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],[0.5.9-20021227],[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="27 December 2002"
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 "$withval" = "yes"; then DEBUGFLAG=-g; fi)
47:
48: PEEPHOLE="yes"
49: AC_ARG_WITH(peephole,
50: [ --with-peephole Enable peephole optimization (default)
51: --without-peephole disables peephole optimization. Creates smaller,
52: but slower images.],
53: PEEPHOLE="$withval")
54:
55: #set up feature test macros, so the tests get them right:
56: # turn on all POSIX, SUSv3, and GNU features if available
57: AC_GNU_SOURCE
58: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
59:
60: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
61: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
62: dnl but not for _XOPEN_SOURCE)
63: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
64: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
65: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
66: # turn on large file support with 64-bit off_t where available
67: AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
68: AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
69:
70: #currently we force direct threading this way. Eventually we should
71: #setup in the arch and engine files right
72:
73: CFLAGS=$CFLAGS
74:
75: AC_PROG_CC
76:
77: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
78:
79: AC_SUBST(CC)
80: AC_SUBST(DEBUGFLAG)
81:
82: dnl gcc-3.2 seems to work fine now
83: dnl AC_MSG_CHECKING(gcc version)
84: dnl gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`
85: dnl AC_MSG_RESULT($gcc_version)
86: dnl if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null
87: dnl then
88: dnl no_dynamic_default=1
89: dnl AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
90: dnl fi
91:
92: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
93: OLDLDFLAGS=$LDFLAGS
94: LDFLAGS="$LDFLAGS -export-dynamic"
95: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
96: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
97: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
98: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
99: AC_MSG_RESULT($ac_export_dynamic)
100:
101: #terminology is a bit unusual here: The host is the system on which
102: #gforth will run; the system on which configure will run is the `build'
103: AC_CANONICAL_HOST
104: case "$host_cpu" in
105: hppa*)
106: machine=hppa
107: $srcdir/mkinstalldirs arch/hppa
108: AC_LIBOBJ(../arch/hppa/cache)
109: LDFLAGS="$LDFLAGS -Xlinker -N"
110: LIBS="$LIBS -L/lib/pa1.1/"
111: ;;
112: sparc*)
113: machine=sparc
114: ;;
115: i386)
116: machine=386
117: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
118: ;;
119: i486)
120: machine=386
121: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
122: ;;
123: i*86)
124: machine=386
125: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
126: CFLAGS_1="$CFLAGS"
127: CFLAGS="$CFLAGS -march=pentium"
128: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
129: ;;
130: #generic should work for IA64
131: # ia64*)
132: # machine=ia64
133: # ;;
134: m68k)
135: machine=m68k
136: CFLAGS="$CFLAGS -fomit-frame-pointer"
137: if test "$host_os" = "nextstep3"
138: then
139: AC_LIBOBJ(termios)
140: fi
141: ;;
142: mips*)
143: machine=mips
144: #dynamic native code has the following problems on MIPS:
145: #
146: #1) J/JAL seems relocatable, but is are only
147: #relocatable within a 256MB-segment. While we try to
148: #get the linker to arrange this, there is no guarantee
149: #that this will succeed (and if the user uses a lot of
150: #memory, it is likely to fail).
151: #
152: #2) The way we generate dynamic native code may
153: #violate MIPS architectural restrictions (in
154: #particular, the delay slots of LW, MFLO, etc.)
155: #
156: #Therefore we disable dynamic native code by default:
157: no_dynamic_default=1
158: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
159: ;;
160: alpha*)
161: machine=alpha
162: #full IEEE FP support for more uniformity across platforms:
163: CFLAGS="$CFLAGS -mieee"
164: ;;
165: power*|rs6000)
166: machine=power
167: $srcdir/mkinstalldirs arch/power
168: AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
169: #long long is broken on (at least) gcc-2.95.* for PPC
170: ac_cv_sizeof_long_long=0
171: ;;
172: *)
173: AC_MSG_WARN([Using a generic machine description])
174: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
175: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
176: machine=generic
177: #I-cache flushing would be needed for dynamic code generation
178: no_dynamic_default=1
179: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
180: esac
181: AC_SUBST(host)
182: AC_SUBST(ENGINE_FLAGS)
183:
184: dnl the following macro produces a warning with autoconf-2.1
185: AC_CHECK_SIZEOF(char *)
186: case "$ac_cv_sizeof_char_p" in
187: 2)
188: wordsize=16
189: ;;
190: 4)
191: wordsize=32
192: ;;
193: 8)
194: wordsize=64
195: ;;
196: esac
197:
198: AC_CHECK_SIZEOF(char)
199: AC_CHECK_SIZEOF(short)
200: AC_CHECK_SIZEOF(int)
201: AC_CHECK_SIZEOF(long)
202: AC_CHECK_SIZEOF(long long)
203: AC_CHECK_SIZEOF(intptr_t)
204: AC_CHECK_SIZEOF(int128_t)
205:
206: AC_MSG_CHECKING([for a C type for cells])
207: ac_cv_int_type_cell=none
208: case "$ac_cv_sizeof_char_p" in
209: $ac_cv_sizeof_int)
210: ac_cv_int_type_cell=int
211: ;;
212: $ac_cv_sizeof_short)
213: ac_cv_int_type_cell=short
214: ;;
215: $ac_cv_sizeof_char)
216: ac_cv_int_type_cell=char
217: ;;
218: $ac_cv_sizeof_long)
219: ac_cv_int_type_cell=long
220: ;;
221: $ac_cv_sizeof_long_long)
222: ac_cv_int_type_cell="long long"
223: ;;
224: $ac_cv_sizeof_intptr_t)
225: ac_cv_int_type_cell="intptr_t"
226: ;;
227: $ac_cv_sizeof_int128_t)
228: ac_cv_int_type_cell="int128_t"
229: ;;
230: esac
231: AC_MSG_RESULT($ac_cv_int_type_cell)
232: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
233:
234: AC_MSG_CHECKING([for a C type for double-cells])
235: ac_cv_int_type_double_cell=none
236: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
237: $ac_cv_sizeof_short)
238: ac_cv_int_type_double_cell=short
239: ;;
240: $ac_cv_sizeof_int)
241: ac_cv_int_type_double_cell=int
242: ;;
243: $ac_cv_sizeof_long)
244: ac_cv_int_type_double_cell=long
245: ;;
246: $ac_cv_sizeof_long_long)
247: ac_cv_int_type_double_cell="long long"
248: ;;
249: $ac_cv_sizeof_intptr_t)
250: ac_cv_int_type_double_cell="intptr_t"
251: ;;
252: $ac_cv_sizeof_int128_t)
253: ac_cv_int_type_double_cell="int128_t"
254: ;;
255: esac
256: AC_MSG_RESULT($ac_cv_int_type_double_cell)
257: if test "$ac_cv_int_type_double_cell" = none; then
258: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
259: AC_LIBOBJ(dblsub)
260: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
261: else
262: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
263: fi
264:
265: AC_TYPE_OFF_T
266: AC_CHECK_SIZEOF(off_t)
267: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
268: ac_small_off_t=$?
269: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
270:
271: # Try if GCC understands -fno-cross-jump
272:
273: CFLAGS_1="$CFLAGS"
274: CFLAGS="$CFLAGS -fno-cross-jump"
275: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
276:
277: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
278: AC_SUBST(asm_fs)
279:
280: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
281: AC_SUBST(disasm_fs)
282:
283: case "$host_os" in
284: *win32)
285: EXE=".exe"
286: DIRSEP="\\"
287: ;;
288: *darwin*)
289: #Darwin uses some funny preprocessor by default; eliminate it:
290: AC_MSG_NOTICE([using -traditional-cpp on Darwin])
291: CFLAGS="$CFLAGS -traditional-cpp"
292: EXE=""
293: DIRSEP="/"
294: ;;
295: *)
296: EXE=""
297: DIRSEP="/"
298: ;;
299: esac
300: AC_SUBST(EXE)
301: AC_SUBST(DIRSEP)
302: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
303:
304: dnl Now a little support for DOS/DJGCC
305: AC_SUBST(GFORTH_EXE)
306: GFORTH_EXE=""
307: AC_SUBST(GFORTHFAST_EXE)
308: GFORTHFAST_EXE=""
309: AC_SUBST(GFORTHITC_EXE)
310: GFORTHITC_EXE=""
311: AC_SUBST(GFORTHDITC_EXE)
312: GFORTHDITC_EXE=""
313:
314: PATHSEP=":"
315: AC_SUBST(PATHSEP)
316: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
317:
318: AC_SUBST(FORTHSIZES)
319:
320: if test "$PEEPHOLE" = "yes"
321: then
322: PEEPHOLEFLAG="true"
323: AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
324: else
325: PEEPHOLEFLAG="false"
326: fi
327: AC_SUBST(PEEPHOLEFLAG)
328:
329: dnl copy commands for systems that don't have links
330: AC_SUBST(LINK_KERNL)
331: LINK_KERNL=""
332:
333: #if test $host_os=dos
334: #then
335: # echo Configuring for DOS!!!
336: # MAKE_EXE="coff2exe gforth"
337: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
338: #fi
339:
340: dnl the following macro produces a warning with autoconf-2.1
341: AC_C_BIGENDIAN
342: AC_SUBST(KERNEL)
343: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
344: if test $ac_cv_c_bigendian = yes; then
345: bytesex=b
346: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
347: else
348: bytesex=l
349: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
350: fi
351:
352: #check how to do asm(".skip 16")
353: AC_MSG_CHECKING([if and how we can waste code space])
354: skipcode=no
355: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
356: do
357: AC_TRY_RUN(
358: int foo(int);
359: main()
360: {
361: exit(foo(0)!=16);
362: }
363: int foo(int x)
364: {
365: if (x) {
366: label1:
367: asm("$i");
368: label2:
369: }
370: return (&&label2)-(&&label1);
371: }
372: ,skipcode=$i; break
373: ,,)
374: done
375: AC_MSG_RESULT($skipcode)
376: if test "$skipcode" = no
377: then
378: no_dynamic_default=1
379: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
380: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
381: else
382: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
383: fi
384:
385: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
386:
387: dnl Checks for programs.
388: AC_PROG_LN_S
389: AC_PROG_INSTALL
390:
391: dnl Checks for library functions
392: dnl This check is just for making later checks link with libm.
393: dnl using sin here is no good idea since it is built-into gcc and typechecked
394: AC_CHECK_LIB(m,asin)
395: AC_CHECK_LIB(dl,dlopen)
396: if test "$host_os" != "nextstep3"
397: then
398: AC_FUNC_MEMCMP
399: fi
400: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
401: AC_FUNC_FSEEKO
402: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
403: AC_CHECK_TYPES(stack_t)
404: AC_DECL_SYS_SIGLIST
405: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
406: AC_CHECK_FUNCS(expm1 log1p)
407: AC_REPLACE_FUNCS(rint ecvt)
408: dnl No check for select, because our replacement is no good under
409: dnl anything but DOS
410: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
411: AC_FUNC_FNMATCH
412: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
413: AC_CHECK_FUNCS(mmap sysconf getpagesize)
414: AM_PATH_LISPDIR
415:
416: kernel_fi=kernl${wordsize}${bytesex}.fi
417: AC_SUBST(kernel_fi)
418:
419: #this breaks bindists
420: #dnl replace srource directory by absolute value
421: #if test $srcdir = "."; then srcdir=`pwd`
422: #fi
423:
424: AC_SUBST(machine)
425: AC_CONFIG_FILES([
426: Makefile
427: Makedist
428: gforthmi
429: vmgen
430: machpc.fs
431: engine/Makefile
432: doc/version.texi ])
433: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
434: chmod +x gforthmi
435: chmod +x vmgen
436: test -d kernel||mkdir kernel]],[[]])
437: AC_OUTPUT
438:
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