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],[0.6.2-20060527],[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: else
98: echo "defining hosted system"
99: EC_MODE="false"
100: fi
101:
102: #variables mentioned in INSTALL
103: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
104: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
105: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
106: 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)])
107:
108: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
109: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
110: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
111: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
112: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
113: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
114: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
115: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
116: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
117: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
118: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
119: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
120: AC_ARG_VAR(asmcomment, [assembler comment start string])
121: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
122:
123: #set up feature test macros, so the tests get them right:
124: # turn on all POSIX, SUSv3, and GNU features if available
125: AC_GNU_SOURCE
126: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
127:
128: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
129: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
130: dnl but not for _XOPEN_SOURCE)
131: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
132: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
133: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
134: # turn on large file support with 64-bit off_t where available
135: AC_SYS_LARGEFILE
136: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
137: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
138:
139: #currently we force direct threading this way. Eventually we should
140: #setup in the arch and engine files right
141:
142: AC_PROG_CC
143:
144: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
145:
146: AC_SUBST(CC)
147: AC_SUBST(DEBUGFLAG)
148: AC_SUBST(EC_MODE)
149:
150: #this is used to disable some (not generally essential) part of the
151: #Makefile that some makes don't grok. It would be better to test for
152: #this specific Makefile feature than the make version.
153: AC_MSG_CHECKING(make type)
154: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
155: GNUMAKE='#'
156: test "$make_type" = "GNU Make" && GNUMAKE=''
157: AC_MSG_RESULT($make_type)
158: AC_SUBST(GNUMAKE)
159:
160: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
161: OLDLDFLAGS=$LDFLAGS
162: LDFLAGS="$LDFLAGS -export-dynamic"
163: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
164: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
165: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
166: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
167: AC_MSG_RESULT($ac_export_dynamic)
168:
169: #terminology is a bit unusual here: The host is the system on which
170: #gforth will run; the system on which configure will run is the `build'
171: AC_CANONICAL_HOST
172: case "$host_cpu" in
173: arm*)
174: machine=arm
175: CFLAGS="$CFLAGS -fomit-frame-pointer"
176: if test -z $arm_cacheflush; then
177: no_dynamic_default=1
178: arm_cacheflush=arch/arm/cacheflush0
179: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
180: fi
181: AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
182: AC_LIBOBJ(../$arm_cacheflush)
183: #longer skipcodes lead to problems on ARM, and it uses
184: #only 4-byte alignment anyway
185: test "$skipcode" || skipcode="nop"
186: ;;
187: hppa*)
188: machine=hppa
189: $srcdir/mkinstalldirs arch/hppa
190: AC_LIBOBJ(../arch/hppa/cache)
191: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
192: LDFLAGS="$LDFLAGS -Xlinker -N"
193: LIBS="$LIBS -L/lib/pa1.1/"
194: ;;
195: sparc*)
196: machine=sparc
197: ;;
198: i386)
199: machine=386
200: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
201: ;;
202: i486)
203: machine=386
204: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
205: ;;
206: i*86)
207: machine=386
208: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
209: CFLAGS_1="$CFLAGS"
210: CFLAGS="$CFLAGS -march=pentium"
211: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
212: ;;
213: x86_64)
214: machine=amd64
215: ;;
216: ia64*)
217: machine=ia64
218: AC_LIBOBJ(../arch/ia64/flush_icache_block)
219: test "$skipcode" || skipcode="nop.i 0"
220: #".skip 16" passes the test below,
221: # but gives an assembler error in engine
222: ;;
223: m68k)
224: machine=m68k
225: CFLAGS="$CFLAGS -fomit-frame-pointer"
226: if test "$host_os" = "nextstep3"
227: then
228: AC_LIBOBJ(termios)
229: fi
230: ;;
231: mips*)
232: machine=mips
233: #dynamic native code has the following problems on MIPS:
234: #
235: #1) J/JAL seems relocatable, but is are only
236: #relocatable within a 256MB-segment. While we try to
237: #get the linker to arrange this, there is no guarantee
238: #that this will succeed (and if the user uses a lot of
239: #memory, it is likely to fail).
240: #
241: #2) The way we generate dynamic native code may
242: #violate MIPS architectural restrictions (in
243: #particular, the delay slots of LW, MFLO, etc.)
244: #
245: #Therefore we disable dynamic native code by default:
246: if test -z $no_dynamic_default; then
247: no_dynamic_default=1
248: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
249: fi
250: ;;
251: alpha*)
252: machine=alpha
253: #full IEEE FP support for more uniformity across platforms:
254: CFLAGS="$CFLAGS -mieee"
255: ;;
256: power*|rs6000)
257: machine=power
258: $srcdir/mkinstalldirs arch/power
259: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
260: #long long is broken on (at least) gcc-2.95.* for PPC
261: test x$ac_cv_sizeof_long_long = x &&
262: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
263: ac_cv_sizeof_long_long=0
264: ;;
265: *)
266: AC_MSG_WARN([Using a generic machine description])
267: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
268: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
269: machine=generic
270: #I-cache flushing would be needed for dynamic code generation
271: if test -z $no_dynamic_default; then
272: no_dynamic_default=1
273: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
274: fi
275: esac
276: AC_SUBST(host)
277:
278: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
279: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
280: [number of registers in the default stack cache state for gforth-fast and gforth-native])
281:
282: test x$GCC_PR15242_WORKAROUND = x ||
283: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
284: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
285:
286: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
287: dnl generation on gccs affected by PR15242])
288:
289:
290: if test "${enable_force_ll+set}" = set; then
291: ac_includes_default="$ac_includes_default
292: #include \"arch/generic/128bit.h\""
293: fi
294:
295: dnl the following macro produces a warning with autoconf-2.1
296: AC_CHECK_SIZEOF(char *)
297: case "$ac_cv_sizeof_char_p" in
298: 2)
299: wordsize=16
300: ;;
301: 4)
302: wordsize=32
303: ;;
304: 8)
305: wordsize=64
306: ;;
307: esac
308:
309: AC_CHECK_SIZEOF(char)
310: AC_CHECK_SIZEOF(short)
311: AC_CHECK_SIZEOF(int)
312: AC_CHECK_SIZEOF(long)
313: AC_CHECK_SIZEOF(long long)
314: AC_CHECK_SIZEOF(intptr_t)
315: AC_CHECK_SIZEOF(int128_t)
316: AC_CHECK_SIZEOF(uint128_t)
317:
318: AC_MSG_CHECKING([for a C type for cells])
319: ac_cv_int_type_cell=none
320: case "$ac_cv_sizeof_char_p" in
321: $ac_cv_sizeof_int)
322: ac_cv_int_type_cell=int
323: ;;
324: $ac_cv_sizeof_short)
325: ac_cv_int_type_cell=short
326: ;;
327: $ac_cv_sizeof_char)
328: ac_cv_int_type_cell=char
329: ;;
330: $ac_cv_sizeof_long)
331: ac_cv_int_type_cell=long
332: ;;
333: $ac_cv_sizeof_long_long)
334: ac_cv_int_type_cell="long long"
335: ;;
336: $ac_cv_sizeof_intptr_t)
337: ac_cv_int_type_cell="intptr_t"
338: ;;
339: $ac_cv_sizeof_int128_t)
340: ac_cv_int_type_cell="int128_t"
341: ;;
342: esac
343: AC_MSG_RESULT($ac_cv_int_type_cell)
344: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
345:
346: AC_MSG_CHECKING([for a C type for wydes])
347: ac_cv_wyde_type_cell=none
348: case 2 in
349: $ac_cv_sizeof_int)
350: ac_cv_wyde_type_cell=int
351: ;;
352: $ac_cv_sizeof_short)
353: ac_cv_wyde_type_cell=short
354: ;;
355: $ac_cv_sizeof_char)
356: ac_cv_wyde_type_cell=char
357: ;;
358: $ac_cv_sizeof_long)
359: ac_cv_wyde_type_cell=long
360: ;;
361: $ac_cv_sizeof_long_long)
362: ac_cv_wyde_type_cell="long long"
363: ;;
364: $ac_cv_sizeof_intptr_t)
365: ac_cv_wyde_type_cell="intptr_t"
366: ;;
367: $ac_cv_sizeof_int128_t)
368: ac_cv_wyde_type_cell="int128_t"
369: ;;
370: esac
371: AC_MSG_RESULT($ac_cv_wyde_type_cell)
372: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
373:
374: AC_MSG_CHECKING([for a C type for tetrabytes])
375: ac_cv_tetrabyte_type_cell=none
376: case 4 in
377: $ac_cv_sizeof_int)
378: ac_cv_tetrabyte_type_cell=int
379: ;;
380: $ac_cv_sizeof_short)
381: ac_cv_tetrabyte_type_cell=short
382: ;;
383: $ac_cv_sizeof_char)
384: ac_cv_tetrabyte_type_cell=char
385: ;;
386: $ac_cv_sizeof_long)
387: ac_cv_tetrabyte_type_cell=long
388: ;;
389: $ac_cv_sizeof_long_long)
390: ac_cv_tetrabyte_type_cell="long long"
391: ;;
392: $ac_cv_sizeof_intptr_t)
393: ac_cv_tetrabyte_type_cell="intptr_t"
394: ;;
395: $ac_cv_sizeof_int128_t)
396: ac_cv_tetrabyte_type_cell="int128_t"
397: ;;
398: esac
399: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
400: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
401:
402: AC_MSG_CHECKING([for a C type for double-cells])
403: ac_cv_int_type_double_cell=none
404: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
405: $ac_cv_sizeof_short)
406: ac_cv_int_type_double_cell=short
407: ;;
408: $ac_cv_sizeof_int)
409: ac_cv_int_type_double_cell=int
410: ;;
411: $ac_cv_sizeof_long)
412: ac_cv_int_type_double_cell=long
413: ;;
414: $ac_cv_sizeof_long_long)
415: ac_cv_int_type_double_cell="long long"
416: ;;
417: $ac_cv_sizeof_intptr_t)
418: ac_cv_int_type_double_cell="intptr_t"
419: ;;
420: $ac_cv_sizeof_int128_t)
421: ac_cv_int_type_double_cell="int128_t"
422: ;;
423: esac
424: AC_MSG_RESULT($ac_cv_int_type_double_cell)
425:
426: AC_MSG_CHECKING([for a C type for unsigned double-cells])
427: ac_cv_int_type_double_ucell=none
428: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
429: $ac_cv_sizeof_short)
430: ac_cv_int_type_double_ucell="unsigned short"
431: ;;
432: $ac_cv_sizeof_int)
433: ac_cv_int_type_double_ucell="unsigned int"
434: ;;
435: $ac_cv_sizeof_long)
436: ac_cv_int_type_double_ucell="unsigned long"
437: ;;
438: $ac_cv_sizeof_long_long)
439: ac_cv_int_type_double_ucell="unsigned long long"
440: ;;
441: $ac_cv_sizeof_intptr_t)
442: ac_cv_int_type_double_ucell="unsigned intptr_t"
443: ;;
444: $ac_cv_sizeof_uint128_t)
445: ac_cv_int_type_double_ucell="uint128_t"
446: ;;
447: esac
448: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
449:
450: if test "$ac_cv_int_type_double_cell" = none || \
451: test "$ac_cv_int_type_double_ucell" = none
452: then
453: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
454: AC_LIBOBJ(dblsub)
455: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
456: else
457: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
458: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
459: fi
460:
461: AC_TYPE_OFF_T
462: AC_CHECK_SIZEOF(off_t)
463: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
464: ac_small_off_t=$?
465: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
466:
467: ENGINE_FLAGS=
468: AC_SUBST(ENGINE_FLAGS)
469:
470: # Try if GCC understands -fno-gcse
471:
472: AC_MSG_CHECKING([if $CC understands -fno-gcse])
473: CFLAGS_1="$CFLAGS"
474: CFLAGS="$CFLAGS -fno-gcse"
475: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
476: CFLAGS="$CFLAGS_1"
477: AC_MSG_RESULT($ac_nogcse)
478:
479: # Try if GCC understands -fno-strict-aliasing
480: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
481: CFLAGS_1="$CFLAGS"
482: CFLAGS="$CFLAGS -fno-strict-aliasing"
483: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
484: CFLAGS="$CFLAGS_1"
485: AC_MSG_RESULT($ac_nostrictaliasing)
486:
487: # Try if GCC understands -fno-crossjumping
488: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
489: CFLAGS_1="$CFLAGS"
490: CFLAGS="$CFLAGS -fno-crossjumping"
491: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
492: CFLAGS="$CFLAGS_1"
493: AC_MSG_RESULT($ac_nocrossjumping)
494:
495: # Try if GCC understands -fno-reorder-blocks
496: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
497: CFLAGS_1="$CFLAGS"
498: CFLAGS="$CFLAGS -fno-reorder-blocks"
499: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
500: CFLAGS="$CFLAGS_1"
501: AC_MSG_RESULT($ac_noreorder_blocks)
502:
503: # Try if GCC understands __attribute__((unused))
504: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
505: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
506: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
507: AC_MSG_RESULT($MAYBE_UNUSED)
508:
509: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
510: AC_SUBST(asm_fs)
511:
512: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
513: AC_SUBST(disasm_fs)
514:
515: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
516:
517: case "$host_os" in
518: *win32*)
519: # !!!FIXME!!! problems with cygwin and ';' as path separator
520: DIRSEP="\\\\"
521: PATHSEP=";"
522: #we want the builtins of command.com/cmd.exe and its
523: # handling of .com files.
524: #$COMSPEC contains the name of the Windows shell;
525: # the ./ is there, because the bash does not recognize
526: # absolute DOS filenames
527: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
528: ;;
529: *darwin*)
530: #Darwin uses some funny preprocessor by default; eliminate it:
531: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
532: CFLAGS="$CFLAGS -no-cpp-precomp"
533: DIRSEP="/"
534: PATHSEP=":"
535: DEFAULTSYSTEMPREFIX=""
536: ;;
537: *)
538: DIRSEP="/"
539: PATHSEP=":"
540: DEFAULTSYSTEMPREFIX=""
541: ;;
542: esac
543: AC_SUBST(DIRSEP)
544: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
545: AC_SUBST(PATHSEP)
546: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
547: AC_SUBST(DEFAULTSYSTEMPREFIX)
548: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
549:
550: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
551: #This magic incantation seems to be completely undocumented.
552: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
553:
554: dnl Now a little support for DOS/DJGCC
555: AC_SUBST(GFORTH_EXE)
556: GFORTH_EXE=""
557: AC_SUBST(GFORTHFAST_EXE)
558: GFORTHFAST_EXE=""
559: AC_SUBST(GFORTHITC_EXE)
560: GFORTHITC_EXE=""
561: AC_SUBST(GFORTHDITC_EXE)
562: GFORTHDITC_EXE=""
563:
564: AC_SUBST(FORTHSIZES)
565:
566: dnl if test "$PEEPHOLE" = "yes"
567: dnl then
568: dnl PEEPHOLEFLAG="true"
569: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
570: dnl else
571: dnl PEEPHOLEFLAG="false"
572: dnl fi
573: PEEPHOLEFLAG="true"
574: AC_SUBST(PEEPHOLEFLAG)
575:
576: dnl copy commands for systems that don't have links
577: AC_SUBST(LINK_KERNL)
578: LINK_KERNL=""
579:
580: #if test $host_os=dos
581: #then
582: # echo Configuring for DOS!!!
583: # MAKE_EXE="coff2exe gforth"
584: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
585: #fi
586:
587: dnl the following macro produces a warning with autoconf-2.1
588: AC_C_BIGENDIAN
589: AC_SUBST(KERNEL)
590: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
591: if test $ac_cv_c_bigendian = yes; then
592: bytesex=b
593: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
594: else
595: bytesex=l
596: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
597: fi
598:
599: #check how to do asm(".skip 16")
600: #echo "CFLAGS=$CFLAGS"
601: #echo "ac_link=$ac_link"
602: AC_MSG_CHECKING([if and how we can waste code space])
603: if test -z "$skipcode"; then
604: skipcode=no
605: CFLAGS_1="$CFLAGS"
606: CFLAGS="$CFLAGS $ENGINE_FLAGS"
607: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
608: do
609: AC_TRY_RUN(
610: [int foo(int,int,int);
611: main()
612: {
613: exit(foo(0,0,0)!=16);
614: }
615: int foo(int x, int y, int z)
616: {
617: static void *labels[]={&&label1, &&label2};
618: if (x) {
619: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
620: label1:
621: asm("$i"); /* or ".space 16" or somesuch */
622: label2: ;
623: }
624: {
625: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
626: return labels[1]-labels[0];
627: }
628: }]
629: ,skipcode=$i; break
630: ,,)
631: done
632: CFLAGS=$CFLAGS_1
633: fi
634: AC_MSG_RESULT($skipcode)
635: if test "$skipcode" = no
636: then
637: if test -z $no_dynamic_default; then
638: no_dynamic_default=1
639: AC_MSG_WARN(Disabling default dynamic native code generation)
640: fi
641: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
642: else
643: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
644: fi
645:
646: AC_MSG_CHECKING([if and how we can do comments in asm statements])
647: #the point here is to get asm statements that look different to
648: #gcc's "optimizer"
649: if test -z "$asmcomment"; then
650: asmcomment=no
651: CFLAGS_1="$CFLAGS"
652: CFLAGS="$CFLAGS $ENGINE_FLAGS"
653: for i in '"# "' '"! "' '"; "'; do
654: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
655: done
656: CFLAGS=$CFLAGS_1
657: fi
658: AC_MSG_RESULT($asmcomment)
659: if test "$asmcomment" != no
660: then
661: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
662: fi
663:
664: test "$no_dynamic_default" || no_dynamic_default=0
665: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
666:
667: dnl Checks for programs.
668: AC_PROG_LN_S
669: AC_PROG_INSTALL
670: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
671:
672: dnl Checks for library functions
673: dnl This check is just for making later checks link with libm.
674: dnl using sin here is no good idea since it is built-into gcc and typechecked
675: AC_CHECK_LIB(m,asin)
676: AC_CHECK_LIB(dl,dlopen)
677: dnl check for libffi 2.x
678: AC_CHECK_LIB(ffi,ffi_call)
679: if test $ac_cv_lib_ffi_ffi_call = yes
680: then
681: LIBFFIFLAG="true"
682: FFCALLFLAG="false"
683: OLDCALLFLAG="false"
684: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
685: else
686: dnl check for ffcall libraries
687: dnl unfortunately, these four calls are separated out into a library each.
688: AC_CHECK_LIB(avcall,__builtin_avcall)
689: AC_CHECK_LIB(callback,__vacall_r)
690: AC_CHECK_LIB(vacall,vacall)
691: AC_CHECK_LIB(trampoline,alloc_trampoline)
692: LIBFFIFLAG="false"
693: FFCALLFLAG="false"
694: OLDCALLFLAG="true"
695: 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])
696: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
697: fi
698: AC_SUBST(LIBFFIFLAG)
699: AC_SUBST(FFCALLFLAG)
700: AC_SUBST(OLDCALLFLAG)
701: if test "$host_os" != "nextstep3"
702: then
703: AC_FUNC_MEMCMP
704: fi
705: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
706: AC_FUNC_FSEEKO
707: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
708: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
709: AC_DECL_SYS_SIGLIST
710: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
711: AC_CHECK_FUNCS(expm1 log1p)
712: AC_REPLACE_FUNCS(rint ecvt)
713: dnl No check for select, because our replacement is no good under
714: dnl anything but DOS
715: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
716: AC_FUNC_FNMATCH
717: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
718: AC_CHECK_FUNCS(mmap sysconf getpagesize)
719: AM_PATH_LISPDIR
720:
721: kernel_fi=kernl${wordsize}${bytesex}.fi
722: AC_SUBST(kernel_fi)
723:
724: #this breaks bindists
725: #dnl replace srource directory by absolute value
726: #if test $srcdir = "."; then srcdir=`pwd`
727: #fi
728:
729: AC_SUBST(machine)
730: AC_CONFIG_FILES([
731: Makefile
732: Makedist
733: gforthmi
734: vmgen
735: machpc.fs
736: envos.fs
737: engine/Makefile
738: doc/version.texi
739: build-ec ])
740: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
741: chmod +x gforthmi
742: chmod +x vmgen
743: chmod +x build-ec
744: test -d kernel||mkdir kernel]],[[]])
745: AC_OUTPUT
746:
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