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-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:
112: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
113: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
114: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
115: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
116: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
117: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
118: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
119: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
120: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
121: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
122: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
123: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
124: AC_ARG_VAR(asmcomment, [assembler comment start string])
125: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
126:
127: #set up feature test macros, so the tests get them right:
128: # turn on all POSIX, SUSv3, and GNU features if available
129: AC_GNU_SOURCE
130: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
131:
132: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
133: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
134: dnl but not for _XOPEN_SOURCE)
135: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
136: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
137: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
138: # turn on large file support with 64-bit off_t where available
139: AC_SYS_LARGEFILE
140: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
141: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
142:
143: #currently we force direct threading this way. Eventually we should
144: #setup in the arch and engine files right
145:
146: AC_PROG_CC
147:
148: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
149:
150: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
151: test x$condbranch_opt = x &&
152: if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
153: condbranch_opt=0
154: else
155: condbranch_opt=1
156: fi
157: AC_MSG_RESULT($condbranch_opt)
158: AC_SUBST(condbranch_opt)
159:
160: AC_SUBST(CC)
161: AC_SUBST(GCC_LD)
162: AC_SUBST(DEBUGFLAG)
163: AC_SUBST(EC)
164: AC_SUBST(EC_MODE)
165: AC_SUBST(engine2)
166: AC_SUBST(engine_fast2)
167: AC_SUBST(no_dynamic)
168: AC_SUBST(image_i)
169: AC_SUBST(signals_o)
170:
171: #this is used to disable some (not generally essential) part of the
172: #Makefile that some makes don't grok. It would be better to test for
173: #this specific Makefile feature than the make version.
174: AC_MSG_CHECKING(make type)
175: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
176: GNUMAKE='#'
177: test "$make_type" = "GNU Make" && GNUMAKE=''
178: AC_MSG_RESULT($make_type)
179: AC_SUBST(GNUMAKE)
180:
181: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
182: OLDLDFLAGS=$LDFLAGS
183: LDFLAGS="$LDFLAGS -export-dynamic"
184: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
185: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
186: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
187: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
188: AC_MSG_RESULT($ac_export_dynamic)
189:
190: #terminology is a bit unusual here: The host is the system on which
191: #gforth will run; the system on which configure will run is the `build'
192: AC_CANONICAL_HOST
193: case "$host_cpu" in
194: arm*)
195: machine=arm
196: CFLAGS="$CFLAGS -fomit-frame-pointer"
197: if test x$platform = xnxt; then
198: CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
199: fi
200: if test -z $arm_cacheflush; then
201: no_dynamic_default=1
202: arm_cacheflush=arch/arm/cacheflush0
203: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
204: fi
205: AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
206: AC_LIBOBJ(../$arm_cacheflush)
207: #longer skipcodes lead to problems on ARM, and it uses
208: #only 4-byte alignment anyway
209: test "$skipcode" || skipcode="nop"
210: ;;
211: hppa*)
212: machine=hppa
213: $srcdir/mkinstalldirs arch/hppa
214: AC_LIBOBJ(../arch/hppa/cache)
215: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
216: LDFLAGS="$LDFLAGS -Xlinker -N"
217: LIBS="$LIBS -L/lib/pa1.1/"
218: ;;
219: sparc*)
220: machine=sparc
221: ;;
222: i386)
223: machine=386
224: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
225: ;;
226: i486)
227: machine=386
228: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
229: ;;
230: i*86)
231: machine=386
232: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
233: CFLAGS_1="$CFLAGS"
234: CFLAGS="$CFLAGS -march=pentium"
235: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
236: ;;
237: x86_64)
238: case $CC
239: in
240: *-m32*)
241: machine=386
242: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
243: CFLAGS_1="$CFLAGS"
244: CFLAGS="$CFLAGS -march=athlon64"
245: ;;
246: *)
247: machine=amd64
248: ;;
249: esac
250: ;;
251: ia64*)
252: machine=ia64
253: AC_LIBOBJ(../arch/ia64/flush_icache_block)
254: test "$skipcode" || skipcode="nop.i 0"
255: #".skip 16" passes the test below,
256: # but gives an assembler error in engine
257: ;;
258: m68k)
259: machine=m68k
260: CFLAGS="$CFLAGS -fomit-frame-pointer"
261: if test "$host_os" = "nextstep3"
262: then
263: AC_LIBOBJ(termios)
264: fi
265: ;;
266: mips*)
267: machine=mips
268: #dynamic native code has the following problems on MIPS:
269: #
270: #1) J/JAL seems relocatable, but is are only
271: #relocatable within a 256MB-segment. While we try to
272: #get the linker to arrange this, there is no guarantee
273: #that this will succeed (and if the user uses a lot of
274: #memory, it is likely to fail).
275: #
276: #2) The way we generate dynamic native code may
277: #violate MIPS architectural restrictions (in
278: #particular, the delay slots of LW, MFLO, etc.)
279: #
280: #Therefore we disable dynamic native code by default:
281: if test -z $no_dynamic_default; then
282: no_dynamic_default=1
283: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
284: fi
285: ;;
286: alpha*)
287: machine=alpha
288: #full IEEE FP support for more uniformity across platforms:
289: CFLAGS="$CFLAGS -mieee"
290: ;;
291: power*|rs6000)
292: machine=power
293: $srcdir/mkinstalldirs arch/power
294: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
295: #long long is broken on (at least) gcc-2.95.* for PPC
296: test x$ac_cv_sizeof_long_long = x &&
297: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
298: ac_cv_sizeof_long_long=0
299: #The only architecture with enough callee-saved registers
300: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
301: #or use 2, hardly slower at run-time and starts up faster
302: ;;
303: *)
304: AC_MSG_WARN([Using a generic machine description])
305: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
306: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
307: machine=generic
308: #I-cache flushing would be needed for dynamic code generation
309: if test -z $no_dynamic_default; then
310: no_dynamic_default=1
311: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
312: fi
313: esac
314: AC_SUBST(host)
315:
316: MAKEINC=""
317:
318: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
319: if test x$EC_MODE = xtrue
320: then
321: echo "Check for arch/$machine/$platform/gforth.ld"
322: if test -f arch/$machine/$platform/gforth.ld
323: then
324: LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
325: if test x$platform = xnxt; then
326: LIBS="$LIB_PATH/lib/gcc/arm-elf/$($CC --version | grep GCC | cut -d' ' -f3)/interwork/libgcc.a $LIB_PATH/arm-elf/lib/interwork/libc.a $LIBS"
327: fi
328: fi
329: if test -f arch/$machine/$platform/make.inc
330: then
331: MAKEINC="include ../arch/$machine/$platform/make.inc"
332: fi
333: fi
334: AC_SUBST(MAKEINC)
335:
336: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
337:
338: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
339: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
340: [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
341: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
342: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
343: [number of registers in the default stack cache state for gforth-fast and gforth-native])
344:
345: test x$GCC_PR15242_WORKAROUND = x ||
346: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
347: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
348:
349: dnl the following macro produces a warning with autoconf-2.1
350: AC_CHECK_SIZEOF(char *)
351: case "$ac_cv_sizeof_char_p" in
352: 2)
353: wordsize=16
354: ;;
355: 4)
356: wordsize=32
357: ;;
358: 8)
359: wordsize=64
360: ;;
361: esac
362:
363: AC_CHECK_SIZEOF(void *)
364: case "$ac_cv_sizeof_void_p" in
365: 2)
366: vwordsize=16
367: ;;
368: 4)
369: vwordsize=32
370: ;;
371: 8)
372: vwordsize=64
373: ;;
374: esac
375:
376: AC_CHECK_SIZEOF(char)
377: AC_CHECK_SIZEOF(short)
378: AC_CHECK_SIZEOF(int)
379: AC_CHECK_SIZEOF(long)
380: AC_CHECK_SIZEOF(long long)
381: AC_CHECK_SIZEOF(intptr_t)
382: AC_CHECK_SIZEOF(int128_t)
383: AC_CHECK_SIZEOF(uint128_t)
384:
385: AC_MSG_CHECKING([for a C type for cells])
386: ac_cv_int_type_cell=none
387: case "$ac_cv_sizeof_char_p" in
388: $ac_cv_sizeof_int)
389: ac_cv_int_type_cell=int
390: ;;
391: $ac_cv_sizeof_short)
392: ac_cv_int_type_cell=short
393: ;;
394: $ac_cv_sizeof_char)
395: ac_cv_int_type_cell=char
396: ;;
397: $ac_cv_sizeof_long)
398: ac_cv_int_type_cell=long
399: ;;
400: $ac_cv_sizeof_long_long)
401: ac_cv_int_type_cell="long long"
402: ;;
403: $ac_cv_sizeof_intptr_t)
404: ac_cv_int_type_cell="intptr_t"
405: ;;
406: esac
407: AC_MSG_RESULT($ac_cv_int_type_cell)
408: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
409:
410: AC_MSG_CHECKING([for a C type for wydes])
411: ac_cv_wyde_type_cell=none
412: case 2 in
413: $ac_cv_sizeof_int)
414: ac_cv_wyde_type_cell=int
415: ;;
416: $ac_cv_sizeof_short)
417: ac_cv_wyde_type_cell=short
418: ;;
419: $ac_cv_sizeof_char)
420: ac_cv_wyde_type_cell=char
421: ;;
422: $ac_cv_sizeof_long)
423: ac_cv_wyde_type_cell=long
424: ;;
425: $ac_cv_sizeof_long_long)
426: ac_cv_wyde_type_cell="long long"
427: ;;
428: $ac_cv_sizeof_intptr_t)
429: ac_cv_wyde_type_cell="intptr_t"
430: ;;
431: esac
432: AC_MSG_RESULT($ac_cv_wyde_type_cell)
433: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
434:
435: AC_MSG_CHECKING([for a C type for tetrabytes])
436: ac_cv_tetrabyte_type_cell=none
437: case 4 in
438: $ac_cv_sizeof_int)
439: ac_cv_tetrabyte_type_cell=int
440: ;;
441: $ac_cv_sizeof_short)
442: ac_cv_tetrabyte_type_cell=short
443: ;;
444: $ac_cv_sizeof_char)
445: ac_cv_tetrabyte_type_cell=char
446: ;;
447: $ac_cv_sizeof_long)
448: ac_cv_tetrabyte_type_cell=long
449: ;;
450: $ac_cv_sizeof_long_long)
451: ac_cv_tetrabyte_type_cell="long long"
452: ;;
453: $ac_cv_sizeof_intptr_t)
454: ac_cv_tetrabyte_type_cell="intptr_t"
455: ;;
456: esac
457: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
458: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
459:
460: AC_MSG_CHECKING([for a C type for double-cells])
461: ac_cv_int_type_double_cell=none
462: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
463: $ac_cv_sizeof_short)
464: ac_cv_int_type_double_cell=short
465: ;;
466: $ac_cv_sizeof_int)
467: ac_cv_int_type_double_cell=int
468: ;;
469: $ac_cv_sizeof_long)
470: ac_cv_int_type_double_cell=long
471: ;;
472: $ac_cv_sizeof_long_long)
473: ac_cv_int_type_double_cell="long long"
474: ;;
475: $ac_cv_sizeof_intptr_t)
476: ac_cv_int_type_double_cell="intptr_t"
477: ;;
478: $ac_cv_sizeof_int128_t)
479: ac_cv_int_type_double_cell="int128_t"
480: ;;
481: esac
482: AC_MSG_RESULT($ac_cv_int_type_double_cell)
483:
484: AC_MSG_CHECKING([for a C type for unsigned double-cells])
485: ac_cv_int_type_double_ucell=none
486: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
487: $ac_cv_sizeof_short)
488: ac_cv_int_type_double_ucell="unsigned short"
489: ;;
490: $ac_cv_sizeof_int)
491: ac_cv_int_type_double_ucell="unsigned int"
492: ;;
493: $ac_cv_sizeof_long)
494: ac_cv_int_type_double_ucell="unsigned long"
495: ;;
496: $ac_cv_sizeof_long_long)
497: ac_cv_int_type_double_ucell="unsigned long long"
498: ;;
499: $ac_cv_sizeof_intptr_t)
500: ac_cv_int_type_double_ucell="unsigned intptr_t"
501: ;;
502: $ac_cv_sizeof_uint128_t)
503: ac_cv_int_type_double_ucell="uint128_t"
504: ;;
505: esac
506: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
507:
508: if test "$ac_cv_int_type_double_cell" != none && \
509: test "$ac_cv_int_type_double_ucell" != none
510: then
511: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
512: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
513: OPTS=-ll
514: else
515: if test "$ac_cv_sizeof_char_p" == 8; then
516: OPTS="-ll -no-ll"
517: else
518: OPTS=-noll
519: fi
520: fi
521: AC_SUBST(OPTS)
522:
523: AC_TYPE_OFF_T
524: AC_CHECK_SIZEOF(off_t)
525: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
526: ac_small_off_t=$?
527: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
528:
529: ENGINE_FLAGS=
530: AC_SUBST(ENGINE_FLAGS)
531:
532: # Try if GCC understands -fno-gcse
533:
534: AC_MSG_CHECKING([if $CC understands -fno-gcse])
535: CFLAGS_1="$CFLAGS"
536: CFLAGS="$CFLAGS -fno-gcse"
537: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
538: CFLAGS="$CFLAGS_1"
539: AC_MSG_RESULT($ac_nogcse)
540:
541: # Try if GCC understands -fno-strict-aliasing
542: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
543: CFLAGS_1="$CFLAGS"
544: CFLAGS="$CFLAGS -fno-strict-aliasing"
545: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
546: CFLAGS="$CFLAGS_1"
547: AC_MSG_RESULT($ac_nostrictaliasing)
548:
549: # Try if GCC understands -fno-crossjumping
550: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
551: CFLAGS_1="$CFLAGS"
552: CFLAGS="$CFLAGS -fno-crossjumping"
553: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
554: CFLAGS="$CFLAGS_1"
555: AC_MSG_RESULT($ac_nocrossjumping)
556:
557: # Try if GCC understands -fno-reorder-blocks
558: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
559: CFLAGS_1="$CFLAGS"
560: CFLAGS="$CFLAGS -fno-reorder-blocks"
561: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
562: CFLAGS="$CFLAGS_1"
563: AC_MSG_RESULT($ac_noreorder_blocks)
564:
565: # Try if GCC understands -falign-labels=1
566: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
567: CFLAGS_1="$CFLAGS"
568: CFLAGS="$CFLAGS -falign-labels=1"
569: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
570: CFLAGS="$CFLAGS_1"
571: AC_MSG_RESULT($ac_align_labels)
572:
573: # Try if GCC understands -falign-loops=1
574: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
575: CFLAGS_1="$CFLAGS"
576: CFLAGS="$CFLAGS -falign-loops=1"
577: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
578: CFLAGS="$CFLAGS_1"
579: AC_MSG_RESULT($ac_align_loops)
580:
581: # Try if GCC understands -falign-jumps=1
582: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
583: CFLAGS_1="$CFLAGS"
584: CFLAGS="$CFLAGS -falign-jumps=1"
585: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
586: CFLAGS="$CFLAGS_1"
587: AC_MSG_RESULT($ac_align_jumps)
588:
589: # Try if GCC understands __attribute__((unused))
590: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
591: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
592: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
593: AC_MSG_RESULT($MAYBE_UNUSED)
594:
595: #try if m4 understands -s
596: AC_MSG_CHECKING([how to invoke m4])
597: if m4 -s /dev/null >/dev/null 2>&1; then
598: M4="m4 -s"
599: else
600: M4=m4
601: fi
602: AC_SUBST(M4)
603: AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
604: AC_MSG_RESULT($M4)
605:
606: # Find installed Gforth
607: AC_MSG_CHECKING([for gforth])
608: GFORTH="`which gforth 2>/dev/null`"
609: if test ! -z "$GFORTH"; then GFORTH="$GFORTH -m4M" ; fi
610: AC_SUBST(GFORTH)
611: AC_DEFINE_UNQUOTED(GFORTH,"$GFORTH",[How to invoke gforth])
612: AC_MSG_RESULT($GFORTH)
613:
614: echo "machine='$machine'"
615:
616: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
617: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
618: AC_SUBST(asm_fs)
619:
620: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
621: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
622: AC_SUBST(disasm_fs)
623:
624: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
625:
626: case "$host_os" in
627: *win32*)
628: # !!!FIXME!!! problems with cygwin and ';' as path separator
629: DIRSEP="\\\\"
630: PATHSEP=";"
631: #we want the builtins of command.com/cmd.exe and its
632: # handling of .com files.
633: #$COMSPEC contains the name of the Windows shell;
634: # the ./ is there, because the bash does not recognize
635: # absolute DOS filenames
636: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
637: ;;
638: *darwin*)
639: #Darwin uses some funny preprocessor by default; eliminate it:
640: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
641: CFLAGS="$CFLAGS -no-cpp-precomp"
642: DIRSEP="/"
643: PATHSEP=":"
644: DEFAULTSYSTEMPREFIX=""
645: ;;
646: *)
647: DIRSEP="/"
648: PATHSEP=":"
649: DEFAULTSYSTEMPREFIX=""
650: ;;
651: esac
652: AC_SUBST(DIRSEP)
653: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
654: AC_SUBST(PATHSEP)
655: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
656: AC_SUBST(DEFAULTSYSTEMPREFIX)
657: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
658:
659: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
660: #This magic incantation seems to be completely undocumented.
661: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
662:
663: dnl Now a little support for DOS/DJGCC
664: AC_SUBST(GFORTH_EXE)
665: GFORTH_EXE=""
666: AC_SUBST(GFORTHFAST_EXE)
667: GFORTHFAST_EXE=""
668: AC_SUBST(GFORTHITC_EXE)
669: GFORTHITC_EXE=""
670: AC_SUBST(GFORTHDITC_EXE)
671: GFORTHDITC_EXE=""
672:
673: AC_SUBST(FORTHSIZES)
674:
675: dnl if test "$PEEPHOLE" = "yes"
676: dnl then
677: dnl PEEPHOLEFLAG="true"
678: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
679: dnl else
680: dnl PEEPHOLEFLAG="false"
681: dnl fi
682: PEEPHOLEFLAG="true"
683: AC_SUBST(PEEPHOLEFLAG)
684:
685: dnl copy commands for systems that don't have links
686: AC_SUBST(LINK_KERNL)
687: LINK_KERNL=""
688:
689: #if test $host_os=dos
690: #then
691: # echo Configuring for DOS!!!
692: # MAKE_EXE="coff2exe gforth"
693: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
694: #fi
695:
696: dnl the following macro produces a warning with autoconf-2.1
697: AC_C_BIGENDIAN
698: AC_SUBST(KERNEL)
699: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
700: if test $ac_cv_c_bigendian = yes; then
701: bytesex=b
702: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
703: else
704: bytesex=l
705: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
706: fi
707:
708: #check how to do asm(".skip 16")
709: #echo "CFLAGS=$CFLAGS"
710: #echo "ac_link=$ac_link"
711: AC_MSG_CHECKING([if and how we can waste code space])
712: if test -z "$skipcode"; then
713: skipcode=no
714: CFLAGS_1="$CFLAGS"
715: CFLAGS="$CFLAGS $ENGINE_FLAGS"
716: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
717: do
718: AC_TRY_RUN(
719: [int foo(int,int,int);
720: main()
721: {
722: exit(foo(0,0,0)!=16);
723: }
724: int foo(int x, int y, int z)
725: {
726: static void *labels[]={&&label1, &&label2};
727: if (x) {
728: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
729: label1:
730: asm("$i"); /* or ".space 16" or somesuch */
731: label2: ;
732: }
733: {
734: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
735: return labels[1]-labels[0];
736: }
737: }]
738: ,skipcode=$i; break
739: ,,)
740: done
741: CFLAGS=$CFLAGS_1
742: fi
743: AC_MSG_RESULT($skipcode)
744: if test "$skipcode" = no
745: then
746: if test -z $no_dynamic_default; then
747: no_dynamic_default=1
748: AC_MSG_WARN(Disabling default dynamic native code generation)
749: fi
750: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
751: else
752: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
753: fi
754:
755: AC_MSG_CHECKING([if and how we can do comments in asm statements])
756: #the point here is to get asm statements that look different to
757: #gcc's "optimizer"
758: if test -z "$asmcomment"; then
759: asmcomment=no
760: CFLAGS_1="$CFLAGS"
761: CFLAGS="$CFLAGS $ENGINE_FLAGS"
762: for i in '"# "' '"! "' '"; "'; do
763: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
764: done
765: CFLAGS=$CFLAGS_1
766: fi
767: AC_MSG_RESULT($asmcomment)
768: if test "$asmcomment" != no
769: then
770: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
771: fi
772:
773: test "$no_dynamic_default" || no_dynamic_default=0
774: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
775:
776: dnl Checks for programs.
777: AC_PROG_LN_S
778: AC_PROG_INSTALL
779: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
780:
781: dnl MacOS X has a libtool that does something else
782: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
783:
784: dnl Checks for library functions
785: dnl This check is just for making later checks link with libm.
786: dnl using sin here is no good idea since it is built-into gcc and typechecked
787: AC_CHECK_LIB(m,asin)
788: AC_CHECK_LIB(ltdl,lt_dlinit)
789: AC_CHECK_LIB(dl,dlopen)
790: dnl check for libffi 2.x
791: AC_CHECK_LIB(ffi,ffi_call)
792: if test $ac_cv_lib_ffi_ffi_call = yes
793: then
794: LIBFFIFLAG="true"
795: FFCALLFLAG="false"
796: OLDCALLFLAG="false"
797: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
798: else
799: dnl check for ffcall libraries
800: dnl unfortunately, these four calls are separated out into a library each.
801: AC_CHECK_LIB(avcall,__builtin_avcall)
802: AC_CHECK_LIB(callback,__vacall_r)
803: AC_CHECK_LIB(vacall,vacall)
804: AC_CHECK_LIB(trampoline,alloc_trampoline)
805: LIBFFIFLAG="false"
806: FFCALLFLAG="false"
807: OLDCALLFLAG="true"
808: 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])
809: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
810: fi
811: AC_SUBST(LIBFFIFLAG)
812: AC_SUBST(FFCALLFLAG)
813: AC_SUBST(OLDCALLFLAG)
814: if test "$host_os" != "nextstep3"
815: then
816: AC_FUNC_MEMCMP
817: fi
818: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
819: AC_FUNC_FSEEKO
820: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
821: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
822: AC_DECL_SYS_SIGLIST
823: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
824: AC_CHECK_FUNCS(expm1 log1p)
825: AC_REPLACE_FUNCS(rint ecvt)
826: dnl No check for select, because our replacement is no good under
827: dnl anything but DOS
828: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
829: AC_FUNC_FNMATCH
830: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
831: AC_CHECK_FUNCS(mmap sysconf getpagesize)
832: AM_PATH_LISPDIR
833:
834: kernel_fi=kernl${vwordsize}${bytesex}.fi
835: include_fi=kernl${wordsize}${bytesex}${EC}.fi
836: AC_SUBST(kernel_fi)
837: AC_SUBST(include_fi)
838:
839: #this breaks bindists
840: #dnl replace srource directory by absolute value
841: #if test $srcdir = "."; then srcdir=`pwd`
842: #fi
843:
844: AC_SUBST(machine)
845: AC_CONFIG_FILES([
846: Makefile
847: Makedist
848: gforthmi
849: vmgen
850: machpc.fs
851: envos.fs
852: engine/Makefile
853: engine/libcc.h
854: doc/version.texi
855: build-ec ])
856: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
857: chmod +x gforthmi
858: chmod +x vmgen
859: chmod +x build-ec
860: test -d kernel||mkdir kernel
861: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
862: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
863: AC_OUTPUT
864:
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