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