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_ARG_ENABLE(force-cdiv,
68: AC_HELP_STRING([--enable-force-cdiv],
69: [ Use the native C division - symmetric - instead of
70: floored division (default disabled).]),
71: ,enable_force_cdiv=no)
72: test "$enable_force_cdiv" = "no"||
73: AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
74:
75: AC_SUBST(PROFEXES)
76: AC_SUBST(PROFOBJS)
77: AC_ARG_ENABLE(prof,
78: AC_HELP_STRING([--enable-prof],
79: [ Build gforth-prof, which outputs frequently occuring
80: sequences of primitives.]),
81: ,enable_prof=no)
82: if test "$enable_prof" = "no"; then
83: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
84: fi
85:
86: AC_ARG_WITH(debug,
87: [ --with-debug specifies option -g to compile with debug info
88: --without-debug omits the -g switch and creates smaller images on
89: machines where "strip" has problems with gcc style
90: debugging informations.],
91: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
92:
93: dnl PEEPHOLE="yes"
94: dnl AC_ARG_WITH(peephole,
95: dnl [ --with-peephole Enable peephole optimization (default)
96: dnl --without-peephole disables peephole optimization. Creates smaller,
97: dnl but slower images.],
98: dnl PEEPHOLE="$withval")
99:
100: #variables mentioned in INSTALL
101: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
102: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
103: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
104: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
105: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
106: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
107: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
108: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
109: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
110: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
111: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
112: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
113: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
114: AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
115:
116: #set up feature test macros, so the tests get them right:
117: # turn on all POSIX, SUSv3, and GNU features if available
118: AC_GNU_SOURCE
119: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
120:
121: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
122: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
123: dnl but not for _XOPEN_SOURCE)
124: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
125: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
126: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
127: # turn on large file support with 64-bit off_t where available
128: AC_SYS_LARGEFILE
129: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
130: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
131:
132: #currently we force direct threading this way. Eventually we should
133: #setup in the arch and engine files right
134:
135: AC_PROG_CC
136:
137: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
138:
139: AC_SUBST(CC)
140: AC_SUBST(DEBUGFLAG)
141:
142: AC_MSG_CHECKING(make type)
143: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
144:
145: GNUMAKE='#'
146: test "$make_type" = "GNU Make" && GNUMAKE=''
147:
148: AC_MSG_RESULT($make_type)
149:
150: AC_SUBST(GNUMAKE)
151:
152: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
153: OLDLDFLAGS=$LDFLAGS
154: LDFLAGS="$LDFLAGS -export-dynamic"
155: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
156: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
157: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
158: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
159: AC_MSG_RESULT($ac_export_dynamic)
160:
161: #terminology is a bit unusual here: The host is the system on which
162: #gforth will run; the system on which configure will run is the `build'
163: AC_CANONICAL_HOST
164: case "$host_cpu" in
165: arm*)
166: machine=arm
167: CFLAGS="$CFLAGS -fomit-frame-pointer"
168: if test -z $no_dynamic_default; then
169: no_dynamic_default=1
170: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
171: fi
172: ;;
173: hppa*)
174: machine=hppa
175: $srcdir/mkinstalldirs arch/hppa
176: AC_LIBOBJ(../arch/hppa/cache)
177: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
178: LDFLAGS="$LDFLAGS -Xlinker -N"
179: LIBS="$LIBS -L/lib/pa1.1/"
180: ;;
181: sparc*)
182: machine=sparc
183: ;;
184: i386)
185: machine=386
186: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
187: ;;
188: i486)
189: machine=386
190: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
191: ;;
192: i*86)
193: machine=386
194: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
195: CFLAGS_1="$CFLAGS"
196: CFLAGS="$CFLAGS -march=pentium"
197: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
198: ;;
199: x86_64)
200: machine=amd64
201: ;;
202: ia64*)
203: machine=ia64
204: AC_LIBOBJ(../arch/ia64/flush_icache_block)
205: test "$skipcode" || skipcode="nop.i 0"
206: #".skip 16" passes the test below,
207: # but gives an assembler error in engine
208: ;;
209: m68k)
210: machine=m68k
211: CFLAGS="$CFLAGS -fomit-frame-pointer"
212: if test "$host_os" = "nextstep3"
213: then
214: AC_LIBOBJ(termios)
215: fi
216: ;;
217: mips*)
218: machine=mips
219: #dynamic native code has the following problems on MIPS:
220: #
221: #1) J/JAL seems relocatable, but is are only
222: #relocatable within a 256MB-segment. While we try to
223: #get the linker to arrange this, there is no guarantee
224: #that this will succeed (and if the user uses a lot of
225: #memory, it is likely to fail).
226: #
227: #2) The way we generate dynamic native code may
228: #violate MIPS architectural restrictions (in
229: #particular, the delay slots of LW, MFLO, etc.)
230: #
231: #Therefore we disable dynamic native code by default:
232: if test -z $no_dynamic_default; then
233: no_dynamic_default=1
234: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
235: fi
236: ;;
237: alpha*)
238: machine=alpha
239: #full IEEE FP support for more uniformity across platforms:
240: CFLAGS="$CFLAGS -mieee"
241: ;;
242: power*|rs6000)
243: machine=power
244: $srcdir/mkinstalldirs arch/power
245: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
246: #long long is broken on (at least) gcc-2.95.* for PPC
247: test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
248: ;;
249: *)
250: AC_MSG_WARN([Using a generic machine description])
251: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
252: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
253: machine=generic
254: #I-cache flushing would be needed for dynamic code generation
255: if test -z $no_dynamic_default; then
256: no_dynamic_default=1
257: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
258: fi
259: esac
260: AC_SUBST(host)
261:
262: if test "${enable_force_ll+set}" = set; then
263: ac_includes_default="$ac_includes_default
264: #include \"arch/generic/128bit.h\""
265: fi
266:
267: dnl the following macro produces a warning with autoconf-2.1
268: AC_CHECK_SIZEOF(char *)
269: case "$ac_cv_sizeof_char_p" in
270: 2)
271: wordsize=16
272: ;;
273: 4)
274: wordsize=32
275: ;;
276: 8)
277: wordsize=64
278: ;;
279: esac
280:
281: AC_CHECK_SIZEOF(char)
282: AC_CHECK_SIZEOF(short)
283: AC_CHECK_SIZEOF(int)
284: AC_CHECK_SIZEOF(long)
285: AC_CHECK_SIZEOF(long long)
286: AC_CHECK_SIZEOF(intptr_t)
287: AC_CHECK_SIZEOF(int128_t)
288: AC_CHECK_SIZEOF(uint128_t)
289:
290: AC_MSG_CHECKING([for a C type for cells])
291: ac_cv_int_type_cell=none
292: case "$ac_cv_sizeof_char_p" in
293: $ac_cv_sizeof_int)
294: ac_cv_int_type_cell=int
295: ;;
296: $ac_cv_sizeof_short)
297: ac_cv_int_type_cell=short
298: ;;
299: $ac_cv_sizeof_char)
300: ac_cv_int_type_cell=char
301: ;;
302: $ac_cv_sizeof_long)
303: ac_cv_int_type_cell=long
304: ;;
305: $ac_cv_sizeof_long_long)
306: ac_cv_int_type_cell="long long"
307: ;;
308: $ac_cv_sizeof_intptr_t)
309: ac_cv_int_type_cell="intptr_t"
310: ;;
311: $ac_cv_sizeof_int128_t)
312: ac_cv_int_type_cell="int128_t"
313: ;;
314: esac
315: AC_MSG_RESULT($ac_cv_int_type_cell)
316: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
317:
318: AC_MSG_CHECKING([for a C type for double-cells])
319: ac_cv_int_type_double_cell=none
320: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
321: $ac_cv_sizeof_short)
322: ac_cv_int_type_double_cell=short
323: ;;
324: $ac_cv_sizeof_int)
325: ac_cv_int_type_double_cell=int
326: ;;
327: $ac_cv_sizeof_long)
328: ac_cv_int_type_double_cell=long
329: ;;
330: $ac_cv_sizeof_long_long)
331: ac_cv_int_type_double_cell="long long"
332: ;;
333: $ac_cv_sizeof_intptr_t)
334: ac_cv_int_type_double_cell="intptr_t"
335: ;;
336: $ac_cv_sizeof_int128_t)
337: ac_cv_int_type_double_cell="int128_t"
338: ;;
339: esac
340: AC_MSG_RESULT($ac_cv_int_type_double_cell)
341:
342: AC_MSG_CHECKING([for a C type for unsigned double-cells])
343: ac_cv_int_type_double_ucell=none
344: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
345: $ac_cv_sizeof_short)
346: ac_cv_int_type_double_ucell="unsigned short"
347: ;;
348: $ac_cv_sizeof_int)
349: ac_cv_int_type_double_ucell="unsigned int"
350: ;;
351: $ac_cv_sizeof_long)
352: ac_cv_int_type_double_ucell="unsigned long"
353: ;;
354: $ac_cv_sizeof_long_long)
355: ac_cv_int_type_double_ucell="unsigned long long"
356: ;;
357: $ac_cv_sizeof_intptr_t)
358: ac_cv_int_type_double_ucell="unsigned intptr_t"
359: ;;
360: $ac_cv_sizeof_uint128_t)
361: ac_cv_int_type_double_ucell="uint128_t"
362: ;;
363: esac
364: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
365:
366: if test "$ac_cv_int_type_double_cell" = none || \
367: test "$ac_cv_int_type_double_ucell" = none
368: then
369: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
370: AC_LIBOBJ(dblsub)
371: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
372: else
373: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
374: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
375: fi
376:
377: AC_TYPE_OFF_T
378: AC_CHECK_SIZEOF(off_t)
379: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
380: ac_small_off_t=$?
381: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
382:
383: ENGINE_FLAGS=
384: AC_SUBST(ENGINE_FLAGS)
385:
386: # Try if GCC understands -fno-gcse
387:
388: AC_MSG_CHECKING([if $CC understands -fno-gcse])
389: CFLAGS_1="$CFLAGS"
390: CFLAGS="$CFLAGS -fno-gcse"
391: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
392: CFLAGS="$CFLAGS_1"
393: AC_MSG_RESULT($ac_nogcse)
394:
395: # Try if GCC understands -fno-strict-aliasing
396: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
397: CFLAGS_1="$CFLAGS"
398: CFLAGS="$CFLAGS -fno-strict-aliasing"
399: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
400: CFLAGS="$CFLAGS_1"
401: AC_MSG_RESULT($ac_nostrictaliasing)
402:
403: # Try if GCC understands -fno-crossjumping
404: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
405: CFLAGS_1="$CFLAGS"
406: CFLAGS="$CFLAGS -fno-crossjumping"
407: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
408: CFLAGS="$CFLAGS_1"
409: AC_MSG_RESULT($ac_nocrossjumping)
410:
411: # Try if GCC understands -fno-reorder-blocks
412: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
413: CFLAGS_1="$CFLAGS"
414: CFLAGS="$CFLAGS -fno-reorder-blocks"
415: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
416: CFLAGS="$CFLAGS_1"
417: AC_MSG_RESULT($ac_noreorder_blocks)
418:
419: # Try if GCC understands __attribute__((unused))
420: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
421: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
422: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
423: AC_MSG_RESULT($MAYBE_UNUSED)
424:
425: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
426: AC_SUBST(asm_fs)
427:
428: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
429: AC_SUBST(disasm_fs)
430:
431: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
432:
433: case "$host_os" in
434: *win32|cygwin)
435: DIRSEP="\\\\"
436: PATHSEP=";"
437: #we want the builtins of command.com/cmd.exe and its
438: # handling of .com files.
439: #$COMSPEC contains the name of the Windows shell;
440: # the ./ is there, because the bash does not recognize
441: # absolute DOS filenames
442: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
443: ;;
444: *darwin*)
445: #Darwin uses some funny preprocessor by default; eliminate it:
446: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
447: CFLAGS="$CFLAGS -no-cpp-precomp"
448: DIRSEP="/"
449: PATHSEP=":"
450: DEFAULTSYSTEMPREFIX=""
451: ;;
452: *)
453: DIRSEP="/"
454: PATHSEP=":"
455: DEFAULTSYSTEMPREFIX=""
456: ;;
457: esac
458: AC_SUBST(DIRSEP)
459: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
460: AC_SUBST(PATHSEP)
461: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
462: AC_SUBST(DEFAULTSYSTEMPREFIX)
463: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
464:
465: dnl Now a little support for DOS/DJGCC
466: AC_SUBST(GFORTH_EXE)
467: GFORTH_EXE=""
468: AC_SUBST(GFORTHFAST_EXE)
469: GFORTHFAST_EXE=""
470: AC_SUBST(GFORTHITC_EXE)
471: GFORTHITC_EXE=""
472: AC_SUBST(GFORTHDITC_EXE)
473: GFORTHDITC_EXE=""
474:
475: AC_SUBST(FORTHSIZES)
476:
477: dnl if test "$PEEPHOLE" = "yes"
478: dnl then
479: dnl PEEPHOLEFLAG="true"
480: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
481: dnl else
482: dnl PEEPHOLEFLAG="false"
483: dnl fi
484: PEEPHOLEFLAG="true"
485: AC_SUBST(PEEPHOLEFLAG)
486:
487: dnl copy commands for systems that don't have links
488: AC_SUBST(LINK_KERNL)
489: LINK_KERNL=""
490:
491: #if test $host_os=dos
492: #then
493: # echo Configuring for DOS!!!
494: # MAKE_EXE="coff2exe gforth"
495: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
496: #fi
497:
498: dnl the following macro produces a warning with autoconf-2.1
499: AC_C_BIGENDIAN
500: AC_SUBST(KERNEL)
501: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
502: if test $ac_cv_c_bigendian = yes; then
503: bytesex=b
504: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
505: else
506: bytesex=l
507: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
508: fi
509:
510: #check how to do asm(".skip 16")
511: echo "CFLAGS=$CFLAGS"
512: echo "ac_link=$ac_link"
513: AC_MSG_CHECKING([if and how we can waste code space])
514: if test -z "$skipcode"; then
515: skipcode=no
516: CFLAGS_1="$CFLAGS"
517: CFLAGS="$CFLAGS $ENGINE_FLAGS"
518: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
519: do
520: AC_TRY_RUN(
521: [int foo(int,int,int);
522: main()
523: {
524: exit(foo(0,0,0)!=16);
525: }
526: int foo(int x, int y, int z)
527: {
528: static void *labels[]={&&label1, &&label2};
529: if (x) {
530: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
531: label1:
532: asm("$i"); /* or ".space 16" or somesuch */
533: label2: ;
534: }
535: {
536: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
537: return labels[1]-labels[0];
538: }
539: }]
540: ,skipcode=$i; break
541: ,,)
542: done
543: CFLAGS=$CFLAGS_1
544: fi
545: AC_MSG_RESULT($skipcode)
546: if test "$skipcode" = no
547: then
548: if test -z $no_dynamic_default; then
549: no_dynamic_default=1
550: AC_MSG_WARN(Disabling default dynamic native code generation)
551: fi
552: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
553: else
554: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
555: fi
556:
557: test "$no_dynamic_default" || no_dynamic_default=0
558: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
559:
560: dnl Checks for programs.
561: AC_PROG_LN_S
562: AC_PROG_INSTALL
563:
564: dnl Checks for library functions
565: dnl This check is just for making later checks link with libm.
566: dnl using sin here is no good idea since it is built-into gcc and typechecked
567: AC_CHECK_LIB(m,asin)
568: AC_CHECK_LIB(dl,dlopen)
569: dnl check for ffcall libraries
570: dnl unfortunately, these four calls are separated out into a library each.
571: AC_CHECK_LIB(avcall,__builtin_avcall)
572: AC_CHECK_LIB(callback,__vacall_r)
573: AC_CHECK_LIB(vacall,vacall)
574: AC_CHECK_LIB(trampoline,alloc_trampoline)
575: FFCALLFLAG="false"
576: OLDCALLFLAG="true"
577: 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])
578: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
579: AC_SUBST(FFCALLFLAG)
580: AC_SUBST(OLDCALLFLAG)
581: if test "$host_os" != "nextstep3"
582: then
583: AC_FUNC_MEMCMP
584: fi
585: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
586: AC_FUNC_FSEEKO
587: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
588: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
589: AC_DECL_SYS_SIGLIST
590: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
591: AC_CHECK_FUNCS(expm1 log1p)
592: AC_REPLACE_FUNCS(rint ecvt)
593: dnl No check for select, because our replacement is no good under
594: dnl anything but DOS
595: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
596: AC_FUNC_FNMATCH
597: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
598: AC_CHECK_FUNCS(mmap sysconf getpagesize)
599: AM_PATH_LISPDIR
600:
601: kernel_fi=kernl${wordsize}${bytesex}.fi
602: AC_SUBST(kernel_fi)
603:
604: #this breaks bindists
605: #dnl replace srource directory by absolute value
606: #if test $srcdir = "."; then srcdir=`pwd`
607: #fi
608:
609: AC_SUBST(machine)
610: AC_CONFIG_FILES([
611: Makefile
612: Makedist
613: gforthmi
614: vmgen
615: machpc.fs
616: engine/Makefile
617: doc/version.texi ])
618: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
619: chmod +x gforthmi
620: chmod +x vmgen
621: test -d kernel||mkdir kernel]],[[]])
622: AC_OUTPUT
623:
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