags="$fp_Flags"
39 fp_Flags="$fp_Flags $1"
40 fp_Cache=no
41 if FP_EVAL_STDERR([$ac_compile conftest.$ac_ext]) >/dev/null; then
42   test -s conftest.err || fp_Cache=yes
43 fi
44 fp_Flags="$fp_save_flags"
45 rm -f conftest.err conftest.$ac_ext])
46 AS_IF([test $fp_Cache = yes], [$2], [$3])[]dnl
47 m4_popdef([fp_Cache])[]dnl
48 m4_popdef([fp_Flags])[]dnl
49 ])# FP_CHECK_FLAG
50
51
52 # FP_PROG_CONTEXT_DIFF
53 # --------------------
54 # Figure out how to do context diffs. Sets the output variable ContextDiffCmd.
55 #
56 # Note: NeXTStep thinks diff'ing a file against itself is "trouble".
57 #
58 # Used by ghc, glafp-utils/ltx, and glafp-utils/runstdtest.
59 AC_DEFUN([FP_PROG_CONTEXT_DIFF],
60 [AC_CACHE_CHECK([for a working context diff], [fp_cv_context_diff],
61 [echo foo > conftest1
62 echo foo > conftest2
63 fp_cv_context_diff=no
64 for fp_var in '-C 1' '-c1'
65 do
66   if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then
67     fp_cv_context_diff="diff $fp_var"
68     break
69   fi
70 done])
71 if test x"$fp_cv_context_diff" = xno; then
72    AC_MSG_ERROR([cannot figure out how to do context diffs])
73 fi
74 AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff])
75 ])# FP_PROG_CONTEXT_DIFF
76
77
78 # FP_DECL_ALTZONE
79 # -------------------
80 # Defines HAVE_DECL_ALTZONE to 1 if declared, 0 otherwise.
81 #
82 # Used by base package.
83 AC_DEFUN([FP_DECL_ALTZONE],
84 [AC_REQUIRE([AC_HEADER_TIME])dnl
85 AC_CHECK_HEADERS([sys/time.h])
86 AC_CHECK_DECLS([altzone], [], [],[#if TIME_WITH_SYS_TIME
87 # include <sys/time.h>
88 # include <time.h>
89 #else
90 # if HAVE_SYS_TIME_H
91 #  include <sys/time.h>
92 # else
93 #  include <time.h>
94 # endif
95 #endif])
96 ])# FP_DECL_ALTZONE
97
98
99 # FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
100 # ---------------------------------------------------------
101 # Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for
102 # compilation. Execute IF-FAILS when unable to determine the value. Works for
103 # cross-compilation, too.
104 #
105 # Implementation note: We are lazy and use an internal autoconf macro, but it
106 # is supported in autoconf versions 2.50 up to the actual 2.57, so there is
107 # little risk.
108 AC_DEFUN([FP_COMPUTE_INT],
109 [_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl
110 ])# FP_COMPUTE_INT
111
112
113 # FP_CHECK_ALIGNMENT(TYPE, [IGNORED], [INCLUDES = DEFAULT-INCLUDES])
114 # ------------------------------------------------------------------
115 # A variation of AC_CHECK_SIZEOF for computing the alignment restrictions of a
116 # given type. Defines ALIGNMENT_TYPE.
117 AC_DEFUN([FP_CHECK_ALIGNMENT],
118 [AS_LITERAL_IF([$1], [],
119                [AC_FATAL([$0: requires literal arguments])])[]dnl
120 AC_CHECK_TYPE([$1], [], [], [$3])[]dnl
121 m4_pushdef([fp_Cache], [AS_TR_SH([fp_cv_alignment_$1])])[]dnl
122 AC_CACHE_CHECK([alignment of $1], [fp_Cache],
123 [if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then
124   FP_COMPUTE_INT([(long) (&((struct { char c; $1 ty; } *)0)->ty)],
125                  [fp_Cache],
126                  [AC_INCLUDES_DEFAULT([$3])],
127                  [AC_MSG_ERROR([cannot compute alignment ($1)
128 See `config.log' for more details.], [77])])
129 else
130   fp_Cache=0
131 fi])[]dnl
132 AC_DEFINE_UNQUOTED(AS_TR_CPP(alignment_$1), $fp_Cache, [The alignment of a `$1'.])[]dnl
133 m4_popdef([fp_Cache])[]dnl
134 ])# FP_CHECK_ALIGNMENT
135
136
137 # FP_CHECK_CONST(EXPRESSION, [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1])
138 # ---------------------------------------------------------------------------------
139 # Defines CONST_EXPRESSION to the value of the compile-time EXPRESSION, using
140 # INCLUDES. If the value cannot be determined, use VALUE-IF-FAIL.
141 AC_DEFUN([FP_CHECK_CONST],
142 [AS_VAR_PUSHDEF([fp_Cache], [fp_cv_const_$1])[]dnl
143 AC_CACHE_CHECK([value of $1], fp_Cache,
144 [FP_COMPUTE_INT([$1], fp_check_const_result, [AC_INCLUDES_DEFAULT([$2])],
145                 [fp_check_const_result=m4_default([$3], ['-1'])])
146 AS_VAR_SET(fp_Cache, [$fp_check_const_result])])[]dnl
147 AC_DEFINE_UNQUOTED(AS_TR_CPP([CONST_$1]), AS_VAR_GET(fp_Cache), [The value of $1.])[]dnl
148 AS_VAR_POPDEF([fp_Cache])[]dnl
149 ])# FP_CHECK_CONST
150
151
152 # FP_CHECK_CONSTS_TEMPLATE(EXPRESSION...)
153 # ----------------------------------
154 # autoheader helper for FP_CHECK_CONSTS
155 m4_define([FP_CHECK_CONSTS_TEMPLATE],
156 [AC_FOREACH([fp_Const], [$1],
157   [AH_TEMPLATE(AS_TR_CPP(CONST_[]fp_Const),
158                [The value of ]fp_Const[.])])[]dnl
159 ])# FP_CHECK_CONSTS_TEMPLATE
160
161
162 # FP_CHECK_CONSTS(EXPRESSION..., [INCLUDES = DEFAULT-INCLUDES], [VALUE-IF-FAIL = -1])
163 # -------------------------------------------------------------------------------------
164 # List version of FP_CHECK_CONST
165 AC_DEFUN(FP_CHECK_CONSTS,
166 [FP_CHECK_CONSTS_TEMPLATE([$1])dnl
167 for fp_const_name in $1
168 do
169 FP_CHECK_CONST([$fp_const_name], [$2], [$3])
170 done
171 ])# FP_CHECK_CONSTS
172
173
174 dnl ** check for leading underscores in symbol names
175 dnl 
176 dnl Test for determining whether symbol names have a leading
177 dnl underscore.
178 dnl 
179 dnl We assume that they _haven't_ if anything goes wrong.
180 dnl
181 dnl Some nlist implementations seem to try to be compatible by ignoring
182 dnl a leading underscore sometimes (eg. FreeBSD).  We therefore have
183 dnl to work around this by checking for *no* leading underscore first.
184 dnl Sigh.  --SDM
185 dnl
186 dnl Similarly on OpenBSD, but this test doesn't help. -- dons
187 dnl
188 AC_DEFUN(FPTOOLS_UNDERSCORE,
189 [AC_CHECK_LIB(elf, nlist, LIBS="-lelf $LIBS")dnl
190 AC_CACHE_CHECK([leading underscore in symbol names], fptools_cv_lead_uscore,
191
192 dnl
193 dnl Hack!: nlist() under Digital UNIX insist on there being an _,
194 dnl but symbol table listings shows none. What is going on here?!?
195 dnl
196 dnl Another hack: cygwin doesn't come with nlist.h , so we hardwire
197 dnl the underscoredness of that "platform"
198 changequote(<<, >>)dnl
199 <<
200 case $HostPlatform in
201 *openbsd*) # x86 openbsd is ELF from 3.4 >, meaning no leading uscore
202     case $build in
203         i386-*2\.[[0-9]] | i386-*3\.[[0-3]] ) fptools_cv_lead_uscore='yes' ;;
204         *)      fptools_cv_lead_uscore='no' ;;
205     esac ;;
206 alpha-dec-osf*) fptools_cv_lead_uscore='no';;
207 *cygwin32) fptools_cv_lead_uscore='yes';;
208 *mingw32) fptools_cv_lead_uscore='yes';;
209 *) >>
210 changequote([, ])dnl
211 AC_TRY_RUN([#ifdef HAVE_NLIST_H
212 #include <nlist.h>
213 changequote(<<, >>)dnl
214 <<
215 struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
216 struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
217 #endif
218
219 main(argc, argv)
220 int argc;
221 char **argv;
222 {
223 #ifdef HAVE_NLIST_H
224     if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
225         exit(1);
226     if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
227         exit(0);>>
228 changequote([, ])dnl
229 #endif
230     exit(1);
231 }], fptools_cv_lead_uscore=yes, fptools_cv_lead_uscore=no, fptools_cv_lead_uscore=NO)
232 ;;
233 esac);
234 LeadingUnderscore=`echo $fptools_cv_lead_uscore | sed 'y/yesno/YESNO/'`
235 AC_SUBST(LeadingUnderscore)
236 case $LeadingUnderscore in
237 YES) AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.]);;
238 esac
239 ])
240
241
242 # FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
243 # ----------------------------------------------------------------------------------
244 # Compare dotted version numbers VERSION1 and VERSION2 lexicographically according
245 # to TEST (one of -eq, -ne, -lt, -le, -gt, or -ge).
246 AC_DEFUN([FP_COMPARE_VERSIONS],
247 [fp_version1=$1; fp_version2=$3
248 fp_save_IFS=$IFS; IFS='.'
249 while test x"$fp_version1" != x || test x"$fp_version2" != x
250 do
251
252   set dummy $fp_version1; shift
253   fp_num1=""
254   test $[@%:@] = 0 || { fp_num1="[$]1"; shift; }
255   test x"$fp_num1" = x && fp_num1="0"
256   fp_version1="[$]*"
257
258   set dummy $fp_version2; shift
259   fp_num2=""
260   test $[@%:@] = 0 || { fp_num2="[$]1"; shift; }
261   test x"$fp_num2" = x && fp_num2="0"
262   fp_version2="[$]*"
263
264   test "$fp_num1" = "$fp_num2" || break;
265 done
266 IFS=$fp_save_IFS
267 AS_IF([test "$fp_num1" $2 "$fp_num2"], [$4], [$5])[]dnl
268 ])# FP_COMPARE_VERSIONS
269
270
271 dnl
272 dnl Check for GreenCard and version.
273 dnl
274 AC_DEFUN(FPTOOLS_GREENCARD,
275 [
276 AC_PATH_PROG(GreenCardCmd,greencard)
277 AC_CACHE_CHECK([for version of greencard], fptools_cv_greencard_version,
278 changequote(, )dnl
279 [if test x"$GreenCardCmd" != x; then
280    fptools_cv_greencard_version="`$GreenCardCmd --version |
281                           grep 'version' | sed -e 's/greencard. version \([^ ]*\).*/\1/g'`"
282 else
283    fptools_cv_greencard_version=""
284 fi
285 changequote([, ])dnl
286 ])
287 FP_COMPARE_VERSIONS([$fptools_cv_greencard_version],[-lt],[$1],
288   [AC_MSG_ERROR([greencard version $1 or later is required (found '$fptools_cv_greencard_version')])])[]dnl
289 GreenCardVersion=$fptools_cv_greencard_version
290 AC_SUBST(GreenCardVersion)
291 ])
292
293 dnl
294 dnl Check for Happy and version.  If we're building GHC, then we need
295 dnl at least Happy version 1.14.  If there's no installed Happy, we look
296 dnl for a happy source tree and point the build system at that instead.
297 dnl
298 AC_DEFUN(FPTOOLS_HAPPY,
299 [
300 if test -d $srcdir/happy; then
301    SrcTreeHappyCmd=$hardtop/happy/src/happy-inplace
302 fi
303 if test x"$UseSrcTreeHappy" = xYES; then
304   HappyCmd=$SrcTreeHappyCmd
305 else
306   AC_PATH_PROG(HappyCmd,happy,$SrcTreeHappyCmd)
307 fi
308 AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
309 changequote(, )dnl
310 [if test x"$HappyCmd" = x"$SrcTreeHappyCmd" -a -e $srcdir/happy/mk/version.mk; then
311    fptools_cv_happy_version=`grep '^ProjectVersion[     ]*=' $srcdir/happy/mk/version.mk | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`;
312 elif test x"$HappyCmd" != x; then
313    fptools_cv_happy_version="`$HappyCmd -v |
314                           grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'`" ;
315 else
316    fptools_cv_happy_version="";
317 fi;
318 changequote([, ])dnl
319 ])
320 if test -d $srcdir/ghc -a ! -f $srcdir/ghc/compiler/parser/Parser.hs; then
321   FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.14],
322   [AC_MSG_ERROR([Happy version 1.14 or later is required to compile GHC.])])[]dnl
323 fi
324 HappyVersion=$fptools_cv_happy_version;
325 AC_SUBST(HappyVersion)
326 ])
327
328 dnl
329 dnl Check for Haddock and version.  If there's no installed Haddock, we look
330 dnl for a haddock source tree and point the build system at that instead.
331 dnl
332 AC_DEFUN(FPTOOLS_HADDOCK,
333 [
334 if test -d $srcdir/haddock; then
335    SrcTreeHaddockCmd=$hardtop/haddock/src/haddock-inplace
336 fi
337 if test x"$UseSrcTreeHaddock" = xYES; then
338   HaddockCmd=$SrcTreeHaddockCmd
339 else
340   AC_PATH_PROG(HaddockCmd,haddock,$SrcTreeHaddockCmd)
341 fi
342 dnl Darn, I forgot to make Haddock print out its version number when
343 dnl invoked with -v.  We could try generating some HTML and grepping
344 dnl through that to find the version number, but I think we'll make
345 dnl do without it for now.
346 ])
347
348 dnl
349 dnl Check for Alex and version.  If we're building GHC, then we need
350 dnl at least Alex version 2.0.  If there's no installed Alex, we look
351 dnl for a alex source tree and point the build system at that instead.
352 dnl
353 AC_DEFUN(FPTOOLS_ALEX,
354 [
355 if test -d $srcdir/alex; then
356    SrcTreeAlexCmd=$hardtop/alex/src/alex-inplace
357 fi
358 if test x"$UseSrcTreeAlex" = xYES; then
359   AlexCmd=$SrcTreeAlexCmd
360 else
361   AC_PATH_PROG(AlexCmd,alex,$SrcTreeAlexCmd)
362 fi
363 AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
364 changequote(, )dnl
365 [if test x"$AlexCmd" = x"$SrcTreeAlexCmd"; then
366    fptools_cv_alex_version=`grep '^ProjectVersion[      ]*=' $srcdir/alex/mk/version.mk | sed 's/.*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/g'`;
367 elif test x"$AlexCmd" != x; then
368    fptools_cv_alex_version="`$AlexCmd -v |
369                           grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'`" ;
370 else
371    fptools_cv_alex_version="";
372 fi;
373 changequote([, ])dnl
374 ])
375 if test -d $srcdir/ghc -a ! -f $srcdir/ghc/compiler/parser/Lexer.hs; then
376   FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[2.0],
377   [AC_MSG_ERROR([Alex version 2.0 or later is required to compile GHC.])])[]dnl
378 fi
379 AlexVersion=$fptools_cv_alex_version;
380 AC_SUBST(AlexVersion)
381 ])
382
383
384 dnl
385 dnl Check whether ld supports -x
386 dnl
387 AC_DEFUN(FPTOOLS_LD_X,
388 [AC_CACHE_CHECK([whether ld understands -x], fptools_cv_ld_x,
389 [
390 echo 'foo() {}' > conftest.c
391 ${CC-cc} -c conftest.c
392 if ${LdCmd} -r -x -o foo.o conftest.o; then
393    fptools_cv_ld_x=yes
394 else
395    fptools_cv_ld_x=no
396 fi
397 rm -rf conftest.c conftest.o foo.o
398 ])
399 if test "$fptools_cv_ld_x" = yes; then
400         LdXFlag=-x
401 else
402         LdXFlag=
403 fi
404 AC_SUBST(LdXFlag)
405 ])
406
407
408 dnl *** Checking for ar and its arguments + whether we need ranlib.
409 dnl
410 dnl ArCmd, ArSupportsInput and RANLIB are AC_SUBST'ed
411 dnl On Digital UNIX, we test for the -Z (compress) and
412 dnl -input (take list of files from external file) flags.
413 dnl 
414 AC_DEFUN(FPTOOLS_PROG_AR_AND_RANLIB,
415 [AC_PATH_PROG(ArCmdRaw,ar)
416 if test -z "$ArCmdRaw"; then
417     echo "You don't seem to have ar in your PATH...I have no idea how to make a library"
418     exit 1;
419 fi
420 dnl GNU ar needs special treatment: it appears to have problems with
421 dnl object files with the same name if you use the 's' modifier, but
422 dnl simple 'ar q' works fine, and doesn't need a separate ranlib.
423 if $ArCmdRaw --version | grep 'GNU' >/dev/null 2>/dev/null; then
424     ArCmdArgs='q'
425     NeedRanLib=''
426 elif $ArCmdRaw clqsZ conftest.a >/dev/null 2>/dev/null; then
427     ArCmdArgs="clqsZ"
428     NeedRanLib=''
429 elif $ArCmdRaw clqs conftest.a >/dev/null 2>/dev/null; then
430     ArCmdArgs="clqs"
431     NeedRanLib=''
432 elif $ArCmdRaw cqs conftest.a >/dev/null 2>/dev/null; then
433     ArCmdArgs="cqs"
434     NeedRanLib=''
435 elif $ArCmdRaw clq conftest.a >/dev/null 2>/dev/null; then
436     ArCmdArgs="clq"
437     NeedRanLib='YES'
438 elif $ArCmdRaw cq conftest.a >/dev/null 2>/dev/null; then
439     ArCmdArgs="cq"
440     NeedRanLib='YES'
441 elif $ArCmdRaw cq conftest.a 2>&1 | grep 'no archive members specified' >/dev/null 2>/dev/null; then
442     ArCmdArgs="cq"
443     NeedRanLib='YES'
444 else
445     echo "I can't figure out how to use your $ArCmd"
446     exit 1
447 fi
448 rm -rf conftest*
449 case $HostPlatform in
450  *mingw32) 
451           if test ${OSTYPE} == "msys"
452            then
453              ArCmd="${ArCmdRaw} ${ArCmdArgs}"
454            else
455              ArCmd="`cygpath -w ${ArCmdRaw} | sed -e 's@\\\\@/@g' ` ${ArCmdArgs}"
456           fi
457           ;;
458  *) ArCmd="${ArCmdRaw} ${ArCmdArgs}"
459     ;;
460 esac
461 test -n "$ArCmd" && test -n "$verbose" && echo "        setting ArCmd to $ArCmd"
462 AC_SUBST(ArCmd)
463 if $ArCmd conftest.a -input /dev/null >/dev/null 2>/dev/null; then
464     ArSupportsInput='-input'
465 else
466     ArSupportsInput=''
467 fi
468 rm -rf conftest*
469 test -n "$ArSupportsInput" && test -n "$verbose" && echo "        setting ArSupportsInput to $ArSupportsInput"
470 AC_SUBST(ArSupportsInput)
471 if test -z "$NeedRanLib"; then
472     RANLIB=':'
473     test -n "$verbose" && echo "        setting RANLIB to $RANLIB"
474     AC_SUBST(RANLIB)
475 else
476     AC_PROG_RANLIB
477 fi
478 ])
479
480 dnl
481 dnl AC_SHEBANG_PERL - can we she-bang perl?
482 dnl
483 AC_DEFUN(FPTOOLS_SHEBANG_PERL,
484 [AC_CACHE_CHECK([if your perl works in shell scripts], fptools_cv_shebang_perl,
485 [echo "#!$PerlCmd"'
486 exit $1;
487 ' > conftest
488 chmod u+x conftest
489 (SHELL=/bin/sh; export SHELL; ./conftest 69 > /dev/null)
490 if test $? -ne 69; then
491    fptools_cv_shebang_perl=yes
492 else
493    fptools_cv_shebang_perl=no
494 fi
495 rm -f conftest
496 ])])
497
498 dnl
499 dnl Extra testing of the result AC_PROG_CC, testing the gcc version no.
500 dnl *Must* be called after AC_PROG_CC
501 dnl
502 AC_DEFUN(FPTOOLS_HAVE_GCC,
503 [AC_CACHE_CHECK([whether you have an ok gcc], fptools_cv_have_gcc,
504 [if test -z "$GCC"; then
505     echo ''
506     echo "You would be better off with gcc"
507     echo "Perhaps it is already installed, but not in your PATH?"
508     fptools_cv_have_gcc='no'
509 else
510 changequote(, )dnl
511     gcc_version_str="`$CC -v 2>&1 | grep 'version ' | sed -e 's/.*version [^0-9]*\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1\.\2/g' `"
512 changequote([, ])dnl
513     fptools_cv_have_gcc='yes'
514     FP_COMPARE_VERSIONS([$gcc_version_str], [-lt], [2.0],
515         [fptools_cv_have_gcc='no'
516         echo ""
517         echo "your gcc version appears to be ..."
518         $CC --version
519         echo "gcc prior to 2.0 and have never worked with ghc."
520         echo "we recommend 2.95.3, although versions back to 2.7.2 should be ok."
521         AC_MSG_ERROR([gcc 1.X has never been supported])])
522 fi
523 ])
524 HaveGcc=`echo $fptools_cv_have_gcc | sed 'y/yesno/YESNO/'`
525 AC_SUBST(HaveGcc)
526 ])
527
528 dnl
529 dnl Some OSs (Mandrake Linux, in particular) configure GCC with
530 dnl -momit-leaf-frame-pointer on by default.  If this is the case, we
531 dnl need to turn it off for mangling to work.  The test is currently a bit
532 dnl crude, using only the version number of gcc.
533 dnl
534 AC_DEFUN([FPTOOLS_GCC_NEEDS_NO_OMIT_LFPTR],
535 [AC_CACHE_CHECK([whether gcc needs -mno-omit-leaf-frame-pointer], [fptools_cv_gcc_needs_no_omit_lfptr],
536 [FP_COMPARE_VERSIONS([$gcc_version_str], [-ge], [3.2],
537   [fptools_cv_gcc_needs_no_omit_lfptr=yes],
538   [fptools_cv_gcc_needs_no_omit_lfptr=no])])
539 if test "$fptools_cv_gcc_needs_no_omit_lfptr" = "yes"; then
540    AC_DEFINE([HAVE_GCC_MNO_OMIT_LFPTR], [1], [Define to 1 if gcc supports -mno-omit-leaf-frame-pointer.])
541 fi])# FPTOOLS_GCC_NEEDS_NO_OMIT_LFPTR
542
543
544 dnl Small feature test for perl version. Assumes PerlCmd
545 dnl contains path to perl binary
546 dnl
547 AC_DEFUN(FPTOOLS_CHECK_PERL_VERSION,
548 [$PerlCmd -v >conftest.out 2>&1
549 if grep "version 5" conftest.out >/dev/null 2>&1; then
550    :
551 else
552    if grep "v5.6" conftest.out >/dev/null 2>&1; then
553       :
554    else
555       if grep "v5.8" conftest.out >/dev/null 2>&1; then
556          :
557       else
558          if grep "version 6" conftest.out >/dev/null 2>&1; then
559             :
560          else
561             echo "Your version of perl probably won't work."
562          fi  
563       fi
564    fi
565 fi
566 rm -fr conftest*
567 ])
568
569
570 # FP_CHECK_PROG(VARIABLE, PROG-TO-CHECK-FOR,
571 #               [VALUE-IF-NOT-FOUND], [PATH], [REJECT])
572 # -----------------------------------------------------
573 # HACK: A small wrapper around AC_CHECK_PROG, setting VARIABLE to the full path
574 # of PROG-TO-CHECK-FOR when found.
575 AC_DEFUN([FP_CHECK_PROG],
576 [AC_CHECK_PROG([$1], [$2], [$as_dir/$ac_word$ac_exec_ext], [$3], [$4], [$5])][]dnl
577 )# FP_CHECK_PROC
578
579
580 # FP_PROG_FIND
581 # ------------
582 # Find a non-WinDoze version of the "find" utility.
583 AC_DEFUN([FP_PROG_FIND],
584 [AC_PATH_PROG([fp_prog_find], [find])
585 echo foo > conftest.txt
586 $fp_prog_find conftest.txt -print > conftest.out 2>&1
587 if grep '^conftest.txt$' conftest.out > /dev/null 2>&1 ; then
588   # OK, looks like a real "find".
589   FindCmd="$fp_prog_find"
590 else
591   # Found a poor WinDoze version of "find", ignore it.
592   AC_MSG_WARN([$fp_prog_find looks like a non-*nix find, ignoring it])
593   FP_CHECK_PROG([FindCmd], [find], [], [], [$fp_prog_find])
594 fi
595 rm -f conftest.txt conftest.out
596 AC_SUBST([FindCmd])[]dnl
597 ])# FP_PROG_FIND
598
599
600 dnl
601 dnl FPTOOLS_NOCACHE_CHECK prints a message, then sets the
602 dnl values of the second argument to the result of running
603 dnl the commands given by the third. It does not cache its
604 dnl result, so it is suitable for checks which should be
605 dnl run every time.
606 dnl
607 AC_DEFUN(FPTOOLS_NOCACHE_CHECK,
608 [AC_MSG_CHECKING([$1])
609  $3
610  AC_MSG_RESULT([$][$2])
611 ])
612
613 dnl
614 dnl FPTOOLS_GHC_VERSION(version)
615 dnl FPTOOLS_GHC_VERSION(major, minor [, patchlevel])
616 dnl FPTOOLS_GHC_VERSION(version, major, minor, patchlevel)
617 dnl
618 dnl Test for version of installed ghc.  Uses $GHC.
619 dnl [original version pinched from c2hs]
620 dnl
621 AC_DEFUN(FPTOOLS_GHC_VERSION,
622 [FPTOOLS_NOCACHE_CHECK([version of ghc], [fptools_version_of_ghc],
623 ["${WithGhc-ghc}" --version > conftestghc 2>&1
624   cat conftestghc >&AC_FD_CC
625 #Useless Use Of cat award...
626   fptools_version_of_ghc=`cat conftestghc | sed -n -e 's/, patchlevel *\([[0-9]]\)/.\1/;s/.* version \([[0-9]][[0-9.]]*\).*/\1/p'`
627   rm -fr conftest*
628   if test "[$]fptools_version_of_ghc" = ""
629   then
630     fptools_version_of_ghc='unknown'
631   fi
632 fptools_version_of_ghc[_major]=`echo [$]fptools_version_of_ghc | sed -e 's/^\([[0-9]]\).*/\1/'`
633 fptools_version_of_ghc[_minor]=`echo [$]fptools_version_of_ghc | sed -e 's/^[[0-9]]\.\([[0-9]]*\).*/\1/'`
634 fptools_version_of_ghc[_pl]=`echo [$]fptools_version_of_ghc | sed -n -e 's/^[[0-9]]\.[[0-9]]*\.\([[0-9]]*\)/\1/p'`
635 #
636 if test "[$]fptools_version_of_ghc[_pl]" = ""
637 then
638   fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor]"
639   fptools_version_of_ghc[_pl]="0"
640 else
641   fptools_version_of_ghc[_all]="[$]fptools_version_of_ghc[_major].[$]fptools_version_of_ghc[_minor].[$]fptools_version_of_ghc[_pl]"
642 fi
643 #
644 ifelse($#, [1], [dnl
645 [$1]="[$]fptools_version_of_ghc[_all]"
646 ], $#, [2], [dnl
647 [$1]="[$]fptools_version_of_ghc[_major]"
648 [$2]="[$]fptools_version_of_ghc[_minor]"
649 ], $#, [3], [dnl
650 [$1]="[$]fptools_version_of_ghc[_major]"
651 [$2]="[$]fptools_version_of_ghc[_minor]"
652 [$3]="[$]fptools_version_of_ghc[_pl]"
653 ], $#, [4], [dnl
654 [$1]="[$]fptools_version_of_ghc[_all]"
655 [$2]="[$]fptools_version_of_ghc[_major]"
656 [$3]="[$]fptools_version_of_ghc[_minor]"
657 [$4]="[$]fptools_version_of_ghc[_pl]"
658 ])
659 ])
660 ])dnl
661
662
663 dnl ** Map an arithmetic C type to a Haskell type.
664 dnl    Based on autconf's AC_CHECK_SIZEOF.
665
666 dnl FPTOOLS_CHECK_HTYPE(TYPE [, DEFAULT_VALUE, [, VALUE-FOR-CROSS-COMPILATION])
667 AC_DEFUN(FPTOOLS_CHECK_HTYPE,
668 [changequote(<<, >>)dnl
669 dnl The name to #define.
670 define(<<AC_TYPE_NAME>>, translit(htype_$1, [a-z *], [A-Z_P]))dnl
671 dnl The cache variable name.
672 define(<<AC_CV_NAME>>, translit(fptools_cv_htype_$1, [ *], [_p]))dnl
673 define(<<AC_CV_NAME_supported>>, translit(fptools_cv_htype_sup_$1, [ *], [_p]))dnl
674 changequote([, ])dnl
675 AC_MSG_CHECKING(Haskell type for $1)
676 AC_CACHE_VAL(AC_CV_NAME,
677 [AC_CV_NAME_supported=yes
678 fp_check_htype_save_cppflags="$CPPFLAGS"
679 CPPFLAGS="$CPPFLAGS $X_CFLAGS"
680 AC_TRY_RUN([#include <stdio.h>
681 #include <stddef.h>
682
683 #if HAVE_SYS_TYPES_H
684 # include <sys/types.h>
685 #endif
686
687 #if HAVE_UNISTD_H
688 # include <unistd.h>
689 #endif
690
691 #if HAVE_SYS_STAT_H
692 # include <sys/stat.h>
693 #endif
694
695 #if HAVE_FCNTL_H
696 # include <fcntl.h>
697 #endif
698
699 #if HAVE_SIGNAL_H
700 # include <signal.h>
701 #endif
702
703 #if HAVE_TIME_H
704 # include <time.h>
705 #endif
706
707 #if HAVE_TERMIOS_H
708 # include <termios.h>
709 #endif
710
711 #if HAVE_STRING_H
712 # include <string.h>
713 #endif
714
715 #if HAVE_CTYPE_H
716 # include <ctype.h>
717 #endif
718
719 #if defined(HAVE_GL_GL_H)
720 # include <GL/gl.h>
721 #elif defined(HAVE_OPENGL_GL_H)
722 # include <OpenGL/gl.h>
723 #endif
724
725 #if defined(HAVE_AL_ALC_H)
726 # include <AL/alc.h>
727 #elif defined(HAVE_OPENAL_ALC_H)
728 # include <OpenAL/alc.h>
729 #endif
730
731 #if HAVE_SYS_RESOURCE_H
732 # include <sys/resource.h>
733 #endif
734
735 typedef $1 testing;
736
737 main() {
738   FILE *f=fopen("conftestval", "w");
739   if (!f) exit(1);
740   if (((testing)((int)((testing)1.4))) == ((testing)1.4)) {
741     fprintf(f, "%s%d\n",
742            ((testing)(-1) < (testing)0) ? "Int" : "Word",
743            sizeof(testing)*8);
744   } else {
745     fprintf(f,"%s\n",
746            (sizeof(testing) >  sizeof(double)) ? "LDouble" :
747            (sizeof(testing) == sizeof(double)) ? "Double"  : "Float");
748   }
749   fclose(f);
750   exit(0);
751 }],AC_CV_NAME=`cat conftestval`,
752 ifelse([$2], , [AC_CV_NAME=NotReallyAType; AC_CV_NAME_supported=no], AC_CV_NAME=$2),
753 ifelse([$3], , [AC_CV_NAME=NotReallyATypeCross; AC_CV_NAME_supported=no], AC_CV_NAME=$3))]) dnl
754 CPPFLAGS="$fp_check_htype_save_cppflags"
755 if test "$AC_CV_NAME_supported" = yes; then
756   AC_MSG_RESULT($AC_CV_NAME)
757   AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [Define to Haskell type for $1])
758 else
759   AC_MSG_RESULT([not supported])
760 fi
761 undefine([AC_TYPE_NAME])dnl
762 undefine([AC_CV_NAME])dnl
763 undefine([AC_CV_NAME_supported])dnl
764 ])
765
766
767 # FP_CHECK_FUNC(FUNCTION, PROLOGUE, BODY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
768 # ---------------------------------------------------------------------------------
769 # A variant of AC_CHECK_FUNCS, limited to a single FUNCTION, but with the
770 # additional flexibility of specifying the PROLOGUE and BODY.
771 AC_DEFUN([FP_CHECK_FUNC],
772 [AS_VAR_PUSHDEF([fp_func], [fp_cv_func_$1])dnl
773 AC_CACHE_CHECK([for $1], fp_func,
774 [AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])],
775                 [AS_VAR_SET(fp_func, yes)],
776                 [AS_VAR_SET(fp_func, no)])])
777 AS_IF([test AS_VAR_GET(fp_func) = yes],
778       [AC_DEFINE(AS_TR_CPP(HAVE_$1), [1],
779                 [Define to 1 if you have the `]$1[' function.]) $4],
780       [$5])dnl
781 AS_VAR_POPDEF([fp_func])dnl
782 ])# FP_CHECK_FUNC
783
784
785 dnl ** Check which CATALOG file we have to use with DocBook SGML.
786 dnl
787 dnl FPTOOLS_DOCBOOK_CATALOG(VARIABLE, JADE, STYLESHEET, CATALOGS-TO-CHECK-FOR)
788 dnl
789 dnl If any of the catalogs given in CATALOGS-TO-CHECK-FOR works on this
790 dnl platform, let VARIABLE refer to this catalog; otherwise, VARIABLE
791 dnl is set to "no".  JADE is the jade executable and STYLESHEET
792 dnl a DocBook style sheet.
793 dnl
794 AC_DEFUN(FPTOOLS_DOCBOOK_CATALOG,
795 [AC_CACHE_CHECK([for DocBook CATALOG], fptools_cv_sgml_catalog,
796 [
797 cat > conftest.sgml << EOF
798 <!DOCTYPE Article PUBLIC "-//OASIS//DTD DocBook V3.1//EN">
799 <Article>
800 <ArtHeader>
801 <Title>Test</Title>
802 <Author><OtherName>Test</OtherName></Author>
803 <Address>Test</Address>
804 <PubDate>Test</PubDate>
805 </ArtHeader>
806 <Sect1><Title>Test</Title>
807 <Para>
808 Test.
809 </Para>
810 </Sect1>
811 </Article>
812 EOF
813 fptools_cv_sgml_catalog=no
814 if test -z "$SGML_CATALOG_FILES" ; then
815  for fptools_catalog in $4; do
816    ac_try="$2 -t rtf -d $3#print -c $fptools_catalog conftest.sgml"
817    if AC_TRY_EVAL(ac_try); then
818      fptools_cv_sgml_catalog=[$]fptools_catalog
819      break
820    fi
821  done
822 else
823 # If the env var SGML_CATALOG_FILES is defined, assume things are cool.
824   fptools_cv_sgml_catalog="yes"
825 fi
826 ])
827 rm -rf conftest*
828 if test $fptools_cv_sgml_catalog != "no"; then
829   $1=$fptools_cv_sgml_catalog
830 fi
831 ])
832
833
834 # FP_CHECK_WIN32
835 # --------------
836 # If Windows is the target platform (e.g. MinGW/MSYS or Cygwin with
837 # -mno-cygwin), the variable "is_win32" is set to "yes", otherwise (e.g. *nix
838 # systems or plain Cygwin) it is set to "no".
839 AC_DEFUN([FP_CHECK_WIN32],
840 [AC_CACHE_CHECK([for Windows environment], [fp_cv_is_win32],
841   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
842 #if !_WIN32
843    syntax error;
844 #endif
845 ])], [fp_cv_is_win32=yes], [fp_cv_is_win32=no])])
846 is_win32="$fp_cv_is_win32"[]dnl
847 ])# FP_CHECK_WIN32
848
849
850 # FP_PATH_X
851 # ---------
852 # Same as AC_PATH_X, but works even for broken Cygwins which try to include the
853 # non-existant <gl/mesa_wgl.h> header when -mno-cygwin is used.
854 AC_DEFUN([FP_PATH_X],
855 [AC_REQUIRE([FP_CHECK_WIN32])
856 if test x"$is_win32" = xyes; then
857   no_x=yes
858 else
859   AC_PATH_X
860 fi
861 ])# FP_PATH_X
862
863
864 # FP_PATH_XTRA
865 # ------------
866 # Same as AC_PATH_XTRA, but works even for broken Cygwins which try to include
867 # the non-existant <gl/mesa_wgl.h> header when -mno-cygwin is used.
868 AC_DEFUN([FP_PATH_XTRA],
869 [AC_REQUIRE([FP_CHECK_WIN32])
870 if test x"$is_win32" = xyes; then
871   no_x=yes
872 else
873   AC_PATH_XTRA
874 fi
875 ])# FP_PATH_XTRA
876
877
878 # FP_CHECK_GL_HELPER(LIBNAME, LIBS, INCLUDES, FUNCTION-BODY)
879 # ----------------------------------------------------------
880 # Try each library in LIBS to successfully link INCLUDES plus FUNCTION-BODY,
881 # setting LIBNAME_CFLAGS and LIBNAME_LIBS to the corresponding values. Sets
882 # no_LIBNAME to "yes" if no suitable library was found. (LIBNAME_CFLAGS0
883 # contains the value of LIBNAME_CFLAGS without CPPFLAGS, and LIBNAME_LIBS0
884 # contains the value of LIBNAME_LIBS without LDFLAGS, but these are only
885 # used internally.)
886 AC_DEFUN([FP_CHECK_GL_HELPER],
887 [AC_CACHE_CHECK([for $1 library], [fp_cv_check_$1_lib],
888   [fp_cv_check_$1_lib="no"
889   fp_save_CPPFLAGS="$CPPFLAGS"
890   CPPFLAGS="$CPPFLAGS ${$1_CFLAGS}"
891   fp_save_LIBS="$LIBS"
892   for fp_try_lib in $2; do
893     # transform "-lfoo" to "foo.lib" when using cl
894     if test x"$CC" = xcl; then
895       fp_try_lib=`echo $fp_try_lib | sed -e 's/^-l//' -e 's/$/.lib/'`
896     fi
897     LIBS="$fp_try_lib ${$1_LIBS} $fp_save_LIBS"
898     AC_TRY_LINK([$3], [$4], [fp_cv_check_$1_lib="$fp_try_lib ${$1_LIBS}"; break])
899   done
900   LIBS="$fp_save_LIBS"
901   CPPFLAGS="$fp_save_CPPFLAGS"])
902
903   if test x"$fp_cv_check_$1_lib" = xno; then
904     no_$1=yes
905     $1_CFLAGS=
906     $1_LIBS=
907   else
908     $1_CFLAGS0="${$1_CFLAGS}"
909     $1_CFLAGS="$CPPFLAGS ${$1_CFLAGS0}"
910     $1_LIBS0="$fp_cv_check_$1_lib"
911     $1_LIBS="$LDFLAGS ${$1_LIBS0}"
912   fi
913 ])# FP_CHECK_GL_HELPER
914
915
916 # FP_CHECK_GL
917 # -----------
918 AC_DEFUN([FP_CHECK_GL],
919 [AC_REQUIRE([FP_PATH_X])
920 AC_REQUIRE([AC_CANONICAL_SYSTEM])
921
922 AC_ARG_ENABLE([hopengl],
923   [AC_HELP_STRING([--enable-hopengl],
924     [build a Haskell binding for OpenGL (GL/GLU). On Mac OS X, use
925      --enable-hopengl=x11 to use X11 instead of the "native" libraries.
926      (default=no)])],
927   [enable_opengl=$enableval], [enable_opengl=no])
928
929 if test x"$enable_opengl" = xno; then
930    no_GL=yes
931 else
932   use_quartz_opengl=no
933   case $target_os in
934   darwin*)
935     if test x"$enable_opengl" != xx11; then
936       AC_DEFINE([USE_QUARTZ_OPENGL], [1],
937                 [Define to 1 if native OpenGL should be used on Mac OS X])
938       use_quartz_opengl=yes
939     fi
940     ;;
941   esac
942
943   if test x"$use_quartz_opengl" != xyes; then
944     AC_CHECK_LIB([m], [atan], [GL_LIBS="-lm $GL_LIBS"])
945
946     if test x"$no_x" != xyes; then
947       test -n "$x_includes" && GL_CFLAGS="-I$x_includes $GL_CFLAGS"
948       test -n "$x_libraries" && GL_LIBS="-L$x_libraries -lX11 $GL_LIBS"
949     fi
950
951     FP_CHECK_GL_HELPER([GL], [-lGL -lopengl32], [@%:@include <GL/gl.h>], [glEnd()])
952
953     if test x"$no_GL" != xyes; then
954       # Ugly: To get wglGetProcAddress on Windows, we have to link with
955       # opengl32.dll, too, even when we are using Cygwin with X11.
956       case "$GL_LIBS" in
957         *-lopengl32*|*opengl32.lib*) ;;
958         *) fp_save_LIBS="$LIBS"
959            LIBS="$LIBS -lopengl32"
960            AC_TRY_LINK([@%:@include <GL/gl.h>], [glEnd()],
961              [GL_LIBS="$GL_LIBS -lopengl32"; GL_LIBS0="$GL_LIBS0 -lopengl32"])
962            LIBS="$fp_save_LIBS"
963            ;;
964       esac
965     fi
966   fi
967 fi
968
969 AC_SUBST([GL_CFLAGS])
970 AC_SUBST([GL_LIBS])
971 ])# FP_CHECK_GL
972
973
974 # FP_CHECK_GLU
975 # ------------
976 AC_DEFUN([FP_CHECK_GLU],
977 [AC_REQUIRE([FP_CHECK_GL])dnl
978 GLU_CFLAGS="$GL_CFLAGS0"
979 GLU_LIBS="$GL_LIBS0"
980
981 if test x"$enable_opengl" = xno; then
982    no_GLU=yes
983 elif test x"$use_quartz_opengl" != xyes; then
984   FP_CHECK_GL_HELPER([GLU], [-lglu32 -lGLU], [@%:@include <GL/glu.h>], [gluNewQuadric()])
985 fi
986
987 AC_SUBST([GLU_CFLAGS])
988 AC_SUBST([GLU_LIBS])
989 ])# FP_CHECK_GLU
990
991
992 # FP_CHECK_GLUT
993 # -------------
994 AC_DEFUN([FP_CHECK_GLUT],
995 [AC_REQUIRE([FP_CHECK_GLU])
996 FP_PATH_XTRA
997
998 if test x"$enable_opengl" = xno; then
999    no_GLUT=yes
1000 elif test x"$use_quartz_opengl" != xyes; then
1001   GLUT_CFLAGS="$GLU_CFLAGS0"
1002   GLUT_LIBS="$GLU_LIBS0"
1003
1004   if test x"$no_x" != xyes; then
1005     GLUT_LIBS="$X_PRE_LIBS -lXmu -lXi $X_EXTRA_LIBS $GLUT_LIBS"
1006   fi
1007
1008   AC_CHECK_HEADERS([windows.h GL/glut.h])
1009   # Note 1: On Cygwin with X11, GL/GLU functions use the "normal" calling
1010   # convention, but GLUT functions use stdcall. To get this right, it is
1011   # necessary to include <windows.h> first.
1012   # Note 2: MinGW/MSYS comes without a GLUT header, so we use Cygwin's one in
1013   # that case.
1014   FP_CHECK_GL_HELPER([GLUT], [-lglut32 -lglut], [
1015 #if HAVE_WINDOWS_H
1016 #include <windows.h>
1017 #endif
1018 #if HAVE_GL_GLUT_H
1019 #include <GL/glut.h>
1020 #else
1021 #include "glut_local.h"
1022 #endif
1023     ], [glutMainLoop()])
1024 fi
1025
1026 AC_SUBST([GLUT_CFLAGS])
1027 AC_SUBST([GLUT_LIBS])
1028 ])# FP_CHECK_GLUT
1029
1030
1031 dnl @synopsis FP_EMPTY_STRUCTS
1032 dnl 
1033 dnl Check whether empty structs is accepted by CC.
1034 dnl
1035 AC_DEFUN(FP_EMPTY_STRUCTS,
1036 [AC_CACHE_CHECK(empty struct support, fptools_cv_empty_structs,
1037 [AC_TRY_COMPILE([
1038 typedef struct { /*empty*/ } StgFoo;
1039 ],
1040 [int i;], 
1041 fptools_cv_empty_structs=yes,
1042 fptools_cv_empty_structs=no)])
1043 if test "$fptools_cv_empty_structs" = yes; then
1044 AC_DEFINE([SUPPORTS_EMPTY_STRUCTS], [1], [Define to 1 if C compiler supports declaration of empty structure types.])
1045 fi
1046 ])
1047
1048 # LocalWords:  fi