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 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 2
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, write to the Free Software
19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21:
22: dnl We use some automake macros here,
23: dnl but don't use automake for creating Makefile.in
24: AC_INIT([gforth],[0.6.9-20070401],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
25: AC_PREREQ(2.54)
26: #snapshots have numbers major.minor.release-YYYYMMDD
27: #note that lexicographic ordering must be heeded.
28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
29: UPDATED="April 09, 2006"
30: AC_SUBST(UPDATED)
31: AC_CONFIG_HEADERS(engine/config.h)
32:
33: #suppress the "-g -O2" default
34: test "$CFLAGS" || CFLAGS=-O2
35:
36: AC_ARG_ENABLE(force-reg,
37: AC_HELP_STRING([--enable-force-reg],
38: [ Use explicit register declarations if they appear in
39: the machine.h file. This can cause a good speedup,
40: but also incorrect code with some gcc versions on
41: some processors (default disabled).]),
42: ,enable_force_reg=no)
43: test "$enable_force_reg" = "no"||
44: 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)])
45:
46: AC_ARG_ENABLE(force-ll,
47: AC_HELP_STRING([--enable-force-ll],
48: [ Use explicit long long declarations if they appear in
49: the machine.h file. This can cause a good speedup,
50: but also incorrect code with some gcc versions on
51: some processors (default disabled).]),
52: ,enable_force_ll=no)
53: test "$enable_force_ll" = "no"||
54: AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
55:
56: AC_ARG_ENABLE(force-cdiv,
57: AC_HELP_STRING([--enable-force-cdiv],
58: [ Use the native C division - symmetric - instead of
59: floored division (default disabled).]),
60: ,enable_force_cdiv=no)
61: test "$enable_force_cdiv" = "no"||
62: AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
63:
64: AC_SUBST(PROFEXES)
65: AC_SUBST(PROFOBJS)
66: AC_ARG_ENABLE(prof,
67: AC_HELP_STRING([--enable-prof],
68: [ Build gforth-prof, which outputs frequently occuring
69: sequences of primitives.]),
70: ,enable_prof=no)
71: if test "$enable_prof" = "no"; then
72: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
73: fi
74:
75: AC_ARG_WITH(debug,
76: [ --with-debug specifies option -g to compile with debug info
77: --without-debug omits the -g switch and creates smaller images on
78: machines where "strip" has problems with gcc style
79: debugging informations.],
80: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
81:
82: dnl PEEPHOLE="yes"
83: dnl AC_ARG_WITH(peephole,
84: dnl [ --with-peephole Enable peephole optimization (default)
85: dnl --without-peephole disables peephole optimization. Creates smaller,
86: dnl but slower images.],
87: dnl PEEPHOLE="$withval")
88:
89: AC_ARG_ENABLE(ec,
90: AC_HELP_STRING([--enable-ec],
91: [ Build gforth for systems without OS.]),
92: ,enable_ec=no)
93: if test "$enable_ec" = "yes"; then
94: echo "defining standalone system"
95: AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
96: EC_MODE="true"
97: EC="-ec"
98: engine2=""
99: engine_fast2=""
100: no_dynamic="-DNO_DYNAMIC"
101: image_i="image.i"
102: signals_o=""
103: else
104: echo "defining hosted system"
105: EC_MODE="false"
106: EC=""
107: engine2="engine2.o"
108: engine_fast2="engine-fast2.o"
109: no_dynamic=""
110: image_i=""
111: signals_o="signals.o"
112: fi
113:
114: #variables mentioned in INSTALL
115: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
116: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
117: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
118: 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)])
119:
120: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
121: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
122: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
123: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
124: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
125: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
126: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
127: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
128: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
129: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
130: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
131: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
132: AC_ARG_VAR(asmcomment, [assembler comment start string])
133: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
134:
135: #set up feature test macros, so the tests get them right:
136: # turn on all POSIX, SUSv3, and GNU features if available
137: AC_GNU_SOURCE
138: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
139:
140: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
141: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
142: dnl but not for _XOPEN_SOURCE)
143: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
144: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
145: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
146: # turn on large file support with 64-bit off_t where available
147: AC_SYS_LARGEFILE
148: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
149: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
150:
151: #currently we force direct threading this way. Eventually we should
152: #setup in the arch and engine files right
153:
154: AC_PROG_CC
155:
156: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
157:
158: AC_SUBST(CC)
159: AC_SUBST(DEBUGFLAG)
160: AC_SUBST(EC)
161: AC_SUBST(EC_MODE)
162: AC_SUBST(engine2)
163: AC_SUBST(engine_fast2)
164: AC_SUBST(no_dynamic)
165: AC_SUBST(image_i)
166: AC_SUBST(signals_o)
167:
168: #this is used to disable some (not generally essential) part of the
169: #Makefile that some makes don't grok. It would be better to test for
170: #this specific Makefile feature than the make version.
171: AC_MSG_CHECKING(make type)
172: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
173: GNUMAKE='#'
174: test "$make_type" = "GNU Make" && GNUMAKE=''
175: AC_MSG_RESULT($make_type)
176: AC_SUBST(GNUMAKE)
177:
178: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
179: OLDLDFLAGS=$LDFLAGS
180: LDFLAGS="$LDFLAGS -export-dynamic"
181: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
182: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
183: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
184: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
185: AC_MSG_RESULT($ac_export_dynamic)
186:
187: #terminology is a bit unusual here: The host is the system on which
188: #gforth will run; the system on which configure will run is the `build'
189: AC_CANONICAL_HOST
190: case "$host_cpu" in
191: arm*)
192: machine=arm
193: CFLAGS="$CFLAGS -fomit-frame-pointer"
194: if test -z $arm_cacheflush; then
195: no_dynamic_default=1
196: arm_cacheflush=arch/arm/cacheflush0
197: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
198: fi
199: AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
200: AC_LIBOBJ(../$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 -fforce-mem"
219: ;;
220: i486)
221: machine=386
222: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
223: ;;
224: i*86)
225: machine=386
226: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
227: CFLAGS_1="$CFLAGS"
228: CFLAGS="$CFLAGS -march=pentium"
229: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
230: ;;
231: x86_64)
232: machine=amd64
233: ;;
234: ia64*)
235: machine=ia64
236: AC_LIBOBJ(../arch/ia64/flush_icache_block)
237: test "$skipcode" || skipcode="nop.i 0"
238: #".skip 16" passes the test below,
239: # but gives an assembler error in engine
240: ;;
241: m68k)
242: machine=m68k
243: CFLAGS="$CFLAGS -fomit-frame-pointer"
244: if test "$host_os" = "nextstep3"
245: then
246: AC_LIBOBJ(termios)
247: fi
248: ;;
249: mips*)
250: machine=mips
251: #dynamic native code has the following problems on MIPS:
252: #
253: #1) J/JAL seems relocatable, but is are only
254: #relocatable within a 256MB-segment. While we try to
255: #get the linker to arrange this, there is no guarantee
256: #that this will succeed (and if the user uses a lot of
257: #memory, it is likely to fail).
258: #
259: #2) The way we generate dynamic native code may
260: #violate MIPS architectural restrictions (in
261: #particular, the delay slots of LW, MFLO, etc.)
262: #
263: #Therefore we disable dynamic native code by default:
264: if test -z $no_dynamic_default; then
265: no_dynamic_default=1
266: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
267: fi
268: ;;
269: alpha*)
270: machine=alpha
271: #full IEEE FP support for more uniformity across platforms:
272: CFLAGS="$CFLAGS -mieee"
273: ;;
274: power*|rs6000)
275: machine=power
276: $srcdir/mkinstalldirs arch/power
277: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
278: #long long is broken on (at least) gcc-2.95.* for PPC
279: test x$ac_cv_sizeof_long_long = x &&
280: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
281: ac_cv_sizeof_long_long=0
282: ;;
283: *)
284: AC_MSG_WARN([Using a generic machine description])
285: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
286: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
287: machine=generic
288: #I-cache flushing would be needed for dynamic code generation
289: if test -z $no_dynamic_default; then
290: no_dynamic_default=1
291: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
292: fi
293: esac
294: AC_SUBST(host)
295:
296: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
297: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
298: [number of registers in the default stack cache state for gforth-fast and gforth-native])
299:
300: test x$GCC_PR15242_WORKAROUND = x ||
301: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
302: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
303:
304: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
305: dnl generation on gccs affected by PR15242])
306:
307:
308: if test "${enable_force_ll+set}" = set; then
309: ac_includes_default="$ac_includes_default
310: #include \"arch/generic/128bit.h\""
311: fi
312:
313: dnl the following macro produces a warning with autoconf-2.1
314: AC_CHECK_SIZEOF(char *)
315: case "$ac_cv_sizeof_char_p" in
316: 2)
317: wordsize=16
318: ;;
319: 4)
320: wordsize=32
321: ;;
322: 8)
323: wordsize=64
324: ;;
325: esac
326:
327: AC_CHECK_SIZEOF(char)
328: AC_CHECK_SIZEOF(short)
329: AC_CHECK_SIZEOF(int)
330: AC_CHECK_SIZEOF(long)
331: AC_CHECK_SIZEOF(long long)
332: AC_CHECK_SIZEOF(intptr_t)
333: AC_CHECK_SIZEOF(int128_t)
334: AC_CHECK_SIZEOF(uint128_t)
335:
336: AC_MSG_CHECKING([for a C type for cells])
337: ac_cv_int_type_cell=none
338: case "$ac_cv_sizeof_char_p" in
339: $ac_cv_sizeof_int)
340: ac_cv_int_type_cell=int
341: ;;
342: $ac_cv_sizeof_short)
343: ac_cv_int_type_cell=short
344: ;;
345: $ac_cv_sizeof_char)
346: ac_cv_int_type_cell=char
347: ;;
348: $ac_cv_sizeof_long)
349: ac_cv_int_type_cell=long
350: ;;
351: $ac_cv_sizeof_long_long)
352: ac_cv_int_type_cell="long long"
353: ;;
354: $ac_cv_sizeof_intptr_t)
355: ac_cv_int_type_cell="intptr_t"
356: ;;
357: $ac_cv_sizeof_int128_t)
358: ac_cv_int_type_cell="int128_t"
359: ;;
360: esac
361: AC_MSG_RESULT($ac_cv_int_type_cell)
362: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
363:
364: AC_MSG_CHECKING([for a C type for wydes])
365: ac_cv_wyde_type_cell=none
366: case 2 in
367: $ac_cv_sizeof_int)
368: ac_cv_wyde_type_cell=int
369: ;;
370: $ac_cv_sizeof_short)
371: ac_cv_wyde_type_cell=short
372: ;;
373: $ac_cv_sizeof_char)
374: ac_cv_wyde_type_cell=char
375: ;;
376: $ac_cv_sizeof_long)
377: ac_cv_wyde_type_cell=long
378: ;;
379: $ac_cv_sizeof_long_long)
380: ac_cv_wyde_type_cell="long long"
381: ;;
382: $ac_cv_sizeof_intptr_t)
383: ac_cv_wyde_type_cell="intptr_t"
384: ;;
385: $ac_cv_sizeof_int128_t)
386: ac_cv_wyde_type_cell="int128_t"
387: ;;
388: esac
389: AC_MSG_RESULT($ac_cv_wyde_type_cell)
390: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
391:
392: AC_MSG_CHECKING([for a C type for tetrabytes])
393: ac_cv_tetrabyte_type_cell=none
394: case 4 in
395: $ac_cv_sizeof_int)
396: ac_cv_tetrabyte_type_cell=int
397: ;;
398: $ac_cv_sizeof_short)
399: ac_cv_tetrabyte_type_cell=short
400: ;;
401: $ac_cv_sizeof_char)
402: ac_cv_tetrabyte_type_cell=char
403: ;;
404: $ac_cv_sizeof_long)
405: ac_cv_tetrabyte_type_cell=long
406: ;;
407: $ac_cv_sizeof_long_long)
408: ac_cv_tetrabyte_type_cell="long long"
409: ;;
410: $ac_cv_sizeof_intptr_t)
411: ac_cv_tetrabyte_type_cell="intptr_t"
412: ;;
413: $ac_cv_sizeof_int128_t)
414: ac_cv_tetrabyte_type_cell="int128_t"
415: ;;
416: esac
417: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
418: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
419:
420: AC_MSG_CHECKING([for a C type for double-cells])
421: ac_cv_int_type_double_cell=none
422: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
423: $ac_cv_sizeof_short)
424: ac_cv_int_type_double_cell=short
425: ;;
426: $ac_cv_sizeof_int)
427: ac_cv_int_type_double_cell=int
428: ;;
429: $ac_cv_sizeof_long)
430: ac_cv_int_type_double_cell=long
431: ;;
432: $ac_cv_sizeof_long_long)
433: ac_cv_int_type_double_cell="long long"
434: ;;
435: $ac_cv_sizeof_intptr_t)
436: ac_cv_int_type_double_cell="intptr_t"
437: ;;
438: $ac_cv_sizeof_int128_t)
439: ac_cv_int_type_double_cell="int128_t"
440: ;;
441: esac
442: AC_MSG_RESULT($ac_cv_int_type_double_cell)
443:
444: AC_MSG_CHECKING([for a C type for unsigned double-cells])
445: ac_cv_int_type_double_ucell=none
446: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
447: $ac_cv_sizeof_short)
448: ac_cv_int_type_double_ucell="unsigned short"
449: ;;
450: $ac_cv_sizeof_int)
451: ac_cv_int_type_double_ucell="unsigned int"
452: ;;
453: $ac_cv_sizeof_long)
454: ac_cv_int_type_double_ucell="unsigned long"
455: ;;
456: $ac_cv_sizeof_long_long)
457: ac_cv_int_type_double_ucell="unsigned long long"
458: ;;
459: $ac_cv_sizeof_intptr_t)
460: ac_cv_int_type_double_ucell="unsigned intptr_t"
461: ;;
462: $ac_cv_sizeof_uint128_t)
463: ac_cv_int_type_double_ucell="uint128_t"
464: ;;
465: esac
466: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
467:
468: if test "$ac_cv_int_type_double_cell" = none || \
469: test "$ac_cv_int_type_double_ucell" = none
470: then
471: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
472: AC_LIBOBJ(dblsub)
473: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
474: else
475: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
476: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
477: fi
478:
479: AC_TYPE_OFF_T
480: AC_CHECK_SIZEOF(off_t)
481: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
482: ac_small_off_t=$?
483: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
484:
485: ENGINE_FLAGS=
486: AC_SUBST(ENGINE_FLAGS)
487:
488: # Try if GCC understands -fno-gcse
489:
490: AC_MSG_CHECKING([if $CC understands -fno-gcse])
491: CFLAGS_1="$CFLAGS"
492: CFLAGS="$CFLAGS -fno-gcse"
493: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
494: CFLAGS="$CFLAGS_1"
495: AC_MSG_RESULT($ac_nogcse)
496:
497: # Try if GCC understands -fno-strict-aliasing
498: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
499: CFLAGS_1="$CFLAGS"
500: CFLAGS="$CFLAGS -fno-strict-aliasing"
501: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
502: CFLAGS="$CFLAGS_1"
503: AC_MSG_RESULT($ac_nostrictaliasing)
504:
505: # Try if GCC understands -fno-crossjumping
506: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
507: CFLAGS_1="$CFLAGS"
508: CFLAGS="$CFLAGS -fno-crossjumping"
509: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
510: CFLAGS="$CFLAGS_1"
511: AC_MSG_RESULT($ac_nocrossjumping)
512:
513: # Try if GCC understands -fno-reorder-blocks
514: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
515: CFLAGS_1="$CFLAGS"
516: CFLAGS="$CFLAGS -fno-reorder-blocks"
517: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
518: CFLAGS="$CFLAGS_1"
519: AC_MSG_RESULT($ac_noreorder_blocks)
520:
521: # Try if GCC understands __attribute__((unused))
522: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
523: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
524: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
525: AC_MSG_RESULT($MAYBE_UNUSED)
526:
527: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
528: AC_SUBST(asm_fs)
529:
530: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
531: AC_SUBST(disasm_fs)
532:
533: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
534:
535: case "$host_os" in
536: *win32*)
537: # !!!FIXME!!! problems with cygwin and ';' as path separator
538: DIRSEP="\\\\"
539: PATHSEP=";"
540: #we want the builtins of command.com/cmd.exe and its
541: # handling of .com files.
542: #$COMSPEC contains the name of the Windows shell;
543: # the ./ is there, because the bash does not recognize
544: # absolute DOS filenames
545: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
546: ;;
547: *darwin*)
548: #Darwin uses some funny preprocessor by default; eliminate it:
549: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
550: CFLAGS="$CFLAGS -no-cpp-precomp"
551: DIRSEP="/"
552: PATHSEP=":"
553: DEFAULTSYSTEMPREFIX=""
554: ;;
555: *)
556: DIRSEP="/"
557: PATHSEP=":"
558: DEFAULTSYSTEMPREFIX=""
559: ;;
560: esac
561: AC_SUBST(DIRSEP)
562: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
563: AC_SUBST(PATHSEP)
564: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
565: AC_SUBST(DEFAULTSYSTEMPREFIX)
566: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
567:
568: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
569: #This magic incantation seems to be completely undocumented.
570: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
571:
572: dnl Now a little support for DOS/DJGCC
573: AC_SUBST(GFORTH_EXE)
574: GFORTH_EXE=""
575: AC_SUBST(GFORTHFAST_EXE)
576: GFORTHFAST_EXE=""
577: AC_SUBST(GFORTHITC_EXE)
578: GFORTHITC_EXE=""
579: AC_SUBST(GFORTHDITC_EXE)
580: GFORTHDITC_EXE=""
581:
582: AC_SUBST(FORTHSIZES)
583:
584: dnl if test "$PEEPHOLE" = "yes"
585: dnl then
586: dnl PEEPHOLEFLAG="true"
587: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
588: dnl else
589: dnl PEEPHOLEFLAG="false"
590: dnl fi
591: PEEPHOLEFLAG="true"
592: AC_SUBST(PEEPHOLEFLAG)
593:
594: dnl copy commands for systems that don't have links
595: AC_SUBST(LINK_KERNL)
596: LINK_KERNL=""
597:
598: #if test $host_os=dos
599: #then
600: # echo Configuring for DOS!!!
601: # MAKE_EXE="coff2exe gforth"
602: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
603: #fi
604:
605: dnl the following macro produces a warning with autoconf-2.1
606: AC_C_BIGENDIAN
607: AC_SUBST(KERNEL)
608: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
609: if test $ac_cv_c_bigendian = yes; then
610: bytesex=b
611: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
612: else
613: bytesex=l
614: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
615: fi
616:
617: #check how to do asm(".skip 16")
618: #echo "CFLAGS=$CFLAGS"
619: #echo "ac_link=$ac_link"
620: AC_MSG_CHECKING([if and how we can waste code space])
621: if test -z "$skipcode"; then
622: skipcode=no
623: CFLAGS_1="$CFLAGS"
624: CFLAGS="$CFLAGS $ENGINE_FLAGS"
625: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
626: do
627: AC_TRY_RUN(
628: [int foo(int,int,int);
629: main()
630: {
631: exit(foo(0,0,0)!=16);
632: }
633: int foo(int x, int y, int z)
634: {
635: static void *labels[]={&&label1, &&label2};
636: if (x) {
637: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
638: label1:
639: asm("$i"); /* or ".space 16" or somesuch */
640: label2: ;
641: }
642: {
643: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
644: return labels[1]-labels[0];
645: }
646: }]
647: ,skipcode=$i; break
648: ,,)
649: done
650: CFLAGS=$CFLAGS_1
651: fi
652: AC_MSG_RESULT($skipcode)
653: if test "$skipcode" = no
654: then
655: if test -z $no_dynamic_default; then
656: no_dynamic_default=1
657: AC_MSG_WARN(Disabling default dynamic native code generation)
658: fi
659: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
660: else
661: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
662: fi
663:
664: AC_MSG_CHECKING([if and how we can do comments in asm statements])
665: #the point here is to get asm statements that look different to
666: #gcc's "optimizer"
667: if test -z "$asmcomment"; then
668: asmcomment=no
669: CFLAGS_1="$CFLAGS"
670: CFLAGS="$CFLAGS $ENGINE_FLAGS"
671: for i in '"# "' '"! "' '"; "'; do
672: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
673: done
674: CFLAGS=$CFLAGS_1
675: fi
676: AC_MSG_RESULT($asmcomment)
677: if test "$asmcomment" != no
678: then
679: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
680: fi
681:
682: test "$no_dynamic_default" || no_dynamic_default=0
683: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
684:
685: dnl Checks for programs.
686: AC_PROG_LN_S
687: AC_PROG_INSTALL
688: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
689:
690: dnl Checks for library functions
691: dnl This check is just for making later checks link with libm.
692: dnl using sin here is no good idea since it is built-into gcc and typechecked
693: AC_CHECK_LIB(m,asin)
694: AC_CHECK_LIB(dl,dlopen)
695: dnl check for libffi 2.x
696: AC_CHECK_LIB(ffi,ffi_call)
697: if test $ac_cv_lib_ffi_ffi_call = yes
698: then
699: LIBFFIFLAG="true"
700: FFCALLFLAG="false"
701: OLDCALLFLAG="false"
702: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
703: else
704: dnl check for ffcall libraries
705: dnl unfortunately, these four calls are separated out into a library each.
706: AC_CHECK_LIB(avcall,__builtin_avcall)
707: AC_CHECK_LIB(callback,__vacall_r)
708: AC_CHECK_LIB(vacall,vacall)
709: AC_CHECK_LIB(trampoline,alloc_trampoline)
710: LIBFFIFLAG="false"
711: FFCALLFLAG="false"
712: OLDCALLFLAG="true"
713: 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])
714: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
715: fi
716: AC_SUBST(LIBFFIFLAG)
717: AC_SUBST(FFCALLFLAG)
718: AC_SUBST(OLDCALLFLAG)
719: if test "$host_os" != "nextstep3"
720: then
721: AC_FUNC_MEMCMP
722: fi
723: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
724: AC_FUNC_FSEEKO
725: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
726: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
727: AC_DECL_SYS_SIGLIST
728: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
729: AC_CHECK_FUNCS(expm1 log1p)
730: AC_REPLACE_FUNCS(rint ecvt)
731: dnl No check for select, because our replacement is no good under
732: dnl anything but DOS
733: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
734: AC_FUNC_FNMATCH
735: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
736: AC_CHECK_FUNCS(mmap sysconf getpagesize)
737: AM_PATH_LISPDIR
738:
739: kernel_fi=kernl${wordsize}${bytesex}.fi
740: include_fi=kernl${wordsize}${bytesex}${EC}.fi
741: AC_SUBST(kernel_fi)
742: AC_SUBST(include_fi)
743:
744: #this breaks bindists
745: #dnl replace srource directory by absolute value
746: #if test $srcdir = "."; then srcdir=`pwd`
747: #fi
748:
749: AC_SUBST(machine)
750: AC_CONFIG_FILES([
751: Makefile
752: Makedist
753: gforthmi
754: vmgen
755: machpc.fs
756: envos.fs
757: engine/Makefile
758: doc/version.texi
759: build-ec ])
760: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
761: chmod +x gforthmi
762: chmod +x vmgen
763: chmod +x build-ec
764: test -d kernel||mkdir kernel]],[[]])
765: AC_OUTPUT
766:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>