1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.
4:
5: #This file is part of Gforth.
6:
7: #Gforth is free software; you can redistribute it and/or
8: #modify it under the terms of the GNU General Public License
9: #as published by the Free Software Foundation; either version 2
10: #of the License, or (at your option) any later version.
11:
12: #This program is distributed in the hope that it will be useful,
13: #but WITHOUT ANY WARRANTY; without even the implied warranty of
14: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
15: #GNU General Public License for more details.
16:
17: #You should have received a copy of the GNU General Public License
18: #along with this program; if not, write to the Free Software
19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21:
22: dnl We use some automake macros here,
23: dnl but don't use automake for creating Makefile.in
24: AC_INIT([gforth],[0.6.2],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
25: AC_PREREQ(2.54)
26: #snapshots have numbers major.minor.release-YYYYMMDD
27: #note that lexicographic ordering must be heeded.
28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
29: UPDATED="August 25, 2003"
30: AC_SUBST(UPDATED)
31: AC_CONFIG_HEADERS(engine/config.h)
32:
33: #suppress the "-g -O2" default
34: test "$CFLAGS" || CFLAGS=-O2
35:
36: #default setting that may be changed later:
37: test "$no_dynamic_default" || no_dynamic_default=0
38:
39: AC_ARG_ENABLE(force-reg,
40: [ --enable-force-reg Use explicit register declarations if they appear in
41: the machine.h file. This can cause a good speedup,
42: but also incorrect code with some gcc versions on
43: some processors (default disabled).],
44: AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)]))
45:
46: AC_ARG_WITH(debug,
47: [ --with-debug specifies option -g to compile with debug info
48: --without-debug omits the -g switch and creates smaller images on
49: machines where "strip" has problems with gcc style
50: debugging informations.],
51: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
52:
53: dnl PEEPHOLE="yes"
54: dnl AC_ARG_WITH(peephole,
55: dnl [ --with-peephole Enable peephole optimization (default)
56: dnl --without-peephole disables peephole optimization. Creates smaller,
57: dnl but slower images.],
58: dnl PEEPHOLE="$withval")
59:
60: #variables mentioned in INSTALL
61: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
62: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
63: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
64: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
65: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
66: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
67: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
68: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
69: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
70: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
71: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
72: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
73:
74: #set up feature test macros, so the tests get them right:
75: # turn on all POSIX, SUSv3, and GNU features if available
76: AC_GNU_SOURCE
77: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
78:
79: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
80: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
81: dnl but not for _XOPEN_SOURCE)
82: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
83: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
84: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
85: # turn on large file support with 64-bit off_t where available
86: AC_SYS_LARGEFILE
87: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
88: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
89:
90: #currently we force direct threading this way. Eventually we should
91: #setup in the arch and engine files right
92:
93: AC_PROG_CC
94:
95: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
96:
97: AC_SUBST(CC)
98: AC_SUBST(DEBUGFLAG)
99:
100: AC_MSG_CHECKING(make type)
101: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
102:
103: GNUMAKE='#'
104: test "$make_type" = "GNU Make" && GNUMAKE=''
105:
106: AC_MSG_RESULT($make_type)
107:
108: AC_SUBST(GNUMAKE)
109:
110: dnl gcc-3.2 seems to work fine now
111: dnl AC_MSG_CHECKING(gcc version)
112: dnl gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`
113: dnl AC_MSG_RESULT($gcc_version)
114: dnl if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null
115: dnl then
116: dnl no_dynamic_default=1
117: dnl AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
118: dnl fi
119:
120: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
121: OLDLDFLAGS=$LDFLAGS
122: LDFLAGS="$LDFLAGS -export-dynamic"
123: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
124: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
125: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
126: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
127: AC_MSG_RESULT($ac_export_dynamic)
128:
129: #terminology is a bit unusual here: The host is the system on which
130: #gforth will run; the system on which configure will run is the `build'
131: AC_CANONICAL_HOST
132: case "$host_cpu" in
133: hppa*)
134: machine=hppa
135: $srcdir/mkinstalldirs arch/hppa
136: AC_LIBOBJ(../arch/hppa/cache)
137: #LDFLAGS="$LDFLAGS -Xlinker -N"
138: LIBS="$LIBS -L/lib/pa1.1/"
139: #executing dynamically generated code produced segfaults on
140: #the only HPPA machine that could waste code space, so
141: #disable it by default
142: no_dynamic_default=1
143: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
144: ;;
145: sparc*)
146: machine=sparc
147: ;;
148: i386)
149: machine=386
150: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
151: ;;
152: i486)
153: machine=386
154: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
155: ;;
156: i*86)
157: machine=386
158: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
159: CFLAGS_1="$CFLAGS"
160: CFLAGS="$CFLAGS -march=pentium"
161: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
162: ;;
163: x86_64)
164: machine=amd64
165: ;;
166: #generic should work for IA64
167: # ia64*)
168: # machine=ia64
169: # ;;
170: m68k)
171: machine=m68k
172: CFLAGS="$CFLAGS -fomit-frame-pointer"
173: if test "$host_os" = "nextstep3"
174: then
175: AC_LIBOBJ(termios)
176: fi
177: ;;
178: mips*)
179: machine=mips
180: #dynamic native code has the following problems on MIPS:
181: #
182: #1) J/JAL seems relocatable, but is are only
183: #relocatable within a 256MB-segment. While we try to
184: #get the linker to arrange this, there is no guarantee
185: #that this will succeed (and if the user uses a lot of
186: #memory, it is likely to fail).
187: #
188: #2) The way we generate dynamic native code may
189: #violate MIPS architectural restrictions (in
190: #particular, the delay slots of LW, MFLO, etc.)
191: #
192: #Therefore we disable dynamic native code by default:
193: no_dynamic_default=1
194: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
195: ;;
196: alpha*)
197: machine=alpha
198: #full IEEE FP support for more uniformity across platforms:
199: CFLAGS="$CFLAGS -mieee"
200: ;;
201: power*|rs6000)
202: machine=power
203: $srcdir/mkinstalldirs arch/power
204: AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
205: #long long is broken on (at least) gcc-2.95.* for PPC
206: test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
207: ;;
208: *)
209: AC_MSG_WARN([Using a generic machine description])
210: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
211: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
212: machine=generic
213: #I-cache flushing would be needed for dynamic code generation
214: no_dynamic_default=1
215: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
216: esac
217: AC_SUBST(host)
218:
219: dnl the following macro produces a warning with autoconf-2.1
220: AC_CHECK_SIZEOF(char *)
221: case "$ac_cv_sizeof_char_p" in
222: 2)
223: wordsize=16
224: ;;
225: 4)
226: wordsize=32
227: ;;
228: 8)
229: wordsize=64
230: ;;
231: esac
232:
233: AC_CHECK_SIZEOF(char)
234: AC_CHECK_SIZEOF(short)
235: AC_CHECK_SIZEOF(int)
236: AC_CHECK_SIZEOF(long)
237: AC_CHECK_SIZEOF(long long)
238: AC_CHECK_SIZEOF(intptr_t)
239: AC_CHECK_SIZEOF(int128_t)
240:
241: AC_MSG_CHECKING([for a C type for cells])
242: ac_cv_int_type_cell=none
243: case "$ac_cv_sizeof_char_p" in
244: $ac_cv_sizeof_int)
245: ac_cv_int_type_cell=int
246: ;;
247: $ac_cv_sizeof_short)
248: ac_cv_int_type_cell=short
249: ;;
250: $ac_cv_sizeof_char)
251: ac_cv_int_type_cell=char
252: ;;
253: $ac_cv_sizeof_long)
254: ac_cv_int_type_cell=long
255: ;;
256: $ac_cv_sizeof_long_long)
257: ac_cv_int_type_cell="long long"
258: ;;
259: $ac_cv_sizeof_intptr_t)
260: ac_cv_int_type_cell="intptr_t"
261: ;;
262: $ac_cv_sizeof_int128_t)
263: ac_cv_int_type_cell="int128_t"
264: ;;
265: esac
266: AC_MSG_RESULT($ac_cv_int_type_cell)
267: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
268:
269: AC_MSG_CHECKING([for a C type for double-cells])
270: ac_cv_int_type_double_cell=none
271: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
272: $ac_cv_sizeof_short)
273: ac_cv_int_type_double_cell=short
274: ;;
275: $ac_cv_sizeof_int)
276: ac_cv_int_type_double_cell=int
277: ;;
278: $ac_cv_sizeof_long)
279: ac_cv_int_type_double_cell=long
280: ;;
281: $ac_cv_sizeof_long_long)
282: ac_cv_int_type_double_cell="long long"
283: ;;
284: $ac_cv_sizeof_intptr_t)
285: ac_cv_int_type_double_cell="intptr_t"
286: ;;
287: $ac_cv_sizeof_int128_t)
288: ac_cv_int_type_double_cell="int128_t"
289: ;;
290: esac
291: AC_MSG_RESULT($ac_cv_int_type_double_cell)
292: if test "$ac_cv_int_type_double_cell" = none; then
293: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
294: AC_LIBOBJ(dblsub)
295: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
296: else
297: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
298: fi
299:
300: AC_TYPE_OFF_T
301: AC_CHECK_SIZEOF(off_t)
302: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
303: ac_small_off_t=$?
304: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
305:
306: ENGINE_FLAGS=
307: AC_SUBST(ENGINE_FLAGS)
308:
309: # Try if GCC understands -fno-gcse
310:
311: AC_MSG_CHECKING([if $CC understands -fno-gcse])
312: CFLAGS_1="$CFLAGS"
313: CFLAGS="$CFLAGS -fno-gcse"
314: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
315: CFLAGS="$CFLAGS_1"
316: AC_MSG_RESULT($ac_nogcse)
317:
318: # Try if GCC understands -fno-strict-aliasing
319: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
320: CFLAGS_1="$CFLAGS"
321: CFLAGS="$CFLAGS -fno-strict-aliasing"
322: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
323: CFLAGS="$CFLAGS_1"
324: AC_MSG_RESULT($ac_nostrictaliasing)
325:
326: # Try if GCC understands -fno-crossjumping
327: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
328: CFLAGS_1="$CFLAGS"
329: CFLAGS="$CFLAGS -fno-crossjumping"
330: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
331: CFLAGS="$CFLAGS_1"
332: AC_MSG_RESULT($ac_nocrossjumping)
333:
334: # Try if GCC understands __attribute__((unused))
335: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
336: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
337: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
338: AC_MSG_RESULT($MAYBE_UNUSED)
339:
340: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
341: AC_SUBST(asm_fs)
342:
343: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
344: AC_SUBST(disasm_fs)
345:
346: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
347:
348: case "$host_os" in
349: *win32|cygwin)
350: DIRSEP="\\\\"
351: PATHSEP=";"
352: ;;
353: *darwin*)
354: #Darwin uses some funny preprocessor by default; eliminate it:
355: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
356: CFLAGS="$CFLAGS -no-cpp-precomp"
357: DIRSEP="/"
358: PATHSEP=":"
359: ;;
360: *)
361: DIRSEP="/"
362: PATHSEP=":"
363: ;;
364: esac
365: AC_SUBST(DIRSEP)
366: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
367: AC_SUBST(PATHSEP)
368: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
369:
370:
371: dnl Now a little support for DOS/DJGCC
372: AC_SUBST(GFORTH_EXE)
373: GFORTH_EXE=""
374: AC_SUBST(GFORTHFAST_EXE)
375: GFORTHFAST_EXE=""
376: AC_SUBST(GFORTHITC_EXE)
377: GFORTHITC_EXE=""
378: AC_SUBST(GFORTHDITC_EXE)
379: GFORTHDITC_EXE=""
380:
381: AC_SUBST(FORTHSIZES)
382:
383: dnl if test "$PEEPHOLE" = "yes"
384: dnl then
385: dnl PEEPHOLEFLAG="true"
386: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
387: dnl else
388: dnl PEEPHOLEFLAG="false"
389: dnl fi
390: PEEPHOLEFLAG="true"
391: AC_SUBST(PEEPHOLEFLAG)
392:
393: dnl copy commands for systems that don't have links
394: AC_SUBST(LINK_KERNL)
395: LINK_KERNL=""
396:
397: #if test $host_os=dos
398: #then
399: # echo Configuring for DOS!!!
400: # MAKE_EXE="coff2exe gforth"
401: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
402: #fi
403:
404: dnl the following macro produces a warning with autoconf-2.1
405: AC_C_BIGENDIAN
406: AC_SUBST(KERNEL)
407: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
408: if test $ac_cv_c_bigendian = yes; then
409: bytesex=b
410: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
411: else
412: bytesex=l
413: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
414: fi
415:
416: #check how to do asm(".skip 16")
417: AC_MSG_CHECKING([if and how we can waste code space])
418: skipcode=no
419: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
420: do
421: AC_TRY_RUN(
422: int foo(int);
423: main()
424: {
425: exit(foo(0)!=16);
426: }
427: int foo(int x)
428: {
429: if (x) {
430: label1:
431: asm("$i");
432: label2:
433: }
434: return (&&label2)-(&&label1);
435: }
436: ,skipcode=$i; break
437: ,,)
438: done
439: AC_MSG_RESULT($skipcode)
440: if test "$skipcode" = no
441: then
442: no_dynamic_default=1
443: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
444: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
445: else
446: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
447: fi
448:
449: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
450:
451: dnl Checks for programs.
452: AC_PROG_LN_S
453: AC_PROG_INSTALL
454:
455: dnl Checks for library functions
456: dnl This check is just for making later checks link with libm.
457: dnl using sin here is no good idea since it is built-into gcc and typechecked
458: AC_CHECK_LIB(m,asin)
459: AC_CHECK_LIB(dl,dlopen)
460: dnl check for ffcall libraries
461: dnl unfortunately, these four calls are separated out into a library each.
462: AC_CHECK_LIB(avcall,__builtin_avcall)
463: AC_CHECK_LIB(callback,__vacall_r)
464: AC_CHECK_LIB(vacall,vacall)
465: AC_CHECK_LIB(trampoline,alloc_trampoline)
466: FFCALLFLAG="false"
467: OLDCALLFLAG="true"
468: test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && OLDCALLFLAG="false" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries])
469: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
470: AC_SUBST(FFCALLFLAG)
471: AC_SUBST(OLDCALLFLAG)
472: if test "$host_os" != "nextstep3"
473: then
474: AC_FUNC_MEMCMP
475: fi
476: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
477: AC_FUNC_FSEEKO
478: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
479: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
480: AC_DECL_SYS_SIGLIST
481: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
482: AC_CHECK_FUNCS(expm1 log1p)
483: AC_REPLACE_FUNCS(rint ecvt)
484: dnl No check for select, because our replacement is no good under
485: dnl anything but DOS
486: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
487: AC_FUNC_FNMATCH
488: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
489: AC_CHECK_FUNCS(mmap sysconf getpagesize)
490: AM_PATH_LISPDIR
491:
492: kernel_fi=kernl${wordsize}${bytesex}.fi
493: AC_SUBST(kernel_fi)
494:
495: #this breaks bindists
496: #dnl replace srource directory by absolute value
497: #if test $srcdir = "."; then srcdir=`pwd`
498: #fi
499:
500: AC_SUBST(machine)
501: AC_CONFIG_FILES([
502: Makefile
503: Makedist
504: gforthmi
505: vmgen
506: machpc.fs
507: engine/Makefile
508: doc/version.texi ])
509: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
510: chmod +x gforthmi
511: chmod +x vmgen
512: test -d kernel||mkdir kernel]],[[]])
513: AC_OUTPUT
514:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>