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