1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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],[0.6.2-20030910],[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="September 10, 2003"
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 "$enable_force_ll" = "no"||
54: AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
55:
56: AC_ARG_ENABLE(gcc-pr15242-workaround,
57: AC_HELP_STRING([--disable-gcc-pr15242-workaround],[Disables
58: dynamic code generation on some versions of gcc
59: (slowdown~2 on Athlon) and causes slower building
60: of gforth (but gforth speedups) on others.
61: (default enabled)]),
62: ,enable_gcc_pr15242_workaround=yes)
63: test "$enable_gcc_pr15242_workaround" = "no"||
64: AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
65: generation on gccs affected by PR15242])
66:
67: AC_SUBST(PROFEXES)
68: AC_SUBST(PROFOBJS)
69: AC_ARG_ENABLE(prof,
70: AC_HELP_STRING([--enable-prof],
71: [ Build gforth-prof, which outputs frequently occuring
72: sequences of primitives.]),
73: ,enable_prof=no)
74: if test "$enable_prof" = "no"; then
75: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
76: fi
77:
78: AC_ARG_WITH(debug,
79: [ --with-debug specifies option -g to compile with debug info
80: --without-debug omits the -g switch and creates smaller images on
81: machines where "strip" has problems with gcc style
82: debugging informations.],
83: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
84:
85: dnl PEEPHOLE="yes"
86: dnl AC_ARG_WITH(peephole,
87: dnl [ --with-peephole Enable peephole optimization (default)
88: dnl --without-peephole disables peephole optimization. Creates smaller,
89: dnl but slower images.],
90: dnl PEEPHOLE="$withval")
91:
92: #variables mentioned in INSTALL
93: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
94: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
95: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
96: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
97: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
98: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
99: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
100: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
101: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
102: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
103: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
104: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
105: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
106: AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
107:
108: #set up feature test macros, so the tests get them right:
109: # turn on all POSIX, SUSv3, and GNU features if available
110: AC_GNU_SOURCE
111: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
112:
113: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
114: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
115: dnl but not for _XOPEN_SOURCE)
116: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
117: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
118: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
119: # turn on large file support with 64-bit off_t where available
120: AC_SYS_LARGEFILE
121: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
122: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
123:
124: #currently we force direct threading this way. Eventually we should
125: #setup in the arch and engine files right
126:
127: AC_PROG_CC
128:
129: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
130:
131: AC_SUBST(CC)
132: AC_SUBST(DEBUGFLAG)
133:
134: AC_MSG_CHECKING(make type)
135: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
136:
137: GNUMAKE='#'
138: test "$make_type" = "GNU Make" && GNUMAKE=''
139:
140: AC_MSG_RESULT($make_type)
141:
142: AC_SUBST(GNUMAKE)
143:
144: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
145: OLDLDFLAGS=$LDFLAGS
146: LDFLAGS="$LDFLAGS -export-dynamic"
147: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
148: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
149: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
150: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
151: AC_MSG_RESULT($ac_export_dynamic)
152:
153: #terminology is a bit unusual here: The host is the system on which
154: #gforth will run; the system on which configure will run is the `build'
155: AC_CANONICAL_HOST
156: case "$host_cpu" in
157: arm*)
158: machine=arm
159: CFLAGS="$CFLAGS -fomit-frame-pointer"
160: if test -z $no_dynamic_default; then
161: no_dynamic_default=1
162: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
163: fi
164: ;;
165: hppa*)
166: machine=hppa
167: $srcdir/mkinstalldirs arch/hppa
168: AC_LIBOBJ(../arch/hppa/cache)
169: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
170: LDFLAGS="$LDFLAGS -Xlinker -N"
171: LIBS="$LIBS -L/lib/pa1.1/"
172: ;;
173: sparc*)
174: machine=sparc
175: ;;
176: i386)
177: machine=386
178: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
179: ;;
180: i486)
181: machine=386
182: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
183: ;;
184: i*86)
185: machine=386
186: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
187: CFLAGS_1="$CFLAGS"
188: CFLAGS="$CFLAGS -march=pentium"
189: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
190: ;;
191: x86_64)
192: machine=amd64
193: ;;
194: ia64*)
195: machine=ia64
196: AC_LIBOBJ(../arch/ia64/flush_icache_block)
197: test "$skipcode" || skipcode="nop.i 0"
198: #".skip 16" passes the test below,
199: # but gives an assembler error in engine
200: ;;
201: m68k)
202: machine=m68k
203: CFLAGS="$CFLAGS -fomit-frame-pointer"
204: if test "$host_os" = "nextstep3"
205: then
206: AC_LIBOBJ(termios)
207: fi
208: ;;
209: mips*)
210: machine=mips
211: #dynamic native code has the following problems on MIPS:
212: #
213: #1) J/JAL seems relocatable, but is are only
214: #relocatable within a 256MB-segment. While we try to
215: #get the linker to arrange this, there is no guarantee
216: #that this will succeed (and if the user uses a lot of
217: #memory, it is likely to fail).
218: #
219: #2) The way we generate dynamic native code may
220: #violate MIPS architectural restrictions (in
221: #particular, the delay slots of LW, MFLO, etc.)
222: #
223: #Therefore we disable dynamic native code by default:
224: if test -z $no_dynamic_default; then
225: no_dynamic_default=1
226: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
227: fi
228: ;;
229: alpha*)
230: machine=alpha
231: #full IEEE FP support for more uniformity across platforms:
232: CFLAGS="$CFLAGS -mieee"
233: ;;
234: power*|rs6000)
235: machine=power
236: $srcdir/mkinstalldirs arch/power
237: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
238: #long long is broken on (at least) gcc-2.95.* for PPC
239: test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
240: ;;
241: *)
242: AC_MSG_WARN([Using a generic machine description])
243: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
244: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
245: machine=generic
246: #I-cache flushing would be needed for dynamic code generation
247: if test -z $no_dynamic_default; then
248: no_dynamic_default=1
249: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
250: fi
251: esac
252: AC_SUBST(host)
253:
254: if test "${enable_force_ll+set}" = set; then
255: ac_includes_default="$ac_includes_default
256: #include \"arch/generic/128bit.h\""
257: fi
258:
259: dnl the following macro produces a warning with autoconf-2.1
260: AC_CHECK_SIZEOF(char *)
261: case "$ac_cv_sizeof_char_p" in
262: 2)
263: wordsize=16
264: ;;
265: 4)
266: wordsize=32
267: ;;
268: 8)
269: wordsize=64
270: ;;
271: esac
272:
273: AC_CHECK_SIZEOF(char)
274: AC_CHECK_SIZEOF(short)
275: AC_CHECK_SIZEOF(int)
276: AC_CHECK_SIZEOF(long)
277: AC_CHECK_SIZEOF(long long)
278: AC_CHECK_SIZEOF(intptr_t)
279: AC_CHECK_SIZEOF(int128_t)
280: AC_CHECK_SIZEOF(uint128_t)
281:
282: AC_MSG_CHECKING([for a C type for cells])
283: ac_cv_int_type_cell=none
284: case "$ac_cv_sizeof_char_p" in
285: $ac_cv_sizeof_int)
286: ac_cv_int_type_cell=int
287: ;;
288: $ac_cv_sizeof_short)
289: ac_cv_int_type_cell=short
290: ;;
291: $ac_cv_sizeof_char)
292: ac_cv_int_type_cell=char
293: ;;
294: $ac_cv_sizeof_long)
295: ac_cv_int_type_cell=long
296: ;;
297: $ac_cv_sizeof_long_long)
298: ac_cv_int_type_cell="long long"
299: ;;
300: $ac_cv_sizeof_intptr_t)
301: ac_cv_int_type_cell="intptr_t"
302: ;;
303: $ac_cv_sizeof_int128_t)
304: ac_cv_int_type_cell="int128_t"
305: ;;
306: esac
307: AC_MSG_RESULT($ac_cv_int_type_cell)
308: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
309:
310: AC_MSG_CHECKING([for a C type for double-cells])
311: ac_cv_int_type_double_cell=none
312: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
313: $ac_cv_sizeof_short)
314: ac_cv_int_type_double_cell=short
315: ;;
316: $ac_cv_sizeof_int)
317: ac_cv_int_type_double_cell=int
318: ;;
319: $ac_cv_sizeof_long)
320: ac_cv_int_type_double_cell=long
321: ;;
322: $ac_cv_sizeof_long_long)
323: ac_cv_int_type_double_cell="long long"
324: ;;
325: $ac_cv_sizeof_intptr_t)
326: ac_cv_int_type_double_cell="intptr_t"
327: ;;
328: $ac_cv_sizeof_int128_t)
329: ac_cv_int_type_double_cell="int128_t"
330: ;;
331: esac
332: AC_MSG_RESULT($ac_cv_int_type_double_cell)
333:
334: AC_MSG_CHECKING([for a C type for unsigned double-cells])
335: ac_cv_int_type_double_ucell=none
336: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
337: $ac_cv_sizeof_short)
338: ac_cv_int_type_double_ucell="unsigned short"
339: ;;
340: $ac_cv_sizeof_int)
341: ac_cv_int_type_double_ucell="unsigned int"
342: ;;
343: $ac_cv_sizeof_long)
344: ac_cv_int_type_double_ucell="unsigned long"
345: ;;
346: $ac_cv_sizeof_long_long)
347: ac_cv_int_type_double_ucell="unsigned long long"
348: ;;
349: $ac_cv_sizeof_intptr_t)
350: ac_cv_int_type_double_ucell="unsigned intptr_t"
351: ;;
352: $ac_cv_sizeof_uint128_t)
353: ac_cv_int_type_double_ucell="uint128_t"
354: ;;
355: esac
356: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
357:
358: if test "$ac_cv_int_type_double_cell" = none || \
359: test "$ac_cv_int_type_double_ucell" = none
360: then
361: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
362: AC_LIBOBJ(dblsub)
363: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
364: else
365: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
366: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
367: fi
368:
369: AC_TYPE_OFF_T
370: AC_CHECK_SIZEOF(off_t)
371: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
372: ac_small_off_t=$?
373: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
374:
375: ENGINE_FLAGS=
376: AC_SUBST(ENGINE_FLAGS)
377:
378: # Try if GCC understands -fno-gcse
379:
380: AC_MSG_CHECKING([if $CC understands -fno-gcse])
381: CFLAGS_1="$CFLAGS"
382: CFLAGS="$CFLAGS -fno-gcse"
383: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
384: CFLAGS="$CFLAGS_1"
385: AC_MSG_RESULT($ac_nogcse)
386:
387: # Try if GCC understands -fno-strict-aliasing
388: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
389: CFLAGS_1="$CFLAGS"
390: CFLAGS="$CFLAGS -fno-strict-aliasing"
391: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
392: CFLAGS="$CFLAGS_1"
393: AC_MSG_RESULT($ac_nostrictaliasing)
394:
395: # Try if GCC understands -fno-crossjumping
396: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
397: CFLAGS_1="$CFLAGS"
398: CFLAGS="$CFLAGS -fno-crossjumping"
399: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
400: CFLAGS="$CFLAGS_1"
401: AC_MSG_RESULT($ac_nocrossjumping)
402:
403: # Try if GCC understands -fno-reorder-blocks
404: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
405: CFLAGS_1="$CFLAGS"
406: CFLAGS="$CFLAGS -fno-reorder-blocks"
407: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
408: CFLAGS="$CFLAGS_1"
409: AC_MSG_RESULT($ac_noreorder_blocks)
410:
411: # Try if GCC understands __attribute__((unused))
412: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
413: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
414: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
415: AC_MSG_RESULT($MAYBE_UNUSED)
416:
417: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
418: AC_SUBST(asm_fs)
419:
420: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
421: AC_SUBST(disasm_fs)
422:
423: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
424:
425: case "$host_os" in
426: *win32|cygwin)
427: DIRSEP="\\\\"
428: PATHSEP=";"
429: #we want the builtins of command.com/cmd.exe and its
430: # handling of .com files.
431: #$COMSPEC contains the name of the Windows shell;
432: # the ./ is there, because the bash does not recognize
433: # absolute DOS filenames
434: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
435: ;;
436: *darwin*)
437: #Darwin uses some funny preprocessor by default; eliminate it:
438: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
439: CFLAGS="$CFLAGS -no-cpp-precomp"
440: DIRSEP="/"
441: PATHSEP=":"
442: DEFAULTSYSTEMPREFIX=""
443: ;;
444: *)
445: DIRSEP="/"
446: PATHSEP=":"
447: DEFAULTSYSTEMPREFIX=""
448: ;;
449: esac
450: AC_SUBST(DIRSEP)
451: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
452: AC_SUBST(PATHSEP)
453: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
454: AC_SUBST(DEFAULTSYSTEMPREFIX)
455: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
456:
457: dnl Now a little support for DOS/DJGCC
458: AC_SUBST(GFORTH_EXE)
459: GFORTH_EXE=""
460: AC_SUBST(GFORTHFAST_EXE)
461: GFORTHFAST_EXE=""
462: AC_SUBST(GFORTHITC_EXE)
463: GFORTHITC_EXE=""
464: AC_SUBST(GFORTHDITC_EXE)
465: GFORTHDITC_EXE=""
466:
467: AC_SUBST(FORTHSIZES)
468:
469: dnl if test "$PEEPHOLE" = "yes"
470: dnl then
471: dnl PEEPHOLEFLAG="true"
472: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
473: dnl else
474: dnl PEEPHOLEFLAG="false"
475: dnl fi
476: PEEPHOLEFLAG="true"
477: AC_SUBST(PEEPHOLEFLAG)
478:
479: dnl copy commands for systems that don't have links
480: AC_SUBST(LINK_KERNL)
481: LINK_KERNL=""
482:
483: #if test $host_os=dos
484: #then
485: # echo Configuring for DOS!!!
486: # MAKE_EXE="coff2exe gforth"
487: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
488: #fi
489:
490: dnl the following macro produces a warning with autoconf-2.1
491: AC_C_BIGENDIAN
492: AC_SUBST(KERNEL)
493: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
494: if test $ac_cv_c_bigendian = yes; then
495: bytesex=b
496: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
497: else
498: bytesex=l
499: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
500: fi
501:
502: #check how to do asm(".skip 16")
503: echo "CFLAGS=$CFLAGS"
504: echo "ac_link=$ac_link"
505: AC_MSG_CHECKING([if and how we can waste code space])
506: if test -z "$skipcode"; then
507: skipcode=no
508: CFLAGS_1="$CFLAGS"
509: CFLAGS="$CFLAGS $ENGINE_FLAGS"
510: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
511: do
512: AC_TRY_RUN(
513: [int foo(int,int,int);
514: main()
515: {
516: exit(foo(0,0,0)!=16);
517: }
518: int foo(int x, int y, int z)
519: {
520: static void *labels[]={&&label1, &&label2};
521: if (x) {
522: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
523: label1:
524: asm("$i"); /* or ".space 16" or somesuch */
525: label2: ;
526: }
527: {
528: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
529: return labels[1]-labels[0];
530: }
531: }]
532: ,skipcode=$i; break
533: ,,)
534: done
535: CFLAGS=$CFLAGS_1
536: fi
537: AC_MSG_RESULT($skipcode)
538: if test "$skipcode" = no
539: then
540: if test -z $no_dynamic_default; then
541: no_dynamic_default=1
542: AC_MSG_WARN(Disabling default dynamic native code generation)
543: fi
544: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
545: else
546: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
547: fi
548:
549: test "$no_dynamic_default" || no_dynamic_default=0
550: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
551:
552: dnl Checks for programs.
553: AC_PROG_LN_S
554: AC_PROG_INSTALL
555:
556: dnl Checks for library functions
557: dnl This check is just for making later checks link with libm.
558: dnl using sin here is no good idea since it is built-into gcc and typechecked
559: AC_CHECK_LIB(m,asin)
560: AC_CHECK_LIB(dl,dlopen)
561: dnl check for ffcall libraries
562: dnl unfortunately, these four calls are separated out into a library each.
563: AC_CHECK_LIB(avcall,__builtin_avcall)
564: AC_CHECK_LIB(callback,__vacall_r)
565: AC_CHECK_LIB(vacall,vacall)
566: AC_CHECK_LIB(trampoline,alloc_trampoline)
567: FFCALLFLAG="false"
568: OLDCALLFLAG="true"
569: 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])
570: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
571: AC_SUBST(FFCALLFLAG)
572: AC_SUBST(OLDCALLFLAG)
573: if test "$host_os" != "nextstep3"
574: then
575: AC_FUNC_MEMCMP
576: fi
577: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
578: AC_FUNC_FSEEKO
579: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
580: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
581: AC_DECL_SYS_SIGLIST
582: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
583: AC_CHECK_FUNCS(expm1 log1p)
584: AC_REPLACE_FUNCS(rint ecvt)
585: dnl No check for select, because our replacement is no good under
586: dnl anything but DOS
587: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
588: AC_FUNC_FNMATCH
589: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
590: AC_CHECK_FUNCS(mmap sysconf getpagesize)
591: AM_PATH_LISPDIR
592:
593: kernel_fi=kernl${wordsize}${bytesex}.fi
594: AC_SUBST(kernel_fi)
595:
596: #this breaks bindists
597: #dnl replace srource directory by absolute value
598: #if test $srcdir = "."; then srcdir=`pwd`
599: #fi
600:
601: AC_SUBST(machine)
602: AC_CONFIG_FILES([
603: Makefile
604: Makedist
605: gforthmi
606: vmgen
607: machpc.fs
608: engine/Makefile
609: doc/version.texi ])
610: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
611: chmod +x gforthmi
612: chmod +x vmgen
613: test -d kernel||mkdir kernel]],[[]])
614: AC_OUTPUT
615:
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