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