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="$withval")
88:
89: AC_ARG_WITH(ec,
90: AC_HELP_STRING([--with-ec=<arch>],
91: [ Build gforth for systems without OS.]),
92: [if test "$withval" = "no"; then
93: echo "defining hosted system"
94: EC_MODE="false"
95: EC=""
96: engine2="engine2.o"
97: engine_fast2="engine-fast2.o"
98: no_dynamic=""
99: image_i=""
100: signals_o="io.o signals.o"
101: else
102: echo "defining standalone system (${withval})"
103: AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
104: EC_MODE="true"
105: EC="-ec"
106: engine2=""
107: engine_fast2=""
108: no_dynamic="-DNO_DYNAMIC"
109: image_i="image.i"
110: if test "$withval" != "yes"; then
111: signals_o="io-${withval}.o"
112: else
113: signals_o="io.o"
114: fi
115: fi])
116:
117: #variables mentioned in INSTALL
118: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
119: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
120: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
121: 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)])
122:
123: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
124: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
125: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
126: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
127: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
128: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
129: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
130: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
131: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
132: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
133: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
134: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
135: AC_ARG_VAR(asmcomment, [assembler comment start string])
136: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
137:
138: #set up feature test macros, so the tests get them right:
139: # turn on all POSIX, SUSv3, and GNU features if available
140: AC_GNU_SOURCE
141: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
142:
143: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
144: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
145: dnl but not for _XOPEN_SOURCE)
146: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
147: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
148: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
149: # turn on large file support with 64-bit off_t where available
150: AC_SYS_LARGEFILE
151: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
152: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
153:
154: #currently we force direct threading this way. Eventually we should
155: #setup in the arch and engine files right
156:
157: AC_PROG_CC
158:
159: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
160:
161: AC_SUBST(CC)
162: AC_SUBST(DEBUGFLAG)
163: AC_SUBST(EC)
164: AC_SUBST(EC_MODE)
165: AC_SUBST(engine2)
166: AC_SUBST(engine_fast2)
167: AC_SUBST(no_dynamic)
168: AC_SUBST(image_i)
169: AC_SUBST(signals_o)
170:
171: #this is used to disable some (not generally essential) part of the
172: #Makefile that some makes don't grok. It would be better to test for
173: #this specific Makefile feature than the make version.
174: AC_MSG_CHECKING(make type)
175: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
176: GNUMAKE='#'
177: test "$make_type" = "GNU Make" && GNUMAKE=''
178: AC_MSG_RESULT($make_type)
179: AC_SUBST(GNUMAKE)
180:
181: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
182: OLDLDFLAGS=$LDFLAGS
183: LDFLAGS="$LDFLAGS -export-dynamic"
184: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
185: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
186: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
187: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
188: AC_MSG_RESULT($ac_export_dynamic)
189:
190: #terminology is a bit unusual here: The host is the system on which
191: #gforth will run; the system on which configure will run is the `build'
192: AC_CANONICAL_HOST
193: case "$host_cpu" in
194: arm*)
195: machine=arm
196: CFLAGS="$CFLAGS -fomit-frame-pointer"
197: if test -z $arm_cacheflush; then
198: no_dynamic_default=1
199: arm_cacheflush=arch/arm/cacheflush0
200: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
201: fi
202: AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
203: AC_LIBOBJ(../$arm_cacheflush)
204: #longer skipcodes lead to problems on ARM, and it uses
205: #only 4-byte alignment anyway
206: test "$skipcode" || skipcode="nop"
207: ;;
208: hppa*)
209: machine=hppa
210: $srcdir/mkinstalldirs arch/hppa
211: AC_LIBOBJ(../arch/hppa/cache)
212: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
213: LDFLAGS="$LDFLAGS -Xlinker -N"
214: LIBS="$LIBS -L/lib/pa1.1/"
215: ;;
216: sparc*)
217: machine=sparc
218: ;;
219: i386)
220: machine=386
221: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
222: ;;
223: i486)
224: machine=386
225: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
226: ;;
227: i*86)
228: machine=386
229: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
230: CFLAGS_1="$CFLAGS"
231: CFLAGS="$CFLAGS -march=pentium"
232: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
233: ;;
234: x86_64)
235: machine=amd64
236: ;;
237: ia64*)
238: machine=ia64
239: AC_LIBOBJ(../arch/ia64/flush_icache_block)
240: test "$skipcode" || skipcode="nop.i 0"
241: #".skip 16" passes the test below,
242: # but gives an assembler error in engine
243: ;;
244: m68k)
245: machine=m68k
246: CFLAGS="$CFLAGS -fomit-frame-pointer"
247: if test "$host_os" = "nextstep3"
248: then
249: AC_LIBOBJ(termios)
250: fi
251: ;;
252: mips*)
253: machine=mips
254: #dynamic native code has the following problems on MIPS:
255: #
256: #1) J/JAL seems relocatable, but is are only
257: #relocatable within a 256MB-segment. While we try to
258: #get the linker to arrange this, there is no guarantee
259: #that this will succeed (and if the user uses a lot of
260: #memory, it is likely to fail).
261: #
262: #2) The way we generate dynamic native code may
263: #violate MIPS architectural restrictions (in
264: #particular, the delay slots of LW, MFLO, etc.)
265: #
266: #Therefore we disable dynamic native code by default:
267: if test -z $no_dynamic_default; then
268: no_dynamic_default=1
269: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
270: fi
271: ;;
272: alpha*)
273: machine=alpha
274: #full IEEE FP support for more uniformity across platforms:
275: CFLAGS="$CFLAGS -mieee"
276: ;;
277: power*|rs6000)
278: machine=power
279: $srcdir/mkinstalldirs arch/power
280: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
281: #long long is broken on (at least) gcc-2.95.* for PPC
282: test x$ac_cv_sizeof_long_long = x &&
283: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
284: ac_cv_sizeof_long_long=0
285: ;;
286: *)
287: AC_MSG_WARN([Using a generic machine description])
288: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
289: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
290: machine=generic
291: #I-cache flushing would be needed for dynamic code generation
292: if test -z $no_dynamic_default; then
293: no_dynamic_default=1
294: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
295: fi
296: esac
297: AC_SUBST(host)
298:
299: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
300: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
301: [number of registers in the default stack cache state for gforth-fast and gforth-native])
302:
303: test x$GCC_PR15242_WORKAROUND = x ||
304: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
305: [force (1) or forbid (0) use of a workaround for a gcc performance bug])
306:
307: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
308: dnl generation on gccs affected by PR15242])
309:
310:
311: if test "${enable_force_ll+set}" = set; then
312: ac_includes_default="$ac_includes_default
313: #include \"arch/generic/128bit.h\""
314: fi
315:
316: dnl the following macro produces a warning with autoconf-2.1
317: AC_CHECK_SIZEOF(char *)
318: case "$ac_cv_sizeof_char_p" in
319: 2)
320: wordsize=16
321: ;;
322: 4)
323: wordsize=32
324: ;;
325: 8)
326: wordsize=64
327: ;;
328: esac
329:
330: AC_CHECK_SIZEOF(char)
331: AC_CHECK_SIZEOF(short)
332: AC_CHECK_SIZEOF(int)
333: AC_CHECK_SIZEOF(long)
334: AC_CHECK_SIZEOF(long long)
335: AC_CHECK_SIZEOF(intptr_t)
336: AC_CHECK_SIZEOF(int128_t)
337: AC_CHECK_SIZEOF(uint128_t)
338:
339: AC_MSG_CHECKING([for a C type for cells])
340: ac_cv_int_type_cell=none
341: case "$ac_cv_sizeof_char_p" in
342: $ac_cv_sizeof_int)
343: ac_cv_int_type_cell=int
344: ;;
345: $ac_cv_sizeof_short)
346: ac_cv_int_type_cell=short
347: ;;
348: $ac_cv_sizeof_char)
349: ac_cv_int_type_cell=char
350: ;;
351: $ac_cv_sizeof_long)
352: ac_cv_int_type_cell=long
353: ;;
354: $ac_cv_sizeof_long_long)
355: ac_cv_int_type_cell="long long"
356: ;;
357: $ac_cv_sizeof_intptr_t)
358: ac_cv_int_type_cell="intptr_t"
359: ;;
360: $ac_cv_sizeof_int128_t)
361: ac_cv_int_type_cell="int128_t"
362: ;;
363: esac
364: AC_MSG_RESULT($ac_cv_int_type_cell)
365: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
366:
367: AC_MSG_CHECKING([for a C type for wydes])
368: ac_cv_wyde_type_cell=none
369: case 2 in
370: $ac_cv_sizeof_int)
371: ac_cv_wyde_type_cell=int
372: ;;
373: $ac_cv_sizeof_short)
374: ac_cv_wyde_type_cell=short
375: ;;
376: $ac_cv_sizeof_char)
377: ac_cv_wyde_type_cell=char
378: ;;
379: $ac_cv_sizeof_long)
380: ac_cv_wyde_type_cell=long
381: ;;
382: $ac_cv_sizeof_long_long)
383: ac_cv_wyde_type_cell="long long"
384: ;;
385: $ac_cv_sizeof_intptr_t)
386: ac_cv_wyde_type_cell="intptr_t"
387: ;;
388: $ac_cv_sizeof_int128_t)
389: ac_cv_wyde_type_cell="int128_t"
390: ;;
391: esac
392: AC_MSG_RESULT($ac_cv_wyde_type_cell)
393: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
394:
395: AC_MSG_CHECKING([for a C type for tetrabytes])
396: ac_cv_tetrabyte_type_cell=none
397: case 4 in
398: $ac_cv_sizeof_int)
399: ac_cv_tetrabyte_type_cell=int
400: ;;
401: $ac_cv_sizeof_short)
402: ac_cv_tetrabyte_type_cell=short
403: ;;
404: $ac_cv_sizeof_char)
405: ac_cv_tetrabyte_type_cell=char
406: ;;
407: $ac_cv_sizeof_long)
408: ac_cv_tetrabyte_type_cell=long
409: ;;
410: $ac_cv_sizeof_long_long)
411: ac_cv_tetrabyte_type_cell="long long"
412: ;;
413: $ac_cv_sizeof_intptr_t)
414: ac_cv_tetrabyte_type_cell="intptr_t"
415: ;;
416: $ac_cv_sizeof_int128_t)
417: ac_cv_tetrabyte_type_cell="int128_t"
418: ;;
419: esac
420: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
421: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
422:
423: AC_MSG_CHECKING([for a C type for double-cells])
424: ac_cv_int_type_double_cell=none
425: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
426: $ac_cv_sizeof_short)
427: ac_cv_int_type_double_cell=short
428: ;;
429: $ac_cv_sizeof_int)
430: ac_cv_int_type_double_cell=int
431: ;;
432: $ac_cv_sizeof_long)
433: ac_cv_int_type_double_cell=long
434: ;;
435: $ac_cv_sizeof_long_long)
436: ac_cv_int_type_double_cell="long long"
437: ;;
438: $ac_cv_sizeof_intptr_t)
439: ac_cv_int_type_double_cell="intptr_t"
440: ;;
441: $ac_cv_sizeof_int128_t)
442: ac_cv_int_type_double_cell="int128_t"
443: ;;
444: esac
445: AC_MSG_RESULT($ac_cv_int_type_double_cell)
446:
447: AC_MSG_CHECKING([for a C type for unsigned double-cells])
448: ac_cv_int_type_double_ucell=none
449: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
450: $ac_cv_sizeof_short)
451: ac_cv_int_type_double_ucell="unsigned short"
452: ;;
453: $ac_cv_sizeof_int)
454: ac_cv_int_type_double_ucell="unsigned int"
455: ;;
456: $ac_cv_sizeof_long)
457: ac_cv_int_type_double_ucell="unsigned long"
458: ;;
459: $ac_cv_sizeof_long_long)
460: ac_cv_int_type_double_ucell="unsigned long long"
461: ;;
462: $ac_cv_sizeof_intptr_t)
463: ac_cv_int_type_double_ucell="unsigned intptr_t"
464: ;;
465: $ac_cv_sizeof_uint128_t)
466: ac_cv_int_type_double_ucell="uint128_t"
467: ;;
468: esac
469: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
470:
471: if test "$ac_cv_int_type_double_cell" = none || \
472: test "$ac_cv_int_type_double_ucell" = none
473: then
474: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
475: AC_LIBOBJ(dblsub)
476: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
477: else
478: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
479: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
480: fi
481:
482: AC_TYPE_OFF_T
483: AC_CHECK_SIZEOF(off_t)
484: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
485: ac_small_off_t=$?
486: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
487:
488: ENGINE_FLAGS=
489: AC_SUBST(ENGINE_FLAGS)
490:
491: # Try if GCC understands -fno-gcse
492:
493: AC_MSG_CHECKING([if $CC understands -fno-gcse])
494: CFLAGS_1="$CFLAGS"
495: CFLAGS="$CFLAGS -fno-gcse"
496: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
497: CFLAGS="$CFLAGS_1"
498: AC_MSG_RESULT($ac_nogcse)
499:
500: # Try if GCC understands -fno-strict-aliasing
501: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
502: CFLAGS_1="$CFLAGS"
503: CFLAGS="$CFLAGS -fno-strict-aliasing"
504: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
505: CFLAGS="$CFLAGS_1"
506: AC_MSG_RESULT($ac_nostrictaliasing)
507:
508: # Try if GCC understands -fno-crossjumping
509: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
510: CFLAGS_1="$CFLAGS"
511: CFLAGS="$CFLAGS -fno-crossjumping"
512: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
513: CFLAGS="$CFLAGS_1"
514: AC_MSG_RESULT($ac_nocrossjumping)
515:
516: # Try if GCC understands -fno-reorder-blocks
517: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
518: CFLAGS_1="$CFLAGS"
519: CFLAGS="$CFLAGS -fno-reorder-blocks"
520: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
521: CFLAGS="$CFLAGS_1"
522: AC_MSG_RESULT($ac_noreorder_blocks)
523:
524: # Try if GCC understands __attribute__((unused))
525: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
526: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
527: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
528: AC_MSG_RESULT($MAYBE_UNUSED)
529:
530: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
531: AC_SUBST(asm_fs)
532:
533: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
534: AC_SUBST(disasm_fs)
535:
536: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
537:
538: case "$host_os" in
539: *win32*)
540: # !!!FIXME!!! problems with cygwin and ';' as path separator
541: DIRSEP="\\\\"
542: PATHSEP=";"
543: #we want the builtins of command.com/cmd.exe and its
544: # handling of .com files.
545: #$COMSPEC contains the name of the Windows shell;
546: # the ./ is there, because the bash does not recognize
547: # absolute DOS filenames
548: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
549: ;;
550: *darwin*)
551: #Darwin uses some funny preprocessor by default; eliminate it:
552: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
553: CFLAGS="$CFLAGS -no-cpp-precomp"
554: DIRSEP="/"
555: PATHSEP=":"
556: DEFAULTSYSTEMPREFIX=""
557: ;;
558: *)
559: DIRSEP="/"
560: PATHSEP=":"
561: DEFAULTSYSTEMPREFIX=""
562: ;;
563: esac
564: AC_SUBST(DIRSEP)
565: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
566: AC_SUBST(PATHSEP)
567: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
568: AC_SUBST(DEFAULTSYSTEMPREFIX)
569: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
570:
571: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
572: #This magic incantation seems to be completely undocumented.
573: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
574:
575: dnl Now a little support for DOS/DJGCC
576: AC_SUBST(GFORTH_EXE)
577: GFORTH_EXE=""
578: AC_SUBST(GFORTHFAST_EXE)
579: GFORTHFAST_EXE=""
580: AC_SUBST(GFORTHITC_EXE)
581: GFORTHITC_EXE=""
582: AC_SUBST(GFORTHDITC_EXE)
583: GFORTHDITC_EXE=""
584:
585: AC_SUBST(FORTHSIZES)
586:
587: dnl if test "$PEEPHOLE" = "yes"
588: dnl then
589: dnl PEEPHOLEFLAG="true"
590: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
591: dnl else
592: dnl PEEPHOLEFLAG="false"
593: dnl fi
594: PEEPHOLEFLAG="true"
595: AC_SUBST(PEEPHOLEFLAG)
596:
597: dnl copy commands for systems that don't have links
598: AC_SUBST(LINK_KERNL)
599: LINK_KERNL=""
600:
601: #if test $host_os=dos
602: #then
603: # echo Configuring for DOS!!!
604: # MAKE_EXE="coff2exe gforth"
605: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
606: #fi
607:
608: dnl the following macro produces a warning with autoconf-2.1
609: AC_C_BIGENDIAN
610: AC_SUBST(KERNEL)
611: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
612: if test $ac_cv_c_bigendian = yes; then
613: bytesex=b
614: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
615: else
616: bytesex=l
617: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
618: fi
619:
620: #check how to do asm(".skip 16")
621: #echo "CFLAGS=$CFLAGS"
622: #echo "ac_link=$ac_link"
623: AC_MSG_CHECKING([if and how we can waste code space])
624: if test -z "$skipcode"; then
625: skipcode=no
626: CFLAGS_1="$CFLAGS"
627: CFLAGS="$CFLAGS $ENGINE_FLAGS"
628: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
629: do
630: AC_TRY_RUN(
631: [int foo(int,int,int);
632: main()
633: {
634: exit(foo(0,0,0)!=16);
635: }
636: int foo(int x, int y, int z)
637: {
638: static void *labels[]={&&label1, &&label2};
639: if (x) {
640: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
641: label1:
642: asm("$i"); /* or ".space 16" or somesuch */
643: label2: ;
644: }
645: {
646: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
647: return labels[1]-labels[0];
648: }
649: }]
650: ,skipcode=$i; break
651: ,,)
652: done
653: CFLAGS=$CFLAGS_1
654: fi
655: AC_MSG_RESULT($skipcode)
656: if test "$skipcode" = no
657: then
658: if test -z $no_dynamic_default; then
659: no_dynamic_default=1
660: AC_MSG_WARN(Disabling default dynamic native code generation)
661: fi
662: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
663: else
664: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
665: fi
666:
667: AC_MSG_CHECKING([if and how we can do comments in asm statements])
668: #the point here is to get asm statements that look different to
669: #gcc's "optimizer"
670: if test -z "$asmcomment"; then
671: asmcomment=no
672: CFLAGS_1="$CFLAGS"
673: CFLAGS="$CFLAGS $ENGINE_FLAGS"
674: for i in '"# "' '"! "' '"; "'; do
675: AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
676: done
677: CFLAGS=$CFLAGS_1
678: fi
679: AC_MSG_RESULT($asmcomment)
680: if test "$asmcomment" != no
681: then
682: AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
683: fi
684:
685: test "$no_dynamic_default" || no_dynamic_default=0
686: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
687:
688: dnl Checks for programs.
689: AC_PROG_LN_S
690: AC_PROG_INSTALL
691: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
692:
693: dnl Checks for library functions
694: dnl This check is just for making later checks link with libm.
695: dnl using sin here is no good idea since it is built-into gcc and typechecked
696: AC_CHECK_LIB(m,asin)
697: AC_CHECK_LIB(dl,dlopen)
698: dnl check for libffi 2.x
699: AC_CHECK_LIB(ffi,ffi_call)
700: if test $ac_cv_lib_ffi_ffi_call = yes
701: then
702: LIBFFIFLAG="true"
703: FFCALLFLAG="false"
704: OLDCALLFLAG="false"
705: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
706: else
707: dnl check for ffcall libraries
708: dnl unfortunately, these four calls are separated out into a library each.
709: AC_CHECK_LIB(avcall,__builtin_avcall)
710: AC_CHECK_LIB(callback,__vacall_r)
711: AC_CHECK_LIB(vacall,vacall)
712: AC_CHECK_LIB(trampoline,alloc_trampoline)
713: LIBFFIFLAG="false"
714: FFCALLFLAG="false"
715: OLDCALLFLAG="true"
716: 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])
717: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
718: fi
719: AC_SUBST(LIBFFIFLAG)
720: AC_SUBST(FFCALLFLAG)
721: AC_SUBST(OLDCALLFLAG)
722: if test "$host_os" != "nextstep3"
723: then
724: AC_FUNC_MEMCMP
725: fi
726: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
727: AC_FUNC_FSEEKO
728: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
729: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
730: AC_DECL_SYS_SIGLIST
731: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
732: AC_CHECK_FUNCS(expm1 log1p)
733: AC_REPLACE_FUNCS(rint ecvt)
734: dnl No check for select, because our replacement is no good under
735: dnl anything but DOS
736: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
737: AC_FUNC_FNMATCH
738: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
739: AC_CHECK_FUNCS(mmap sysconf getpagesize)
740: AM_PATH_LISPDIR
741:
742: kernel_fi=kernl${wordsize}${bytesex}.fi
743: include_fi=kernl${wordsize}${bytesex}${EC}.fi
744: AC_SUBST(kernel_fi)
745: AC_SUBST(include_fi)
746:
747: #this breaks bindists
748: #dnl replace srource directory by absolute value
749: #if test $srcdir = "."; then srcdir=`pwd`
750: #fi
751:
752: AC_SUBST(machine)
753: AC_CONFIG_FILES([
754: Makefile
755: Makedist
756: gforthmi
757: vmgen
758: machpc.fs
759: envos.fs
760: engine/Makefile
761: doc/version.texi
762: build-ec ])
763: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
764: chmod +x gforthmi
765: chmod +x vmgen
766: chmod +x build-ec
767: test -d kernel||mkdir kernel]],[[]])
768: AC_OUTPUT
769:
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