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 "$CFLAGS" || CFLAGS=-O2
34:
35: AC_ARG_ENABLE(force-reg,
36: AC_HELP_STRING([--enable-force-reg],
37: [ Use explicit register declarations if they appear in
38: the machine.h file. This can cause a good speedup,
39: but also incorrect code with some gcc versions on
40: some processors (default disabled).]),
41: ,enable_force_reg=no)
42: test "$enable_force_reg" = "no"||
43: AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)])
44:
45: AC_ARG_ENABLE(force-ll,
46: AC_HELP_STRING([--enable-force-ll],
47: [ Use explicit long long declarations if they appear in
48: the machine.h file. This can cause a good speedup,
49: but also incorrect code with some gcc versions on
50: some processors (default disabled).]),
51: ,enable_force_ll=no)
52: test "$enable_force_ll" = "no"||
53: AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
54:
55: AC_ARG_ENABLE(force-cdiv,
56: AC_HELP_STRING([--enable-force-cdiv],
57: [ Use the native C division - symmetric - instead of
58: floored division (default disabled).]),
59: ,enable_force_cdiv=no)
60: test "$enable_force_cdiv" = "no"||
61: AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
62:
63: AC_SUBST(PROFEXES)
64: AC_SUBST(PROFOBJS)
65: AC_ARG_ENABLE(prof,
66: AC_HELP_STRING([--enable-prof],
67: [ Build gforth-prof, which outputs frequently occuring
68: sequences of primitives.]),
69: ,enable_prof=no)
70: if test "$enable_prof" = "no"; then
71: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
72: fi
73:
74: AC_ARG_WITH(debug,
75: [ --with-debug specifies option -g to compile with debug info
76: --without-debug omits the -g switch and creates smaller images on
77: machines where "strip" has problems with gcc style
78: debugging informations.],
79: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
80:
81: dnl PEEPHOLE="yes"
82: dnl AC_ARG_WITH(peephole,
83: dnl [ --with-peephole Enable peephole optimization (default)
84: dnl --without-peephole disables peephole optimization. Creates smaller,
85: dnl but slower images.],
86: dnl PEEPHOLE="$withval")
87:
88: GCC_LD="\$(GCC)"
89: EC_MODE="false"
90: EC=""
91: engine2="engine2.o"
92: engine_fast2="engine-fast2.o"
93: no_dynamic=""
94: image_i=""
95: signals_o="io.o signals.o"
96:
97: AC_ARG_WITH(ec,
98: AC_HELP_STRING([--with-ec=<arch>],
99: [ Build gforth for systems without OS.]),
100: [if test "$withval" = "no"; then
101: echo "defining hosted system"
102: else
103: echo "defining standalone system (${withval})"
104: AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
105: EC_MODE="true"
106: EC="-ec"
107: engine2=""
108: engine_fast2=""
109: no_dynamic="-DNO_DYNAMIC"
110: image_i="image.i"
111: if test "$withval" != "yes"; then
112: signals_o="io-${withval}.o"
113: else
114: signals_o="io.o"
115: fi
116: GCC_PATH=$(which $CC)
117: LIB_PATH=${GCC_PATH%/*/*}
118: GCC_LD="\$(LD)"
119: platform=${withval}
120: fi])
121:
122: #variables mentioned in INSTALL
123: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x).])
124: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
125: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
126: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
127: 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)])
128:
129: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
130: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
131: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
132: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
133: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
134: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
135: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
136: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
137: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
138: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
139: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
140: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
141: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
142: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
143: AC_ARG_VAR(asmcomment, [assembler comment start string])
144: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
145:
146: #set up feature test macros, so the tests get them right:
147: # turn on all POSIX, SUSv3, and GNU features if available
148: AC_GNU_SOURCE
149: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
150:
151: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
152: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
153: dnl but not for _XOPEN_SOURCE)
154: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
155: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
156: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
157: # turn on large file support with 64-bit off_t where available
158: AC_SYS_LARGEFILE
159: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
160: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
161:
162: #currently we force direct threading this way. Eventually we should
163: #setup in the arch and engine files right
164:
165: AC_PROG_CC
166:
167: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
168:
169: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
170: test x$condbranch_opt = x &&
171: if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
172: condbranch_opt=0
173: else
174: condbranch_opt=1
175: fi
176: AC_MSG_RESULT($condbranch_opt)
177: AC_SUBST(condbranch_opt)
178:
179: AC_SUBST(CC)
180: AC_SUBST(GCC_LD)
181: AC_SUBST(DEBUGFLAG)
182: AC_SUBST(EC)
183: AC_SUBST(EC_MODE)
184: AC_SUBST(engine2)
185: AC_SUBST(engine_fast2)
186: AC_SUBST(no_dynamic)
187: AC_SUBST(image_i)
188: AC_SUBST(signals_o)
189:
190: #this is used to disable some (not generally essential) part of the
191: #Makefile that some makes don't grok. It would be better to test for
192: #this specific Makefile feature than the make version.
193: AC_MSG_CHECKING(make type)
194: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
195: GNUMAKE='#'
196: test "$make_type" = "GNU Make" && GNUMAKE=''
197: AC_MSG_RESULT($make_type)
198: AC_SUBST(GNUMAKE)
199:
200: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
201: OLDLDFLAGS=$LDFLAGS
202: LDFLAGS="$LDFLAGS -export-dynamic"
203: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
204: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
205: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
206: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
207: AC_MSG_RESULT($ac_export_dynamic)
208:
209: #terminology is a bit unusual here: The host is the system on which
210: #gforth will run; the system on which configure will run is the `build'
211: AC_CANONICAL_HOST
212: case "$host_cpu" in
213: arm*)
214: machine=arm
215: CFLAGS="$CFLAGS -fomit-frame-pointer"
216: if test x$platform = xnxt; then
217: CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
218: fi
219: if test -z $arm_cacheflush; then
220: no_dynamic_default=1
221: arm_cacheflush=arch/arm/cacheflush0
222: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
223: fi
224: AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
225: AC_LIBOBJ(../$arm_cacheflush)
226: #longer skipcodes lead to problems on ARM, and it uses
227: #only 4-byte alignment anyway
228: test "$skipcode" || skipcode="nop"
229: ;;
230: hppa*)
231: machine=hppa
232: $srcdir/mkinstalldirs arch/hppa
233: AC_LIBOBJ(../arch/hppa/cache)
234: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
235: LDFLAGS="$LDFLAGS -Xlinker -N"
236: LIBS="$LIBS -L/lib/pa1.1/"
237: ;;
238: sparc*)
239: machine=sparc
240: ;;
241: i386)
242: machine=386
243: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
244: ;;
245: i486)
246: machine=386
247: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
248: ;;
249: i*86)
250: machine=386
251: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
252: CFLAGS_1="$CFLAGS"
253: CFLAGS="$CFLAGS -march=pentium"
254: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
255: ;;
256: x86_64)
257: case $CC
258: in
259: *-m32*)
260: machine=386
261: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
262: CFLAGS_1="$CFLAGS"
263: CFLAGS="$CFLAGS -march=athlon64"
264: ;;
265: *)
266: machine=amd64
267: ;;
268: esac
269: ;;
270: ia64*)
271: machine=ia64
272: AC_LIBOBJ(../arch/ia64/flush_icache_block)
273: test "$skipcode" || skipcode="nop.i 0"
274: #".skip 16" passes the test below,
275: # but gives an assembler error in engine
276: ;;
277: m68k)
278: machine=m68k
279: CFLAGS="$CFLAGS -fomit-frame-pointer"
280: if test "$host_os" = "nextstep3"
281: then
282: AC_LIBOBJ(termios)
283: fi
284: ;;
285: mips*)
286: machine=mips
287: #dynamic native code has the following problems on MIPS:
288: #
289: #1) J/JAL seems relocatable, but is are only
290: #relocatable within a 256MB-segment. While we try to
291: #get the linker to arrange this, there is no guarantee
292: #that this will succeed (and if the user uses a lot of
293: #memory, it is likely to fail).
294: #
295: #2) The way we generate dynamic native code may
296: #violate MIPS architectural restrictions (in
297: #particular, the delay slots of LW, MFLO, etc.)
298: #
299: #Therefore we disable dynamic native code by default:
300: if test -z $no_dynamic_default; then
301: no_dynamic_default=1
302: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
303: fi
304: ;;
305: alpha*)
306: machine=alpha
307: #full IEEE FP support for more uniformity across platforms:
308: CFLAGS="$CFLAGS -mieee"
309: ;;
310: power*|rs6000)
311: machine=power
312: $srcdir/mkinstalldirs arch/power
313: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
314: #long long is broken on (at least) gcc-2.95.* for PPC
315: test x$ac_cv_sizeof_long_long = x &&
316: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
317: ac_cv_sizeof_long_long=0
318: #The only architecture with enough callee-saved registers
319: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
320: #or use 2, hardly slower at run-time and starts up faster
321: ;;
322: *)
323: AC_MSG_WARN([Using a generic machine description])
324: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
325: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
326: machine=generic
327: #I-cache flushing would be needed for dynamic code generation
328: if test -z $no_dynamic_default; then
329: no_dynamic_default=1
330: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
331: fi
332: esac
333: AC_SUBST(host)
334:
335: MAKEINC=""
336:
337: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
338: if test x$EC_MODE = xtrue
339: then
340: echo "Check for arch/$machine/$platform/gforth.ld"
341: if test -f arch/$machine/$platform/gforth.ld
342: then
343: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
344: if test x$platform = xnxt; then
345: 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 $LIBS"
346: fi
347: fi
348: if test -f arch/$machine/$platform/make.inc
349: then
350: MAKEINC="include ../arch/$machine/$platform/make.inc"
351: fi
352: fi
353: AC_SUBST(MAKEINC)
354:
355: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
356:
357: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
358: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
359: [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
360: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
361: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
362: [number of registers in the default stack cache state for gforth-fast and gforth-native])
363:
364: test x$GCC_PR15242_WORKAROUND = x ||
365: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
366: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
367:
368: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
369: dnl generation on gccs affected by PR15242])
370:
371:
372: if test "${enable_force_ll+set}" = set; then
373: ac_includes_default="$ac_includes_default
374: #include \"arch/generic/128bit.h\""
375: fi
376:
377: dnl the following macro produces a warning with autoconf-2.1
378: AC_CHECK_SIZEOF(char *)
379: case "$ac_cv_sizeof_char_p" in
380: 2)
381: wordsize=16
382: ;;
383: 4)
384: wordsize=32
385: ;;
386: 8)
387: wordsize=64
388: ;;
389: esac
390:
391: AC_CHECK_SIZEOF(void *)
392: case "$ac_cv_sizeof_void_p" in
393: 2)
394: vwordsize=16
395: ;;
396: 4)
397: vwordsize=32
398: ;;
399: 8)
400: vwordsize=64
401: ;;
402: esac
403:
404: AC_CHECK_SIZEOF(char)
405: AC_CHECK_SIZEOF(short)
406: AC_CHECK_SIZEOF(int)
407: AC_CHECK_SIZEOF(long)
408: AC_CHECK_SIZEOF(long long)
409: AC_CHECK_SIZEOF(intptr_t)
410: AC_CHECK_SIZEOF(int128_t)
411: AC_CHECK_SIZEOF(uint128_t)
412:
413: AC_MSG_CHECKING([for a C type for cells])
414: ac_cv_int_type_cell=none
415: case "$ac_cv_sizeof_char_p" in
416: $ac_cv_sizeof_int)
417: ac_cv_int_type_cell=int
418: ;;
419: $ac_cv_sizeof_short)
420: ac_cv_int_type_cell=short
421: ;;
422: $ac_cv_sizeof_char)
423: ac_cv_int_type_cell=char
424: ;;
425: $ac_cv_sizeof_long)
426: ac_cv_int_type_cell=long
427: ;;
428: $ac_cv_sizeof_long_long)
429: ac_cv_int_type_cell="long long"
430: ;;
431: $ac_cv_sizeof_intptr_t)
432: ac_cv_int_type_cell="intptr_t"
433: ;;
434: $ac_cv_sizeof_int128_t)
435: ac_cv_int_type_cell="int128_t"
436: ;;
437: esac
438: AC_MSG_RESULT($ac_cv_int_type_cell)
439: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
440:
441: AC_MSG_CHECKING([for a C type for wydes])
442: ac_cv_wyde_type_cell=none
443: case 2 in
444: $ac_cv_sizeof_int)
445: ac_cv_wyde_type_cell=int
446: ;;
447: $ac_cv_sizeof_short)
448: ac_cv_wyde_type_cell=short
449: ;;
450: $ac_cv_sizeof_char)
451: ac_cv_wyde_type_cell=char
452: ;;
453: $ac_cv_sizeof_long)
454: ac_cv_wyde_type_cell=long
455: ;;
456: $ac_cv_sizeof_long_long)
457: ac_cv_wyde_type_cell="long long"
458: ;;
459: $ac_cv_sizeof_intptr_t)
460: ac_cv_wyde_type_cell="intptr_t"
461: ;;
462: $ac_cv_sizeof_int128_t)
463: ac_cv_wyde_type_cell="int128_t"
464: ;;
465: esac
466: AC_MSG_RESULT($ac_cv_wyde_type_cell)
467: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
468:
469: AC_MSG_CHECKING([for a C type for tetrabytes])
470: ac_cv_tetrabyte_type_cell=none
471: case 4 in
472: $ac_cv_sizeof_int)
473: ac_cv_tetrabyte_type_cell=int
474: ;;
475: $ac_cv_sizeof_short)
476: ac_cv_tetrabyte_type_cell=short
477: ;;
478: $ac_cv_sizeof_char)
479: ac_cv_tetrabyte_type_cell=char
480: ;;
481: $ac_cv_sizeof_long)
482: ac_cv_tetrabyte_type_cell=long
483: ;;
484: $ac_cv_sizeof_long_long)
485: ac_cv_tetrabyte_type_cell="long long"
486: ;;
487: $ac_cv_sizeof_intptr_t)
488: ac_cv_tetrabyte_type_cell="intptr_t"
489: ;;
490: $ac_cv_sizeof_int128_t)
491: ac_cv_tetrabyte_type_cell="int128_t"
492: ;;
493: esac
494: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
495: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
496:
497: AC_MSG_CHECKING([for a C type for double-cells])
498: ac_cv_int_type_double_cell=none
499: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
500: $ac_cv_sizeof_short)
501: ac_cv_int_type_double_cell=short
502: ;;
503: $ac_cv_sizeof_int)
504: ac_cv_int_type_double_cell=int
505: ;;
506: $ac_cv_sizeof_long)
507: ac_cv_int_type_double_cell=long
508: ;;
509: $ac_cv_sizeof_long_long)
510: ac_cv_int_type_double_cell="long long"
511: ;;
512: $ac_cv_sizeof_intptr_t)
513: ac_cv_int_type_double_cell="intptr_t"
514: ;;
515: $ac_cv_sizeof_int128_t)
516: ac_cv_int_type_double_cell="int128_t"
517: ;;
518: esac
519: AC_MSG_RESULT($ac_cv_int_type_double_cell)
520:
521: AC_MSG_CHECKING([for a C type for unsigned double-cells])
522: ac_cv_int_type_double_ucell=none
523: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
524: $ac_cv_sizeof_short)
525: ac_cv_int_type_double_ucell="unsigned short"
526: ;;
527: $ac_cv_sizeof_int)
528: ac_cv_int_type_double_ucell="unsigned int"
529: ;;
530: $ac_cv_sizeof_long)
531: ac_cv_int_type_double_ucell="unsigned long"
532: ;;
533: $ac_cv_sizeof_long_long)
534: ac_cv_int_type_double_ucell="unsigned long long"
535: ;;
536: $ac_cv_sizeof_intptr_t)
537: ac_cv_int_type_double_ucell="unsigned intptr_t"
538: ;;
539: $ac_cv_sizeof_uint128_t)
540: ac_cv_int_type_double_ucell="uint128_t"
541: ;;
542: esac
543: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
544:
545: if test "$ac_cv_int_type_double_cell" = none || \
546: test "$ac_cv_int_type_double_ucell" = none
547: then
548: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
549: AC_LIBOBJ(dblsub)
550: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
551: else
552: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
553: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
554: fi
555:
556: AC_TYPE_OFF_T
557: AC_CHECK_SIZEOF(off_t)
558: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
559: ac_small_off_t=$?
560: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
561:
562: ENGINE_FLAGS=
563: AC_SUBST(ENGINE_FLAGS)
564:
565: # Try if GCC understands -fno-gcse
566:
567: AC_MSG_CHECKING([if $CC understands -fno-gcse])
568: CFLAGS_1="$CFLAGS"
569: CFLAGS="$CFLAGS -fno-gcse"
570: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
571: CFLAGS="$CFLAGS_1"
572: AC_MSG_RESULT($ac_nogcse)
573:
574: # Try if GCC understands -fno-strict-aliasing
575: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
576: CFLAGS_1="$CFLAGS"
577: CFLAGS="$CFLAGS -fno-strict-aliasing"
578: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
579: CFLAGS="$CFLAGS_1"
580: AC_MSG_RESULT($ac_nostrictaliasing)
581:
582: # Try if GCC understands -fno-crossjumping
583: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
584: CFLAGS_1="$CFLAGS"
585: CFLAGS="$CFLAGS -fno-crossjumping"
586: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
587: CFLAGS="$CFLAGS_1"
588: AC_MSG_RESULT($ac_nocrossjumping)
589:
590: # Try if GCC understands -fno-reorder-blocks
591: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
592: CFLAGS_1="$CFLAGS"
593: CFLAGS="$CFLAGS -fno-reorder-blocks"
594: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
595: CFLAGS="$CFLAGS_1"
596: AC_MSG_RESULT($ac_noreorder_blocks)
597:
598: # Try if GCC understands -falign-labels=1
599: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
600: CFLAGS_1="$CFLAGS"
601: CFLAGS="$CFLAGS -falign-labels=1"
602: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
603: CFLAGS="$CFLAGS_1"
604: AC_MSG_RESULT($ac_align_labels)
605:
606: # Try if GCC understands -falign-loops=1
607: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
608: CFLAGS_1="$CFLAGS"
609: CFLAGS="$CFLAGS -falign-loops=1"
610: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
611: CFLAGS="$CFLAGS_1"
612: AC_MSG_RESULT($ac_align_loops)
613:
614: # Try if GCC understands -falign-jumps=1
615: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
616: CFLAGS_1="$CFLAGS"
617: CFLAGS="$CFLAGS -falign-jumps=1"
618: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
619: CFLAGS="$CFLAGS_1"
620: AC_MSG_RESULT($ac_align_jumps)
621:
622: # Try if GCC understands __attribute__((unused))
623: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
624: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
625: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
626: AC_MSG_RESULT($MAYBE_UNUSED)
627:
628: #try if m4 understands -s
629: AC_MSG_CHECKING([how to invoke m4])
630: if m4 -s /dev/null >/dev/null 2>&1; then
631: M4="m4 -s"
632: else
633: M4=m4
634: fi
635: AC_SUBST(M4)
636: AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
637: AC_MSG_RESULT($M4)
638:
639: # Find installed Gforth
640: AC_MSG_CHECKING([for gforth])
641: GFORTH="`which gforth 2>/dev/null`"
642: if test ! -z "$GFORTH"; then GFORTH="$GFORTH -m4M" ; fi
643: AC_SUBST(GFORTH)
644: AC_DEFINE_UNQUOTED(GFORTH,"$GFORTH",[How to invoke gforth])
645: AC_MSG_RESULT($GFORTH)
646:
647: echo "machine='$machine'"
648:
649: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
650: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
651: AC_SUBST(asm_fs)
652:
653: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
654: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
655: AC_SUBST(disasm_fs)
656:
657: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
658:
659: case "$host_os" in
660: *win32*)
661: # !!!FIXME!!! problems with cygwin and ';' as path separator
662: DIRSEP="\\\\"
663: PATHSEP=";"
664: #we want the builtins of command.com/cmd.exe and its
665: # handling of .com files.
666: #$COMSPEC contains the name of the Windows shell;
667: # the ./ is there, because the bash does not recognize
668: # absolute DOS filenames
669: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
670: ;;
671: *darwin*)
672: #Darwin uses some funny preprocessor by default; eliminate it:
673: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
674: CFLAGS="$CFLAGS -no-cpp-precomp"
675: DIRSEP="/"
676: PATHSEP=":"
677: DEFAULTSYSTEMPREFIX=""
678: ;;
679: *)
680: DIRSEP="/"
681: PATHSEP=":"
682: DEFAULTSYSTEMPREFIX=""
683: ;;
684: esac
685: AC_SUBST(DIRSEP)
686: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
687: AC_SUBST(PATHSEP)
688: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
689: AC_SUBST(DEFAULTSYSTEMPREFIX)
690: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
691:
692: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
693: #This magic incantation seems to be completely undocumented.
694: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
695:
696: dnl Now a little support for DOS/DJGCC
697: AC_SUBST(GFORTH_EXE)
698: GFORTH_EXE=""
699: AC_SUBST(GFORTHFAST_EXE)
700: GFORTHFAST_EXE=""
701: AC_SUBST(GFORTHITC_EXE)
702: GFORTHITC_EXE=""
703: AC_SUBST(GFORTHDITC_EXE)
704: GFORTHDITC_EXE=""
705:
706: AC_SUBST(FORTHSIZES)
707:
708: dnl if test "$PEEPHOLE" = "yes"
709: dnl then
710: dnl PEEPHOLEFLAG="true"
711: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
712: dnl else
713: dnl PEEPHOLEFLAG="false"
714: dnl fi
715: PEEPHOLEFLAG="true"
716: AC_SUBST(PEEPHOLEFLAG)
717:
718: dnl copy commands for systems that don't have links
719: AC_SUBST(LINK_KERNL)
720: LINK_KERNL=""
721:
722: #if test $host_os=dos
723: #then
724: # echo Configuring for DOS!!!
725: # MAKE_EXE="coff2exe gforth"
726: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
727: #fi
728:
729: dnl the following macro produces a warning with autoconf-2.1
730: AC_C_BIGENDIAN
731: AC_SUBST(KERNEL)
732: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
733: if test $ac_cv_c_bigendian = yes; then
734: bytesex=b
735: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
736: else
737: bytesex=l
738: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
739: fi
740:
741: #check how to do asm(".skip 16")
742: #echo "CFLAGS=$CFLAGS"
743: #echo "ac_link=$ac_link"
744: AC_MSG_CHECKING([if and how we can waste code space])
745: if test -z "$skipcode"; then
746: skipcode=no
747: CFLAGS_1="$CFLAGS"
748: CFLAGS="$CFLAGS $ENGINE_FLAGS"
749: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
750: do
751: AC_TRY_RUN(
752: [int foo(int,int,int);
753: main()
754: {
755: exit(foo(0,0,0)!=16);
756: }
757: int foo(int x, int y, int z)
758: {
759: static void *labels[]={&&label1, &&label2};
760: if (x) {
761: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
762: label1:
763: asm("$i"); /* or ".space 16" or somesuch */
764: label2: ;
765: }
766: {
767: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
768: return labels[1]-labels[0];
769: }
770: }]
771: ,skipcode=$i; break
772: ,,)
773: done
774: CFLAGS=$CFLAGS_1
775: fi
776: AC_MSG_RESULT($skipcode)
777: if test "$skipcode" = no
778: then
779: if test -z $no_dynamic_default; then
780: no_dynamic_default=1
781: AC_MSG_WARN(Disabling default dynamic native code generation)
782: fi
783: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
784: else
785: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
786: fi
787:
788: AC_MSG_CHECKING([if and how we can do comments in asm statements])
789: #the point here is to get asm statements that look different to
790: #gcc's "optimizer"
791: if test -z "$asmcomment"; then
792: asmcomment=no
793: CFLAGS_1="$CFLAGS"
794: CFLAGS="$CFLAGS $ENGINE_FLAGS"
795: for i in '"# "' '"! "' '"; "'; do
796: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
797: done
798: CFLAGS=$CFLAGS_1
799: fi
800: AC_MSG_RESULT($asmcomment)
801: if test "$asmcomment" != no
802: then
803: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
804: fi
805:
806: test "$no_dynamic_default" || no_dynamic_default=0
807: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
808:
809: dnl Checks for programs.
810: AC_PROG_LN_S
811: AC_PROG_INSTALL
812: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
813:
814: dnl MacOS X has a libtool that does something else
815: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
816:
817: dnl Checks for library functions
818: dnl This check is just for making later checks link with libm.
819: dnl using sin here is no good idea since it is built-into gcc and typechecked
820: AC_CHECK_LIB(m,asin)
821: AC_CHECK_LIB(ltdl,lt_dlinit)
822: AC_CHECK_LIB(dl,dlopen)
823: dnl check for libffi 2.x
824: AC_CHECK_LIB(ffi,ffi_call)
825: if test $ac_cv_lib_ffi_ffi_call = yes
826: then
827: LIBFFIFLAG="true"
828: FFCALLFLAG="false"
829: OLDCALLFLAG="false"
830: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
831: else
832: dnl check for ffcall libraries
833: dnl unfortunately, these four calls are separated out into a library each.
834: AC_CHECK_LIB(avcall,__builtin_avcall)
835: AC_CHECK_LIB(callback,__vacall_r)
836: AC_CHECK_LIB(vacall,vacall)
837: AC_CHECK_LIB(trampoline,alloc_trampoline)
838: LIBFFIFLAG="false"
839: FFCALLFLAG="false"
840: OLDCALLFLAG="true"
841: 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])
842: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
843: fi
844: AC_SUBST(LIBFFIFLAG)
845: AC_SUBST(FFCALLFLAG)
846: AC_SUBST(OLDCALLFLAG)
847: if test "$host_os" != "nextstep3"
848: then
849: AC_FUNC_MEMCMP
850: fi
851: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
852: AC_FUNC_FSEEKO
853: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
854: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
855: AC_DECL_SYS_SIGLIST
856: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
857: AC_CHECK_FUNCS(expm1 log1p)
858: AC_REPLACE_FUNCS(rint ecvt)
859: dnl No check for select, because our replacement is no good under
860: dnl anything but DOS
861: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
862: AC_FUNC_FNMATCH
863: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
864: AC_CHECK_FUNCS(mmap sysconf getpagesize)
865: AM_PATH_LISPDIR
866:
867: kernel_fi=kernl${vwordsize}${bytesex}.fi
868: include_fi=kernl${wordsize}${bytesex}${EC}.fi
869: AC_SUBST(kernel_fi)
870: AC_SUBST(include_fi)
871:
872: #this breaks bindists
873: #dnl replace srource directory by absolute value
874: #if test $srcdir = "."; then srcdir=`pwd`
875: #fi
876:
877: AC_SUBST(machine)
878: AC_CONFIG_FILES([
879: Makefile
880: Makedist
881: gforthmi
882: vmgen
883: machpc.fs
884: envos.fs
885: engine/Makefile
886: engine/libcc.h
887: doc/version.texi
888: build-ec ])
889: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
890: chmod +x gforthmi
891: chmod +x vmgen
892: chmod +x build-ec
893: test -d kernel||mkdir kernel
894: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
895: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
896: AC_OUTPUT
897:
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