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],[0.6.9-20081006],[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 10, 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: arm_cacheflush=arch/arm/cacheflush-linux
208: ;;
209: *)
210: no_dynamic_default=1
211: arm_cacheflush=arch/arm/cacheflush0
212: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
213: ;;
214: esac
215: fi
216: AC_LIBSOURCES([../arch/arm/cacheflush0, dnl
217: ../arch/arm/cacheflush-linux])
218: AC_LIBOBJ(../$arm_cacheflush)
219: #longer skipcodes lead to problems on ARM, and it uses
220: #only 4-byte alignment anyway
221: test "$skipcode" || skipcode="nop"
222: ;;
223: hppa*)
224: machine=hppa
225: $srcdir/mkinstalldirs arch/hppa
226: AC_LIBOBJ(../arch/hppa/cache)
227: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
228: LDFLAGS="$LDFLAGS -Xlinker -N"
229: LIBS="$LIBS -L/lib/pa1.1/"
230: ;;
231: sparc*)
232: machine=sparc
233: ;;
234: i386)
235: machine=386
236: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
237: ;;
238: i486)
239: machine=386
240: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
241: ;;
242: i*86)
243: machine=386
244: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
245: CFLAGS_1="$CFLAGS"
246: CFLAGS="$CFLAGS -march=pentium"
247: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
248: ;;
249: x86_64)
250: case $CC
251: in
252: *-m32*)
253: machine=386
254: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
255: CFLAGS_1="$CFLAGS"
256: CFLAGS="$CFLAGS -march=athlon64"
257: ;;
258: *)
259: machine=amd64
260: ;;
261: esac
262: ;;
263: ia64*)
264: machine=ia64
265: AC_LIBOBJ(../arch/ia64/flush_icache_block)
266: test "$skipcode" || skipcode="nop.i 0"
267: #".skip 16" passes the test below,
268: # but gives an assembler error in engine
269: ;;
270: m68k)
271: machine=m68k
272: CFLAGS="$CFLAGS -fomit-frame-pointer"
273: if test "$host_os" = "nextstep3"
274: then
275: AC_LIBOBJ(termios)
276: fi
277: ;;
278: mips*)
279: machine=mips
280: #dynamic native code has the following problems on MIPS:
281: #
282: #1) J/JAL seems relocatable, but is are only
283: #relocatable within a 256MB-segment. While we try to
284: #get the linker to arrange this, there is no guarantee
285: #that this will succeed (and if the user uses a lot of
286: #memory, it is likely to fail).
287: #
288: #2) The way we generate dynamic native code may
289: #violate MIPS architectural restrictions (in
290: #particular, the delay slots of LW, MFLO, etc.)
291: #
292: #Therefore we disable dynamic native code by default:
293: if test -z "$no_dynamic_default"; then
294: no_dynamic_default=1
295: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
296: fi
297: ;;
298: alpha*)
299: machine=alpha
300: #full IEEE FP support for more uniformity across platforms:
301: CFLAGS="$CFLAGS -mieee"
302: ;;
303: power*|rs6000)
304: machine=power
305: $srcdir/mkinstalldirs arch/power
306: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
307: #long long is broken on (at least) gcc-2.95.* for PPC
308: test x$ac_cv_sizeof_long_long = x &&
309: ($CC -v 2>&1 |grep 'gcc version 2.95' >/dev/null) &&
310: ac_cv_sizeof_long_long=0
311: #The only architecture with enough callee-saved registers
312: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
313: #or use 2, hardly slower at run-time and starts up faster
314: ;;
315: *)
316: AC_MSG_WARN([Using a generic machine description])
317: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
318: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
319: machine=generic
320: #I-cache flushing would be needed for dynamic code generation
321: if test -z $no_dynamic_default; then
322: no_dynamic_default=1
323: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
324: fi
325: esac
326: AC_SUBST(host)
327:
328: MAKEINC=""
329:
330: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
331: if test x$EC_MODE = xtrue
332: then
333: echo "Check for arch/$machine/$platform/gforth.ld"
334: if test -f arch/$machine/$platform/gforth.ld
335: then
336: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
337: if test x$platform = xnxt; then
338: 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 $LIBS"
339: fi
340: fi
341: if test -f arch/$machine/$platform/make.inc
342: then
343: MAKEINC="include ../arch/$machine/$platform/make.inc"
344: fi
345: fi
346: AC_SUBST(MAKEINC)
347:
348: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
349:
350: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
351: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
352: [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
353: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
354: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
355: [number of registers in the default stack cache state for gforth-fast and gforth-native])
356:
357: test x$GCC_PR15242_WORKAROUND = x ||
358: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
359: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
360:
361: dnl the following macro produces a warning with autoconf-2.1
362: AC_CHECK_SIZEOF(char *)
363: case "$ac_cv_sizeof_char_p" in
364: 2)
365: wordsize=16
366: ;;
367: 4)
368: wordsize=32
369: ;;
370: 8)
371: wordsize=64
372: ;;
373: esac
374:
375: AC_CHECK_SIZEOF(void *)
376: case "$ac_cv_sizeof_void_p" in
377: 2)
378: vwordsize=16
379: ;;
380: 4)
381: vwordsize=32
382: ;;
383: 8)
384: vwordsize=64
385: ;;
386: esac
387:
388: AC_CHECK_SIZEOF(char)
389: AC_CHECK_SIZEOF(short)
390: AC_CHECK_SIZEOF(int)
391: AC_CHECK_SIZEOF(long)
392: AC_CHECK_SIZEOF(long long)
393: AC_CHECK_SIZEOF(intptr_t)
394: AC_CHECK_SIZEOF(int128_t)
395: AC_CHECK_SIZEOF(uint128_t)
396:
397: AC_MSG_CHECKING([for a C type for cells])
398: ac_cv_int_type_cell=none
399: case "$ac_cv_sizeof_char_p" in
400: $ac_cv_sizeof_int)
401: ac_cv_int_type_cell=int
402: ;;
403: $ac_cv_sizeof_short)
404: ac_cv_int_type_cell=short
405: ;;
406: $ac_cv_sizeof_char)
407: ac_cv_int_type_cell=char
408: ;;
409: $ac_cv_sizeof_long)
410: ac_cv_int_type_cell=long
411: ;;
412: $ac_cv_sizeof_long_long)
413: ac_cv_int_type_cell="long long"
414: ;;
415: $ac_cv_sizeof_intptr_t)
416: ac_cv_int_type_cell="intptr_t"
417: ;;
418: esac
419: AC_MSG_RESULT($ac_cv_int_type_cell)
420: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
421:
422: AC_MSG_CHECKING([for a C type for wydes])
423: ac_cv_wyde_type_cell=none
424: case 2 in
425: $ac_cv_sizeof_int)
426: ac_cv_wyde_type_cell=int
427: ;;
428: $ac_cv_sizeof_short)
429: ac_cv_wyde_type_cell=short
430: ;;
431: $ac_cv_sizeof_char)
432: ac_cv_wyde_type_cell=char
433: ;;
434: $ac_cv_sizeof_long)
435: ac_cv_wyde_type_cell=long
436: ;;
437: $ac_cv_sizeof_long_long)
438: ac_cv_wyde_type_cell="long long"
439: ;;
440: $ac_cv_sizeof_intptr_t)
441: ac_cv_wyde_type_cell="intptr_t"
442: ;;
443: esac
444: AC_MSG_RESULT($ac_cv_wyde_type_cell)
445: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
446:
447: AC_MSG_CHECKING([for a C type for tetrabytes])
448: ac_cv_tetrabyte_type_cell=none
449: case 4 in
450: $ac_cv_sizeof_int)
451: ac_cv_tetrabyte_type_cell=int
452: ;;
453: $ac_cv_sizeof_short)
454: ac_cv_tetrabyte_type_cell=short
455: ;;
456: $ac_cv_sizeof_char)
457: ac_cv_tetrabyte_type_cell=char
458: ;;
459: $ac_cv_sizeof_long)
460: ac_cv_tetrabyte_type_cell=long
461: ;;
462: $ac_cv_sizeof_long_long)
463: ac_cv_tetrabyte_type_cell="long long"
464: ;;
465: $ac_cv_sizeof_intptr_t)
466: ac_cv_tetrabyte_type_cell="intptr_t"
467: ;;
468: esac
469: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
470: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
471:
472: AC_MSG_CHECKING([for a C type for double-cells])
473: ac_cv_int_type_double_cell=none
474: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
475: $ac_cv_sizeof_short)
476: ac_cv_int_type_double_cell=short
477: ;;
478: $ac_cv_sizeof_int)
479: ac_cv_int_type_double_cell=int
480: ;;
481: $ac_cv_sizeof_long)
482: ac_cv_int_type_double_cell=long
483: ;;
484: $ac_cv_sizeof_long_long)
485: ac_cv_int_type_double_cell="long long"
486: ;;
487: $ac_cv_sizeof_intptr_t)
488: ac_cv_int_type_double_cell="intptr_t"
489: ;;
490: $ac_cv_sizeof_int128_t)
491: ac_cv_int_type_double_cell="int128_t"
492: ;;
493: esac
494: AC_MSG_RESULT($ac_cv_int_type_double_cell)
495:
496: AC_MSG_CHECKING([for a C type for unsigned double-cells])
497: ac_cv_int_type_double_ucell=none
498: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
499: $ac_cv_sizeof_short)
500: ac_cv_int_type_double_ucell="unsigned short"
501: ;;
502: $ac_cv_sizeof_int)
503: ac_cv_int_type_double_ucell="unsigned int"
504: ;;
505: $ac_cv_sizeof_long)
506: ac_cv_int_type_double_ucell="unsigned long"
507: ;;
508: $ac_cv_sizeof_long_long)
509: ac_cv_int_type_double_ucell="unsigned long long"
510: ;;
511: $ac_cv_sizeof_intptr_t)
512: ac_cv_int_type_double_ucell="unsigned intptr_t"
513: ;;
514: $ac_cv_sizeof_uint128_t)
515: ac_cv_int_type_double_ucell="uint128_t"
516: ;;
517: esac
518: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
519:
520: if test "$ac_cv_int_type_double_cell" != none && \
521: test "$ac_cv_int_type_double_ucell" != none
522: then
523: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
524: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
525: OPTS=-ll
526: else
527: if test "$ac_cv_sizeof_char_p" = 8; then
528: OPTS="-ll -noll"
529: else
530: OPTS=-noll
531: fi
532: fi
533:
534: if grep FORCE_REG arch/$machine/machine.h >/dev/null; then
535: OPTS2=''
536: for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
537: OPTS="$OPTS2 $OPTS"
538: else
539: AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
540: fi
541: AC_SUBST(OPTS)
542:
543: AC_TYPE_OFF_T
544: AC_CHECK_SIZEOF(off_t)
545: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
546: ac_small_off_t=$?
547: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
548:
549: ENGINE_FLAGS=
550: AC_SUBST(ENGINE_FLAGS)
551:
552: # Try if GCC understands -fno-gcse
553:
554: AC_MSG_CHECKING([if $CC understands -fno-gcse])
555: CFLAGS_1="$CFLAGS"
556: CFLAGS="$CFLAGS -fno-gcse"
557: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
558: CFLAGS="$CFLAGS_1"
559: AC_MSG_RESULT($ac_nogcse)
560:
561: # Try if GCC understands -fno-strict-aliasing
562: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
563: CFLAGS_1="$CFLAGS"
564: CFLAGS="$CFLAGS -fno-strict-aliasing"
565: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
566: CFLAGS="$CFLAGS_1"
567: AC_MSG_RESULT($ac_nostrictaliasing)
568:
569: # Try if GCC understands -fno-crossjumping
570: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
571: CFLAGS_1="$CFLAGS"
572: CFLAGS="$CFLAGS -fno-crossjumping"
573: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
574: CFLAGS="$CFLAGS_1"
575: AC_MSG_RESULT($ac_nocrossjumping)
576:
577: # Try if GCC understands -fno-reorder-blocks
578: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
579: CFLAGS_1="$CFLAGS"
580: CFLAGS="$CFLAGS -fno-reorder-blocks"
581: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
582: CFLAGS="$CFLAGS_1"
583: AC_MSG_RESULT($ac_noreorder_blocks)
584:
585: # Try if GCC understands -falign-labels=1
586: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
587: CFLAGS_1="$CFLAGS"
588: CFLAGS="$CFLAGS -falign-labels=1"
589: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
590: CFLAGS="$CFLAGS_1"
591: AC_MSG_RESULT($ac_align_labels)
592:
593: # Try if GCC understands -falign-loops=1
594: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
595: CFLAGS_1="$CFLAGS"
596: CFLAGS="$CFLAGS -falign-loops=1"
597: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
598: CFLAGS="$CFLAGS_1"
599: AC_MSG_RESULT($ac_align_loops)
600:
601: # Try if GCC understands -falign-jumps=1
602: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
603: CFLAGS_1="$CFLAGS"
604: CFLAGS="$CFLAGS -falign-jumps=1"
605: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
606: CFLAGS="$CFLAGS_1"
607: AC_MSG_RESULT($ac_align_jumps)
608:
609: # Try if GCC understands __attribute__((unused))
610: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
611: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
612: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
613: AC_MSG_RESULT($MAYBE_UNUSED)
614:
615: #try if m4 understands -s
616: AC_MSG_CHECKING([how to invoke m4])
617: if m4 -s /dev/null >/dev/null 2>&1; then
618: M4="m4 -s"
619: else
620: M4=m4
621: fi
622: AC_SUBST(M4)
623: AC_MSG_RESULT($M4)
624:
625: # Find installed Gforth
626: AC_MSG_CHECKING([for gforth])
627: GFORTH="`cd / && which gforth 2>/dev/null`"
628: (cd / && $GFORTH -e bye >/dev/null 2>/dev/null) || GFORTH=""
629: if test -z "$GFORTH"; then
630: PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
631: kernel_anti_dependence=''
632: else
633: PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
634: kernel_anti_dependence='$(kernel_fi)'
635: fi
636: AC_SUBST(PREFORTH)
637: AC_SUBST(kernel_anti_dependence)
638: AC_MSG_RESULT($PREFORTH)
639:
640: #echo "machine='$machine'"
641:
642: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
643: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
644: AC_SUBST(asm_fs)
645:
646: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
647: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
648: AC_SUBST(disasm_fs)
649:
650: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
651:
652: case "$host_os" in
653: *win32*)
654: # !!!FIXME!!! problems with cygwin and ';' as path separator
655: DIRSEP="\\\\"
656: PATHSEP=";"
657: #we want the builtins of command.com/cmd.exe and its
658: # handling of .com files.
659: #$COMSPEC contains the name of the Windows shell;
660: # the ./ is there, because the bash does not recognize
661: # absolute DOS filenames
662: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
663: ;;
664: *darwin*)
665: #Darwin uses some funny preprocessor by default; eliminate it:
666: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
667: CFLAGS="$CFLAGS -no-cpp-precomp"
668: DIRSEP="/"
669: PATHSEP=":"
670: DEFAULTSYSTEMPREFIX=""
671: #the following magic value was suggested by
672: #http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
673: AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
674: ;;
675: *linux*)
676: DIRSEP="/"
677: PATHSEP=":"
678: DEFAULTSYSTEMPREFIX=""
679: if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
680: LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '\n' : | sed -e 's/:$//'`
681: fi
682: ;;
683: *)
684: DIRSEP="/"
685: PATHSEP=":"
686: DEFAULTSYSTEMPREFIX=""
687: ;;
688: esac
689: AC_SUBST(DIRSEP)
690: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
691: AC_SUBST(PATHSEP)
692: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
693: AC_SUBST(DEFAULTSYSTEMPREFIX)
694: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
695: if test -n "$LTDL_LIBRARY_PATH"; then
696: AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
697: fi
698:
699: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
700: #This magic incantation seems to be completely undocumented.
701: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
702:
703: dnl Now a little support for DOS/DJGCC
704: AC_SUBST(GFORTH_EXE)
705: GFORTH_EXE="true"
706: AC_SUBST(GFORTHFAST_EXE)
707: GFORTHFAST_EXE="true"
708: AC_SUBST(GFORTHITC_EXE)
709: GFORTHITC_EXE="true"
710: AC_SUBST(GFORTHDITC_EXE)
711: GFORTHDITC_EXE="true"
712:
713: AC_SUBST(FORTHSIZES)
714:
715: dnl if test "$PEEPHOLE" = "yes"
716: dnl then
717: dnl PEEPHOLEFLAG="true"
718: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
719: dnl else
720: dnl PEEPHOLEFLAG="false"
721: dnl fi
722: PEEPHOLEFLAG="true"
723: AC_SUBST(PEEPHOLEFLAG)
724:
725: dnl copy commands for systems that don't have links
726: AC_SUBST(LINK_KERNL)
727: LINK_KERNL=""
728:
729: #if test $host_os=dos
730: #then
731: # echo Configuring for DOS!!!
732: # MAKE_EXE="coff2exe gforth"
733: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
734: #fi
735:
736: dnl the following macro produces a warning with autoconf-2.1
737: AC_C_BIGENDIAN
738: AC_SUBST(KERNEL)
739: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
740: if test $ac_cv_c_bigendian != no; then
741: bytesex=b
742: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
743: else
744: bytesex=l
745: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
746: fi
747:
748: #check how to do asm(".skip 16")
749: #echo "CFLAGS=$CFLAGS"
750: #echo "ac_link=$ac_link"
751: AC_MSG_CHECKING([if and how we can waste code space])
752: if test -z "$skipcode"; then
753: skipcode=no
754: CFLAGS_1="$CFLAGS"
755: CFLAGS="$CFLAGS $ENGINE_FLAGS"
756: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
757: do
758: AC_TRY_RUN(
759: [int foo(int,int,int);
760: main()
761: {
762: exit(foo(0,0,0)!=16);
763: }
764: int foo(int x, int y, int z)
765: {
766: static void *labels[]={&&label1, &&label2};
767: if (x) {
768: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
769: label1:
770: asm("$i"); /* or ".space 16" or somesuch */
771: label2: ;
772: }
773: {
774: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
775: return labels[1]-labels[0];
776: }
777: }]
778: ,skipcode=$i; break
779: ,,)
780: done
781: CFLAGS=$CFLAGS_1
782: fi
783: AC_MSG_RESULT($skipcode)
784: if test "$skipcode" = no
785: then
786: if test -z $no_dynamic_default; then
787: no_dynamic_default=1
788: AC_MSG_WARN(Disabling default dynamic native code generation)
789: fi
790: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
791: else
792: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
793: fi
794:
795: AC_MSG_CHECKING([if and how we can do comments in asm statements])
796: #the point here is to get asm statements that look different to
797: #gcc's "optimizer"
798: if test -z "$asmcomment"; then
799: asmcomment=no
800: CFLAGS_1="$CFLAGS"
801: CFLAGS="$CFLAGS $ENGINE_FLAGS"
802: for i in '"# "' '"! "' '"; "'; do
803: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
804: done
805: CFLAGS=$CFLAGS_1
806: fi
807: AC_MSG_RESULT($asmcomment)
808: if test "$asmcomment" != no
809: then
810: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
811: fi
812:
813: test "$no_dynamic_default" || no_dynamic_default=0
814: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
815:
816: dnl Checks for programs.
817: AC_PROG_LN_S
818: AC_PROG_INSTALL
819: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
820:
821: dnl MacOS X has a libtool that does something else
822: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
823:
824: dnl Checks for library functions
825: dnl This check is just for making later checks link with libm.
826: dnl using sin here is no good idea since it is built-into gcc and typechecked
827: AC_CHECK_LIB(m,asin)
828: AC_CHECK_LIB(ltdl,lt_dlinit)
829: #check for libffi 2.x
830: AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
831: if test -z "$FFI_H_NAME"; then
832: AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
833: fi
834: AC_SUBST(FFI_H_NAME)
835: AC_CHECK_LIB(ffi,ffi_call)
836: if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
837: then
838: LIBFFIFLAG="true"
839: LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
840: else
841: LIBFFIFLAG="false"
842: fi
843: #check for ffcall libraries
844: #unfortunately, these four calls are separated out into a library each.
845: AC_CHECK_LIB(avcall,__builtin_avcall)
846: dnl AC_CHECK_LIB(callback,__vacall_r)
847: dnl AC_CHECK_LIB(vacall,vacall)
848: dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
849: if test $ac_cv_lib_avcall___builtin_avcall = yes; then
850: FFCALLFLAG="true"
851: LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
852: else
853: FFCALLFLAG="false"
854: fi
855: if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
856: AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
857: fi
858: AC_SUBST(LIBFFIFLAG)
859: AC_SUBST(FFCALLFLAG)
860: AC_SUBST(LIBCC_BUILD_SRC)
861: if test "$host_os" != "nextstep3"
862: then
863: AC_FUNC_MEMCMP
864: fi
865: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
866: AC_FUNC_FSEEKO
867: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
868: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
869: AC_DECL_SYS_SIGLIST
870: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
871: AC_CHECK_FUNCS(expm1 log1p)
872: AC_REPLACE_FUNCS(rint ecvt)
873: dnl No check for select, because our replacement is no good under
874: dnl anything but DOS
875: AC_CHECK_HEADERS(sys/mman.h fnmatch.h alloca.h wchar.h)
876: AC_FUNC_FNMATCH
877: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
878: AC_CHECK_FUNCS(mmap sysconf getpagesize wcwidth)
879: AM_PATH_LISPDIR
880:
881: kernel_fi=kernl${vwordsize}${bytesex}.fi
882: include_fi=kernl${wordsize}${bytesex}${EC}.fi
883: AC_SUBST(kernel_fi)
884: AC_SUBST(include_fi)
885:
886: #this breaks bindists
887: #dnl replace srource directory by absolute value
888: #if test $srcdir = "."; then srcdir=`pwd`
889: #fi
890:
891: AC_SUBST(machine)
892: AC_CONFIG_FILES([
893: Makefile
894: Makedist
895: gforthmi
896: vmgen
897: machpc.fs
898: envos.fs
899: preforth
900: engine/Makefile
901: engine/libcc.h
902: doc/version.texi
903: build-ec ])
904: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
905: chmod +x gforthmi
906: chmod +x vmgen
907: chmod +x build-ec
908: chmod +x preforth
909: test -d kernel||mkdir kernel
910: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
911: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
912: AC_OUTPUT
913:
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