80be29a284a8fa5f453102c954dff065027d6d53
[ghc-hetmet.git] / configure.in
1 dnl == autoconf source for the Glasgow FP tools ==
2 dnl (run "grep '^dnl \*' configure.in | sed -e 's/dnl / /g; s/\*\*/   +/g;'"
3 dnl  (or some such) to see the outline of this file)
4 dnl
5 #
6 # (c) The AQUA Project, Glasgow University, 1994-1998
7 #
8 # Configure script template for the Glasgow functional programming tools
9 #
10 # Process with 'autoconf' to get a working configure script.
11 #
12 # For the generated configure script, do "./configure --help" to
13 # see what flags are available. (Better yet, read the documentation!)
14 #
15
16 # First off, a distrib sanity check..
17 AC_INIT(mk/config.mk.in)
18
19 dnl * Declare subdirectories that have a private configure script
20 dnl
21 dnl After the toplevel configuration is complete, the script will recurse into
22 dnl these subdirectories (the use of cache values makes repeated checks cheap)
23 AC_CONFIG_SUBDIRS(ghc)
24
25 # -------------------------------------------------------------------------
26 # Prepare to generate the following header files
27 #
28 #
29 AC_CONFIG_HEADER(mk/config.h)
30
31 # No, semi-sadly, we don't do `--srcdir'...
32 if test x"$srcdir" != 'x.' ; then
33     echo "This configuration does not support the \`--srcdir' option.."
34     exit 1
35 fi
36
37 #
38 # Remove common automounter nonsense + convert from UNC to DOS style paths
39 # (UNC awareness isn't quite there yet for cygwin32-beta18 and consituent tools.)
40 #
41 hardtop=`pwd`
42 hardtop=`echo $hardtop | sed 's|^/tmp_mnt.*\(/local/.*\)$|\1|' | sed 's|^/tmp_mnt/|/|' | sed 's|^/grasp_tmp|/local/grasp_tmp|' | sed 's|^//\(.\)/|\1:/|' `
43
44 echo ''
45 echo "*** The top of your build tree is: $hardtop"
46 AC_SUBST(hardtop)
47
48 dnl--------------------------------------------------------------------
49 dnl * Choose host(/target/build) platform
50 dnl--------------------------------------------------------------------
51
52 dnl Guess host/target/build platform(s) if necessary.
53 AC_CANONICAL_SYSTEM
54
55 # "$host" defaults to "$target"
56 if test "x$host" = xNONE ; then
57     host=$target
58 fi
59
60 dnl ** canonicalize platform names
61 BuildPlatform=`/bin/sh $srcdir/config.sub $build` || exit 1
62 HostPlatform=`/bin/sh $srcdir/config.sub $host` || exit 1
63 TargetPlatform=`/bin/sh $srcdir/config.sub $target` || exit 1
64
65 if test x"$TargetPlatform" != x"$HostPlatform" ; then
66     echo "GHC configuration does not support differing host/target (i.e., cross-compiling)"
67     exit 1
68 fi
69
70 exeext=''
71 #
72 # The following will be more difficult when we *are* cross-compiling.
73 # Suitable names to slam in *_CPP are in platform.h.in.
74 # We also record the architecture, vendor, and operating system (OS)
75 # separately.
76 case $HostPlatform in
77 alpha-dec-osf[[12]]*)
78         HostPlatform=alpha-dec-osf1   # canonicalise for our purposes
79         TargetPlatform=alpha-dec-osf1 # this will work for now... (hack)
80         BuildPlatform=alpha-dec-osf1  # hack
81         HostPlatform_CPP='alpha_dec_osf1'
82         HostArch_CPP='alpha'
83         HostVendor_CPP='dec'
84         HostOS_CPP='osf1'
85         ;;
86 alpha-dec-osf[[34]]*)
87         HostPlatform=alpha-dec-osf3   # canonicalise for our purposes
88         TargetPlatform=alpha-dec-osf3 # this will work for now... (hack)
89         BuildPlatform=alpha-dec-osf3  # hack
90         HostPlatform_CPP='alpha_dec_osf3'
91         HostArch_CPP='alpha'
92         HostVendor_CPP='dec'
93         HostOS_CPP='osf3'
94         ;;
95 alpha-unknown-linux)
96         HostPlatform=alpha-unknown-linux
97         TargetPlatform=alpha-unknown-linux
98         BuildPlatform=alpha-unknown-linux
99         HostPlatform_CPP='alpha_unknown_linux'
100         HostArch_CPP='alpha'
101         HostVendor_CPP='unknown'
102         HostOS_CPP='linux'
103         ;;
104 alpha-unknown-freebsd*)
105         HostPlatform=alpha-unknown-freebsd
106         TargetPlatform=alpha-unknown-freebsd
107         BuildPlatform=alpha-unknown-freebsd
108         HostPlatform_CPP='alpha_unknown_freebsd'
109         HostArch_CPP='alpha'
110         HostVendor_CPP='unknown'
111         HostOS_CPP='freebsd'
112         ;;
113 hppa1.1-hp-hpux*)
114         HostPlatform=hppa1.1-hp-hpux  # canonicalise for our purposes (hack)
115         TargetPlatform=hppa1.1-hp-hpux
116         BuildPlatform=hppa1.1-hp-hpux
117         HostPlatform_CPP='hppa1_1_hp_hpux'
118         HostArch_CPP='hppa1_1'
119         HostVendor_CPP='hp'
120         HostOS_CPP='hpux'
121         ;;
122 i[[3456]]86-*-linuxaout*)
123         HostPlatform=i386-unknown-linuxaout   # hack again
124         TargetPlatform=i386-unknown-linuxaout
125         BuildPlatform=i386-unknown-linuxaout
126         HostPlatform_CPP='i386_unknown_linuxaout'
127         HostArch_CPP='i386'
128         HostVendor_CPP='unknown'
129         HostOS_CPP='linuxaout'
130         ;;
131 i[[3456]]86-*-linux*)
132         HostPlatform=i386-unknown-linux # hack again
133         TargetPlatform=i386-unknown-linux
134         BuildPlatform=i386-unknown-linux
135         HostPlatform_CPP='i386_unknown_linux'
136         HostArch_CPP='i386'
137         HostVendor_CPP='unknown'
138         HostOS_CPP='linux'
139         ;;
140 i[[3456]]86-*-freebsd[[3-9]]*) # FreeBSD 3.0+ uses ELF
141         HostPlatform=i386-unknown-freebsd # hack again
142         TargetPlatform=i386-unknown-freebsd
143         BuildPlatform=i386-unknown-freebsd
144         HostPlatform_CPP='i386_unknown_freebsd'
145         HostArch_CPP='i386'
146         HostVendor_CPP='unknown'
147         HostOS_CPP='freebsd'
148         ;;
149 i[[3456]]86-*-freebsd2*) # Older FreeBSDs are a.out
150         HostPlatform=i386-unknown-freebsd2 # hack again
151         TargetPlatform=i386-unknown-freebsd2
152         BuildPlatform=i386-unknown-freebsd2
153         HostPlatform_CPP='i386_unknown_freebsd2'
154         HostArch_CPP='i386'
155         HostVendor_CPP='unknown'
156         HostOS_CPP='freebsd2'
157         ;;
158 i[[3456]]86-*-netbsd*)
159         HostPlatform=i386-unknown-netbsd # hack again
160         TargetPlatform=i386-unknown-netbsd
161         BuildPlatform=i386-unknown-netbsd
162         HostPlatform_CPP='i386_unknown_netbsd'
163         HostArch_CPP='i386'
164         HostVendor_CPP='unknown'
165         HostOS_CPP='netbsd'
166         ;;
167 i[[3456]]86-*-solaris2*)
168         HostPlatform=i386-unknown-solaris2 # hack again
169         TargetPlatform=i386-unknown-solaris2
170         BuildPlatform=i386-unknown-solaris2
171         HostPlatform_CPP='i386_unknown_solaris2'
172         HostArch_CPP='i386'
173         HostVendor_CPP='unknown'
174         HostOS_CPP='solaris2'
175         ;;
176 i[[3456]]86-*-cygwin32*)
177         HostPlatform=i386-unknown-cygwin32 # hack again
178         TargetPlatform=i386-unknown-cygwin32
179         BuildPlatform=i386-unknown-cygwin32
180         HostPlatform_CPP='i386_unknown_cygwin32'
181         HostArch_CPP='i386'
182         HostVendor_CPP='unknown'
183         HostOS_CPP='cygwin32'
184         exeext='.exe'
185         ;;
186 i[[3456]]86-*-mingw32*)
187         HostPlatform=i386-unknown-mingw32 # hack again
188         TargetPlatform=i386-unknown-mingw32
189         BuildPlatform=i386-unknown-mingw32
190         HostPlatform_CPP='i386_unknown_mingw32'
191         HostArch_CPP='i386'
192         HostVendor_CPP='unknown'
193         HostOS_CPP='mingw32'
194         exeext='.exe'
195         # We assume you're using mingw32 via the gcc that comes
196         # with cygwin, and not the native port, so let's augment
197         # the gcc command-line used here with -mno-cygwin to
198         # arrange for good things to happen.
199         CFLAGS="-mno-cygwin $CFLAGS"
200         ;;
201 m68k-next-nextstep2)
202         HostPlatform_CPP='m68k_next_nextstep2'
203         HostArch_CPP='m68k'
204         HostVendor_CPP='next'
205         HostOS_CPP='nextstep2'
206         ;;
207 m68k-next-nextstep3)
208         HostPlatform_CPP='m68k_next_nextstep3'
209         HostArch_CPP='m68k'
210         HostVendor_CPP='next'
211         HostOS_CPP='nextstep3'
212         ;;
213 i[[3456]]86-next-nextstep3)
214         HostPlatform=i386-next-nextstep3 # hack again
215         TargetPlatform=i386-next-nextstep3
216         BuildPlatform=i386-next-nextstep3
217         HostPlatform_CPP='i386_next_nextstep3'
218         HostArch_CPP='i386'
219         HostVendor_CPP='next'
220         HostOS_CPP='nextstep3'
221         ;;
222 m68k-sun-sunos4*)
223         HostPlatform=m68k-sun-sunos4
224         TargetPlatform=m68k-sun-sunos4 #hack
225         BuildPlatform=m68k-sun-sunos4 #hack
226         HostPlatform_CPP='m68k_sun_sunos4'
227         HostArch_CPP='m68k'
228         HostVendor_CPP='sun'
229         HostOS_CPP='sunos4'
230         ;;
231 mips-dec-ultrix*)
232         HostPlatform_CPP='mips_dec_ultrix'
233         HostArch_CPP='mipsel'   # NB a little different
234         HostVendor_CPP='dec'
235         HostOS_CPP='ultrix'
236         ;;
237 mips-sgi-irix*)
238         HostPlatform=mips-sgi-irix
239         TargetPlatform=mips-sgi-irix #hack
240         BuildPlatform=mips-sgi-irix #hack
241         HostPlatform_CPP='mips_sgi_irix'
242         HostArch_CPP='mipseb'   # NB a little different
243         HostVendor_CPP='sgi'
244         HostOS_CPP='irix'
245         ;;
246 rs6000-ibm-aix*)
247         HostPlatform=rs6000-ibm-aix
248         TargetPlatform=rs6000-ibm-aix #hack
249         BuildPlatform=rs6000-ibm-aix #hack
250         HostPlatform_CPP='rs6000_ibm_aix'
251         HostArch_CPP='rs6000'
252         HostVendor_CPP='ibm'
253         HostOS_CPP='aix'
254         ;;
255 powerpc-ibm-aix*)
256         HostPlatform=powerpc-ibm-aix
257         TargetPlatform=powerpc-ibm-aix #hack
258         BuildPlatform=powerpc-ibm-aix #hack
259         HostPlatform_CPP='powerpc_ibm_aix'
260         HostArch_CPP='powerpc'
261         HostVendor_CPP='ibm'
262         HostOS_CPP='aix'
263         ;;
264 sparc-sun-sunos4*)
265         HostPlatform=sparc-sun-sunos4
266         TargetPlatform=sparc-sun-sunos4 #hack
267         BuildPlatform=sparc-sun-sunos4 #hack
268         HostPlatform_CPP='sparc_sun_sunos4'
269         HostArch_CPP='sparc'
270         HostVendor_CPP='sun'
271         HostOS_CPP='sunos4'
272         ;;
273 sparc-sun-solaris2*)
274         HostPlatform=sparc-sun-solaris2
275         TargetPlatform=sparc-sun-solaris2 #hack
276         BuildPlatform=sparc-sun-solaris2 #hack
277         HostPlatform_CPP='sparc_sun_solaris2'
278         HostArch_CPP='sparc'
279         HostVendor_CPP='sun'
280         HostOS_CPP='solaris2'
281         ;;
282 *)
283         echo "Unrecognised platform: $HostPlatform"
284         exit 1
285         ;;
286 esac
287 echo "Canonicalised to: $HostPlatform"
288 test  x"$HostPlatform" != x"$TargetPlatform" && echo "Target platform set to $TargetPlatform"
289 test  x"$BuildPlatform" != x"$HostPlatform"  && echo "Build platform set to $BuildPlatform"
290
291 BuildPlatform_CPP=$HostPlatform_CPP
292 TargetPlatform_CPP=$HostPlatform_CPP
293 BuildArch_CPP=$HostArch_CPP
294 TargetArch_CPP=$HostArch_CPP
295 BuildOS_CPP=$HostOS_CPP
296 HostOS_Full=$host_os
297 TargetOS_CPP=$HostOS_CPP
298 BuildVendor_CPP=$HostVendor_CPP
299 TargetVendor_CPP=$HostVendor_CPP
300
301 dnl Cannot afford all these SUBSTs (because of braindead seds w/ 99 cmd limits)
302 dnl AC_SUBST(BuildPlatform)
303
304 AC_SUBST(HostPlatform)
305 AC_SUBST(TargetPlatform)
306 AC_SUBST(HostPlatform_CPP)
307 dnl AC_SUBST(BuildPlatform_CPP)
308 dnl AC_SUBST(TargetPlatform_CPP)
309
310 AC_SUBST(HostArch_CPP)
311 dnl AC_SUBST(BuildArch_CPP)
312 dnl AC_SUBST(TargetArch_CPP)
313
314 AC_SUBST(HostOS_CPP)
315 AC_SUBST(HostOS_Full)
316 dnl AC_SUBST(BuildOS_CPP)
317 dnl AC_SUBST(TargetOS_CPP)
318
319 AC_SUBST(HostVendor_CPP)
320 dnl AC_SUBST(BuildVendor_CPP)
321 dnl AC_SUBST(TargetVendor_CPP)
322
323 AC_SUBST(exeext)
324
325 AC_PATH_PROG(GHC,ghc)
326 AC_PATH_PROGS(NHC,nhc nhc98)
327 AC_PATH_PROG(HBC,hbc)
328
329 dnl --------------------------------------------------------------
330 dnl * Project specific configuration options
331 dnl --------------------------------------------------------------
332 dnl What follows is a bunch of options that can either be configured
333 dnl through command line options to the configure script or by
334 dnl supplying defns in the build tree's mk/build.mk. Having the option to
335 dnl use either is considered a Feature.
336
337 dnl ** What command to use to compile compiler sources ?
338 dnl --------------------------------------------------------------
339 AC_ARG_WITH(hc,
340 [  --with-hc=<haskell compiler>
341         Use a command different from 'ghc' to compile up Haskell code.
342         (no claims currently made that this will work with a compiler other than a
343          recent version of GHC, but you could always try...)
344 ],
345 [WithHc="$withval"],
346 [WithHc=$GHC]
347 )
348 AC_SUBST(WithHc)
349
350 dnl ** Which gcc to use?
351 dnl --------------------------------------------------------------
352 AC_ARG_WITH(gcc,
353 [  --with-gcc=<gcc command>
354         Use a different command instead of 'gcc' for the GNU C compiler.
355 ],
356 [WhatGccIsCalled="$withval"],
357 [WhatGccIsCalled="gcc"]
358 )
359 AC_SUBST(WhatGccIsCalled)
360
361 dnl ** Booting from .hc files?
362 dnl --------------------------------------------------------------
363 AC_ARG_ENABLE(hc-boot,
364 [  --enable-hc-boot
365         Boot the Glasgow Haskell Compiler from intermediate .hc files.
366         (This option is mostly of interest to porters.)
367 ],
368 [BootingFromHc=YES],
369 [BootingFromHc=NO]
370 )
371 AC_SUBST(BootingFromHc)
372
373
374 dnl ** Enable the construction of Win32 DLLs?
375 dnl --------------------------------------------------------------
376 AC_ARG_ENABLE(win32-dlls,
377 [  --enable-win32-dlls
378         If on a Win32 platform running mingw32/cygwin, enable the
379         construction of DLLs containing ghc-compiled code.
380 ],
381 [
382 case $HostOS_CPP in
383 cygwin32) ;;
384 mingw32)  ;;
385 *)    echo "Unrecognised win32 platform: $HostPlatform"
386       exit 1
387       ;;
388 esac
389 EnableWin32DLLs=YES
390 ],
391 [EnableWin32DLLs=NO]
392 )
393 AC_SUBST(EnableWin32DLLs)
394 if test x"$EnableWin32DLLs" = "xYES" ; then
395  AC_DEFINE(HAVE_WIN32_DLL_SUPPORT)
396 fi
397
398 dnl --------------------------------------------------------------
399 dnl End of configure script option section
400 dnl --------------------------------------------------------------
401
402
403 dnl --------------------------------------------------------------
404 dnl * General configuration checks
405 dnl --------------------------------------------------------------
406
407 dnl ** does #! work?
408 AC_SYS_INTERPRETER()
409
410 dnl ** look for `perl', but only in /bin on Windows
411 case $HostOS_CPP in
412 cygwin32|mingw32)
413    AC_CHECK_PROG(PerlCmd,perl,/bin/perl,,/bin)
414    if test -z "$PerlCmd"; then
415       echo "You must install the version of Perl shipped with GHC"
416       echo "(or a compatible one) in /bin."
417       exit 1
418    fi
419    ;;
420 *)
421    AC_PATH_PROG(PerlCmd,perl)
422    if test -z "$PerlCmd"; then
423       echo "You must install perl before you can continue"
424       echo "Perhaps it is already installed, but not in your PATH?"
425       exit 1
426    else
427    FPTOOLS_CHECK_PERL_VERSION
428    fi
429    ;;
430 esac
431
432 dnl ** does #! path/to/perl work? (sometimes it's too long...)
433 FPTOOLS_SHEBANG_PERL
434
435
436 dnl ** look for GCC and find out which version
437 dnl     Figure out which C compiler to use.  Gcc is preferred.
438 dnl     If gcc, make sure it's at least 2.1
439 dnl
440 AC_PROG_CC
441 FPTOOLS_HAVE_GCC
442
443 dnl ** figure out how to invoke cpp directly (gcc -E is no good)
444 AC_PROG_CPP
445
446 dnl ** figure out how to do context diffs
447 FPTOOLS_PROG_DIFF
448
449 dnl ** Find find command (for Win32's benefit)
450 AC_PATH_PROG(FindCmd, find)
451
452 dnl ** look for a decent parser generator (bison preferred)
453 dnl (FPTOOLS_PROG_YACCY is AC_PROG_YACC, but with some extra testing 
454 dnl  on the suitability of the 'yacc' returned.)
455 FPTOOLS_PROG_YACCY
456
457 dnl ** Find lex command (lex or flex) and library (-ll or -lfl)
458 dnl     ( not that we care about the latter, see mk/config.mk.in )
459 AC_PROG_LEX
460
461
462 dnl ** figure out how to do a BSD-ish install
463 AC_PROG_INSTALL
464
465 dnl If you can run configure, you certainly have /bin/sh
466 AC_DEFINE(HAVE_BIN_SH)
467
468 dnl ** how to invoke `ar' and `ranlib'
469 FPTOOLS_PROG_AR_AND_RANLIB
470
471
472 dnl ** Check to see whether ln -s works
473 AC_PROG_LN_S
474
475
476 dnl ** Find the path to sed
477 AC_PATH_PROG(SedCmd,sed)
478
479
480 dnl ** check for time command
481 AC_PATH_PROG(TimeCmd,time)
482
483
484 dnl ** check for tar
485 dnl   if GNU tar is named gtar, look for it first.
486 AC_PATH_PROGS(TarCmd,gtar tar,tar)
487
488 dnl ** check for gzip/compress
489 AC_PATH_PROGS(CompressCmd,gzip compress,gzip)
490
491 dnl ** check for jade/openjade
492 AC_PATH_PROGS(JadeCmd,openjade jade,jade)
493
494 compress_nm=`basename $CompressCmd`
495 if test x"$compress_nm" = xgzip; then
496   CompressCmd="$CompressCmd -d"
497   CompressSuffix="gz"
498 else
499   CompressSuffix="Z"
500 fi
501 AC_SUBST(CompressCmd)
502 AC_SUBST(CompressSuffix)
503
504 dnl ** check for installed happy binary + version
505 dnl    (don't do it if we're booting from .hc files though.)
506 if (test "$BootingFromHc" = "NO"); then
507 FPTOOLS_HAPPY
508 fi;
509
510 dnl --------------------------------------------------
511 dnl ### program checking section ends here ###
512 dnl --------------------------------------------------
513
514 dnl --------------------------------------------------
515 dnl * Platform header file and syscall feature tests
516 dnl ### checking the state of the local header files and syscalls ###
517
518 dnl ** check for full ANSI header (.h) files
519 AC_HEADER_STDC
520
521 dnl ** check for specific header (.h) files that we are interested in
522 AC_CHECK_HEADERS(Files.h assert.h console.h ctype.h dirent.h errno.h fcntl.h float.h ftw.h grp.h ieee754.h malloc.h memory.h nlist.h pascal.h pwd.h sgtty.h siginfo.h signal.h stat.h stdint.h stdlib.h stdarg.h string.h sys/fault.h sys/file.h sys/ioctl.h sys/limits.h sys/mman.h sys/param.h sys/procfs.h sys/resource.h sys/signal.h sys/socket.h netinet/tcp.h sys/stat.h sys/syscall.h sys/time.h sys/timeb.h sys/timers.h sys/times.h sys/types.h sys/utsname.h sys/vadvise.h sys/wait.h termio.h termios.h time.h types.h unistd.h utime.h values.h vfork.h bfd.h winsock.h)
523
524 AC_CHECK_HEADER(readline/readline.h, HaveReadlineReadlineH=YES, HaveReadlineReadlineH=NO)
525 AC_CHECK_HEADER(readline/history.h, HaveReadlineHistoryH=YES, HaveReadlineHistoryH=NO)
526
527 if test $HaveReadlineReadlineH = YES && test $HaveReadlineHistoryH = YES ; then
528   HaveReadlineHeaders=YES
529   AC_DEFINE(HAVE_READLINE_HEADERS,1)
530 else
531   HaveReadlineHeaders=NO
532   AC_DEFINE(HAVE_READLINE_HEADERS,0)
533 fi
534 AC_SUBST(HaveReadlineHeaders)
535
536 dnl ** check for DOS include files
537 AC_CHECK_HEADERS(dos.h conio.h io.h std.h) 
538
539 dnl ** check for Windows include files
540 AC_CHECK_HEADERS(windows.h)
541
542 dnl ** check if it is safe to include both <time.h> and <sys/time.h>
543 AC_HEADER_TIME
544
545 dnl dynamic loading include files
546 AC_CHECK_HEADERS(dlfcn.h dl.h) 
547
548 dnl ** check for farcalloc (in bcc)
549 AC_CHECK_HEADER(alloc.h,AC_CHECK_FUNCS(farcalloc))
550
551 dnl ** check for valloc (in sunos, solaris, mips, amiga, next, minix, ultrix)
552 AC_CHECK_HEADER(malloc.h,AC_CHECK_FUNCS(valloc))
553
554 dnl ** how do we get a timezone name, and UTC offset ?
555 AC_STRUCT_TIMEZONE
556
557 dnl ** what's the type of timezone?
558 FPTOOLS_HAVE_TIMEZONE
559 FPTOOLS_TYPE_TIMEZONE
560
561 dnl ** do we have altzone?
562 FPTOOLS_ALTZONE
563
564 dnl ** does struct stat contain st_blksize?
565 AC_STRUCT_ST_BLKSIZE
566
567 dnl ** do we have long longs?
568 FPTOOLS_C_LONG_LONG
569
570 dnl ** what are the sizes of various types
571 dnl    (these must come before GHC_CHECK_ALIGNMENT)
572 AC_CHECK_SIZEOF(char,               1)
573 AC_CHECK_SIZEOF(double,             8)
574 AC_CHECK_SIZEOF(float,              4)
575 AC_CHECK_SIZEOF(int,                4)
576 AC_CHECK_SIZEOF(long,               4)
577 if test "$fptools_cv_have_long_long" = yes; then
578 AC_CHECK_SIZEOF(long long,          8)
579 fi
580 AC_CHECK_SIZEOF(short,              2)
581 AC_CHECK_SIZEOF(unsigned char,      1)
582 AC_CHECK_SIZEOF(unsigned int,       4)
583 AC_CHECK_SIZEOF(unsigned long,      4)
584 if test "$fptools_cv_have_long_long" = yes; then
585 AC_CHECK_SIZEOF(unsigned long long, 8)
586 fi
587 AC_CHECK_SIZEOF(unsigned short,     2)
588 AC_CHECK_SIZEOF(void *,             4)
589
590 dnl ** what are alignment constraints on various types
591 FPTOOLS_CHECK_ALIGNMENT(char)
592 FPTOOLS_CHECK_ALIGNMENT(double)
593 FPTOOLS_CHECK_ALIGNMENT(float)
594 FPTOOLS_CHECK_ALIGNMENT(int)
595 FPTOOLS_CHECK_ALIGNMENT(long)
596 if test "$fptools_cv_have_long_long" = yes; then
597 FPTOOLS_CHECK_ALIGNMENT(long long)
598 fi
599 FPTOOLS_CHECK_ALIGNMENT(short)
600 FPTOOLS_CHECK_ALIGNMENT(unsigned char)
601 FPTOOLS_CHECK_ALIGNMENT(unsigned int)
602 FPTOOLS_CHECK_ALIGNMENT(unsigned long)
603 if test "$fptools_cv_have_long_long" = yes; then
604 FPTOOLS_CHECK_ALIGNMENT(unsigned long long)
605 fi
606 FPTOOLS_CHECK_ALIGNMENT(unsigned short)
607 FPTOOLS_CHECK_ALIGNMENT(void *)
608
609 dnl ** can we open files in binary mode?
610 FPTOOLS_O_BINARY
611
612 dnl ** check for GetModuleFileName and WinExec (windows only)
613 dnl Old: AC_CHECK_FUNCS(WinExec GetModuleFileName)       dnl Windows
614 dnl Doesn't work because the linker can't see the functions if
615 dnl you omit the #include <windows.h>.  (I've no idea why not...)
616
617 FPTOOLS_TRY_LINK_NOWARN(,[
618 #if HAVE_WINDOWS_H
619 #include <windows.h>
620 #endif
621 main() { 
622   WinExec("",0);
623   exit(0);
624 }
625 ],
626 [have_winexec=1],
627 [have_winexec=0])
628 if test "$have_winexec" = "1"; then
629 AC_DEFINE(HAVE_WINEXEC)
630 fi
631
632 FPTOOLS_TRY_LINK_NOWARN(,[
633 #if HAVE_WINDOWS_H
634 #include <windows.h>
635 #endif
636 main() { 
637   char* dir;
638   GetModuleFileName((HMODULE)0,dir,0);
639   exit(0);
640 }
641 ],
642 [have_getmodulefilename=1],
643 [have_getmodulefilename=0])
644 if test "$have_getmodulefilename" = "1"; then
645 AC_DEFINE(HAVE_GETMODULEFILENAME)
646 fi
647
648 dnl ** check return type of signal handlers
649 dnl Foo: assumes we can use prototypes.
650 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
651 dnl AC_CACHE_CHECK([type of signal handlers], ac_cv_type_signal_handler,
652 dnl [AC_TRY_COMPILE([#include <sys/types.h>
653 dnl #include <signal.h>
654 dnl #ifdef signal
655 dnl #undef signal
656 dnl #endif
657 dnl void (*signal (int, void (*)(int)))(int);
658 dnl ],
659 dnl [int i;], 
660 dnl ac_cv_type_signal_handler=void_int,
661 dnl ac_cv_type_signal_handler=int_void)])
662 dnl if test "$ac_cv_type_signal_handler" = void_int; then
663 dnl AC_DEFINE(VOID_INT_SIGNALS)
664 dnl fi
665
666 dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
667 AC_TYPE_SIGNAL
668 if test "$ac_cv_type_signal" = void; then
669 AC_DEFINE(VOID_INT_SIGNALS)
670 fi
671
672 dnl ** check for more functions
673 AC_CHECK_FUNCS(strcasecmp _stricmp stricmp strcmpi)
674 AC_CHECK_FUNCS(strcmp)
675 AC_CHECK_FUNCS(realpath _fullpath)  
676 AC_CHECK_FUNCS(PBHSetVolSync macsystem)  
677 AC_CHECK_FUNCS(fgetpos fsetpos fseek ftell)
678 AC_CHECK_FUNCS(vsnprintf _vsnprintf)
679 AC_CHECK_FUNCS(snprintf  _snprintf )  
680 AC_CHECK_FUNCS(popen     _popen )  
681 AC_CHECK_FUNCS(pclose    _pclose )  
682
683
684 dnl ** check for specific library functions that we are interested in
685 AC_CHECK_FUNCS(access ftime getclock getpagesize getrusage gettimeofday mktime mprotect readlink setitimer stat symlink sysconf timelocal times vadvise vfork)
686
687 dnl ** check whether this machine has gmp2 installed
688 AC_CHECK_LIB(gmp,  mpz_fdiv_qr, HaveLibGmp=YES; LibGmp=gmp,
689   AC_CHECK_LIB(gmp2, mpz_fdiv_qr,  HaveLibGmp=YES; LibGmp=gmp2,
690     HaveLibGmp=No; LibGmp=not-installed))
691 AC_SUBST(HaveLibGmp)
692 AC_SUBST(LibGmp)
693
694 dnl ** check whether this machine has BFD and liberty installed (used for debugging)
695 dnl    the order of these tests matters: bfd needs liberty
696 AC_CHECK_LIB(iberty, xmalloc)
697 AC_CHECK_LIB(bfd,    bfd_init)
698
699 dnl ** check for readline, for Hugs and hslibs' Readline
700 dnl ncurses supersedes termcap and curses, but for compatibility,
701 dnl we have to check for all...
702 AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
703   AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
704     AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
705       HaveLibTermcap=NO; LibTermcap=not-installed)))
706
707 if test $HaveLibTermcap = YES ; then
708   LIBS="-l$LibTermcap $LIBS"
709   AC_CHECK_LIB(readline, readline, HaveLibReadline=YES, HaveLibReadline=NO)
710 fi
711
712 if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES ; then
713   AC_DEFINE(HAVE_READLINE_LIBS,1)
714   LibsReadline="-lreadline -l$LibTermcap"
715 else
716   AC_DEFINE(HAVE_READLINE_LIBS,0)
717   LibsReadline=
718 fi
719 AC_SUBST(LibsReadline)
720
721 dnl ################################################################
722 dnl Check for libraries
723 dnl ################################################################
724
725 FPTOOLS_CHECK_LIB_NOWARN(dl, dlopen)
726 FPTOOLS_CHECK_LIB_NOWARN(dld, shl_load)
727 FPTOOLS_CHECK_LIB_NOWARN(m, atan)
728
729 dnl --------------------------------------------------
730 dnl * Miscellaneous feature tests
731 dnl --------------------------------------------------
732
733 dnl ** can we get alloca?
734 AC_FUNC_ALLOCA
735
736 dnl ** determine whether or not const works
737 AC_C_CONST
738
739 dnl ** determine whether ANSI-function prototypes work?
740 AC_C_PROTOTYPES          
741
742 dnl ** are we big endian?
743 AC_C_BIGENDIAN
744 # Allay users' general fear of warnings of any kind.
745 errprint((fptools configure script wizard sez: "don't worry, the above warning is harmless (to us.)")
746 )
747
748 dnl ** check for leading underscores in symbol names
749 FPTOOLS_UNDERSCORE
750
751 dnl ** how is the end of text section signalled?
752 FPTOOLS_END_TEXT_SECTION
753
754 dnl ** how is the end of data section signalled?
755 FPTOOLS_END_DATA_SECTION
756
757 dnl ** code before data?
758 FPTOOLS_CODE_BEFORE_DATA
759
760 AC_OUTPUT(mk/config.mk, echo timestamp > mk/stamp-h )
761
762 echo ''
763 echo '************************************************'
764 echo '*** NOW DO: gmake boot followed by gmake all'
765 echo '***         (where gmake == GNU make)'
766 echo '************************************************'
767 exit 0