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 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],[0.6.9-20070604],[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="June 02, 2007"
29: AC_SUBST(UPDATED)
30: AC_CONFIG_HEADERS(engine/config.h)
31:
32: #suppress the "-g -O2" default
33: test "$CFLAGS" || CFLAGS=-O2
34:
35: AC_ARG_ENABLE(force-cdiv,
36: AC_HELP_STRING([--enable-force-cdiv],
37: [ Use the native C division - symmetric - instead of
38: floored division (default disabled).]),
39: ,enable_force_cdiv=no)
40: test "$enable_force_cdiv" = "no"||
41: AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
42:
43: AC_SUBST(PROFEXES)
44: AC_SUBST(PROFOBJS)
45: AC_ARG_ENABLE(prof,
46: AC_HELP_STRING([--enable-prof],
47: [ Build gforth-prof, which outputs frequently occuring
48: sequences of primitives.]),
49: ,enable_prof=no)
50: if test "$enable_prof" != "no"; then
51: PROFEXES='gforth-prof$(OPT)$(EXE)'; PROFOBJS='engine-prof$(OPT).o main-prof$(OPT).o profile$(OPT).o'
52: fi
53:
54: AC_ARG_WITH(debug,
55: [ --with-debug specifies option -g to compile with debug info
56: --without-debug omits the -g switch and creates smaller images on
57: machines where "strip" has problems with gcc style
58: debugging informations.],
59: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
60:
61: GCC_LD="\$(GCC)"
62: EC_MODE="false"
63: EC=""
64: engine2='engine2$(OPT).o'
65: engine_fast2='engine-fast2$(OPT).o'
66: no_dynamic=""
67: image_i=""
68: signals_o="io.o signals.o"
69:
70: AC_ARG_WITH(ec,
71: AC_HELP_STRING([--with-ec=<arch>],
72: [ Build gforth for systems without OS.]),
73: [if test "$withval" = "no"; then
74: echo "defining hosted system"
75: else
76: echo "defining standalone system (${withval})"
77: AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
78: EC_MODE="true"
79: EC="-ec"
80: engine2=""
81: engine_fast2=""
82: no_dynamic="-DNO_DYNAMIC"
83: image_i="image.i"
84: if test "$withval" != "yes"; then
85: signals_o="io-${withval}.o"
86: else
87: signals_o="io.o"
88: fi
89: GCC_PATH=$(which $CC)
90: LIB_PATH=${GCC_PATH%/*/*}
91: GCC_LD="\$(LD)"
92: platform=${withval}
93: fi])
94:
95: #variables mentioned in INSTALL
96: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x).])
97: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
98: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
99: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
100: 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)])
101:
102: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
103: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
104: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
105: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
106: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
107: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
108: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
109: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
110: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
111: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
112: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
113: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
114: AC_ARG_VAR(asmcomment, [assembler comment start string])
115: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
116:
117: #set up feature test macros, so the tests get them right:
118: # turn on all POSIX, SUSv3, and GNU features if available
119: AC_GNU_SOURCE
120: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
121:
122: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
123: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
124: dnl but not for _XOPEN_SOURCE)
125: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
126: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
127: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
128: # turn on large file support with 64-bit off_t where available
129: AC_SYS_LARGEFILE
130: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
131: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
132:
133: #currently we force direct threading this way. Eventually we should
134: #setup in the arch and engine files right
135:
136: AC_PROG_CC
137:
138: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
139:
140: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
141: test x$condbranch_opt = x &&
142: if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
143: condbranch_opt=0
144: else
145: condbranch_opt=1
146: fi
147: AC_MSG_RESULT($condbranch_opt)
148: AC_SUBST(condbranch_opt)
149:
150: AC_SUBST(CC)
151: AC_SUBST(GCC_LD)
152: AC_SUBST(DEBUGFLAG)
153: AC_SUBST(EC)
154: AC_SUBST(EC_MODE)
155: AC_SUBST(engine2)
156: AC_SUBST(engine_fast2)
157: AC_SUBST(no_dynamic)
158: AC_SUBST(image_i)
159: AC_SUBST(signals_o)
160:
161: #this is used to disable some (not generally essential) part of the
162: #Makefile that some makes don't grok. It would be better to test for
163: #this specific Makefile feature than the make version.
164: AC_MSG_CHECKING(make type)
165: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
166: GNUMAKE='#'
167: test "$make_type" = "GNU Make" && GNUMAKE=''
168: AC_MSG_RESULT($make_type)
169: AC_SUBST(GNUMAKE)
170:
171: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
172: OLDLDFLAGS=$LDFLAGS
173: LDFLAGS="$LDFLAGS -export-dynamic"
174: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
175: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
176: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
177: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
178: AC_MSG_RESULT($ac_export_dynamic)
179:
180: #terminology is a bit unusual here: The host is the system on which
181: #gforth will run; the system on which configure will run is the `build'
182: AC_CANONICAL_HOST
183: case "$host_cpu" in
184: arm*)
185: machine=arm
186: CFLAGS="$CFLAGS -fomit-frame-pointer"
187: if test x$platform = xnxt; then
188: CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
189: fi
190: if test -z $arm_cacheflush; then
191: no_dynamic_default=1
192: arm_cacheflush=arch/arm/cacheflush0
193: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
194: fi
195: AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
196: AC_LIBOBJ(../$arm_cacheflush)
197: #longer skipcodes lead to problems on ARM, and it uses
198: #only 4-byte alignment anyway
199: test "$skipcode" || skipcode="nop"
200: ;;
201: hppa*)
202: machine=hppa
203: $srcdir/mkinstalldirs arch/hppa
204: AC_LIBOBJ(../arch/hppa/cache)
205: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
206: LDFLAGS="$LDFLAGS -Xlinker -N"
207: LIBS="$LIBS -L/lib/pa1.1/"
208: ;;
209: sparc*)
210: machine=sparc
211: ;;
212: i386)
213: machine=386
214: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
215: ;;
216: i486)
217: machine=386
218: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
219: ;;
220: i*86)
221: machine=386
222: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
223: CFLAGS_1="$CFLAGS"
224: CFLAGS="$CFLAGS -march=pentium"
225: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
226: ;;
227: x86_64)
228: case $CC
229: in
230: *-m32*)
231: machine=386
232: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
233: CFLAGS_1="$CFLAGS"
234: CFLAGS="$CFLAGS -march=athlon64"
235: ;;
236: *)
237: machine=amd64
238: ;;
239: esac
240: ;;
241: ia64*)
242: machine=ia64
243: AC_LIBOBJ(../arch/ia64/flush_icache_block)
244: test "$skipcode" || skipcode="nop.i 0"
245: #".skip 16" passes the test below,
246: # but gives an assembler error in engine
247: ;;
248: m68k)
249: machine=m68k
250: CFLAGS="$CFLAGS -fomit-frame-pointer"
251: if test "$host_os" = "nextstep3"
252: then
253: AC_LIBOBJ(termios)
254: fi
255: ;;
256: mips*)
257: machine=mips
258: #dynamic native code has the following problems on MIPS:
259: #
260: #1) J/JAL seems relocatable, but is are only
261: #relocatable within a 256MB-segment. While we try to
262: #get the linker to arrange this, there is no guarantee
263: #that this will succeed (and if the user uses a lot of
264: #memory, it is likely to fail).
265: #
266: #2) The way we generate dynamic native code may
267: #violate MIPS architectural restrictions (in
268: #particular, the delay slots of LW, MFLO, etc.)
269: #
270: #Therefore we disable dynamic native code by default:
271: if test -z $no_dynamic_default; then
272: no_dynamic_default=1
273: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
274: fi
275: ;;
276: alpha*)
277: machine=alpha
278: #full IEEE FP support for more uniformity across platforms:
279: CFLAGS="$CFLAGS -mieee"
280: ;;
281: power*|rs6000)
282: machine=power
283: $srcdir/mkinstalldirs arch/power
284: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
285: #long long is broken on (at least) gcc-2.95.* for PPC
286: test x$ac_cv_sizeof_long_long = x &&
287: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
288: ac_cv_sizeof_long_long=0
289: #The only architecture with enough callee-saved registers
290: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
291: #or use 2, hardly slower at run-time and starts up faster
292: ;;
293: *)
294: AC_MSG_WARN([Using a generic machine description])
295: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
296: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
297: machine=generic
298: #I-cache flushing would be needed for dynamic code generation
299: if test -z $no_dynamic_default; then
300: no_dynamic_default=1
301: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
302: fi
303: esac
304: AC_SUBST(host)
305:
306: MAKEINC=""
307:
308: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
309: if test x$EC_MODE = xtrue
310: then
311: echo "Check for arch/$machine/$platform/gforth.ld"
312: if test -f arch/$machine/$platform/gforth.ld
313: then
314: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
315: if test x$platform = xnxt; then
316: 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 $LIBS"
317: fi
318: fi
319: if test -f arch/$machine/$platform/make.inc
320: then
321: MAKEINC="include ../arch/$machine/$platform/make.inc"
322: fi
323: fi
324: AC_SUBST(MAKEINC)
325:
326: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
327:
328: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
329: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
330: [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
331: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
332: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
333: [number of registers in the default stack cache state for gforth-fast and gforth-native])
334:
335: test x$GCC_PR15242_WORKAROUND = x ||
336: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
337: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
338:
339: dnl the following macro produces a warning with autoconf-2.1
340: AC_CHECK_SIZEOF(char *)
341: case "$ac_cv_sizeof_char_p" in
342: 2)
343: wordsize=16
344: ;;
345: 4)
346: wordsize=32
347: ;;
348: 8)
349: wordsize=64
350: ;;
351: esac
352:
353: AC_CHECK_SIZEOF(void *)
354: case "$ac_cv_sizeof_void_p" in
355: 2)
356: vwordsize=16
357: ;;
358: 4)
359: vwordsize=32
360: ;;
361: 8)
362: vwordsize=64
363: ;;
364: esac
365:
366: AC_CHECK_SIZEOF(char)
367: AC_CHECK_SIZEOF(short)
368: AC_CHECK_SIZEOF(int)
369: AC_CHECK_SIZEOF(long)
370: AC_CHECK_SIZEOF(long long)
371: AC_CHECK_SIZEOF(intptr_t)
372: AC_CHECK_SIZEOF(int128_t)
373: AC_CHECK_SIZEOF(uint128_t)
374:
375: AC_MSG_CHECKING([for a C type for cells])
376: ac_cv_int_type_cell=none
377: case "$ac_cv_sizeof_char_p" in
378: $ac_cv_sizeof_int)
379: ac_cv_int_type_cell=int
380: ;;
381: $ac_cv_sizeof_short)
382: ac_cv_int_type_cell=short
383: ;;
384: $ac_cv_sizeof_char)
385: ac_cv_int_type_cell=char
386: ;;
387: $ac_cv_sizeof_long)
388: ac_cv_int_type_cell=long
389: ;;
390: $ac_cv_sizeof_long_long)
391: ac_cv_int_type_cell="long long"
392: ;;
393: $ac_cv_sizeof_intptr_t)
394: ac_cv_int_type_cell="intptr_t"
395: ;;
396: esac
397: AC_MSG_RESULT($ac_cv_int_type_cell)
398: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
399:
400: AC_MSG_CHECKING([for a C type for wydes])
401: ac_cv_wyde_type_cell=none
402: case 2 in
403: $ac_cv_sizeof_int)
404: ac_cv_wyde_type_cell=int
405: ;;
406: $ac_cv_sizeof_short)
407: ac_cv_wyde_type_cell=short
408: ;;
409: $ac_cv_sizeof_char)
410: ac_cv_wyde_type_cell=char
411: ;;
412: $ac_cv_sizeof_long)
413: ac_cv_wyde_type_cell=long
414: ;;
415: $ac_cv_sizeof_long_long)
416: ac_cv_wyde_type_cell="long long"
417: ;;
418: $ac_cv_sizeof_intptr_t)
419: ac_cv_wyde_type_cell="intptr_t"
420: ;;
421: esac
422: AC_MSG_RESULT($ac_cv_wyde_type_cell)
423: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
424:
425: AC_MSG_CHECKING([for a C type for tetrabytes])
426: ac_cv_tetrabyte_type_cell=none
427: case 4 in
428: $ac_cv_sizeof_int)
429: ac_cv_tetrabyte_type_cell=int
430: ;;
431: $ac_cv_sizeof_short)
432: ac_cv_tetrabyte_type_cell=short
433: ;;
434: $ac_cv_sizeof_char)
435: ac_cv_tetrabyte_type_cell=char
436: ;;
437: $ac_cv_sizeof_long)
438: ac_cv_tetrabyte_type_cell=long
439: ;;
440: $ac_cv_sizeof_long_long)
441: ac_cv_tetrabyte_type_cell="long long"
442: ;;
443: $ac_cv_sizeof_intptr_t)
444: ac_cv_tetrabyte_type_cell="intptr_t"
445: ;;
446: esac
447: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
448: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
449:
450: AC_MSG_CHECKING([for a C type for double-cells])
451: ac_cv_int_type_double_cell=none
452: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
453: $ac_cv_sizeof_short)
454: ac_cv_int_type_double_cell=short
455: ;;
456: $ac_cv_sizeof_int)
457: ac_cv_int_type_double_cell=int
458: ;;
459: $ac_cv_sizeof_long)
460: ac_cv_int_type_double_cell=long
461: ;;
462: $ac_cv_sizeof_long_long)
463: ac_cv_int_type_double_cell="long long"
464: ;;
465: $ac_cv_sizeof_intptr_t)
466: ac_cv_int_type_double_cell="intptr_t"
467: ;;
468: $ac_cv_sizeof_int128_t)
469: ac_cv_int_type_double_cell="int128_t"
470: ;;
471: esac
472: AC_MSG_RESULT($ac_cv_int_type_double_cell)
473:
474: AC_MSG_CHECKING([for a C type for unsigned double-cells])
475: ac_cv_int_type_double_ucell=none
476: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
477: $ac_cv_sizeof_short)
478: ac_cv_int_type_double_ucell="unsigned short"
479: ;;
480: $ac_cv_sizeof_int)
481: ac_cv_int_type_double_ucell="unsigned int"
482: ;;
483: $ac_cv_sizeof_long)
484: ac_cv_int_type_double_ucell="unsigned long"
485: ;;
486: $ac_cv_sizeof_long_long)
487: ac_cv_int_type_double_ucell="unsigned long long"
488: ;;
489: $ac_cv_sizeof_intptr_t)
490: ac_cv_int_type_double_ucell="unsigned intptr_t"
491: ;;
492: $ac_cv_sizeof_uint128_t)
493: ac_cv_int_type_double_ucell="uint128_t"
494: ;;
495: esac
496: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
497:
498: if test "$ac_cv_int_type_double_cell" != none && \
499: test "$ac_cv_int_type_double_ucell" != none
500: then
501: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
502: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
503: OPTS=-ll
504: else
505: if test "$ac_cv_sizeof_char_p" == 8; then
506: OPTS="-ll -no-ll"
507: else
508: OPTS=-noll
509: fi
510: fi
511:
512: if grep -q FORCE_REG arch/$machine/machine.h; then
513: OPTS=`for i in $OPTS; do echo -n "$i-reg "; done`$OPTS
514: fi
515: AC_SUBST(OPTS)
516:
517: AC_TYPE_OFF_T
518: AC_CHECK_SIZEOF(off_t)
519: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
520: ac_small_off_t=$?
521: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
522:
523: ENGINE_FLAGS=
524: AC_SUBST(ENGINE_FLAGS)
525:
526: # Try if GCC understands -fno-gcse
527:
528: AC_MSG_CHECKING([if $CC understands -fno-gcse])
529: CFLAGS_1="$CFLAGS"
530: CFLAGS="$CFLAGS -fno-gcse"
531: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
532: CFLAGS="$CFLAGS_1"
533: AC_MSG_RESULT($ac_nogcse)
534:
535: # Try if GCC understands -fno-strict-aliasing
536: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
537: CFLAGS_1="$CFLAGS"
538: CFLAGS="$CFLAGS -fno-strict-aliasing"
539: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
540: CFLAGS="$CFLAGS_1"
541: AC_MSG_RESULT($ac_nostrictaliasing)
542:
543: # Try if GCC understands -fno-crossjumping
544: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
545: CFLAGS_1="$CFLAGS"
546: CFLAGS="$CFLAGS -fno-crossjumping"
547: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
548: CFLAGS="$CFLAGS_1"
549: AC_MSG_RESULT($ac_nocrossjumping)
550:
551: # Try if GCC understands -fno-reorder-blocks
552: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
553: CFLAGS_1="$CFLAGS"
554: CFLAGS="$CFLAGS -fno-reorder-blocks"
555: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
556: CFLAGS="$CFLAGS_1"
557: AC_MSG_RESULT($ac_noreorder_blocks)
558:
559: # Try if GCC understands -falign-labels=1
560: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
561: CFLAGS_1="$CFLAGS"
562: CFLAGS="$CFLAGS -falign-labels=1"
563: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
564: CFLAGS="$CFLAGS_1"
565: AC_MSG_RESULT($ac_align_labels)
566:
567: # Try if GCC understands -falign-loops=1
568: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
569: CFLAGS_1="$CFLAGS"
570: CFLAGS="$CFLAGS -falign-loops=1"
571: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
572: CFLAGS="$CFLAGS_1"
573: AC_MSG_RESULT($ac_align_loops)
574:
575: # Try if GCC understands -falign-jumps=1
576: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
577: CFLAGS_1="$CFLAGS"
578: CFLAGS="$CFLAGS -falign-jumps=1"
579: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
580: CFLAGS="$CFLAGS_1"
581: AC_MSG_RESULT($ac_align_jumps)
582:
583: # Try if GCC understands __attribute__((unused))
584: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
585: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
586: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
587: AC_MSG_RESULT($MAYBE_UNUSED)
588:
589: #try if m4 understands -s
590: AC_MSG_CHECKING([how to invoke m4])
591: if m4 -s /dev/null >/dev/null 2>&1; then
592: M4="m4 -s"
593: else
594: M4=m4
595: fi
596: AC_SUBST(M4)
597: AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
598: AC_MSG_RESULT($M4)
599:
600: # Find installed Gforth
601: AC_MSG_CHECKING([for gforth])
602: GFORTH="`which gforth 2>/dev/null`"
603: if test ! -z "$GFORTH"; then GFORTH="$GFORTH -m4M" ; fi
604: AC_SUBST(GFORTH)
605: AC_DEFINE_UNQUOTED(GFORTH,"$GFORTH",[How to invoke gforth])
606: AC_MSG_RESULT($GFORTH)
607:
608: echo "machine='$machine'"
609:
610: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
611: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
612: AC_SUBST(asm_fs)
613:
614: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
615: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
616: AC_SUBST(disasm_fs)
617:
618: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
619:
620: case "$host_os" in
621: *win32*)
622: # !!!FIXME!!! problems with cygwin and ';' as path separator
623: DIRSEP="\\\\"
624: PATHSEP=";"
625: #we want the builtins of command.com/cmd.exe and its
626: # handling of .com files.
627: #$COMSPEC contains the name of the Windows shell;
628: # the ./ is there, because the bash does not recognize
629: # absolute DOS filenames
630: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
631: ;;
632: *darwin*)
633: #Darwin uses some funny preprocessor by default; eliminate it:
634: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
635: CFLAGS="$CFLAGS -no-cpp-precomp"
636: DIRSEP="/"
637: PATHSEP=":"
638: DEFAULTSYSTEMPREFIX=""
639: ;;
640: *)
641: DIRSEP="/"
642: PATHSEP=":"
643: DEFAULTSYSTEMPREFIX=""
644: ;;
645: esac
646: AC_SUBST(DIRSEP)
647: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
648: AC_SUBST(PATHSEP)
649: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
650: AC_SUBST(DEFAULTSYSTEMPREFIX)
651: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
652:
653: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
654: #This magic incantation seems to be completely undocumented.
655: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
656:
657: dnl Now a little support for DOS/DJGCC
658: AC_SUBST(GFORTH_EXE)
659: GFORTH_EXE="true"
660: AC_SUBST(GFORTHFAST_EXE)
661: GFORTHFAST_EXE="true"
662: AC_SUBST(GFORTHITC_EXE)
663: GFORTHITC_EXE="true"
664: AC_SUBST(GFORTHDITC_EXE)
665: GFORTHDITC_EXE="true"
666:
667: AC_SUBST(FORTHSIZES)
668:
669: dnl if test "$PEEPHOLE" = "yes"
670: dnl then
671: dnl PEEPHOLEFLAG="true"
672: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
673: dnl else
674: dnl PEEPHOLEFLAG="false"
675: dnl fi
676: PEEPHOLEFLAG="true"
677: AC_SUBST(PEEPHOLEFLAG)
678:
679: dnl copy commands for systems that don't have links
680: AC_SUBST(LINK_KERNL)
681: LINK_KERNL=""
682:
683: #if test $host_os=dos
684: #then
685: # echo Configuring for DOS!!!
686: # MAKE_EXE="coff2exe gforth"
687: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
688: #fi
689:
690: dnl the following macro produces a warning with autoconf-2.1
691: AC_C_BIGENDIAN
692: AC_SUBST(KERNEL)
693: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
694: if test $ac_cv_c_bigendian = yes; then
695: bytesex=b
696: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
697: else
698: bytesex=l
699: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
700: fi
701:
702: #check how to do asm(".skip 16")
703: #echo "CFLAGS=$CFLAGS"
704: #echo "ac_link=$ac_link"
705: AC_MSG_CHECKING([if and how we can waste code space])
706: if test -z "$skipcode"; then
707: skipcode=no
708: CFLAGS_1="$CFLAGS"
709: CFLAGS="$CFLAGS $ENGINE_FLAGS"
710: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
711: do
712: AC_TRY_RUN(
713: [int foo(int,int,int);
714: main()
715: {
716: exit(foo(0,0,0)!=16);
717: }
718: int foo(int x, int y, int z)
719: {
720: static void *labels[]={&&label1, &&label2};
721: if (x) {
722: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
723: label1:
724: asm("$i"); /* or ".space 16" or somesuch */
725: label2: ;
726: }
727: {
728: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
729: return labels[1]-labels[0];
730: }
731: }]
732: ,skipcode=$i; break
733: ,,)
734: done
735: CFLAGS=$CFLAGS_1
736: fi
737: AC_MSG_RESULT($skipcode)
738: if test "$skipcode" = no
739: then
740: if test -z $no_dynamic_default; then
741: no_dynamic_default=1
742: AC_MSG_WARN(Disabling default dynamic native code generation)
743: fi
744: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
745: else
746: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
747: fi
748:
749: AC_MSG_CHECKING([if and how we can do comments in asm statements])
750: #the point here is to get asm statements that look different to
751: #gcc's "optimizer"
752: if test -z "$asmcomment"; then
753: asmcomment=no
754: CFLAGS_1="$CFLAGS"
755: CFLAGS="$CFLAGS $ENGINE_FLAGS"
756: for i in '"# "' '"! "' '"; "'; do
757: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
758: done
759: CFLAGS=$CFLAGS_1
760: fi
761: AC_MSG_RESULT($asmcomment)
762: if test "$asmcomment" != no
763: then
764: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
765: fi
766:
767: test "$no_dynamic_default" || no_dynamic_default=0
768: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
769:
770: dnl Checks for programs.
771: AC_PROG_LN_S
772: AC_PROG_INSTALL
773: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
774:
775: dnl MacOS X has a libtool that does something else
776: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
777:
778: dnl Checks for library functions
779: dnl This check is just for making later checks link with libm.
780: dnl using sin here is no good idea since it is built-into gcc and typechecked
781: AC_CHECK_LIB(m,asin)
782: AC_CHECK_LIB(ltdl,lt_dlinit)
783: AC_CHECK_LIB(dl,dlopen)
784: dnl check for libffi 2.x
785: AC_CHECK_LIB(ffi,ffi_call)
786: if test $ac_cv_lib_ffi_ffi_call = yes
787: then
788: LIBFFIFLAG="true"
789: FFCALLFLAG="false"
790: OLDCALLFLAG="false"
791: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
792: else
793: dnl check for ffcall libraries
794: dnl unfortunately, these four calls are separated out into a library each.
795: AC_CHECK_LIB(avcall,__builtin_avcall)
796: AC_CHECK_LIB(callback,__vacall_r)
797: AC_CHECK_LIB(vacall,vacall)
798: AC_CHECK_LIB(trampoline,alloc_trampoline)
799: LIBFFIFLAG="false"
800: FFCALLFLAG="false"
801: OLDCALLFLAG="true"
802: test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && OLDCALLFLAG="false" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries])
803: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
804: fi
805: AC_SUBST(LIBFFIFLAG)
806: AC_SUBST(FFCALLFLAG)
807: AC_SUBST(OLDCALLFLAG)
808: if test "$host_os" != "nextstep3"
809: then
810: AC_FUNC_MEMCMP
811: fi
812: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
813: AC_FUNC_FSEEKO
814: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
815: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
816: AC_DECL_SYS_SIGLIST
817: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
818: AC_CHECK_FUNCS(expm1 log1p)
819: AC_REPLACE_FUNCS(rint ecvt)
820: dnl No check for select, because our replacement is no good under
821: dnl anything but DOS
822: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
823: AC_FUNC_FNMATCH
824: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
825: AC_CHECK_FUNCS(mmap sysconf getpagesize)
826: AM_PATH_LISPDIR
827:
828: kernel_fi=kernl${vwordsize}${bytesex}.fi
829: include_fi=kernl${wordsize}${bytesex}${EC}.fi
830: AC_SUBST(kernel_fi)
831: AC_SUBST(include_fi)
832:
833: #this breaks bindists
834: #dnl replace srource directory by absolute value
835: #if test $srcdir = "."; then srcdir=`pwd`
836: #fi
837:
838: AC_SUBST(machine)
839: AC_CONFIG_FILES([
840: Makefile
841: Makedist
842: gforthmi
843: vmgen
844: machpc.fs
845: envos.fs
846: engine/Makefile
847: engine/libcc.h
848: doc/version.texi
849: build-ec ])
850: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
851: chmod +x gforthmi
852: chmod +x vmgen
853: chmod +x build-ec
854: test -d kernel||mkdir kernel
855: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
856: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
857: AC_OUTPUT
858:
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