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: CFLAGS="$CFLAGS -fomit-frame-pointer"
201: if test x$platform = xnxt; then
202: CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
203: fi
204: if test -z $arm_cacheflush; then
205: case "$host_os" in
206: *linux*)
207: AC_LIBOBJ(../arch/arm/cacheflush-linux)
208: ;;
209: *)
210: no_dynamic_default=1
211: AC_LIBOBJ(../arch/arm/cacheflush0)
212: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
213: ;;
214: esac
215: else
216: AC_LIBOBJ(../$arm_cacheflush)
217: test $srcdir = . || AC_MSG_WARN([setting arm_cacheflush requires building in the source directory])
218: fi
219: #longer skipcodes lead to problems on ARM, and it uses
220: #only 4-byte alignment anyway
221: test "$skipcode" || skipcode="nop"
222: ;;
223: hppa*)
224: machine=hppa
225: AC_LIBOBJ(../arch/hppa/cache)
226: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
227: LDFLAGS="$LDFLAGS -Xlinker -N"
228: LIBS="$LIBS -L/lib/pa1.1/"
229: ;;
230: sparc*)
231: machine=sparc
232: ;;
233: i386)
234: machine=386
235: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
236: ;;
237: i486)
238: machine=386
239: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
240: ;;
241: i*86)
242: machine=386
243: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
244: CFLAGS_1="$CFLAGS"
245: CFLAGS="$CFLAGS -march=pentium"
246: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
247: ;;
248: x86_64)
249: case $CC
250: in
251: *-m32*)
252: machine=386
253: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
254: CFLAGS_1="$CFLAGS"
255: CFLAGS="$CFLAGS -march=athlon64"
256: ;;
257: *)
258: machine=amd64
259: ;;
260: esac
261: ;;
262: ia64*)
263: machine=ia64
264: AC_LIBOBJ(../arch/ia64/flush_icache_block)
265: test "$skipcode" || skipcode="nop.i 0"
266: #".skip 16" passes the test below,
267: # but gives an assembler error in engine
268: ;;
269: m68k)
270: machine=m68k
271: CFLAGS="$CFLAGS -fomit-frame-pointer"
272: if test "$host_os" = "nextstep3"
273: then
274: AC_LIBOBJ(termios)
275: fi
276: ;;
277: mips*)
278: machine=mips
279: #dynamic native code has the following problems on MIPS:
280: #
281: #1) J/JAL seems relocatable, but is are only
282: #relocatable within a 256MB-segment. While we try to
283: #get the linker to arrange this, there is no guarantee
284: #that this will succeed (and if the user uses a lot of
285: #memory, it is likely to fail).
286: #
287: #2) The way we generate dynamic native code may
288: #violate MIPS architectural restrictions (in
289: #particular, the delay slots of LW, MFLO, etc.)
290: #
291: #Therefore we disable dynamic native code by default:
292: if test -z "$no_dynamic_default"; then
293: no_dynamic_default=1
294: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
295: fi
296: ;;
297: alpha*)
298: machine=alpha
299: #full IEEE FP support for more uniformity across platforms:
300: CFLAGS="$CFLAGS -mieee"
301: ;;
302: power*|rs6000)
303: machine=power
304: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
305: #long long is broken on (at least) gcc-2.95.* for PPC
306: test x$ac_cv_sizeof_long_long = x &&
307: ($CC -v 2>&1 |grep 'gcc version 2.95' >/dev/null) &&
308: ac_cv_sizeof_long_long=0
309: #The only architecture with enough callee-saved registers
310: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
311: #or use 2, hardly slower at run-time and starts up faster
312:
313: #the skipcode that is normally selected below does not
314: #work with gcc-3.[34]
315: test "$skipcode" || skipcode="nop\nnop\nnop\nnop"
316: ;;
317: *)
318: AC_MSG_WARN([Using a generic machine description])
319: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
320: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
321: machine=generic
322: #I-cache flushing would be needed for dynamic code generation
323: if test -z $no_dynamic_default; then
324: no_dynamic_default=1
325: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
326: fi
327: esac
328: AC_SUBST(host)
329:
330: MAKEINC=""
331:
332: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
333: if test x$EC_MODE = xtrue
334: then
335: echo "Check for arch/$machine/$platform/gforth.ld"
336: if test -f arch/$machine/$platform/gforth.ld
337: then
338: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
339: if test x$platform = xnxt; then
340: 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 $LIBS"
341: fi
342: fi
343: if test -f arch/$machine/$platform/make.inc
344: then
345: MAKEINC="include ../arch/$machine/$platform/make.inc"
346: fi
347: fi
348: AC_SUBST(MAKEINC)
349:
350: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
351:
352: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
353: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
354: [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
355: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
356: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
357: [number of registers in the default stack cache state for gforth-fast and gforth-native])
358:
359: test x$GCC_PR15242_WORKAROUND = x ||
360: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
361: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
362:
363: dnl the following macro produces a warning with autoconf-2.1
364: AC_CHECK_SIZEOF(char *)
365: case "$ac_cv_sizeof_char_p" in
366: 2)
367: wordsize=16
368: ;;
369: 4)
370: wordsize=32
371: ;;
372: 8)
373: wordsize=64
374: ;;
375: esac
376:
377: AC_CHECK_SIZEOF(void *)
378: case "$ac_cv_sizeof_void_p" in
379: 2)
380: vwordsize=16
381: ;;
382: 4)
383: vwordsize=32
384: ;;
385: 8)
386: vwordsize=64
387: ;;
388: esac
389:
390: AC_CHECK_SIZEOF(char)
391: AC_CHECK_SIZEOF(short)
392: AC_CHECK_SIZEOF(int)
393: AC_CHECK_SIZEOF(long)
394: AC_CHECK_SIZEOF(long long)
395: AC_CHECK_SIZEOF(intptr_t)
396: AC_CHECK_SIZEOF(int128_t)
397: AC_CHECK_SIZEOF(uint128_t)
398:
399: AC_MSG_CHECKING([for a C type for cells])
400: ac_cv_int_type_cell=none
401: case "$ac_cv_sizeof_char_p" in
402: $ac_cv_sizeof_int)
403: ac_cv_int_type_cell=int
404: ;;
405: $ac_cv_sizeof_short)
406: ac_cv_int_type_cell=short
407: ;;
408: $ac_cv_sizeof_char)
409: ac_cv_int_type_cell=char
410: ;;
411: $ac_cv_sizeof_long)
412: ac_cv_int_type_cell=long
413: ;;
414: $ac_cv_sizeof_long_long)
415: ac_cv_int_type_cell="long long"
416: ;;
417: $ac_cv_sizeof_intptr_t)
418: ac_cv_int_type_cell="intptr_t"
419: ;;
420: esac
421: AC_MSG_RESULT($ac_cv_int_type_cell)
422: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
423:
424: AC_MSG_CHECKING([for a C type for wydes])
425: ac_cv_wyde_type_cell=none
426: case 2 in
427: $ac_cv_sizeof_int)
428: ac_cv_wyde_type_cell=int
429: ;;
430: $ac_cv_sizeof_short)
431: ac_cv_wyde_type_cell=short
432: ;;
433: $ac_cv_sizeof_char)
434: ac_cv_wyde_type_cell=char
435: ;;
436: $ac_cv_sizeof_long)
437: ac_cv_wyde_type_cell=long
438: ;;
439: $ac_cv_sizeof_long_long)
440: ac_cv_wyde_type_cell="long long"
441: ;;
442: $ac_cv_sizeof_intptr_t)
443: ac_cv_wyde_type_cell="intptr_t"
444: ;;
445: esac
446: AC_MSG_RESULT($ac_cv_wyde_type_cell)
447: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
448:
449: AC_MSG_CHECKING([for a C type for tetrabytes])
450: ac_cv_tetrabyte_type_cell=none
451: case 4 in
452: $ac_cv_sizeof_int)
453: ac_cv_tetrabyte_type_cell=int
454: ;;
455: $ac_cv_sizeof_short)
456: ac_cv_tetrabyte_type_cell=short
457: ;;
458: $ac_cv_sizeof_char)
459: ac_cv_tetrabyte_type_cell=char
460: ;;
461: $ac_cv_sizeof_long)
462: ac_cv_tetrabyte_type_cell=long
463: ;;
464: $ac_cv_sizeof_long_long)
465: ac_cv_tetrabyte_type_cell="long long"
466: ;;
467: $ac_cv_sizeof_intptr_t)
468: ac_cv_tetrabyte_type_cell="intptr_t"
469: ;;
470: esac
471: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
472: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
473:
474: AC_MSG_CHECKING([for a C type for double-cells])
475: ac_cv_int_type_double_cell=none
476: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
477: $ac_cv_sizeof_short)
478: ac_cv_int_type_double_cell=short
479: ;;
480: $ac_cv_sizeof_int)
481: ac_cv_int_type_double_cell=int
482: ;;
483: $ac_cv_sizeof_long)
484: ac_cv_int_type_double_cell=long
485: ;;
486: $ac_cv_sizeof_long_long)
487: ac_cv_int_type_double_cell="long long"
488: ;;
489: $ac_cv_sizeof_intptr_t)
490: ac_cv_int_type_double_cell="intptr_t"
491: ;;
492: $ac_cv_sizeof_int128_t)
493: ac_cv_int_type_double_cell="int128_t"
494: ;;
495: esac
496: AC_MSG_RESULT($ac_cv_int_type_double_cell)
497:
498: AC_MSG_CHECKING([for a C type for unsigned double-cells])
499: ac_cv_int_type_double_ucell=none
500: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
501: $ac_cv_sizeof_short)
502: ac_cv_int_type_double_ucell="unsigned short"
503: ;;
504: $ac_cv_sizeof_int)
505: ac_cv_int_type_double_ucell="unsigned int"
506: ;;
507: $ac_cv_sizeof_long)
508: ac_cv_int_type_double_ucell="unsigned long"
509: ;;
510: $ac_cv_sizeof_long_long)
511: ac_cv_int_type_double_ucell="unsigned long long"
512: ;;
513: $ac_cv_sizeof_intptr_t)
514: ac_cv_int_type_double_ucell="unsigned intptr_t"
515: ;;
516: $ac_cv_sizeof_uint128_t)
517: ac_cv_int_type_double_ucell="uint128_t"
518: ;;
519: esac
520: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
521:
522: if test "$ac_cv_int_type_double_cell" != none && \
523: test "$ac_cv_int_type_double_ucell" != none
524: then
525: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
526: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
527: OPTS=-ll
528: else
529: if test "$ac_cv_sizeof_char_p" = 8; then
530: OPTS="-ll -noll"
531: else
532: OPTS=-noll
533: fi
534: fi
535:
536: if grep FORCE_REG $srcdir/arch/$machine/machine.h >/dev/null; then
537: OPTS2=''
538: for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
539: OPTS="$OPTS2 $OPTS"
540: else
541: AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
542: fi
543: AC_SUBST(OPTS)
544:
545: AC_TYPE_OFF_T
546: AC_CHECK_SIZEOF(off_t)
547: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
548: ac_small_off_t=$?
549: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
550:
551: ENGINE_FLAGS=
552: AC_SUBST(ENGINE_FLAGS)
553:
554: # Try if GCC understands -fno-gcse
555:
556: AC_MSG_CHECKING([if $CC understands -fno-gcse])
557: CFLAGS_1="$CFLAGS"
558: CFLAGS="$CFLAGS -fno-gcse"
559: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
560: CFLAGS="$CFLAGS_1"
561: AC_MSG_RESULT($ac_nogcse)
562:
563: # Try if GCC understands -fno-strict-aliasing
564: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
565: CFLAGS_1="$CFLAGS"
566: CFLAGS="$CFLAGS -fno-strict-aliasing"
567: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
568: CFLAGS="$CFLAGS_1"
569: AC_MSG_RESULT($ac_nostrictaliasing)
570:
571: # Try if GCC understands -fno-crossjumping
572: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
573: CFLAGS_1="$CFLAGS"
574: CFLAGS="$CFLAGS -fno-crossjumping"
575: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
576: CFLAGS="$CFLAGS_1"
577: AC_MSG_RESULT($ac_nocrossjumping)
578:
579: # Try if GCC understands -fno-reorder-blocks
580: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
581: CFLAGS_1="$CFLAGS"
582: CFLAGS="$CFLAGS -fno-reorder-blocks"
583: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
584: CFLAGS="$CFLAGS_1"
585: AC_MSG_RESULT($ac_noreorder_blocks)
586:
587: # Try if GCC understands -falign-labels=1
588: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
589: CFLAGS_1="$CFLAGS"
590: CFLAGS="$CFLAGS -falign-labels=1"
591: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
592: CFLAGS="$CFLAGS_1"
593: AC_MSG_RESULT($ac_align_labels)
594:
595: # Try if GCC understands -falign-loops=1
596: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
597: CFLAGS_1="$CFLAGS"
598: CFLAGS="$CFLAGS -falign-loops=1"
599: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
600: CFLAGS="$CFLAGS_1"
601: AC_MSG_RESULT($ac_align_loops)
602:
603: # Try if GCC understands -falign-jumps=1
604: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
605: CFLAGS_1="$CFLAGS"
606: CFLAGS="$CFLAGS -falign-jumps=1"
607: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
608: CFLAGS="$CFLAGS_1"
609: AC_MSG_RESULT($ac_align_jumps)
610:
611: # Try if GCC understands __attribute__((unused))
612: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
613: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
614: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
615: AC_MSG_RESULT($MAYBE_UNUSED)
616:
617: #try if m4 understands -s
618: AC_MSG_CHECKING([how to invoke m4])
619: if m4 -s /dev/null >/dev/null 2>&1; then
620: M4="m4 -s"
621: else
622: M4=m4
623: fi
624: AC_SUBST(M4)
625: AC_MSG_RESULT($M4)
626:
627: # Find installed Gforth
628: AC_MSG_CHECKING([for gforth])
629: GFORTH="`cd / && which gforth 2>/dev/null`"
630: #the "$srcdir" = "." test defends agains the "../" bug in gforth-0.6.2
631: (cd / && $GFORTH -e bye >/dev/null 2>/dev/null && test "$srcdir" = ".") || GFORTH=""
632: if test -z "$GFORTH"; then
633: PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
634: kernel_anti_dependence=''
635: else
636: PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
637: kernel_anti_dependence='$(kernel_fi)'
638: fi
639: AC_SUBST(PREFORTH)
640: AC_SUBST(kernel_anti_dependence)
641: AC_MSG_RESULT($PREFORTH)
642:
643: #echo "machine='$machine'"
644:
645: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
646: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
647: AC_SUBST(asm_fs)
648:
649: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
650: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
651: AC_SUBST(disasm_fs)
652:
653: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
654:
655: case "$host_os" in
656: *win32*)
657: # !!!FIXME!!! problems with cygwin and ';' as path separator
658: DIRSEP="\\\\"
659: PATHSEP=";"
660: #we want the builtins of command.com/cmd.exe and its
661: # handling of .com files.
662: #$COMSPEC contains the name of the Windows shell;
663: # the ./ is there, because the bash does not recognize
664: # absolute DOS filenames
665: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
666: ;;
667: *darwin*)
668: #Darwin uses some funny preprocessor by default; eliminate it:
669: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
670: CFLAGS="$CFLAGS -no-cpp-precomp"
671: DIRSEP="/"
672: PATHSEP=":"
673: DEFAULTSYSTEMPREFIX=""
674: #the following magic value was suggested by
675: #http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
676: AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
677: ;;
678: *linux*)
679: DIRSEP="/"
680: PATHSEP=":"
681: DEFAULTSYSTEMPREFIX=""
682: if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
683: LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '\n' : | sed -e 's/:$//'`
684: fi
685: ;;
686: *)
687: DIRSEP="/"
688: PATHSEP=":"
689: DEFAULTSYSTEMPREFIX=""
690: ;;
691: esac
692: AC_SUBST(DIRSEP)
693: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
694: AC_SUBST(PATHSEP)
695: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
696: AC_SUBST(DEFAULTSYSTEMPREFIX)
697: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
698: if test -n "$LTDL_LIBRARY_PATH"; then
699: AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
700: fi
701:
702: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
703: #This magic incantation seems to be completely undocumented.
704: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
705:
706: dnl Now a little support for DOS/DJGCC
707: AC_SUBST(GFORTH_EXE)
708: GFORTH_EXE="true"
709: AC_SUBST(GFORTHFAST_EXE)
710: GFORTHFAST_EXE="true"
711: AC_SUBST(GFORTHITC_EXE)
712: GFORTHITC_EXE="true"
713: AC_SUBST(GFORTHDITC_EXE)
714: GFORTHDITC_EXE="true"
715:
716: AC_SUBST(FORTHSIZES)
717:
718: dnl if test "$PEEPHOLE" = "yes"
719: dnl then
720: dnl PEEPHOLEFLAG="true"
721: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
722: dnl else
723: dnl PEEPHOLEFLAG="false"
724: dnl fi
725: PEEPHOLEFLAG="true"
726: AC_SUBST(PEEPHOLEFLAG)
727:
728: dnl copy commands for systems that don't have links
729: AC_SUBST(LINK_KERNL)
730: LINK_KERNL=""
731:
732: #if test $host_os=dos
733: #then
734: # echo Configuring for DOS!!!
735: # MAKE_EXE="coff2exe gforth"
736: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
737: #fi
738:
739: dnl the following macro produces a warning with autoconf-2.1
740: AC_C_BIGENDIAN
741: AC_SUBST(KERNEL)
742: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
743: if test $ac_cv_c_bigendian != no; then
744: bytesex=b
745: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
746: else
747: bytesex=l
748: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
749: fi
750:
751: #check how to do asm(".skip 16")
752: #echo "CFLAGS=$CFLAGS"
753: #echo "ac_link=$ac_link"
754: AC_MSG_CHECKING([if and how we can waste code space])
755: if test -z "$skipcode"; then
756: skipcode=no
757: CFLAGS_1="$CFLAGS"
758: CFLAGS="$CFLAGS $ENGINE_FLAGS"
759: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
760: do
761: AC_TRY_RUN(
762: [int foo(int,int,int);
763: main()
764: {
765: exit(foo(0,0,0)!=16);
766: }
767: int foo(int x, int y, int z)
768: {
769: static void *labels[]={&&label1, &&label2};
770: if (x) {
771: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
772: label1:
773: asm("$i"); /* or ".space 16" or somesuch */
774: label2: ;
775: }
776: {
777: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
778: return labels[1]-labels[0];
779: }
780: }]
781: ,skipcode=$i; break
782: ,,)
783: done
784: CFLAGS=$CFLAGS_1
785: fi
786: AC_MSG_RESULT($skipcode)
787: if test "$skipcode" = no
788: then
789: if test -z $no_dynamic_default; then
790: no_dynamic_default=1
791: AC_MSG_WARN(Disabling default dynamic native code generation)
792: fi
793: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
794: else
795: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
796: fi
797:
798: AC_MSG_CHECKING([if and how we can do comments in asm statements])
799: #the point here is to get asm statements that look different to
800: #gcc's "optimizer"
801: if test -z "$asmcomment"; then
802: asmcomment=no
803: CFLAGS_1="$CFLAGS"
804: CFLAGS="$CFLAGS $ENGINE_FLAGS"
805: for i in '"# "' '"! "' '"; "'; do
806: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
807: done
808: CFLAGS=$CFLAGS_1
809: fi
810: AC_MSG_RESULT($asmcomment)
811: if test "$asmcomment" != no
812: then
813: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
814: fi
815:
816: test "$no_dynamic_default" || no_dynamic_default=0
817: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
818:
819: dnl Checks for programs.
820: AC_PROG_LN_S
821: AC_PROG_INSTALL
822: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
823:
824: dnl MacOS X has a libtool that does something else
825: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
826:
827: if test -n "$GNU_LIBTOOL"; then
828: build_libcc_named=build-libcc-named
829: else
830: build_libcc_named=""
831: fi
832: AC_SUBST(build_libcc_named)
833:
834:
835: dnl Checks for library functions
836: dnl This check is just for making later checks link with libm.
837: dnl using sin here is no good idea since it is built-into gcc and typechecked
838: AC_CHECK_LIB(m,asin)
839: AC_CHECK_LIB(ltdl,lt_dlinit)
840: #check for libffi 2.x
841: AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
842: if test -z "$FFI_H_NAME"; then
843: AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
844: fi
845: AC_SUBST(FFI_H_NAME)
846: AC_CHECK_LIB(ffi,ffi_call)
847: if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
848: then
849: LIBFFIFLAG="true"
850: LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
851: else
852: LIBFFIFLAG="false"
853: fi
854: #check for ffcall libraries
855: #unfortunately, these four calls are separated out into a library each.
856: AC_CHECK_LIB(avcall,__builtin_avcall)
857: dnl AC_CHECK_LIB(callback,__vacall_r)
858: dnl AC_CHECK_LIB(vacall,vacall)
859: dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
860: if test $ac_cv_lib_avcall___builtin_avcall = yes; then
861: FFCALLFLAG="true"
862: LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
863: else
864: FFCALLFLAG="false"
865: fi
866: if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
867: AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
868: fi
869: AC_SUBST(LIBFFIFLAG)
870: AC_SUBST(FFCALLFLAG)
871: AC_SUBST(LIBCC_BUILD_SRC)
872: if test "$host_os" != "nextstep3"
873: then
874: AC_FUNC_MEMCMP
875: fi
876: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
877: AC_FUNC_FSEEKO
878: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
879: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
880: AC_DECL_SYS_SIGLIST
881: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
882: AC_CHECK_FUNCS(expm1 log1p)
883: AC_REPLACE_FUNCS(rint ecvt)
884: dnl No check for select, because our replacement is no good under
885: dnl anything but DOS
886: AC_CHECK_HEADERS(sys/mman.h fnmatch.h alloca.h wchar.h)
887: AC_FUNC_FNMATCH
888: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
889: AC_CHECK_FUNCS(mmap sysconf getpagesize wcwidth)
890: AM_PATH_LISPDIR
891:
892: kernel_fi=kernl${vwordsize}${bytesex}.fi
893: include_fi=kernl${wordsize}${bytesex}${EC}.fi
894: AC_SUBST(kernel_fi)
895: AC_SUBST(include_fi)
896:
897: #this breaks bindists
898: #dnl replace srource directory by absolute value
899: #if test $srcdir = "."; then srcdir=`pwd`
900: #fi
901:
902: AC_SUBST(machine)
903: AC_CONFIG_FILES([
904: Makefile
905: Makedist
906: gforthmi
907: vmgen
908: machpc.fs
909: envos.fs
910: preforth
911: engine/Makefile
912: engine/libcc.h
913: doc/version.texi
914: build-ec ])
915: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
916: chmod +x gforthmi
917: chmod +x vmgen
918: chmod +x build-ec
919: chmod +x preforth
920: test -d kernel||mkdir kernel
921: if test $srcdir != "."; then ln -sf $srcdir/gforth.el .; fi
922: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
923: $srcdir/mkinstalldirs arch/$machine
924: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],
925: [PACKAGE_VERSION=$PACKAGE_VERSION
926: machine=$machine])
927: AC_OUTPUT
928:
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