Annotation of gforth/configure.in, revision 1.168
1.1 anton 1: dnl Process this file with autoconf to produce a configure script.
1.20 anton 2:
1.160 pazsan 3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006 Free Software Foundation, Inc.
1.20 anton 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
1.74 anton 19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.20 anton 20:
1.121 anton 21:
1.34 anton 22: dnl We use some automake macros here,
23: dnl but don't use automake for creating Makefile.in
1.164 pazsan 24: AC_INIT([gforth],[0.6.2-20060527],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
1.113 anton 25: AC_PREREQ(2.54)
1.47 anton 26: #snapshots have numbers major.minor.release-YYYYMMDD
1.92 anton 27: #note that lexicographic ordering must be heeded.
1.47 anton 28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
1.160 pazsan 29: UPDATED="April 09, 2006"
1.84 anton 30: AC_SUBST(UPDATED)
1.94 anton 31: AC_CONFIG_HEADERS(engine/config.h)
1.14 anton 32:
1.121 anton 33: #suppress the "-g -O2" default
34: test "$CFLAGS" || CFLAGS=-O2
35:
1.1 anton 36: AC_ARG_ENABLE(force-reg,
1.149 anton 37: AC_HELP_STRING([--enable-force-reg],
38: [ Use explicit register declarations if they appear in
1.1 anton 39: the machine.h file. This can cause a good speedup,
40: but also incorrect code with some gcc versions on
1.149 anton 41: some processors (default disabled).]),
42: ,enable_force_reg=no)
43: test "$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:
1.145 pazsan 46: AC_ARG_ENABLE(force-ll,
1.149 anton 47: AC_HELP_STRING([--enable-force-ll],
48: [ Use explicit long long declarations if they appear in
1.145 pazsan 49: the machine.h file. This can cause a good speedup,
50: but also incorrect code with some gcc versions on
1.149 anton 51: some processors (default disabled).]),
52: ,enable_force_ll=no)
53: test "$enable_force_ll" = "no"||
54: AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
1.147 anton 55:
56: AC_ARG_ENABLE(gcc-pr15242-workaround,
57: AC_HELP_STRING([--disable-gcc-pr15242-workaround],[Disables
58: dynamic code generation on some versions of gcc
59: (slowdown~2 on Athlon) and causes slower building
60: of gforth (but gforth speedups) on others.
61: (default enabled)]),
62: ,enable_gcc_pr15242_workaround=yes)
63: test "$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:
1.150 pazsan 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 "$enable_force_cdiv" = "no"||
73: AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
74:
1.149 anton 75: AC_SUBST(PROFEXES)
76: AC_SUBST(PROFOBJS)
1.135 anton 77: AC_ARG_ENABLE(prof,
1.149 anton 78: AC_HELP_STRING([--enable-prof],
79: [ Build gforth-prof, which outputs frequently occuring
80: sequences of primitives.]),
81: ,enable_prof=no)
82: if test "$enable_prof" = "no"; then
83: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
84: fi
1.1 anton 85:
1.9 pazsan 86: AC_ARG_WITH(debug,
1.122 pazsan 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.],
1.9 pazsan 91: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
1.122 pazsan 92:
1.104 anton 93: dnl PEEPHOLE="yes"
94: dnl AC_ARG_WITH(peephole,
95: dnl [ --with-peephole Enable peephole optimization (default)
96: dnl --without-peephole disables peephole optimization. Creates smaller,
97: dnl but slower images.],
98: dnl PEEPHOLE="$withval")
99:
1.167 pazsan 100: AC_ARG_ENABLE(ec,
101: AC_HELP_STRING([--enable-ec],
1.168 ! pazsan 102: [ Build gforth for systems without OS.]),
1.167 pazsan 103: ,enable_ec=no)
104: if test "$enable_ec" = "yes"; then
1.168 ! pazsan 105: echo "defining standalone system"
! 106: AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
1.167 pazsan 107: EC_MODE="true"
108: else
1.168 ! pazsan 109: echo "defining hosted system"
1.167 pazsan 110: EC_MODE="false"
111: fi
112:
1.104 anton 113: #variables mentioned in INSTALL
1.123 anton 114: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104 anton 115: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
1.151 anton 116: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
1.104 anton 117: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
118: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
119: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
120: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
121: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
122: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
123: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
124: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144 pazsan 125: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123 anton 126: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
127: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.166 anton 128: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
1.82 anton 129:
1.96 anton 130: #set up feature test macros, so the tests get them right:
131: # turn on all POSIX, SUSv3, and GNU features if available
1.97 anton 132: AC_GNU_SOURCE
133: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
134:
135: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
136: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
137: dnl but not for _XOPEN_SOURCE)
138: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
139: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
140: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96 anton 141: # turn on large file support with 64-bit off_t where available
1.105 anton 142: AC_SYS_LARGEFILE
143: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
144: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96 anton 145:
1.82 anton 146: #currently we force direct threading this way. Eventually we should
147: #setup in the arch and engine files right
1.16 anton 148:
1.15 pazsan 149: AC_PROG_CC
150:
1.92 anton 151: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9 pazsan 152:
1.15 pazsan 153: AC_SUBST(CC)
1.9 pazsan 154: AC_SUBST(DEBUGFLAG)
1.167 pazsan 155: AC_SUBST(EC_MODE)
1.7 anton 156:
1.128 pazsan 157: AC_MSG_CHECKING(make type)
1.155 pazsan 158: make_type=`make -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
1.128 pazsan 159:
160: GNUMAKE='#'
161: test "$make_type" = "GNU Make" && GNUMAKE=''
162:
163: AC_MSG_RESULT($make_type)
164:
165: AC_SUBST(GNUMAKE)
166:
1.50 jwilke 167: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
168: OLDLDFLAGS=$LDFLAGS
169: LDFLAGS="$LDFLAGS -export-dynamic"
1.69 anton 170: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
171: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
172: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50 jwilke 173: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
174: AC_MSG_RESULT($ac_export_dynamic)
175:
1.1 anton 176: #terminology is a bit unusual here: The host is the system on which
177: #gforth will run; the system on which configure will run is the `build'
178: AC_CANONICAL_HOST
179: case "$host_cpu" in
1.136 anton 180: arm*)
181: machine=arm
182: CFLAGS="$CFLAGS -fomit-frame-pointer"
183: if test -z $no_dynamic_default; then
184: no_dynamic_default=1
185: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
186: fi
187: ;;
1.1 anton 188: hppa*)
1.34 anton 189: machine=hppa
1.46 anton 190: $srcdir/mkinstalldirs arch/hppa
1.87 pazsan 191: AC_LIBOBJ(../arch/hppa/cache)
1.134 anton 192: #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
193: LDFLAGS="$LDFLAGS -Xlinker -N"
1.47 anton 194: LIBS="$LIBS -L/lib/pa1.1/"
1.1 anton 195: ;;
196: sparc*)
1.34 anton 197: machine=sparc
1.1 anton 198: ;;
1.31 anton 199: i386)
1.34 anton 200: machine=386
1.16 anton 201: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31 anton 202: ;;
203: i486)
1.34 anton 204: machine=386
1.31 anton 205: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
206: ;;
1.77 anton 207: i*86)
1.34 anton 208: machine=386
1.55 anton 209: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56 pazsan 210: CFLAGS_1="$CFLAGS"
1.87 pazsan 211: CFLAGS="$CFLAGS -march=pentium"
1.56 pazsan 212: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1 anton 213: ;;
1.133 anton 214: x86_64)
215: machine=amd64
216: ;;
1.136 anton 217: ia64*)
218: machine=ia64
219: AC_LIBOBJ(../arch/ia64/flush_icache_block)
220: test "$skipcode" || skipcode="nop.i 0"
221: #".skip 16" passes the test below,
222: # but gives an assembler error in engine
223: ;;
1.26 pazsan 224: m68k)
1.34 anton 225: machine=m68k
1.32 pazsan 226: CFLAGS="$CFLAGS -fomit-frame-pointer"
227: if test "$host_os" = "nextstep3"
228: then
1.87 pazsan 229: AC_LIBOBJ(termios)
1.32 pazsan 230: fi
1.26 pazsan 231: ;;
1.1 anton 232: mips*)
1.34 anton 233: machine=mips
1.92 anton 234: #dynamic native code has the following problems on MIPS:
235: #
236: #1) J/JAL seems relocatable, but is are only
237: #relocatable within a 256MB-segment. While we try to
238: #get the linker to arrange this, there is no guarantee
239: #that this will succeed (and if the user uses a lot of
240: #memory, it is likely to fail).
241: #
242: #2) The way we generate dynamic native code may
243: #violate MIPS architectural restrictions (in
244: #particular, the delay slots of LW, MFLO, etc.)
245: #
246: #Therefore we disable dynamic native code by default:
1.136 anton 247: if test -z $no_dynamic_default; then
248: no_dynamic_default=1
249: AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
250: fi
1.1 anton 251: ;;
1.9 pazsan 252: alpha*)
1.34 anton 253: machine=alpha
1.58 anton 254: #full IEEE FP support for more uniformity across platforms:
255: CFLAGS="$CFLAGS -mieee"
1.9 pazsan 256: ;;
1.69 anton 257: power*|rs6000)
1.34 anton 258: machine=power
1.46 anton 259: $srcdir/mkinstalldirs arch/power
1.138 anton 260: AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103 anton 261: #long long is broken on (at least) gcc-2.95.* for PPC
1.165 anton 262: test x$ac_cv_sizeof_long_long = x &&
263: ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
264: ac_cv_sizeof_long_long=0
1.31 anton 265: ;;
1.1 anton 266: *)
1.92 anton 267: AC_MSG_WARN([Using a generic machine description])
268: AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
269: AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34 anton 270: machine=generic
1.97 anton 271: #I-cache flushing would be needed for dynamic code generation
1.136 anton 272: if test -z $no_dynamic_default; then
273: no_dynamic_default=1
274: AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
275: fi
1.1 anton 276: esac
1.10 anton 277: AC_SUBST(host)
1.151 anton 278:
279: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
280: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
281: [number of registers in the default stack cache state for gforth-fast and gforth-native])
1.146 pazsan 282:
283: if test "${enable_force_ll+set}" = set; then
284: ac_includes_default="$ac_includes_default
285: #include \"arch/generic/128bit.h\""
286: fi
1.103 anton 287:
288: dnl the following macro produces a warning with autoconf-2.1
289: AC_CHECK_SIZEOF(char *)
290: case "$ac_cv_sizeof_char_p" in
291: 2)
292: wordsize=16
293: ;;
294: 4)
295: wordsize=32
296: ;;
297: 8)
298: wordsize=64
299: ;;
300: esac
301:
302: AC_CHECK_SIZEOF(char)
303: AC_CHECK_SIZEOF(short)
304: AC_CHECK_SIZEOF(int)
305: AC_CHECK_SIZEOF(long)
306: AC_CHECK_SIZEOF(long long)
307: AC_CHECK_SIZEOF(intptr_t)
308: AC_CHECK_SIZEOF(int128_t)
1.144 pazsan 309: AC_CHECK_SIZEOF(uint128_t)
1.103 anton 310:
311: AC_MSG_CHECKING([for a C type for cells])
312: ac_cv_int_type_cell=none
313: case "$ac_cv_sizeof_char_p" in
314: $ac_cv_sizeof_int)
315: ac_cv_int_type_cell=int
316: ;;
317: $ac_cv_sizeof_short)
318: ac_cv_int_type_cell=short
319: ;;
320: $ac_cv_sizeof_char)
321: ac_cv_int_type_cell=char
322: ;;
323: $ac_cv_sizeof_long)
324: ac_cv_int_type_cell=long
325: ;;
326: $ac_cv_sizeof_long_long)
327: ac_cv_int_type_cell="long long"
328: ;;
329: $ac_cv_sizeof_intptr_t)
330: ac_cv_int_type_cell="intptr_t"
331: ;;
332: $ac_cv_sizeof_int128_t)
333: ac_cv_int_type_cell="int128_t"
334: ;;
335: esac
336: AC_MSG_RESULT($ac_cv_int_type_cell)
337: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
338:
1.153 pazsan 339: AC_MSG_CHECKING([for a C type for wydes])
340: ac_cv_wyde_type_cell=none
341: case 2 in
342: $ac_cv_sizeof_int)
343: ac_cv_wyde_type_cell=int
344: ;;
345: $ac_cv_sizeof_short)
346: ac_cv_wyde_type_cell=short
347: ;;
348: $ac_cv_sizeof_char)
349: ac_cv_wyde_type_cell=char
350: ;;
351: $ac_cv_sizeof_long)
352: ac_cv_wyde_type_cell=long
353: ;;
354: $ac_cv_sizeof_long_long)
355: ac_cv_wyde_type_cell="long long"
356: ;;
357: $ac_cv_sizeof_intptr_t)
358: ac_cv_wyde_type_cell="intptr_t"
359: ;;
360: $ac_cv_sizeof_int128_t)
361: ac_cv_wyde_type_cell="int128_t"
362: ;;
363: esac
364: AC_MSG_RESULT($ac_cv_wyde_type_cell)
365: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
366:
367: AC_MSG_CHECKING([for a C type for tetrabytes])
368: ac_cv_tetrabyte_type_cell=none
369: case 4 in
370: $ac_cv_sizeof_int)
371: ac_cv_tetrabyte_type_cell=int
372: ;;
373: $ac_cv_sizeof_short)
374: ac_cv_tetrabyte_type_cell=short
375: ;;
376: $ac_cv_sizeof_char)
377: ac_cv_tetrabyte_type_cell=char
378: ;;
379: $ac_cv_sizeof_long)
380: ac_cv_tetrabyte_type_cell=long
381: ;;
382: $ac_cv_sizeof_long_long)
383: ac_cv_tetrabyte_type_cell="long long"
384: ;;
385: $ac_cv_sizeof_intptr_t)
386: ac_cv_tetrabyte_type_cell="intptr_t"
387: ;;
388: $ac_cv_sizeof_int128_t)
389: ac_cv_tetrabyte_type_cell="int128_t"
390: ;;
391: esac
392: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
393: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
394:
1.103 anton 395: AC_MSG_CHECKING([for a C type for double-cells])
396: ac_cv_int_type_double_cell=none
397: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
398: $ac_cv_sizeof_short)
399: ac_cv_int_type_double_cell=short
400: ;;
401: $ac_cv_sizeof_int)
402: ac_cv_int_type_double_cell=int
403: ;;
404: $ac_cv_sizeof_long)
405: ac_cv_int_type_double_cell=long
406: ;;
407: $ac_cv_sizeof_long_long)
408: ac_cv_int_type_double_cell="long long"
409: ;;
410: $ac_cv_sizeof_intptr_t)
411: ac_cv_int_type_double_cell="intptr_t"
412: ;;
413: $ac_cv_sizeof_int128_t)
414: ac_cv_int_type_double_cell="int128_t"
415: ;;
416: esac
417: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144 pazsan 418:
419: AC_MSG_CHECKING([for a C type for unsigned double-cells])
420: ac_cv_int_type_double_ucell=none
421: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
422: $ac_cv_sizeof_short)
423: ac_cv_int_type_double_ucell="unsigned short"
424: ;;
425: $ac_cv_sizeof_int)
426: ac_cv_int_type_double_ucell="unsigned int"
427: ;;
428: $ac_cv_sizeof_long)
429: ac_cv_int_type_double_ucell="unsigned long"
430: ;;
431: $ac_cv_sizeof_long_long)
432: ac_cv_int_type_double_ucell="unsigned long long"
433: ;;
434: $ac_cv_sizeof_intptr_t)
435: ac_cv_int_type_double_ucell="unsigned intptr_t"
436: ;;
437: $ac_cv_sizeof_uint128_t)
438: ac_cv_int_type_double_ucell="uint128_t"
439: ;;
440: esac
441: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
442:
443: if test "$ac_cv_int_type_double_cell" = none || \
444: test "$ac_cv_int_type_double_ucell" = none
445: then
1.103 anton 446: AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
447: AC_LIBOBJ(dblsub)
448: AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
449: else
450: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144 pazsan 451: AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103 anton 452: fi
453:
454: AC_TYPE_OFF_T
455: AC_CHECK_SIZEOF(off_t)
456: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
457: ac_small_off_t=$?
458: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1 anton 459:
1.109 anton 460: ENGINE_FLAGS=
461: AC_SUBST(ENGINE_FLAGS)
462:
463: # Try if GCC understands -fno-gcse
464:
465: AC_MSG_CHECKING([if $CC understands -fno-gcse])
466: CFLAGS_1="$CFLAGS"
467: CFLAGS="$CFLAGS -fno-gcse"
468: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
469: CFLAGS="$CFLAGS_1"
470: AC_MSG_RESULT($ac_nogcse)
471:
472: # Try if GCC understands -fno-strict-aliasing
473: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
474: CFLAGS_1="$CFLAGS"
475: CFLAGS="$CFLAGS -fno-strict-aliasing"
476: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
477: CFLAGS="$CFLAGS_1"
478: AC_MSG_RESULT($ac_nostrictaliasing)
479:
1.123 anton 480: # Try if GCC understands -fno-crossjumping
481: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88 pazsan 482: CFLAGS_1="$CFLAGS"
1.123 anton 483: CFLAGS="$CFLAGS -fno-crossjumping"
1.125 anton 484: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109 anton 485: CFLAGS="$CFLAGS_1"
1.124 pazsan 486: AC_MSG_RESULT($ac_nocrossjumping)
1.88 pazsan 487:
1.137 pazsan 488: # Try if GCC understands -fno-reorder-blocks
489: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
490: CFLAGS_1="$CFLAGS"
491: CFLAGS="$CFLAGS -fno-reorder-blocks"
492: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
493: CFLAGS="$CFLAGS_1"
494: AC_MSG_RESULT($ac_noreorder_blocks)
495:
1.130 anton 496: # Try if GCC understands __attribute__((unused))
497: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
498: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
499: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
500: AC_MSG_RESULT($MAYBE_UNUSED)
501:
1.66 anton 502: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61 anton 503: AC_SUBST(asm_fs)
504:
1.66 anton 505: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61 anton 506: AC_SUBST(disasm_fs)
507:
1.116 anton 508: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114 anton 509:
1.39 pazsan 510: case "$host_os" in
1.157 pazsan 511: *win32*)
512: # !!!FIXME!!! problems with cygwin and ';' as path separator
1.108 anton 513: DIRSEP="\\\\"
1.127 anton 514: PATHSEP=";"
1.142 anton 515: #we want the builtins of command.com/cmd.exe and its
516: # handling of .com files.
517: #$COMSPEC contains the name of the Windows shell;
518: # the ./ is there, because the bash does not recognize
519: # absolute DOS filenames
520: DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39 pazsan 521: ;;
1.97 anton 522: *darwin*)
523: #Darwin uses some funny preprocessor by default; eliminate it:
1.127 anton 524: AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120 anton 525: CFLAGS="$CFLAGS -no-cpp-precomp"
1.98 anton 526: DIRSEP="/"
1.127 anton 527: PATHSEP=":"
1.141 anton 528: DEFAULTSYSTEMPREFIX=""
1.98 anton 529: ;;
1.39 pazsan 530: *)
1.88 pazsan 531: DIRSEP="/"
1.127 anton 532: PATHSEP=":"
1.141 anton 533: DEFAULTSYSTEMPREFIX=""
1.39 pazsan 534: ;;
535: esac
1.88 pazsan 536: AC_SUBST(DIRSEP)
1.89 pazsan 537: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127 anton 538: AC_SUBST(PATHSEP)
539: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141 anton 540: AC_SUBST(DEFAULTSYSTEMPREFIX)
541: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39 pazsan 542:
1.1 anton 543: dnl Now a little support for DOS/DJGCC
1.30 pazsan 544: AC_SUBST(GFORTH_EXE)
545: GFORTH_EXE=""
1.48 anton 546: AC_SUBST(GFORTHFAST_EXE)
547: GFORTHFAST_EXE=""
1.83 anton 548: AC_SUBST(GFORTHITC_EXE)
549: GFORTHITC_EXE=""
1.30 pazsan 550: AC_SUBST(GFORTHDITC_EXE)
551: GFORTHDITC_EXE=""
1.27 anton 552:
553: AC_SUBST(FORTHSIZES)
1.24 anton 554:
1.104 anton 555: dnl if test "$PEEPHOLE" = "yes"
556: dnl then
557: dnl PEEPHOLEFLAG="true"
558: dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
559: dnl else
560: dnl PEEPHOLEFLAG="false"
561: dnl fi
562: PEEPHOLEFLAG="true"
1.79 pazsan 563: AC_SUBST(PEEPHOLEFLAG)
564:
1.1 anton 565: dnl copy commands for systems that don't have links
1.29 pazsan 566: AC_SUBST(LINK_KERNL)
567: LINK_KERNL=""
1.1 anton 568:
569: #if test $host_os=dos
570: #then
571: # echo Configuring for DOS!!!
572: # MAKE_EXE="coff2exe gforth"
1.29 pazsan 573: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1 anton 574: #fi
575:
576: dnl the following macro produces a warning with autoconf-2.1
577: AC_C_BIGENDIAN
1.23 pazsan 578: AC_SUBST(KERNEL)
1.1 anton 579: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
580: if test $ac_cv_c_bigendian = yes; then
581: bytesex=b
1.23 pazsan 582: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1 anton 583: else
584: bytesex=l
1.23 pazsan 585: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1 anton 586: fi
587:
1.91 anton 588: #check how to do asm(".skip 16")
1.148 anton 589: echo "CFLAGS=$CFLAGS"
590: echo "ac_link=$ac_link"
1.92 anton 591: AC_MSG_CHECKING([if and how we can waste code space])
1.136 anton 592: if test -z "$skipcode"; then
1.148 anton 593: skipcode=no
594: CFLAGS_1="$CFLAGS"
595: CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136 anton 596: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
597: do
1.91 anton 598: AC_TRY_RUN(
1.136 anton 599: [int foo(int,int,int);
1.91 anton 600: main()
601: {
1.136 anton 602: exit(foo(0,0,0)!=16);
1.91 anton 603: }
1.136 anton 604: int foo(int x, int y, int z)
1.91 anton 605: {
1.136 anton 606: static void *labels[]={&&label1, &&label2};
1.91 anton 607: if (x) {
1.136 anton 608: y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91 anton 609: label1:
1.148 anton 610: asm("$i"); /* or ".space 16" or somesuch */
1.136 anton 611: label2: ;
612: }
613: {
614: if (y) goto *labels[z]; /* workaround for gcc PR12108 */
615: return labels[1]-labels[0];
1.91 anton 616: }
1.136 anton 617: }]
1.92 anton 618: ,skipcode=$i; break
619: ,,)
1.136 anton 620: done
1.148 anton 621: CFLAGS=$CFLAGS_1
1.136 anton 622: fi
1.92 anton 623: AC_MSG_RESULT($skipcode)
624: if test "$skipcode" = no
625: then
1.136 anton 626: if test -z $no_dynamic_default; then
627: no_dynamic_default=1
628: AC_MSG_WARN(Disabling default dynamic native code generation)
629: fi
1.92 anton 630: AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
631: else
632: AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
633: fi
1.91 anton 634:
1.136 anton 635: test "$no_dynamic_default" || no_dynamic_default=0
1.92 anton 636: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91 anton 637:
1.1 anton 638: dnl Checks for programs.
639: AC_PROG_LN_S
1.95 anton 640: AC_PROG_INSTALL
1.163 pazsan 641: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
1.1 anton 642:
643: dnl Checks for library functions
1.2 anton 644: dnl This check is just for making later checks link with libm.
645: dnl using sin here is no good idea since it is built-into gcc and typechecked
646: AC_CHECK_LIB(m,asin)
1.31 anton 647: AC_CHECK_LIB(dl,dlopen)
1.152 pazsan 648: dnl check for libffi 2.x
649: AC_CHECK_LIB(ffi,ffi_call)
650: if test $ac_cv_lib_ffi_ffi_call = yes
651: then
652: LIBFFIFLAG="true"
653: FFCALLFLAG="false"
654: OLDCALLFLAG="false"
655: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
656: else
1.124 pazsan 657: dnl check for ffcall libraries
658: dnl unfortunately, these four calls are separated out into a library each.
659: AC_CHECK_LIB(avcall,__builtin_avcall)
660: AC_CHECK_LIB(callback,__vacall_r)
661: AC_CHECK_LIB(vacall,vacall)
662: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.152 pazsan 663: LIBFFIFLAG="false"
1.125 anton 664: FFCALLFLAG="false"
1.129 pazsan 665: OLDCALLFLAG="true"
666: 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])
667: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.152 pazsan 668: fi
669: AC_SUBST(LIBFFIFLAG)
1.125 anton 670: AC_SUBST(FFCALLFLAG)
1.129 pazsan 671: AC_SUBST(OLDCALLFLAG)
1.32 pazsan 672: if test "$host_os" != "nextstep3"
673: then
674: AC_FUNC_MEMCMP
675: fi
1.25 pazsan 676: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97 anton 677: AC_FUNC_FSEEKO
678: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111 anton 679: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19 anton 680: AC_DECL_SYS_SIGLIST
1.138 anton 681: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90 anton 682: AC_CHECK_FUNCS(expm1 log1p)
683: AC_REPLACE_FUNCS(rint ecvt)
1.1 anton 684: dnl No check for select, because our replacement is no good under
685: dnl anything but DOS
1.62 anton 686: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63 anton 687: AC_FUNC_FNMATCH
1.87 pazsan 688: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28 anton 689: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34 anton 690: AM_PATH_LISPDIR
1.1 anton 691:
1.23 pazsan 692: kernel_fi=kernl${wordsize}${bytesex}.fi
693: AC_SUBST(kernel_fi)
1.50 jwilke 694:
1.76 anton 695: #this breaks bindists
696: #dnl replace srource directory by absolute value
697: #if test $srcdir = "."; then srcdir=`pwd`
698: #fi
1.8 anton 699:
1.34 anton 700: AC_SUBST(machine)
1.95 anton 701: AC_CONFIG_FILES([
1.31 anton 702: Makefile
1.45 pazsan 703: Makedist
1.43 anton 704: gforthmi
1.80 anton 705: vmgen
1.79 pazsan 706: machpc.fs
1.159 pazsan 707: envos.fs
1.35 anton 708: engine/Makefile
1.161 pazsan 709: doc/version.texi
710: build-ec ])
1.95 anton 711: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43 anton 712: chmod +x gforthmi
1.80 anton 713: chmod +x vmgen
1.162 pazsan 714: chmod +x build-ec
1.95 anton 715: test -d kernel||mkdir kernel]],[[]])
716: AC_OUTPUT
1.44 anton 717:
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