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_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
58: AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
59: AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
60: AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
61: # turn on large file support with 64-bit off_t where available
62: AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
63: AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
64:
65: #currently we force direct threading this way. Eventually we should
66: #setup in the arch and engine files right
67:
68: CFLAGS=$CFLAGS
69:
70: AC_PROG_CC
71:
72: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
73:
74: AC_SUBST(CC)
75: AC_SUBST(DEBUGFLAG)
76:
77: AC_MSG_CHECKING(gcc version)
78: gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`
79: AC_MSG_RESULT($gcc_version)
80: if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null
81: then
82: no_dynamic_default=1
83: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
84: fi
85:
86: dnl the following macro produces a warning with autoconf-2.1
87: AC_CHECK_SIZEOF(char *)
88: case "$ac_cv_sizeof_char_p" in
89: 2)
90: wordsize=16
91: ;;
92: 4)
93: wordsize=32
94: ;;
95: 8)
96: wordsize=64
97: ;;
98: esac
99:
100: AC_CHECK_SIZEOF(char)
101: AC_CHECK_SIZEOF(short)
102: AC_CHECK_SIZEOF(int)
103: AC_CHECK_SIZEOF(long)
104: AC_CHECK_SIZEOF(long long)
105:
106: AC_MSG_CHECKING([for a C type for cells])
107: ac_cv_int_type_cell=none
108: case "$ac_cv_sizeof_char_p" in
109: $ac_cv_sizeof_int)
110: ac_cv_int_type_cell=int
111: ;;
112: $ac_cv_sizeof_short)
113: ac_cv_int_type_cell=short
114: ;;
115: $ac_cv_sizeof_char)
116: ac_cv_int_type_cell=char
117: ;;
118: $ac_cv_sizeof_long)
119: ac_cv_int_type_cell=long
120: ;;
121: $ac_cv_sizeof_long_long)
122: ac_cv_int_type_cell="long long"
123: ;;
124: esac
125: AC_MSG_RESULT($ac_cv_int_type_cell)
126: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
127:
128: AC_MSG_CHECKING([for a C type for double-cells])
129: ac_cv_int_type_double_cell=none
130: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
131: $ac_cv_sizeof_short)
132: ac_cv_int_type_double_cell=short
133: ;;
134: $ac_cv_sizeof_int)
135: ac_cv_int_type_double_cell=int
136: ;;
137: $ac_cv_sizeof_long)
138: ac_cv_int_type_double_cell=long
139: ;;
140: $ac_cv_sizeof_long_long)
141: ac_cv_int_type_double_cell="long long"
142: ;;
143: esac
144: AC_MSG_RESULT($ac_cv_int_type_double_cell)
145: if test "$ac_cv_int_type_double_cell" = none; then
146: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
147: AC_LIBOBJ(dblsub)
148: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
149: else
150: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
151: fi
152:
153: AC_TYPE_OFF_T
154: AC_CHECK_SIZEOF(off_t)
155: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
156: ac_small_off_t=$?
157: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
158:
159: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
160: OLDLDFLAGS=$LDFLAGS
161: LDFLAGS="$LDFLAGS -export-dynamic"
162: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
163: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
164: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
165: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
166: AC_MSG_RESULT($ac_export_dynamic)
167:
168: #terminology is a bit unusual here: The host is the system on which
169: #gforth will run; the system on which configure will run is the `build'
170: AC_CANONICAL_HOST
171: case "$host_cpu" in
172: hppa*)
173: machine=hppa
174: $srcdir/mkinstalldirs arch/hppa
175: AC_LIBOBJ(../arch/hppa/cache)
176: LDFLAGS="$LDFLAGS -Xlinker -N"
177: LIBS="$LIBS -L/lib/pa1.1/"
178: ;;
179: sparc*)
180: machine=sparc
181: ;;
182: i386)
183: machine=386
184: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
185: ;;
186: i486)
187: machine=386
188: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
189: ;;
190: i*86)
191: machine=386
192: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
193: CFLAGS_1="$CFLAGS"
194: CFLAGS="$CFLAGS -march=pentium"
195: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
196: ;;
197: ia64*)
198: machine=ia64
199: ;;
200: m68k)
201: machine=m68k
202: CFLAGS="$CFLAGS -fomit-frame-pointer"
203: if test "$host_os" = "nextstep3"
204: then
205: AC_LIBOBJ(termios)
206: fi
207: ;;
208: mips*)
209: machine=mips
210: #dynamic native code has the following problems on MIPS:
211: #
212: #1) J/JAL seems relocatable, but is are only
213: #relocatable within a 256MB-segment. While we try to
214: #get the linker to arrange this, there is no guarantee
215: #that this will succeed (and if the user uses a lot of
216: #memory, it is likely to fail).
217: #
218: #2) The way we generate dynamic native code may
219: #violate MIPS architectural restrictions (in
220: #particular, the delay slots of LW, MFLO, etc.)
221: #
222: #Therefore we disable dynamic native code by default:
223: no_dynamic_default=1
224: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
225: #link text and data segment into the same 256M region!
226: AC_MSG_CHECKING([whether the linker accepts -T])
227: OLDLDFLAGS=$LDFLAGS
228: LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
229: AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
230: test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
231: AC_MSG_RESULT($ac_link_mips_t)
232: AC_MSG_CHECKING([whether the linker accepts -D])
233: OLDLDFLAGS=$LDFLAGS
234: LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
235: AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
236: test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
237: AC_MSG_RESULT($ac_link_mips_d)
238: ;;
239: alpha*)
240: machine=alpha
241: #full IEEE FP support for more uniformity across platforms:
242: CFLAGS="$CFLAGS -mieee"
243: ;;
244: power*|rs6000)
245: machine=power
246: $srcdir/mkinstalldirs arch/power
247: AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
248: ;;
249: *)
250: AC_MSG_WARN([Using a generic machine description])
251: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
252: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
253: machine=generic
254: esac
255: AC_SUBST(host)
256: AC_SUBST(ENGINE_FLAGS)
257:
258: # Try if GCC understands -fno-cross-jump
259:
260: CFLAGS_1="$CFLAGS"
261: CFLAGS="$CFLAGS -fno-cross-jump"
262: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
263:
264: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
265: AC_SUBST(asm_fs)
266:
267: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
268: AC_SUBST(disasm_fs)
269:
270: case "$host_os" in
271: *win32)
272: EXE=".exe"
273: DIRSEP="\\"
274: ;;
275: *)
276: EXE=""
277: DIRSEP="/"
278: ;;
279: esac
280: AC_SUBST(EXE)
281: AC_SUBST(DIRSEP)
282: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
283:
284: dnl Now a little support for DOS/DJGCC
285: AC_SUBST(GFORTH_EXE)
286: GFORTH_EXE=""
287: AC_SUBST(GFORTHFAST_EXE)
288: GFORTHFAST_EXE=""
289: AC_SUBST(GFORTHITC_EXE)
290: GFORTHITC_EXE=""
291: AC_SUBST(GFORTHDITC_EXE)
292: GFORTHDITC_EXE=""
293:
294: PATHSEP=":"
295: AC_SUBST(PATHSEP)
296: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
297:
298: AC_SUBST(FORTHSIZES)
299:
300: if test "$PEEPHOLE" = "yes"
301: then
302: PEEPHOLEFLAG="true"
303: AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
304: else
305: PEEPHOLEFLAG="false"
306: fi
307: AC_SUBST(PEEPHOLEFLAG)
308:
309: dnl copy commands for systems that don't have links
310: AC_SUBST(LINK_KERNL)
311: LINK_KERNL=""
312:
313: #if test $host_os=dos
314: #then
315: # echo Configuring for DOS!!!
316: # MAKE_EXE="coff2exe gforth"
317: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
318: #fi
319:
320: dnl the following macro produces a warning with autoconf-2.1
321: AC_C_BIGENDIAN
322: AC_SUBST(KERNEL)
323: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
324: if test $ac_cv_c_bigendian = yes; then
325: bytesex=b
326: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
327: else
328: bytesex=l
329: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
330: fi
331:
332: #check how to do asm(".skip 16")
333: AC_MSG_CHECKING([if and how we can waste code space])
334: skipcode=no
335: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
336: do
337: AC_TRY_RUN(
338: int foo(int);
339: main()
340: {
341: exit(foo(0)!=16);
342: }
343: int foo(int x)
344: {
345: if (x) {
346: label1:
347: asm("$i");
348: label2:
349: }
350: return (&&label2)-(&&label1);
351: }
352: ,skipcode=$i; break
353: ,,)
354: done
355: AC_MSG_RESULT($skipcode)
356: if test "$skipcode" = no
357: then
358: no_dynamic_default=1
359: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
360: AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
361: else
362: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
363: fi
364:
365: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
366:
367: dnl Checks for programs.
368: AC_PROG_LN_S
369: AC_PROG_INSTALL
370:
371: dnl Checks for library functions
372: dnl This check is just for making later checks link with libm.
373: dnl using sin here is no good idea since it is built-into gcc and typechecked
374: AC_CHECK_LIB(m,asin)
375: AC_CHECK_LIB(dl,dlopen)
376: if test "$host_os" != "nextstep3"
377: then
378: AC_FUNC_MEMCMP
379: fi
380: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
381: AC_CHECK_FUNCS(dlopen sys_siglist getrusage fseeko ftello)
382: AC_DECL_SYS_SIGLIST
383: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
384: AC_CHECK_FUNCS(expm1 log1p)
385: AC_REPLACE_FUNCS(rint ecvt)
386: dnl No check for select, because our replacement is no good under
387: dnl anything but DOS
388: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
389: AC_FUNC_FNMATCH
390: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
391: AC_CHECK_FUNCS(mmap sysconf getpagesize)
392: AM_PATH_LISPDIR
393:
394: kernel_fi=kernl${wordsize}${bytesex}.fi
395: AC_SUBST(kernel_fi)
396:
397: #this breaks bindists
398: #dnl replace srource directory by absolute value
399: #if test $srcdir = "."; then srcdir=`pwd`
400: #fi
401:
402: AC_SUBST(machine)
403: AC_CONFIG_FILES([
404: Makefile
405: Makedist
406: gforthmi
407: vmgen
408: machpc.fs
409: engine/Makefile
410: doc/version.texi ])
411: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
412: chmod +x gforthmi
413: chmod +x vmgen
414: test -d kernel||mkdir kernel]],[[]])
415: AC_OUTPUT
416:
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