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 $arm_cacheflush; then
191: case "$host_os" in
192: *linux*)
193: arm_cacheflush=arch/arm/cacheflush-linux
194: ;;
195: *)
196: no_dynamic_default=1
197: arm_cacheflush=arch/arm/cacheflush0
198: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
199: ;;
200: esac
201: fi
202: AC_LIBSOURCES([../arch/arm/cacheflush0, dnl
203: ../arch/arm/cacheflush1, dnl
204: ../arch/arm/cacheflush2, dnl
205: ../arch/arm/cacheflush-linux])
206: AC_LIBOBJ(../$arm_cacheflush)
207: #longer skipcodes lead to problems on ARM, and it uses
208: #only 4-byte alignment anyway
209: test "$skipcode" || skipcode="nop"
210: ;;
211: hppa*)
212: machine=hppa
213: $srcdir/mkinstalldirs arch/hppa
214: AC_LIBOBJ(../arch/hppa/cache)
215: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
216: LDFLAGS="$LDFLAGS -Xlinker -N"
217: LIBS="$LIBS -L/lib/pa1.1/"
218: ;;
219: sparc*)
220: machine=sparc
221: ;;
222: i386)
223: machine=386
224: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
225: ;;
226: i486)
227: machine=386
228: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
229: ;;
230: i*86)
231: machine=386
232: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
233: CFLAGS_1="$CFLAGS"
234: CFLAGS="$CFLAGS -march=pentium"
235: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
236: ;;
237: x86_64)
238: case $CC
239: in
240: *-m32*)
241: machine=386
242: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
243: CFLAGS_1="$CFLAGS"
244: CFLAGS="$CFLAGS -march=athlon64"
245: ;;
246: *)
247: machine=amd64
248: ;;
249: esac
250: ;;
251: ia64*)
252: machine=ia64
253: AC_LIBOBJ(../arch/ia64/flush_icache_block)
254: test "$skipcode" || skipcode="nop.i 0"
255: #".skip 16" passes the test below,
256: # but gives an assembler error in engine
257: ;;
258: m68k)
259: machine=m68k
260: CFLAGS="$CFLAGS -fomit-frame-pointer"
261: if test "$host_os" = "nextstep3"
262: then
263: AC_LIBOBJ(termios)
264: fi
265: ;;
266: mips*)
267: machine=mips
268: #dynamic native code has the following problems on MIPS:
269: #
270: #1) J/JAL seems relocatable, but is are only
271: #relocatable within a 256MB-segment. While we try to
272: #get the linker to arrange this, there is no guarantee
273: #that this will succeed (and if the user uses a lot of
274: #memory, it is likely to fail).
275: #
276: #2) The way we generate dynamic native code may
277: #violate MIPS architectural restrictions (in
278: #particular, the delay slots of LW, MFLO, etc.)
279: #
280: #Therefore we disable dynamic native code by default:
281: if test -z $no_dynamic_default; then
282: no_dynamic_default=1
283: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
284: fi
285: ;;
286: alpha*)
287: machine=alpha
288: #full IEEE FP support for more uniformity across platforms:
289: CFLAGS="$CFLAGS -mieee"
290: ;;
291: power*|rs6000)
292: machine=power
293: $srcdir/mkinstalldirs arch/power
294: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
295: #long long is broken on (at least) gcc-2.95.* for PPC
296: test x$ac_cv_sizeof_long_long = x &&
297: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
298: ac_cv_sizeof_long_long=0
299: #The only architecture with enough callee-saved registers
300: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
301: #or use 2, hardly slower at run-time and starts up faster
302: ;;
303: *)
304: AC_MSG_WARN([Using a generic machine description])
305: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
306: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
307: machine=generic
308: #I-cache flushing would be needed for dynamic code generation
309: if test -z $no_dynamic_default; then
310: no_dynamic_default=1
311: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
312: fi
313: esac
314: AC_SUBST(host)
315:
316: MAKEINC=""
317:
318: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
319: if test x$EC_MODE = xtrue
320: then
321: echo "Check for arch/$machine/$platform/gforth.ld"
322: if test -f arch/$machine/$platform/gforth.ld
323: then
324: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
325: if test x$platform = xnxt; then
326: 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 $LIBS"
327: fi
328: fi
329: if test -f arch/$machine/$platform/make.inc
330: then
331: MAKEINC="include ../arch/$machine/$platform/make.inc"
332: fi
333: fi
334: AC_SUBST(MAKEINC)
335:
336: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
337:
338: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
339: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
340: [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
341: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
342: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
343: [number of registers in the default stack cache state for gforth-fast and gforth-native])
344:
345: test x$GCC_PR15242_WORKAROUND = x ||
346: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
347: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
348:
349: dnl the following macro produces a warning with autoconf-2.1
350: AC_CHECK_SIZEOF(char *)
351: case "$ac_cv_sizeof_char_p" in
352: 2)
353: wordsize=16
354: ;;
355: 4)
356: wordsize=32
357: ;;
358: 8)
359: wordsize=64
360: ;;
361: esac
362:
363: AC_CHECK_SIZEOF(void *)
364: case "$ac_cv_sizeof_void_p" in
365: 2)
366: vwordsize=16
367: ;;
368: 4)
369: vwordsize=32
370: ;;
371: 8)
372: vwordsize=64
373: ;;
374: esac
375:
376: AC_CHECK_SIZEOF(char)
377: AC_CHECK_SIZEOF(short)
378: AC_CHECK_SIZEOF(int)
379: AC_CHECK_SIZEOF(long)
380: AC_CHECK_SIZEOF(long long)
381: AC_CHECK_SIZEOF(intptr_t)
382: AC_CHECK_SIZEOF(int128_t)
383: AC_CHECK_SIZEOF(uint128_t)
384:
385: AC_MSG_CHECKING([for a C type for cells])
386: ac_cv_int_type_cell=none
387: case "$ac_cv_sizeof_char_p" in
388: $ac_cv_sizeof_int)
389: ac_cv_int_type_cell=int
390: ;;
391: $ac_cv_sizeof_short)
392: ac_cv_int_type_cell=short
393: ;;
394: $ac_cv_sizeof_char)
395: ac_cv_int_type_cell=char
396: ;;
397: $ac_cv_sizeof_long)
398: ac_cv_int_type_cell=long
399: ;;
400: $ac_cv_sizeof_long_long)
401: ac_cv_int_type_cell="long long"
402: ;;
403: $ac_cv_sizeof_intptr_t)
404: ac_cv_int_type_cell="intptr_t"
405: ;;
406: esac
407: AC_MSG_RESULT($ac_cv_int_type_cell)
408: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
409:
410: AC_MSG_CHECKING([for a C type for wydes])
411: ac_cv_wyde_type_cell=none
412: case 2 in
413: $ac_cv_sizeof_int)
414: ac_cv_wyde_type_cell=int
415: ;;
416: $ac_cv_sizeof_short)
417: ac_cv_wyde_type_cell=short
418: ;;
419: $ac_cv_sizeof_char)
420: ac_cv_wyde_type_cell=char
421: ;;
422: $ac_cv_sizeof_long)
423: ac_cv_wyde_type_cell=long
424: ;;
425: $ac_cv_sizeof_long_long)
426: ac_cv_wyde_type_cell="long long"
427: ;;
428: $ac_cv_sizeof_intptr_t)
429: ac_cv_wyde_type_cell="intptr_t"
430: ;;
431: esac
432: AC_MSG_RESULT($ac_cv_wyde_type_cell)
433: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
434:
435: AC_MSG_CHECKING([for a C type for tetrabytes])
436: ac_cv_tetrabyte_type_cell=none
437: case 4 in
438: $ac_cv_sizeof_int)
439: ac_cv_tetrabyte_type_cell=int
440: ;;
441: $ac_cv_sizeof_short)
442: ac_cv_tetrabyte_type_cell=short
443: ;;
444: $ac_cv_sizeof_char)
445: ac_cv_tetrabyte_type_cell=char
446: ;;
447: $ac_cv_sizeof_long)
448: ac_cv_tetrabyte_type_cell=long
449: ;;
450: $ac_cv_sizeof_long_long)
451: ac_cv_tetrabyte_type_cell="long long"
452: ;;
453: $ac_cv_sizeof_intptr_t)
454: ac_cv_tetrabyte_type_cell="intptr_t"
455: ;;
456: esac
457: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
458: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
459:
460: AC_MSG_CHECKING([for a C type for double-cells])
461: ac_cv_int_type_double_cell=none
462: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
463: $ac_cv_sizeof_short)
464: ac_cv_int_type_double_cell=short
465: ;;
466: $ac_cv_sizeof_int)
467: ac_cv_int_type_double_cell=int
468: ;;
469: $ac_cv_sizeof_long)
470: ac_cv_int_type_double_cell=long
471: ;;
472: $ac_cv_sizeof_long_long)
473: ac_cv_int_type_double_cell="long long"
474: ;;
475: $ac_cv_sizeof_intptr_t)
476: ac_cv_int_type_double_cell="intptr_t"
477: ;;
478: $ac_cv_sizeof_int128_t)
479: ac_cv_int_type_double_cell="int128_t"
480: ;;
481: esac
482: AC_MSG_RESULT($ac_cv_int_type_double_cell)
483:
484: AC_MSG_CHECKING([for a C type for unsigned double-cells])
485: ac_cv_int_type_double_ucell=none
486: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
487: $ac_cv_sizeof_short)
488: ac_cv_int_type_double_ucell="unsigned short"
489: ;;
490: $ac_cv_sizeof_int)
491: ac_cv_int_type_double_ucell="unsigned int"
492: ;;
493: $ac_cv_sizeof_long)
494: ac_cv_int_type_double_ucell="unsigned long"
495: ;;
496: $ac_cv_sizeof_long_long)
497: ac_cv_int_type_double_ucell="unsigned long long"
498: ;;
499: $ac_cv_sizeof_intptr_t)
500: ac_cv_int_type_double_ucell="unsigned intptr_t"
501: ;;
502: $ac_cv_sizeof_uint128_t)
503: ac_cv_int_type_double_ucell="uint128_t"
504: ;;
505: esac
506: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
507:
508: if test "$ac_cv_int_type_double_cell" != none && \
509: test "$ac_cv_int_type_double_ucell" != none
510: then
511: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
512: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
513: OPTS=-ll
514: else
515: if test "$ac_cv_sizeof_char_p" == 8; then
516: OPTS="-ll -noll"
517: else
518: OPTS=-noll
519: fi
520: fi
521:
522: if grep -q FORCE_REG arch/$machine/machine.h; then
523: OPTS=`for i in $OPTS; do echo -n "$i-reg "; done`$OPTS
524: fi
525: AC_SUBST(OPTS)
526:
527: AC_TYPE_OFF_T
528: AC_CHECK_SIZEOF(off_t)
529: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
530: ac_small_off_t=$?
531: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
532:
533: ENGINE_FLAGS=
534: AC_SUBST(ENGINE_FLAGS)
535:
536: # Try if GCC understands -fno-gcse
537:
538: AC_MSG_CHECKING([if $CC understands -fno-gcse])
539: CFLAGS_1="$CFLAGS"
540: CFLAGS="$CFLAGS -fno-gcse"
541: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
542: CFLAGS="$CFLAGS_1"
543: AC_MSG_RESULT($ac_nogcse)
544:
545: # Try if GCC understands -fno-strict-aliasing
546: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
547: CFLAGS_1="$CFLAGS"
548: CFLAGS="$CFLAGS -fno-strict-aliasing"
549: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
550: CFLAGS="$CFLAGS_1"
551: AC_MSG_RESULT($ac_nostrictaliasing)
552:
553: # Try if GCC understands -fno-crossjumping
554: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
555: CFLAGS_1="$CFLAGS"
556: CFLAGS="$CFLAGS -fno-crossjumping"
557: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
558: CFLAGS="$CFLAGS_1"
559: AC_MSG_RESULT($ac_nocrossjumping)
560:
561: # Try if GCC understands -fno-reorder-blocks
562: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
563: CFLAGS_1="$CFLAGS"
564: CFLAGS="$CFLAGS -fno-reorder-blocks"
565: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
566: CFLAGS="$CFLAGS_1"
567: AC_MSG_RESULT($ac_noreorder_blocks)
568:
569: # Try if GCC understands -falign-labels=1
570: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
571: CFLAGS_1="$CFLAGS"
572: CFLAGS="$CFLAGS -falign-labels=1"
573: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
574: CFLAGS="$CFLAGS_1"
575: AC_MSG_RESULT($ac_align_labels)
576:
577: # Try if GCC understands -falign-loops=1
578: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
579: CFLAGS_1="$CFLAGS"
580: CFLAGS="$CFLAGS -falign-loops=1"
581: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
582: CFLAGS="$CFLAGS_1"
583: AC_MSG_RESULT($ac_align_loops)
584:
585: # Try if GCC understands -falign-jumps=1
586: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
587: CFLAGS_1="$CFLAGS"
588: CFLAGS="$CFLAGS -falign-jumps=1"
589: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
590: CFLAGS="$CFLAGS_1"
591: AC_MSG_RESULT($ac_align_jumps)
592:
593: # Try if GCC understands __attribute__((unused))
594: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
595: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
596: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
597: AC_MSG_RESULT($MAYBE_UNUSED)
598:
599: #try if m4 understands -s
600: AC_MSG_CHECKING([how to invoke m4])
601: if m4 -s /dev/null >/dev/null 2>&1; then
602: M4="m4 -s"
603: else
604: M4=m4
605: fi
606: AC_SUBST(M4)
607: AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
608: AC_MSG_RESULT($M4)
609:
610: # Find installed Gforth
611: AC_MSG_CHECKING([for gforth])
612: GFORTH="`which gforth 2>/dev/null`"
613: if test ! -z "$GFORTH"; then GFORTH="$GFORTH -m4M --die-on-signal -i `gforth --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ; fi
614: AC_SUBST(GFORTH)
615: AC_DEFINE_UNQUOTED(GFORTH,"$GFORTH",[How to invoke gforth])
616: AC_MSG_RESULT($GFORTH)
617:
618: echo "machine='$machine'"
619:
620: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
621: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
622: AC_SUBST(asm_fs)
623:
624: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
625: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
626: AC_SUBST(disasm_fs)
627:
628: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
629:
630: case "$host_os" in
631: *win32*)
632: # !!!FIXME!!! problems with cygwin and ';' as path separator
633: DIRSEP="\\\\"
634: PATHSEP=";"
635: #we want the builtins of command.com/cmd.exe and its
636: # handling of .com files.
637: #$COMSPEC contains the name of the Windows shell;
638: # the ./ is there, because the bash does not recognize
639: # absolute DOS filenames
640: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
641: ;;
642: *darwin*)
643: #Darwin uses some funny preprocessor by default; eliminate it:
644: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
645: CFLAGS="$CFLAGS -no-cpp-precomp"
646: DIRSEP="/"
647: PATHSEP=":"
648: DEFAULTSYSTEMPREFIX=""
649: ;;
650: *)
651: DIRSEP="/"
652: PATHSEP=":"
653: DEFAULTSYSTEMPREFIX=""
654: ;;
655: esac
656: AC_SUBST(DIRSEP)
657: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
658: AC_SUBST(PATHSEP)
659: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
660: AC_SUBST(DEFAULTSYSTEMPREFIX)
661: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
662:
663: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
664: #This magic incantation seems to be completely undocumented.
665: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
666:
667: dnl Now a little support for DOS/DJGCC
668: AC_SUBST(GFORTH_EXE)
669: GFORTH_EXE="true"
670: AC_SUBST(GFORTHFAST_EXE)
671: GFORTHFAST_EXE="true"
672: AC_SUBST(GFORTHITC_EXE)
673: GFORTHITC_EXE="true"
674: AC_SUBST(GFORTHDITC_EXE)
675: GFORTHDITC_EXE="true"
676:
677: AC_SUBST(FORTHSIZES)
678:
679: dnl if test "$PEEPHOLE" = "yes"
680: dnl then
681: dnl PEEPHOLEFLAG="true"
682: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
683: dnl else
684: dnl PEEPHOLEFLAG="false"
685: dnl fi
686: PEEPHOLEFLAG="true"
687: AC_SUBST(PEEPHOLEFLAG)
688:
689: dnl copy commands for systems that don't have links
690: AC_SUBST(LINK_KERNL)
691: LINK_KERNL=""
692:
693: #if test $host_os=dos
694: #then
695: # echo Configuring for DOS!!!
696: # MAKE_EXE="coff2exe gforth"
697: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
698: #fi
699:
700: dnl the following macro produces a warning with autoconf-2.1
701: AC_C_BIGENDIAN
702: AC_SUBST(KERNEL)
703: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
704: if test $ac_cv_c_bigendian = yes; then
705: bytesex=b
706: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
707: else
708: bytesex=l
709: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
710: fi
711:
712: #check how to do asm(".skip 16")
713: #echo "CFLAGS=$CFLAGS"
714: #echo "ac_link=$ac_link"
715: AC_MSG_CHECKING([if and how we can waste code space])
716: if test -z "$skipcode"; then
717: skipcode=no
718: CFLAGS_1="$CFLAGS"
719: CFLAGS="$CFLAGS $ENGINE_FLAGS"
720: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
721: do
722: AC_TRY_RUN(
723: [int foo(int,int,int);
724: main()
725: {
726: exit(foo(0,0,0)!=16);
727: }
728: int foo(int x, int y, int z)
729: {
730: static void *labels[]={&&label1, &&label2};
731: if (x) {
732: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
733: label1:
734: asm("$i"); /* or ".space 16" or somesuch */
735: label2: ;
736: }
737: {
738: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
739: return labels[1]-labels[0];
740: }
741: }]
742: ,skipcode=$i; break
743: ,,)
744: done
745: CFLAGS=$CFLAGS_1
746: fi
747: AC_MSG_RESULT($skipcode)
748: if test "$skipcode" = no
749: then
750: if test -z $no_dynamic_default; then
751: no_dynamic_default=1
752: AC_MSG_WARN(Disabling default dynamic native code generation)
753: fi
754: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
755: else
756: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
757: fi
758:
759: AC_MSG_CHECKING([if and how we can do comments in asm statements])
760: #the point here is to get asm statements that look different to
761: #gcc's "optimizer"
762: if test -z "$asmcomment"; then
763: asmcomment=no
764: CFLAGS_1="$CFLAGS"
765: CFLAGS="$CFLAGS $ENGINE_FLAGS"
766: for i in '"# "' '"! "' '"; "'; do
767: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
768: done
769: CFLAGS=$CFLAGS_1
770: fi
771: AC_MSG_RESULT($asmcomment)
772: if test "$asmcomment" != no
773: then
774: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
775: fi
776:
777: test "$no_dynamic_default" || no_dynamic_default=0
778: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
779:
780: dnl Checks for programs.
781: AC_PROG_LN_S
782: AC_PROG_INSTALL
783: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
784:
785: dnl MacOS X has a libtool that does something else
786: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
787:
788: dnl Checks for library functions
789: dnl This check is just for making later checks link with libm.
790: dnl using sin here is no good idea since it is built-into gcc and typechecked
791: AC_CHECK_LIB(m,asin)
792: AC_CHECK_LIB(ltdl,lt_dlinit)
793: AC_CHECK_LIB(dl,dlopen)
794: dnl check for libffi 2.x
795: AC_CHECK_LIB(ffi,ffi_call)
796: if test $ac_cv_lib_ffi_ffi_call = yes
797: then
798: LIBFFIFLAG="true"
799: FFCALLFLAG="false"
800: OLDCALLFLAG="false"
801: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
802: else
803: dnl check for ffcall libraries
804: dnl unfortunately, these four calls are separated out into a library each.
805: AC_CHECK_LIB(avcall,__builtin_avcall)
806: AC_CHECK_LIB(callback,__vacall_r)
807: AC_CHECK_LIB(vacall,vacall)
808: AC_CHECK_LIB(trampoline,alloc_trampoline)
809: LIBFFIFLAG="false"
810: FFCALLFLAG="false"
811: OLDCALLFLAG="true"
812: 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])
813: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
814: fi
815: AC_SUBST(LIBFFIFLAG)
816: AC_SUBST(FFCALLFLAG)
817: AC_SUBST(OLDCALLFLAG)
818: if test "$host_os" != "nextstep3"
819: then
820: AC_FUNC_MEMCMP
821: fi
822: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
823: AC_FUNC_FSEEKO
824: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
825: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
826: AC_DECL_SYS_SIGLIST
827: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
828: AC_CHECK_FUNCS(expm1 log1p)
829: AC_REPLACE_FUNCS(rint ecvt)
830: dnl No check for select, because our replacement is no good under
831: dnl anything but DOS
832: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
833: AC_FUNC_FNMATCH
834: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
835: AC_CHECK_FUNCS(mmap sysconf getpagesize)
836: AM_PATH_LISPDIR
837:
838: kernel_fi=kernl${vwordsize}${bytesex}.fi
839: include_fi=kernl${wordsize}${bytesex}${EC}.fi
840: AC_SUBST(kernel_fi)
841: AC_SUBST(include_fi)
842:
843: #this breaks bindists
844: #dnl replace srource directory by absolute value
845: #if test $srcdir = "."; then srcdir=`pwd`
846: #fi
847:
848: AC_SUBST(machine)
849: AC_CONFIG_FILES([
850: Makefile
851: Makedist
852: gforthmi
853: vmgen
854: machpc.fs
855: envos.fs
856: engine/Makefile
857: engine/libcc.h
858: doc/version.texi
859: build-ec ])
860: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
861: chmod +x gforthmi
862: chmod +x vmgen
863: chmod +x build-ec
864: test -d kernel||mkdir kernel
865: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
866: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
867: AC_OUTPUT
868:
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