1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996,1997,1998,2000 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: dnl We use some automake macros here,
22: dnl but don't use automake for creating Makefile.in
23: AC_INIT([gforth],[0.5.9-20030201],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
24: #snapshots have numbers major.minor.release-YYYYMMDD
25: #note that lexicographic ordering must be heeded.
26: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
27: UPDATED="February 1st, 2003"
28: AC_SUBST(UPDATED)
29: AC_CONFIG_HEADERS(engine/config.h)
30:
31: #default setting that may be changed later:
32: no_dynamic_default=0
33:
34: AC_ARG_ENABLE(force-reg,
35: [ --enable-force-reg Use explicit register declarations if they appear in
36: the machine.h file. This can cause a good speedup,
37: but also incorrect code with some gcc versions on
38: some processors (default disabled).],
39: 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)]))
40:
41: AC_ARG_WITH(debug,
42: [ --with-debug specifies option -g to compile with debug info (default)
43: --without-debug omits the -g switch and creates smaller images on
44: machines where "strip" has problems with gcc style
45: debugging informations.],
46: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
47:
48: dnl PEEPHOLE="yes"
49: dnl AC_ARG_WITH(peephole,
50: dnl [ --with-peephole Enable peephole optimization (default)
51: dnl --without-peephole disables peephole optimization. Creates smaller,
52: dnl but slower images.],
53: dnl PEEPHOLE="$withval")
54:
55: #variables mentioned in INSTALL
56: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x).])
57: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
58: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
59: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
60: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
61: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
62: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
63: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
64: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
65: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
66: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no)?])
67:
68: #set up feature test macros, so the tests get them right:
69: # turn on all POSIX, SUSv3, and GNU features if available
70: AC_GNU_SOURCE
71: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
72:
73: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
74: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
75: dnl but not for _XOPEN_SOURCE)
76: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
77: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
78: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
79: # turn on large file support with 64-bit off_t where available
80: AC_SYS_LARGEFILE
81: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
82: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
83:
84: #currently we force direct threading this way. Eventually we should
85: #setup in the arch and engine files right
86:
87: CFLAGS=$CFLAGS
88:
89: AC_PROG_CC
90:
91: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
92:
93: AC_SUBST(CC)
94: AC_SUBST(DEBUGFLAG)
95:
96: dnl gcc-3.2 seems to work fine now
97: dnl AC_MSG_CHECKING(gcc version)
98: dnl gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`
99: dnl AC_MSG_RESULT($gcc_version)
100: dnl if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null
101: dnl then
102: dnl no_dynamic_default=1
103: dnl AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
104: dnl fi
105:
106: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
107: OLDLDFLAGS=$LDFLAGS
108: LDFLAGS="$LDFLAGS -export-dynamic"
109: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
110: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
111: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
112: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
113: AC_MSG_RESULT($ac_export_dynamic)
114:
115: #terminology is a bit unusual here: The host is the system on which
116: #gforth will run; the system on which configure will run is the `build'
117: AC_CANONICAL_HOST
118: case "$host_cpu" in
119: hppa*)
120: machine=hppa
121: $srcdir/mkinstalldirs arch/hppa
122: AC_LIBOBJ(../arch/hppa/cache)
123: #LDFLAGS="$LDFLAGS -Xlinker -N"
124: LIBS="$LIBS -L/lib/pa1.1/"
125: ;;
126: sparc*)
127: machine=sparc
128: ;;
129: i386)
130: machine=386
131: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
132: ;;
133: i486)
134: machine=386
135: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
136: ;;
137: i*86)
138: machine=386
139: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
140: CFLAGS_1="$CFLAGS"
141: CFLAGS="$CFLAGS -march=pentium"
142: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
143: ;;
144: #generic should work for IA64
145: # ia64*)
146: # machine=ia64
147: # ;;
148: m68k)
149: machine=m68k
150: CFLAGS="$CFLAGS -fomit-frame-pointer"
151: if test "$host_os" = "nextstep3"
152: then
153: AC_LIBOBJ(termios)
154: fi
155: ;;
156: mips*)
157: machine=mips
158: #dynamic native code has the following problems on MIPS:
159: #
160: #1) J/JAL seems relocatable, but is are only
161: #relocatable within a 256MB-segment. While we try to
162: #get the linker to arrange this, there is no guarantee
163: #that this will succeed (and if the user uses a lot of
164: #memory, it is likely to fail).
165: #
166: #2) The way we generate dynamic native code may
167: #violate MIPS architectural restrictions (in
168: #particular, the delay slots of LW, MFLO, etc.)
169: #
170: #Therefore we disable dynamic native code by default:
171: no_dynamic_default=1
172: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
173: ;;
174: alpha*)
175: machine=alpha
176: #full IEEE FP support for more uniformity across platforms:
177: CFLAGS="$CFLAGS -mieee"
178: ;;
179: power*|rs6000)
180: machine=power
181: $srcdir/mkinstalldirs arch/power
182: AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
183: #long long is broken on (at least) gcc-2.95.* for PPC
184: test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
185: ;;
186: *)
187: AC_MSG_WARN([Using a generic machine description])
188: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
189: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
190: machine=generic
191: #I-cache flushing would be needed for dynamic code generation
192: no_dynamic_default=1
193: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
194: esac
195: AC_SUBST(host)
196:
197: dnl the following macro produces a warning with autoconf-2.1
198: AC_CHECK_SIZEOF(char *)
199: case "$ac_cv_sizeof_char_p" in
200: 2)
201: wordsize=16
202: ;;
203: 4)
204: wordsize=32
205: ;;
206: 8)
207: wordsize=64
208: ;;
209: esac
210:
211: AC_CHECK_SIZEOF(char)
212: AC_CHECK_SIZEOF(short)
213: AC_CHECK_SIZEOF(int)
214: AC_CHECK_SIZEOF(long)
215: AC_CHECK_SIZEOF(long long)
216: AC_CHECK_SIZEOF(intptr_t)
217: AC_CHECK_SIZEOF(int128_t)
218:
219: AC_MSG_CHECKING([for a C type for cells])
220: ac_cv_int_type_cell=none
221: case "$ac_cv_sizeof_char_p" in
222: $ac_cv_sizeof_int)
223: ac_cv_int_type_cell=int
224: ;;
225: $ac_cv_sizeof_short)
226: ac_cv_int_type_cell=short
227: ;;
228: $ac_cv_sizeof_char)
229: ac_cv_int_type_cell=char
230: ;;
231: $ac_cv_sizeof_long)
232: ac_cv_int_type_cell=long
233: ;;
234: $ac_cv_sizeof_long_long)
235: ac_cv_int_type_cell="long long"
236: ;;
237: $ac_cv_sizeof_intptr_t)
238: ac_cv_int_type_cell="intptr_t"
239: ;;
240: $ac_cv_sizeof_int128_t)
241: ac_cv_int_type_cell="int128_t"
242: ;;
243: esac
244: AC_MSG_RESULT($ac_cv_int_type_cell)
245: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
246:
247: AC_MSG_CHECKING([for a C type for double-cells])
248: ac_cv_int_type_double_cell=none
249: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
250: $ac_cv_sizeof_short)
251: ac_cv_int_type_double_cell=short
252: ;;
253: $ac_cv_sizeof_int)
254: ac_cv_int_type_double_cell=int
255: ;;
256: $ac_cv_sizeof_long)
257: ac_cv_int_type_double_cell=long
258: ;;
259: $ac_cv_sizeof_long_long)
260: ac_cv_int_type_double_cell="long long"
261: ;;
262: $ac_cv_sizeof_intptr_t)
263: ac_cv_int_type_double_cell="intptr_t"
264: ;;
265: $ac_cv_sizeof_int128_t)
266: ac_cv_int_type_double_cell="int128_t"
267: ;;
268: esac
269: AC_MSG_RESULT($ac_cv_int_type_double_cell)
270: if test "$ac_cv_int_type_double_cell" = none; then
271: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
272: AC_LIBOBJ(dblsub)
273: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
274: else
275: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
276: fi
277:
278: AC_TYPE_OFF_T
279: AC_CHECK_SIZEOF(off_t)
280: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
281: ac_small_off_t=$?
282: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
283:
284: ENGINE_FLAGS=
285: AC_SUBST(ENGINE_FLAGS)
286:
287: # Try if GCC understands -fno-gcse
288:
289: AC_MSG_CHECKING([if $CC understands -fno-gcse])
290: CFLAGS_1="$CFLAGS"
291: CFLAGS="$CFLAGS -fno-gcse"
292: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
293: CFLAGS="$CFLAGS_1"
294: AC_MSG_RESULT($ac_nogcse)
295:
296: # Try if GCC understands -fno-strict-aliasing
297:
298: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
299: CFLAGS_1="$CFLAGS"
300: CFLAGS="$CFLAGS -fno-strict-aliasing"
301: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
302: CFLAGS="$CFLAGS_1"
303: AC_MSG_RESULT($ac_nostrictaliasing)
304:
305: # Try if GCC understands -fno-cross-jump
306:
307: AC_MSG_CHECKING([if $CC understands -fno-cross-jump])
308: CFLAGS_1="$CFLAGS"
309: CFLAGS="$CFLAGS -fno-cross-jump"
310: AC_TRY_COMPILE(,,ac_nocrossjump=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-cross-jump",ac_nocrossjump=no)
311: CFLAGS="$CFLAGS_1"
312: AC_MSG_RESULT($ac_nocrossjump)
313:
314: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
315: AC_SUBST(asm_fs)
316:
317: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
318: AC_SUBST(disasm_fs)
319:
320: case "$host_os" in
321: *win32|cygwin)
322: DIRSEP="\\\\"
323: ;;
324: *darwin*)
325: #Darwin uses some funny preprocessor by default; eliminate it:
326: AC_MSG_NOTICE([using -traditional-cpp on Darwin])
327: CFLAGS="$CFLAGS -traditional-cpp"
328: DIRSEP="/"
329: ;;
330: *)
331: DIRSEP="/"
332: ;;
333: esac
334: AC_SUBST(DIRSEP)
335: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
336:
337: dnl Now a little support for DOS/DJGCC
338: AC_SUBST(GFORTH_EXE)
339: GFORTH_EXE=""
340: AC_SUBST(GFORTHFAST_EXE)
341: GFORTHFAST_EXE=""
342: AC_SUBST(GFORTHITC_EXE)
343: GFORTHITC_EXE=""
344: AC_SUBST(GFORTHDITC_EXE)
345: GFORTHDITC_EXE=""
346:
347: PATHSEP=":"
348: AC_SUBST(PATHSEP)
349: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
350:
351: AC_SUBST(FORTHSIZES)
352:
353: dnl if test "$PEEPHOLE" = "yes"
354: dnl then
355: dnl PEEPHOLEFLAG="true"
356: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
357: dnl else
358: dnl PEEPHOLEFLAG="false"
359: dnl fi
360: PEEPHOLEFLAG="true"
361: AC_SUBST(PEEPHOLEFLAG)
362:
363: dnl copy commands for systems that don't have links
364: AC_SUBST(LINK_KERNL)
365: LINK_KERNL=""
366:
367: #if test $host_os=dos
368: #then
369: # echo Configuring for DOS!!!
370: # MAKE_EXE="coff2exe gforth"
371: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
372: #fi
373:
374: dnl the following macro produces a warning with autoconf-2.1
375: AC_C_BIGENDIAN
376: AC_SUBST(KERNEL)
377: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
378: if test $ac_cv_c_bigendian = yes; then
379: bytesex=b
380: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
381: else
382: bytesex=l
383: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
384: fi
385:
386: #check how to do asm(".skip 16")
387: AC_MSG_CHECKING([if and how we can waste code space])
388: skipcode=no
389: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
390: do
391: AC_TRY_RUN(
392: int foo(int);
393: main()
394: {
395: exit(foo(0)!=16);
396: }
397: int foo(int x)
398: {
399: if (x) {
400: label1:
401: asm("$i");
402: label2:
403: }
404: return (&&label2)-(&&label1);
405: }
406: ,skipcode=$i; break
407: ,,)
408: done
409: AC_MSG_RESULT($skipcode)
410: if test "$skipcode" = no
411: then
412: no_dynamic_default=1
413: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
414: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
415: else
416: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
417: fi
418:
419: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
420:
421: dnl Checks for programs.
422: AC_PROG_LN_S
423: AC_PROG_INSTALL
424:
425: dnl Checks for library functions
426: dnl This check is just for making later checks link with libm.
427: dnl using sin here is no good idea since it is built-into gcc and typechecked
428: AC_CHECK_LIB(m,asin)
429: AC_CHECK_LIB(dl,dlopen)
430: if test "$host_os" != "nextstep3"
431: then
432: AC_FUNC_MEMCMP
433: fi
434: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
435: AC_FUNC_FSEEKO
436: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
437: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
438: AC_DECL_SYS_SIGLIST
439: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
440: AC_CHECK_FUNCS(expm1 log1p)
441: AC_REPLACE_FUNCS(rint ecvt)
442: dnl No check for select, because our replacement is no good under
443: dnl anything but DOS
444: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
445: AC_FUNC_FNMATCH
446: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
447: AC_CHECK_FUNCS(mmap sysconf getpagesize)
448: AM_PATH_LISPDIR
449:
450: kernel_fi=kernl${wordsize}${bytesex}.fi
451: AC_SUBST(kernel_fi)
452:
453: #this breaks bindists
454: #dnl replace srource directory by absolute value
455: #if test $srcdir = "."; then srcdir=`pwd`
456: #fi
457:
458: AC_SUBST(machine)
459: AC_CONFIG_FILES([
460: Makefile
461: Makedist
462: gforthmi
463: vmgen
464: machpc.fs
465: engine/Makefile
466: doc/version.texi ])
467: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
468: chmod +x gforthmi
469: chmod +x vmgen
470: test -d kernel||mkdir kernel]],[[]])
471: AC_OUTPUT
472:
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