1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008 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 3
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, see http://www.gnu.org/licenses/.
19:
20:
21: dnl We use some automake macros here,
22: dnl but don't use automake for creating Makefile.in
23: AC_INIT([gforth],[0.6.9-20081026],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
24: AC_PREREQ(2.54)
25: #snapshots have numbers major.minor.release-YYYYMMDD
26: #note that lexicographic ordering must be heeded.
27: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
28: UPDATED="October 26, 2008"
29: AC_SUBST(UPDATED)
30: AC_CONFIG_HEADERS(engine/config.h)
31:
32: #remnants from having ltdl as convenience library
33: LTDLDEPS=""
34: LTDLINCL=""
35: LIBLTDL=""
36: LTDL_LDLIBS=""
37: AC_SUBST(LTDLDEPS)
38: AC_SUBST(LTDLINCL)
39: AC_SUBST(LIBLTDL)
40: AC_SUBST(LTDL_LDLIBS)
41:
42: #suppress the "-g -O2" default
43: test "$CFLAGS" || CFLAGS=-O2
44:
45: AC_ARG_ENABLE(force-cdiv,
46: AC_HELP_STRING([--enable-force-cdiv],
47: [ Use the native C division - symmetric - instead of
48: floored division (default disabled).]),
49: ,enable_force_cdiv=no)
50: test "$enable_force_cdiv" = "no"||
51: AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
52:
53: AC_SUBST(PROFEXES)
54: AC_SUBST(PROFOBJS)
55: AC_ARG_ENABLE(prof,
56: AC_HELP_STRING([--enable-prof],
57: [ Build gforth-prof, which outputs frequently occuring
58: sequences of primitives.]),
59: ,enable_prof=no)
60: if test "$enable_prof" != "no"; then
61: PROFEXES='gforth-prof$(OPT)$(EXE)'; PROFOBJS='engine-prof$(OPT).o main-prof$(OPT).o profile$(OPT).o'
62: fi
63:
64: AC_ARG_WITH(debug,
65: [ --with-debug specifies option -g to compile with debug info
66: --without-debug omits the -g switch and creates smaller images on
67: machines where "strip" has problems with gcc style
68: debugging informations.],
69: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
70:
71: GCC_LD="\$(GCC)"
72: EC_MODE="false"
73: EC=""
74: engine2='engine2$(OPT).o'
75: engine_fast2='engine-fast2$(OPT).o'
76: no_dynamic=""
77: image_i=""
78: signals_o="io.o signals.o"
79:
80: AC_ARG_WITH(ec,
81: AC_HELP_STRING([--with-ec=<arch>],
82: [ Build gforth for systems without OS.]),
83: [if test "$withval" = "no"; then
84: echo "defining hosted system"
85: else
86: echo "defining standalone system (${withval})"
87: AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
88: EC_MODE="true"
89: EC="-ec"
90: engine2=""
91: engine_fast2=""
92: no_dynamic="-DNO_DYNAMIC"
93: image_i="image.i"
94: if test "$withval" != "yes"; then
95: signals_o="io-${withval}.o"
96: else
97: signals_o="io.o"
98: fi
99: GCC_PATH=$(which $CC)
100: LIB_PATH=${GCC_PATH%/*/*}
101: GCC_LD="\$(LD)"
102: platform=${withval}
103: fi])
104:
105: #variables mentioned in INSTALL
106: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x).])
107: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
108: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
109: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
110: AC_ARG_VAR(GCC_PR15242_WORKAROUND, [Force the enabling (1) or disabling (0) of a workaround for a gcc-3.x performance bug (default unset: use workaround for gcc-3.x)])
111: AC_ARG_VAR(LIBCC_BUILD_SRC, [(Additional) libcc interface source files that should be processed on building and installation (default none)])
112:
113: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
114: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
115: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
116: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
117: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
118: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
119: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
120: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
121: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
122: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
123: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
124: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
125: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
126: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
127: AC_ARG_VAR(asmcomment, [assembler comment start string])
128: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
129: AC_ARG_VAR(LTDL_LIBRARY_PATH, [additional directories for libltdl (for some 64-bit platforms)])
130:
131: #set up feature test macros, so the tests get them right:
132: # turn on all POSIX, SUSv3, and GNU features if available
133: AC_GNU_SOURCE
134: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
135:
136: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
137: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
138: dnl but not for _XOPEN_SOURCE)
139: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
140: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
141: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
142: # turn on large file support with 64-bit off_t where available
143: AC_SYS_LARGEFILE
144: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
145: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
146:
147: #currently we force direct threading this way. Eventually we should
148: #setup in the arch and engine files right
149:
150: AC_PROG_CC
151:
152: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
153:
154: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
155: test x$condbranch_opt = x &&
156: if ($CC -v 2>&1 |grep 'gcc version 3' >/dev/null); then
157: condbranch_opt=0
158: else
159: condbranch_opt=1
160: fi
161: AC_MSG_RESULT($condbranch_opt)
162: AC_SUBST(condbranch_opt)
163:
164: AC_SUBST(CC)
165: AC_SUBST(GCC_LD)
166: AC_SUBST(DEBUGFLAG)
167: AC_SUBST(EC)
168: AC_SUBST(EC_MODE)
169: AC_SUBST(engine2)
170: AC_SUBST(engine_fast2)
171: AC_SUBST(no_dynamic)
172: AC_SUBST(image_i)
173: AC_SUBST(signals_o)
174:
175: #this is used to disable some (not generally essential) part of the
176: #Makefile that some makes don't grok. It would be better to test for
177: #this specific Makefile feature than the make version.
178: AC_MSG_CHECKING(make type)
179: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
180: GNUMAKE='#'
181: test "$make_type" = "GNU Make" && GNUMAKE=''
182: AC_MSG_RESULT($make_type)
183: AC_SUBST(GNUMAKE)
184:
185: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
186: OLDLDFLAGS=$LDFLAGS
187: LDFLAGS="$LDFLAGS -export-dynamic"
188: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
189: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
190: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
191: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
192: AC_MSG_RESULT($ac_export_dynamic)
193:
194: #terminology is a bit unusual here: The host is the system on which
195: #gforth will run; the system on which configure will run is the `build'
196: AC_CANONICAL_HOST
197: case "$host_cpu" in
198: arm*)
199: machine=arm
200: $srcdir/mkinstalldirs arch/arm
201: CFLAGS="$CFLAGS -fomit-frame-pointer"
202: if test x$platform = xnxt; then
203: CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
204: fi
205: if test -z $arm_cacheflush; then
206: case "$host_os" in
207: *linux*)
208: AC_LIBOBJ(../arch/arm/cacheflush-linux)
209: ;;
210: *)
211: no_dynamic_default=1
212: AC_LIBOBJ(../arch/arm/cacheflush0)
213: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
214: ;;
215: esac
216: else
217: AC_LIBOBJ(../$arm_cacheflush)
218: test $srcdir = . || AC_MSG_WARN([setting arm_cacheflush requires building in the source directory])
219: fi
220: #longer skipcodes lead to problems on ARM, and it uses
221: #only 4-byte alignment anyway
222: test "$skipcode" || skipcode="nop"
223: ;;
224: hppa*)
225: machine=hppa
226: $srcdir/mkinstalldirs arch/hppa
227: AC_LIBOBJ(../arch/hppa/cache)
228: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
229: LDFLAGS="$LDFLAGS -Xlinker -N"
230: LIBS="$LIBS -L/lib/pa1.1/"
231: ;;
232: sparc*)
233: machine=sparc
234: ;;
235: i386)
236: machine=386
237: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
238: ;;
239: i486)
240: machine=386
241: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
242: ;;
243: i*86)
244: machine=386
245: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
246: CFLAGS_1="$CFLAGS"
247: CFLAGS="$CFLAGS -march=pentium"
248: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
249: ;;
250: x86_64)
251: case $CC
252: in
253: *-m32*)
254: machine=386
255: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
256: CFLAGS_1="$CFLAGS"
257: CFLAGS="$CFLAGS -march=athlon64"
258: ;;
259: *)
260: machine=amd64
261: ;;
262: esac
263: ;;
264: ia64*)
265: machine=ia64
266: AC_LIBOBJ(../arch/ia64/flush_icache_block)
267: test "$skipcode" || skipcode="nop.i 0"
268: #".skip 16" passes the test below,
269: # but gives an assembler error in engine
270: ;;
271: m68k)
272: machine=m68k
273: CFLAGS="$CFLAGS -fomit-frame-pointer"
274: if test "$host_os" = "nextstep3"
275: then
276: AC_LIBOBJ(termios)
277: fi
278: ;;
279: mips*)
280: machine=mips
281: #dynamic native code has the following problems on MIPS:
282: #
283: #1) J/JAL seems relocatable, but is are only
284: #relocatable within a 256MB-segment. While we try to
285: #get the linker to arrange this, there is no guarantee
286: #that this will succeed (and if the user uses a lot of
287: #memory, it is likely to fail).
288: #
289: #2) The way we generate dynamic native code may
290: #violate MIPS architectural restrictions (in
291: #particular, the delay slots of LW, MFLO, etc.)
292: #
293: #Therefore we disable dynamic native code by default:
294: if test -z "$no_dynamic_default"; then
295: no_dynamic_default=1
296: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
297: fi
298: ;;
299: alpha*)
300: machine=alpha
301: #full IEEE FP support for more uniformity across platforms:
302: CFLAGS="$CFLAGS -mieee"
303: ;;
304: power*|rs6000)
305: machine=power
306: $srcdir/mkinstalldirs arch/power
307: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
308: #long long is broken on (at least) gcc-2.95.* for PPC
309: test x$ac_cv_sizeof_long_long = x &&
310: ($CC -v 2>&1 |grep 'gcc version 2.95' >/dev/null) &&
311: ac_cv_sizeof_long_long=0
312: #The only architecture with enough callee-saved registers
313: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
314: #or use 2, hardly slower at run-time and starts up faster
315: ;;
316: *)
317: AC_MSG_WARN([Using a generic machine description])
318: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
319: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
320: machine=generic
321: #I-cache flushing would be needed for dynamic code generation
322: if test -z $no_dynamic_default; then
323: no_dynamic_default=1
324: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
325: fi
326: esac
327: AC_SUBST(host)
328:
329: MAKEINC=""
330:
331: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
332: if test x$EC_MODE = xtrue
333: then
334: echo "Check for arch/$machine/$platform/gforth.ld"
335: if test -f arch/$machine/$platform/gforth.ld
336: then
337: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
338: if test x$platform = xnxt; then
339: LIBS="$LIB_PATH/lib/gcc/arm-elf/$($CC --version | grep GCC | cut -d' ' -f3)/interwork/libgcc.a $LIB_PATH/arm-elf/lib/interwork/libc.a $LIBS"
340: fi
341: fi
342: if test -f arch/$machine/$platform/make.inc
343: then
344: MAKEINC="include ../arch/$machine/$platform/make.inc"
345: fi
346: fi
347: AC_SUBST(MAKEINC)
348:
349: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
350:
351: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
352: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
353: [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
354: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
355: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
356: [number of registers in the default stack cache state for gforth-fast and gforth-native])
357:
358: test x$GCC_PR15242_WORKAROUND = x ||
359: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
360: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
361:
362: dnl the following macro produces a warning with autoconf-2.1
363: AC_CHECK_SIZEOF(char *)
364: case "$ac_cv_sizeof_char_p" in
365: 2)
366: wordsize=16
367: ;;
368: 4)
369: wordsize=32
370: ;;
371: 8)
372: wordsize=64
373: ;;
374: esac
375:
376: AC_CHECK_SIZEOF(void *)
377: case "$ac_cv_sizeof_void_p" in
378: 2)
379: vwordsize=16
380: ;;
381: 4)
382: vwordsize=32
383: ;;
384: 8)
385: vwordsize=64
386: ;;
387: esac
388:
389: AC_CHECK_SIZEOF(char)
390: AC_CHECK_SIZEOF(short)
391: AC_CHECK_SIZEOF(int)
392: AC_CHECK_SIZEOF(long)
393: AC_CHECK_SIZEOF(long long)
394: AC_CHECK_SIZEOF(intptr_t)
395: AC_CHECK_SIZEOF(int128_t)
396: AC_CHECK_SIZEOF(uint128_t)
397:
398: AC_MSG_CHECKING([for a C type for cells])
399: ac_cv_int_type_cell=none
400: case "$ac_cv_sizeof_char_p" in
401: $ac_cv_sizeof_int)
402: ac_cv_int_type_cell=int
403: ;;
404: $ac_cv_sizeof_short)
405: ac_cv_int_type_cell=short
406: ;;
407: $ac_cv_sizeof_char)
408: ac_cv_int_type_cell=char
409: ;;
410: $ac_cv_sizeof_long)
411: ac_cv_int_type_cell=long
412: ;;
413: $ac_cv_sizeof_long_long)
414: ac_cv_int_type_cell="long long"
415: ;;
416: $ac_cv_sizeof_intptr_t)
417: ac_cv_int_type_cell="intptr_t"
418: ;;
419: esac
420: AC_MSG_RESULT($ac_cv_int_type_cell)
421: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
422:
423: AC_MSG_CHECKING([for a C type for wydes])
424: ac_cv_wyde_type_cell=none
425: case 2 in
426: $ac_cv_sizeof_int)
427: ac_cv_wyde_type_cell=int
428: ;;
429: $ac_cv_sizeof_short)
430: ac_cv_wyde_type_cell=short
431: ;;
432: $ac_cv_sizeof_char)
433: ac_cv_wyde_type_cell=char
434: ;;
435: $ac_cv_sizeof_long)
436: ac_cv_wyde_type_cell=long
437: ;;
438: $ac_cv_sizeof_long_long)
439: ac_cv_wyde_type_cell="long long"
440: ;;
441: $ac_cv_sizeof_intptr_t)
442: ac_cv_wyde_type_cell="intptr_t"
443: ;;
444: esac
445: AC_MSG_RESULT($ac_cv_wyde_type_cell)
446: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
447:
448: AC_MSG_CHECKING([for a C type for tetrabytes])
449: ac_cv_tetrabyte_type_cell=none
450: case 4 in
451: $ac_cv_sizeof_int)
452: ac_cv_tetrabyte_type_cell=int
453: ;;
454: $ac_cv_sizeof_short)
455: ac_cv_tetrabyte_type_cell=short
456: ;;
457: $ac_cv_sizeof_char)
458: ac_cv_tetrabyte_type_cell=char
459: ;;
460: $ac_cv_sizeof_long)
461: ac_cv_tetrabyte_type_cell=long
462: ;;
463: $ac_cv_sizeof_long_long)
464: ac_cv_tetrabyte_type_cell="long long"
465: ;;
466: $ac_cv_sizeof_intptr_t)
467: ac_cv_tetrabyte_type_cell="intptr_t"
468: ;;
469: esac
470: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
471: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
472:
473: AC_MSG_CHECKING([for a C type for double-cells])
474: ac_cv_int_type_double_cell=none
475: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
476: $ac_cv_sizeof_short)
477: ac_cv_int_type_double_cell=short
478: ;;
479: $ac_cv_sizeof_int)
480: ac_cv_int_type_double_cell=int
481: ;;
482: $ac_cv_sizeof_long)
483: ac_cv_int_type_double_cell=long
484: ;;
485: $ac_cv_sizeof_long_long)
486: ac_cv_int_type_double_cell="long long"
487: ;;
488: $ac_cv_sizeof_intptr_t)
489: ac_cv_int_type_double_cell="intptr_t"
490: ;;
491: $ac_cv_sizeof_int128_t)
492: ac_cv_int_type_double_cell="int128_t"
493: ;;
494: esac
495: AC_MSG_RESULT($ac_cv_int_type_double_cell)
496:
497: AC_MSG_CHECKING([for a C type for unsigned double-cells])
498: ac_cv_int_type_double_ucell=none
499: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
500: $ac_cv_sizeof_short)
501: ac_cv_int_type_double_ucell="unsigned short"
502: ;;
503: $ac_cv_sizeof_int)
504: ac_cv_int_type_double_ucell="unsigned int"
505: ;;
506: $ac_cv_sizeof_long)
507: ac_cv_int_type_double_ucell="unsigned long"
508: ;;
509: $ac_cv_sizeof_long_long)
510: ac_cv_int_type_double_ucell="unsigned long long"
511: ;;
512: $ac_cv_sizeof_intptr_t)
513: ac_cv_int_type_double_ucell="unsigned intptr_t"
514: ;;
515: $ac_cv_sizeof_uint128_t)
516: ac_cv_int_type_double_ucell="uint128_t"
517: ;;
518: esac
519: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
520:
521: if test "$ac_cv_int_type_double_cell" != none && \
522: test "$ac_cv_int_type_double_ucell" != none
523: then
524: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
525: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
526: OPTS=-ll
527: else
528: if test "$ac_cv_sizeof_char_p" = 8; then
529: OPTS="-ll -noll"
530: else
531: OPTS=-noll
532: fi
533: fi
534:
535: if grep FORCE_REG $srcdir/arch/$machine/machine.h >/dev/null; then
536: OPTS2=''
537: for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
538: OPTS="$OPTS2 $OPTS"
539: else
540: AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
541: fi
542: AC_SUBST(OPTS)
543:
544: AC_TYPE_OFF_T
545: AC_CHECK_SIZEOF(off_t)
546: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
547: ac_small_off_t=$?
548: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
549:
550: ENGINE_FLAGS=
551: AC_SUBST(ENGINE_FLAGS)
552:
553: # Try if GCC understands -fno-gcse
554:
555: AC_MSG_CHECKING([if $CC understands -fno-gcse])
556: CFLAGS_1="$CFLAGS"
557: CFLAGS="$CFLAGS -fno-gcse"
558: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
559: CFLAGS="$CFLAGS_1"
560: AC_MSG_RESULT($ac_nogcse)
561:
562: # Try if GCC understands -fno-strict-aliasing
563: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
564: CFLAGS_1="$CFLAGS"
565: CFLAGS="$CFLAGS -fno-strict-aliasing"
566: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
567: CFLAGS="$CFLAGS_1"
568: AC_MSG_RESULT($ac_nostrictaliasing)
569:
570: # Try if GCC understands -fno-crossjumping
571: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
572: CFLAGS_1="$CFLAGS"
573: CFLAGS="$CFLAGS -fno-crossjumping"
574: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
575: CFLAGS="$CFLAGS_1"
576: AC_MSG_RESULT($ac_nocrossjumping)
577:
578: # Try if GCC understands -fno-reorder-blocks
579: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
580: CFLAGS_1="$CFLAGS"
581: CFLAGS="$CFLAGS -fno-reorder-blocks"
582: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
583: CFLAGS="$CFLAGS_1"
584: AC_MSG_RESULT($ac_noreorder_blocks)
585:
586: # Try if GCC understands -falign-labels=1
587: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
588: CFLAGS_1="$CFLAGS"
589: CFLAGS="$CFLAGS -falign-labels=1"
590: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
591: CFLAGS="$CFLAGS_1"
592: AC_MSG_RESULT($ac_align_labels)
593:
594: # Try if GCC understands -falign-loops=1
595: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
596: CFLAGS_1="$CFLAGS"
597: CFLAGS="$CFLAGS -falign-loops=1"
598: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
599: CFLAGS="$CFLAGS_1"
600: AC_MSG_RESULT($ac_align_loops)
601:
602: # Try if GCC understands -falign-jumps=1
603: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
604: CFLAGS_1="$CFLAGS"
605: CFLAGS="$CFLAGS -falign-jumps=1"
606: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
607: CFLAGS="$CFLAGS_1"
608: AC_MSG_RESULT($ac_align_jumps)
609:
610: # Try if GCC understands __attribute__((unused))
611: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
612: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
613: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
614: AC_MSG_RESULT($MAYBE_UNUSED)
615:
616: #try if m4 understands -s
617: AC_MSG_CHECKING([how to invoke m4])
618: if m4 -s /dev/null >/dev/null 2>&1; then
619: M4="m4 -s"
620: else
621: M4=m4
622: fi
623: AC_SUBST(M4)
624: AC_MSG_RESULT($M4)
625:
626: # Find installed Gforth
627: AC_MSG_CHECKING([for gforth])
628: GFORTH="`cd / && which gforth 2>/dev/null`"
629: #the "$srcdir" = "." test defends agains the "../" bug in gforth-0.6.2
630: (cd / && $GFORTH -e bye >/dev/null 2>/dev/null && test "$srcdir" = ".") || GFORTH=""
631: if test -z "$GFORTH"; then
632: PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
633: kernel_anti_dependence=''
634: else
635: PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
636: kernel_anti_dependence='$(kernel_fi)'
637: fi
638: AC_SUBST(PREFORTH)
639: AC_SUBST(kernel_anti_dependence)
640: AC_MSG_RESULT($PREFORTH)
641:
642: #echo "machine='$machine'"
643:
644: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
645: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
646: AC_SUBST(asm_fs)
647:
648: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
649: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
650: AC_SUBST(disasm_fs)
651:
652: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
653:
654: case "$host_os" in
655: *win32*)
656: # !!!FIXME!!! problems with cygwin and ';' as path separator
657: DIRSEP="\\\\"
658: PATHSEP=";"
659: #we want the builtins of command.com/cmd.exe and its
660: # handling of .com files.
661: #$COMSPEC contains the name of the Windows shell;
662: # the ./ is there, because the bash does not recognize
663: # absolute DOS filenames
664: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
665: ;;
666: *darwin*)
667: #Darwin uses some funny preprocessor by default; eliminate it:
668: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
669: CFLAGS="$CFLAGS -no-cpp-precomp"
670: DIRSEP="/"
671: PATHSEP=":"
672: DEFAULTSYSTEMPREFIX=""
673: #the following magic value was suggested by
674: #http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
675: AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
676: ;;
677: *linux*)
678: DIRSEP="/"
679: PATHSEP=":"
680: DEFAULTSYSTEMPREFIX=""
681: if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
682: LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '\n' : | sed -e 's/:$//'`
683: fi
684: ;;
685: *)
686: DIRSEP="/"
687: PATHSEP=":"
688: DEFAULTSYSTEMPREFIX=""
689: ;;
690: esac
691: AC_SUBST(DIRSEP)
692: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
693: AC_SUBST(PATHSEP)
694: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
695: AC_SUBST(DEFAULTSYSTEMPREFIX)
696: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
697: if test -n "$LTDL_LIBRARY_PATH"; then
698: AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
699: fi
700:
701: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
702: #This magic incantation seems to be completely undocumented.
703: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
704:
705: dnl Now a little support for DOS/DJGCC
706: AC_SUBST(GFORTH_EXE)
707: GFORTH_EXE="true"
708: AC_SUBST(GFORTHFAST_EXE)
709: GFORTHFAST_EXE="true"
710: AC_SUBST(GFORTHITC_EXE)
711: GFORTHITC_EXE="true"
712: AC_SUBST(GFORTHDITC_EXE)
713: GFORTHDITC_EXE="true"
714:
715: AC_SUBST(FORTHSIZES)
716:
717: dnl if test "$PEEPHOLE" = "yes"
718: dnl then
719: dnl PEEPHOLEFLAG="true"
720: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
721: dnl else
722: dnl PEEPHOLEFLAG="false"
723: dnl fi
724: PEEPHOLEFLAG="true"
725: AC_SUBST(PEEPHOLEFLAG)
726:
727: dnl copy commands for systems that don't have links
728: AC_SUBST(LINK_KERNL)
729: LINK_KERNL=""
730:
731: #if test $host_os=dos
732: #then
733: # echo Configuring for DOS!!!
734: # MAKE_EXE="coff2exe gforth"
735: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
736: #fi
737:
738: dnl the following macro produces a warning with autoconf-2.1
739: AC_C_BIGENDIAN
740: AC_SUBST(KERNEL)
741: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
742: if test $ac_cv_c_bigendian != no; then
743: bytesex=b
744: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
745: else
746: bytesex=l
747: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
748: fi
749:
750: #check how to do asm(".skip 16")
751: #echo "CFLAGS=$CFLAGS"
752: #echo "ac_link=$ac_link"
753: AC_MSG_CHECKING([if and how we can waste code space])
754: if test -z "$skipcode"; then
755: skipcode=no
756: CFLAGS_1="$CFLAGS"
757: CFLAGS="$CFLAGS $ENGINE_FLAGS"
758: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
759: do
760: AC_TRY_RUN(
761: [int foo(int,int,int);
762: main()
763: {
764: exit(foo(0,0,0)!=16);
765: }
766: int foo(int x, int y, int z)
767: {
768: static void *labels[]={&&label1, &&label2};
769: if (x) {
770: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
771: label1:
772: asm("$i"); /* or ".space 16" or somesuch */
773: label2: ;
774: }
775: {
776: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
777: return labels[1]-labels[0];
778: }
779: }]
780: ,skipcode=$i; break
781: ,,)
782: done
783: CFLAGS=$CFLAGS_1
784: fi
785: AC_MSG_RESULT($skipcode)
786: if test "$skipcode" = no
787: then
788: if test -z $no_dynamic_default; then
789: no_dynamic_default=1
790: AC_MSG_WARN(Disabling default dynamic native code generation)
791: fi
792: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
793: else
794: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
795: fi
796:
797: AC_MSG_CHECKING([if and how we can do comments in asm statements])
798: #the point here is to get asm statements that look different to
799: #gcc's "optimizer"
800: if test -z "$asmcomment"; then
801: asmcomment=no
802: CFLAGS_1="$CFLAGS"
803: CFLAGS="$CFLAGS $ENGINE_FLAGS"
804: for i in '"# "' '"! "' '"; "'; do
805: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
806: done
807: CFLAGS=$CFLAGS_1
808: fi
809: AC_MSG_RESULT($asmcomment)
810: if test "$asmcomment" != no
811: then
812: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
813: fi
814:
815: test "$no_dynamic_default" || no_dynamic_default=0
816: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
817:
818: dnl Checks for programs.
819: AC_PROG_LN_S
820: AC_PROG_INSTALL
821: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
822:
823: dnl MacOS X has a libtool that does something else
824: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
825:
826: if test -n "$GNU_LIBTOOL"; then
827: build_libcc_named=build-libcc-named
828: else
829: build_libcc_named=""
830: fi
831: AC_SUBST(build_libcc_named)
832:
833:
834: dnl Checks for library functions
835: dnl This check is just for making later checks link with libm.
836: dnl using sin here is no good idea since it is built-into gcc and typechecked
837: AC_CHECK_LIB(m,asin)
838: AC_CHECK_LIB(ltdl,lt_dlinit)
839: #check for libffi 2.x
840: AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
841: if test -z "$FFI_H_NAME"; then
842: AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
843: fi
844: AC_SUBST(FFI_H_NAME)
845: AC_CHECK_LIB(ffi,ffi_call)
846: if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
847: then
848: LIBFFIFLAG="true"
849: LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
850: else
851: LIBFFIFLAG="false"
852: fi
853: #check for ffcall libraries
854: #unfortunately, these four calls are separated out into a library each.
855: AC_CHECK_LIB(avcall,__builtin_avcall)
856: dnl AC_CHECK_LIB(callback,__vacall_r)
857: dnl AC_CHECK_LIB(vacall,vacall)
858: dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
859: if test $ac_cv_lib_avcall___builtin_avcall = yes; then
860: FFCALLFLAG="true"
861: LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
862: else
863: FFCALLFLAG="false"
864: fi
865: if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
866: AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
867: fi
868: AC_SUBST(LIBFFIFLAG)
869: AC_SUBST(FFCALLFLAG)
870: AC_SUBST(LIBCC_BUILD_SRC)
871: if test "$host_os" != "nextstep3"
872: then
873: AC_FUNC_MEMCMP
874: fi
875: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
876: AC_FUNC_FSEEKO
877: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
878: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
879: AC_DECL_SYS_SIGLIST
880: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
881: AC_CHECK_FUNCS(expm1 log1p)
882: AC_REPLACE_FUNCS(rint ecvt)
883: dnl No check for select, because our replacement is no good under
884: dnl anything but DOS
885: AC_CHECK_HEADERS(sys/mman.h fnmatch.h alloca.h wchar.h)
886: AC_FUNC_FNMATCH
887: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
888: AC_CHECK_FUNCS(mmap sysconf getpagesize wcwidth)
889: AM_PATH_LISPDIR
890:
891: kernel_fi=kernl${vwordsize}${bytesex}.fi
892: include_fi=kernl${wordsize}${bytesex}${EC}.fi
893: AC_SUBST(kernel_fi)
894: AC_SUBST(include_fi)
895:
896: #this breaks bindists
897: #dnl replace srource directory by absolute value
898: #if test $srcdir = "."; then srcdir=`pwd`
899: #fi
900:
901: AC_SUBST(machine)
902: AC_CONFIG_FILES([
903: Makefile
904: Makedist
905: gforthmi
906: vmgen
907: machpc.fs
908: envos.fs
909: preforth
910: engine/Makefile
911: engine/libcc.h
912: doc/version.texi
913: build-ec ])
914: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
915: chmod +x gforthmi
916: chmod +x vmgen
917: chmod +x build-ec
918: chmod +x preforth
919: test -d kernel||mkdir kernel
920: if test $srcdir != "."; then ln -sf $srcdir/gforth.el .; fi
921: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
922: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
923: AC_OUTPUT
924:
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