Annotation of gforth/configure.in, revision 1.145

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
1.143     anton       3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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
1.136     anton      24: AC_INIT([gforth],[0.6.2-20030910],[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!
1.136     anton      29: UPDATED="September 10, 2003"
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,
                     37: [  --enable-force-reg    Use explicit register declarations if they appear in
                     38:                          the machine.h file. This can cause a good speedup,
                     39:                          but also incorrect code with some gcc versions on
                     40:                          some processors (default disabled).],
1.89      pazsan     41: 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)]))
1.145   ! pazsan     42: AC_ARG_ENABLE(force-ll,
        !            43: [  --enable-force-ll     Use explicit long long declarations if they appear in
        !            44:                          the machine.h file. This can cause a good speedup,
        !            45:                          but also incorrect code with some gcc versions on
        !            46:                          some processors (default disabled).],
        !            47: 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)]))
1.135     anton      48: AC_SUBST(PROFEXES)
                     49: AC_SUBST(PROFOBJS)
                     50: AC_ARG_ENABLE(prof,
                     51: [  --enable-prof          Build gforth-prof, which outputs frequently occuring
                     52:                           sequences of primitives.],
                     53: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o")
1.1       anton      54: 
1.9       pazsan     55: AC_ARG_WITH(debug,
1.122     pazsan     56: [  --with-debug                  specifies option -g to compile with debug info
                     57:   --without-debug        omits the -g switch and creates smaller images on
                     58:                          machines where "strip" has problems with gcc style
                     59:                          debugging informations.],
1.9       pazsan     60: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
1.122     pazsan     61: 
1.104     anton      62: dnl PEEPHOLE="yes"
                     63: dnl AC_ARG_WITH(peephole,
                     64: dnl [  --with-peephole Enable peephole optimization (default)
                     65: dnl   --without-peephole       disables peephole optimization. Creates smaller,
                     66: dnl                    but slower images.],
                     67: dnl PEEPHOLE="$withval")
                     68: 
                     69: #variables mentioned in INSTALL
1.123     anton      70: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton      71: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
                     72: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
                     73: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                     74: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                     75: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                     76: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                     77: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                     78: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                     79: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan     80: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton      81: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                     82: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.136     anton      83: AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
1.82      anton      84: 
1.96      anton      85: #set up feature test macros, so the tests get them right:
                     86: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton      87: AC_GNU_SOURCE
                     88: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                     89: 
                     90: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                     91: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                     92: dnl but not for _XOPEN_SOURCE)
                     93: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                     94: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                     95: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton      96: # turn on large file support with 64-bit off_t where available
1.105     anton      97: AC_SYS_LARGEFILE
                     98: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                     99: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     100: 
1.82      anton     101: #currently we force direct threading this way.  Eventually we should
                    102: #setup in the arch and engine files right
1.16      anton     103: 
1.15      pazsan    104: AC_PROG_CC
                    105: 
1.92      anton     106: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    107: 
1.15      pazsan    108: AC_SUBST(CC)
1.9       pazsan    109: AC_SUBST(DEBUGFLAG)
1.7       anton     110: 
1.128     pazsan    111: AC_MSG_CHECKING(make type)
                    112: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
                    113: 
                    114: GNUMAKE='#'
                    115: test "$make_type" = "GNU Make" && GNUMAKE=''
                    116: 
                    117: AC_MSG_RESULT($make_type)
                    118: 
                    119: AC_SUBST(GNUMAKE)
                    120: 
1.50      jwilke    121: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    122: OLDLDFLAGS=$LDFLAGS
                    123: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     124: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    125: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    126: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    127: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    128: AC_MSG_RESULT($ac_export_dynamic)
                    129: 
1.1       anton     130: #terminology is a bit unusual here: The host is the system on which
                    131: #gforth will run; the system on which configure will run is the `build'
                    132: AC_CANONICAL_HOST
                    133: case "$host_cpu" in
1.136     anton     134:        arm*)
                    135:                machine=arm
                    136:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    137:                if test -z $no_dynamic_default; then
                    138:                    no_dynamic_default=1
                    139:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    140:                fi
                    141:                ;;
1.1       anton     142:        hppa*)
1.34      anton     143:                machine=hppa
1.46      anton     144:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    145:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     146:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    147:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     148:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     149:                ;;
                    150:        sparc*)
1.34      anton     151:                machine=sparc
1.1       anton     152:                ;;
1.31      anton     153:        i386)
1.34      anton     154:                machine=386
1.16      anton     155:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     156:                ;;
                    157:        i486)
1.34      anton     158:                machine=386
1.31      anton     159:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    160:                ;;
1.77      anton     161:        i*86)
1.34      anton     162:                machine=386
1.55      anton     163:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    164:                CFLAGS_1="$CFLAGS"
1.87      pazsan    165:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    166:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     167:                ;;
1.133     anton     168:        x86_64)
                    169:                machine=amd64
1.144     pazsan    170:                ac_includes_default="$ac_includes_default
                    171: #include \"arch/generic/128bit.h\""
1.133     anton     172:                ;;
1.136     anton     173:        ia64*)
                    174:                machine=ia64
                    175:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    176:                test "$skipcode" || skipcode="nop.i 0"
                    177:                #".skip 16" passes the test below,
                    178:                # but gives an assembler error in engine
                    179:                ;;
1.26      pazsan    180:         m68k)
1.34      anton     181:                machine=m68k
1.32      pazsan    182:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    183:                if test "$host_os" = "nextstep3"
                    184:                then
1.87      pazsan    185:                        AC_LIBOBJ(termios)
1.32      pazsan    186:                fi
1.26      pazsan    187:                ;;
1.1       anton     188:        mips*)
1.34      anton     189:                machine=mips
1.92      anton     190:                #dynamic native code has the following problems on MIPS:
                    191:                #
                    192:                #1) J/JAL seems relocatable, but is are only
                    193:                #relocatable within a 256MB-segment.  While we try to
                    194:                #get the linker to arrange this, there is no guarantee
                    195:                #that this will succeed (and if the user uses a lot of
                    196:                #memory, it is likely to fail).
                    197:                #
                    198:                #2) The way we generate dynamic native code may
                    199:                #violate MIPS architectural restrictions (in
                    200:                #particular, the delay slots of LW, MFLO, etc.)
                    201:                #
                    202:                #Therefore we disable dynamic native code by default:
1.136     anton     203:                if test -z $no_dynamic_default; then
                    204:                    no_dynamic_default=1
                    205:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    206:                fi
1.1       anton     207:                ;;
1.9       pazsan    208:        alpha*)
1.34      anton     209:                machine=alpha
1.58      anton     210:                #full IEEE FP support for more uniformity across platforms:
                    211:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    212:                ;;
1.69      anton     213:        power*|rs6000)
1.34      anton     214:                machine=power
1.46      anton     215:                $srcdir/mkinstalldirs arch/power
1.138     anton     216:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     217:                #long long is broken on (at least) gcc-2.95.* for PPC
1.104     anton     218:                test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
1.31      anton     219:                ;;
1.1       anton     220:        *)
1.92      anton     221:                AC_MSG_WARN([Using a generic machine description])
                    222:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    223:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     224:                machine=generic
1.97      anton     225:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     226:                if test -z $no_dynamic_default; then
                    227:                    no_dynamic_default=1
                    228:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    229:                fi
1.1       anton     230: esac
1.10      anton     231: AC_SUBST(host)
1.103     anton     232: 
                    233: dnl the following macro produces a warning with autoconf-2.1
                    234: AC_CHECK_SIZEOF(char *)
                    235: case "$ac_cv_sizeof_char_p" in
                    236:   2)
                    237:     wordsize=16
                    238:     ;;
                    239:   4)
                    240:     wordsize=32
                    241:     ;;
                    242:   8)
                    243:     wordsize=64
                    244:     ;;
                    245: esac
                    246: 
                    247: AC_CHECK_SIZEOF(char)
                    248: AC_CHECK_SIZEOF(short)
                    249: AC_CHECK_SIZEOF(int)
                    250: AC_CHECK_SIZEOF(long)
                    251: AC_CHECK_SIZEOF(long long)
                    252: AC_CHECK_SIZEOF(intptr_t)
                    253: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    254: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     255: 
                    256: AC_MSG_CHECKING([for a C type for cells])
                    257: ac_cv_int_type_cell=none
                    258: case "$ac_cv_sizeof_char_p" in
                    259:   $ac_cv_sizeof_int)
                    260:     ac_cv_int_type_cell=int
                    261:     ;;
                    262:   $ac_cv_sizeof_short)
                    263:     ac_cv_int_type_cell=short
                    264:     ;;
                    265:   $ac_cv_sizeof_char)
                    266:     ac_cv_int_type_cell=char
                    267:     ;;
                    268:   $ac_cv_sizeof_long)
                    269:     ac_cv_int_type_cell=long
                    270:     ;;
                    271:   $ac_cv_sizeof_long_long)
                    272:     ac_cv_int_type_cell="long long"
                    273:     ;;
                    274:   $ac_cv_sizeof_intptr_t)
                    275:     ac_cv_int_type_cell="intptr_t"
                    276:     ;;
                    277:   $ac_cv_sizeof_int128_t)
                    278:     ac_cv_int_type_cell="int128_t"
                    279:     ;;
                    280: esac
                    281: AC_MSG_RESULT($ac_cv_int_type_cell)
                    282: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    283: 
                    284: AC_MSG_CHECKING([for a C type for double-cells])
                    285: ac_cv_int_type_double_cell=none
                    286: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    287:   $ac_cv_sizeof_short)
                    288:     ac_cv_int_type_double_cell=short
                    289:     ;;
                    290:   $ac_cv_sizeof_int)
                    291:     ac_cv_int_type_double_cell=int
                    292:     ;;
                    293:   $ac_cv_sizeof_long)
                    294:     ac_cv_int_type_double_cell=long
                    295:     ;;
                    296:   $ac_cv_sizeof_long_long)
                    297:     ac_cv_int_type_double_cell="long long"
                    298:     ;;
                    299:   $ac_cv_sizeof_intptr_t)
                    300:     ac_cv_int_type_double_cell="intptr_t"
                    301:     ;;
                    302:   $ac_cv_sizeof_int128_t)
                    303:     ac_cv_int_type_double_cell="int128_t"
                    304:     ;;
                    305: esac
                    306: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    307: 
                    308: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    309: ac_cv_int_type_double_ucell=none
                    310: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    311:   $ac_cv_sizeof_short)
                    312:     ac_cv_int_type_double_ucell="unsigned short"
                    313:     ;;
                    314:   $ac_cv_sizeof_int)
                    315:     ac_cv_int_type_double_ucell="unsigned int"
                    316:     ;;
                    317:   $ac_cv_sizeof_long)
                    318:     ac_cv_int_type_double_ucell="unsigned long"
                    319:     ;;
                    320:   $ac_cv_sizeof_long_long)
                    321:     ac_cv_int_type_double_ucell="unsigned long long"
                    322:     ;;
                    323:   $ac_cv_sizeof_intptr_t)
                    324:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    325:     ;;
                    326:   $ac_cv_sizeof_uint128_t)
                    327:     ac_cv_int_type_double_ucell="uint128_t"
                    328:     ;;
                    329: esac
                    330: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    331: 
                    332: if test "$ac_cv_int_type_double_cell" = none || \
                    333:    test "$ac_cv_int_type_double_ucell" = none
                    334: then
1.103     anton     335:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    336:        AC_LIBOBJ(dblsub)
                    337:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    338: else
                    339:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    340:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     341: fi
                    342: 
                    343: AC_TYPE_OFF_T
                    344: AC_CHECK_SIZEOF(off_t)
                    345: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    346: ac_small_off_t=$?
                    347: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     348: 
1.109     anton     349: ENGINE_FLAGS=
                    350: AC_SUBST(ENGINE_FLAGS)
                    351: 
                    352: # Try if GCC understands -fno-gcse
                    353: 
                    354: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    355: CFLAGS_1="$CFLAGS"
                    356: CFLAGS="$CFLAGS -fno-gcse"
                    357: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    358: CFLAGS="$CFLAGS_1"
                    359: AC_MSG_RESULT($ac_nogcse)
                    360: 
                    361: # Try if GCC understands -fno-strict-aliasing
                    362: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    363: CFLAGS_1="$CFLAGS"
                    364: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    365: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    366: CFLAGS="$CFLAGS_1"
                    367: AC_MSG_RESULT($ac_nostrictaliasing)
                    368: 
1.123     anton     369: # Try if GCC understands -fno-crossjumping
                    370: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    371: CFLAGS_1="$CFLAGS"
1.123     anton     372: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     373: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     374: CFLAGS="$CFLAGS_1"
1.124     pazsan    375: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    376: 
1.137     pazsan    377: # Try if GCC understands -fno-reorder-blocks
                    378: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    379: CFLAGS_1="$CFLAGS"
                    380: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    381: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    382: CFLAGS="$CFLAGS_1"
                    383: AC_MSG_RESULT($ac_noreorder_blocks)
                    384: 
1.130     anton     385: # Try if GCC understands __attribute__((unused))
                    386: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    387: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    388: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    389: AC_MSG_RESULT($MAYBE_UNUSED)
                    390: 
1.66      anton     391: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     392: AC_SUBST(asm_fs)
                    393: 
1.66      anton     394: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     395: AC_SUBST(disasm_fs)
                    396: 
1.116     anton     397: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     398: 
1.39      pazsan    399: case "$host_os" in
1.107     anton     400:        *win32|cygwin)
1.108     anton     401:                DIRSEP="\\\\"
1.127     anton     402:                PATHSEP=";"
1.142     anton     403:                #we want the builtins of command.com/cmd.exe and its
                    404:                # handling of .com files.
                    405:                #$COMSPEC contains the name of the Windows shell;
                    406:                # the ./ is there, because the bash does not recognize
                    407:                # absolute DOS filenames
                    408:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    409:                ;;
1.97      anton     410:        *darwin*)
                    411:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     412:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     413:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     414:                DIRSEP="/"
1.127     anton     415:                PATHSEP=":"
1.141     anton     416:                DEFAULTSYSTEMPREFIX=""
1.98      anton     417:                ;;
1.39      pazsan    418:        *)
1.88      pazsan    419:                DIRSEP="/"
1.127     anton     420:                PATHSEP=":"
1.141     anton     421:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    422:                ;;
                    423: esac
1.88      pazsan    424: AC_SUBST(DIRSEP)
1.89      pazsan    425: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     426: AC_SUBST(PATHSEP)
                    427: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     428: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    429: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    430: 
1.1       anton     431: dnl Now a little support for DOS/DJGCC
1.30      pazsan    432: AC_SUBST(GFORTH_EXE)
                    433: GFORTH_EXE=""
1.48      anton     434: AC_SUBST(GFORTHFAST_EXE)
                    435: GFORTHFAST_EXE=""
1.83      anton     436: AC_SUBST(GFORTHITC_EXE)
                    437: GFORTHITC_EXE=""
1.30      pazsan    438: AC_SUBST(GFORTHDITC_EXE)
                    439: GFORTHDITC_EXE=""
1.27      anton     440: 
                    441: AC_SUBST(FORTHSIZES)
1.24      anton     442: 
1.104     anton     443: dnl if test "$PEEPHOLE" = "yes"
                    444: dnl then
                    445: dnl    PEEPHOLEFLAG="true"
                    446: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    447: dnl else
                    448: dnl    PEEPHOLEFLAG="false"
                    449: dnl fi
                    450: PEEPHOLEFLAG="true"
1.79      pazsan    451: AC_SUBST(PEEPHOLEFLAG)
                    452: 
1.1       anton     453: dnl copy commands for systems that don't have links
1.29      pazsan    454: AC_SUBST(LINK_KERNL)
                    455: LINK_KERNL=""
1.1       anton     456: 
                    457: #if test $host_os=dos
                    458: #then
                    459: #  echo Configuring for DOS!!!
                    460: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    461: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     462: #fi
                    463: 
                    464: dnl the following macro produces a warning with autoconf-2.1
                    465: AC_C_BIGENDIAN
1.23      pazsan    466: AC_SUBST(KERNEL)
1.1       anton     467: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    468: if test $ac_cv_c_bigendian = yes; then
                    469:   bytesex=b
1.23      pazsan    470:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     471: else
                    472:   bytesex=l
1.23      pazsan    473:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     474: fi
                    475: 
1.91      anton     476: #check how to do asm(".skip 16")
1.92      anton     477: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     478: if test -z "$skipcode"; then
                    479:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    480:     do
1.91      anton     481:        AC_TRY_RUN(
1.136     anton     482: [int foo(int,int,int);
1.91      anton     483: main()
                    484: {
1.136     anton     485:   exit(foo(0,0,0)!=16);
1.91      anton     486: }
1.136     anton     487: int foo(int x, int y, int z)
1.91      anton     488: {
1.136     anton     489:   static void *labels[]={&&label1, &&label2};
1.91      anton     490:   if (x) {
1.136     anton     491:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     492:   label1:
1.136     anton     493:     asm(".skip 16"); /* or ".space 16" or somesuch */
                    494:   label2: ;
                    495:   }
                    496:   {
                    497:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    498:   return labels[1]-labels[0];
1.91      anton     499:   }
1.136     anton     500: }]
1.92      anton     501:        ,skipcode=$i; break
                    502:        ,,)
1.136     anton     503:     done
                    504: fi
1.92      anton     505: AC_MSG_RESULT($skipcode)
                    506: if test "$skipcode" = no
                    507: then 
1.136     anton     508:     if test -z $no_dynamic_default; then
                    509:        no_dynamic_default=1
                    510:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    511:     fi
1.92      anton     512:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    513: else
                    514:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    515: fi
1.91      anton     516: 
1.136     anton     517: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     518: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     519: 
1.1       anton     520: dnl Checks for programs.
                    521: AC_PROG_LN_S
1.95      anton     522: AC_PROG_INSTALL
1.1       anton     523: 
                    524: dnl Checks for library functions
1.2       anton     525: dnl This check is just for making later checks link with libm.
                    526: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    527: AC_CHECK_LIB(m,asin)
1.31      anton     528: AC_CHECK_LIB(dl,dlopen)
1.124     pazsan    529: dnl check for ffcall libraries
                    530: dnl unfortunately, these four calls are separated out into a library each.
                    531: AC_CHECK_LIB(avcall,__builtin_avcall)
                    532: AC_CHECK_LIB(callback,__vacall_r)
                    533: AC_CHECK_LIB(vacall,vacall)
                    534: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.125     anton     535: FFCALLFLAG="false"
1.129     pazsan    536: OLDCALLFLAG="true"
                    537: 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])
                    538: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.125     anton     539: AC_SUBST(FFCALLFLAG)
1.129     pazsan    540: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    541: if test "$host_os" != "nextstep3"
                    542: then
                    543:        AC_FUNC_MEMCMP
                    544: fi
1.25      pazsan    545: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     546: AC_FUNC_FSEEKO
                    547: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     548: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     549: AC_DECL_SYS_SIGLIST
1.138     anton     550: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     551: AC_CHECK_FUNCS(expm1 log1p)
                    552: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     553: dnl No check for select, because our replacement is no good under
                    554: dnl anything but DOS
1.62      anton     555: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     556: AC_FUNC_FNMATCH
1.87      pazsan    557: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     558: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     559: AM_PATH_LISPDIR
1.1       anton     560: 
1.23      pazsan    561: kernel_fi=kernl${wordsize}${bytesex}.fi
                    562: AC_SUBST(kernel_fi)
1.50      jwilke    563: 
1.76      anton     564: #this breaks bindists
                    565: #dnl replace srource directory by absolute value
                    566: #if test $srcdir = "."; then srcdir=`pwd` 
                    567: #fi
1.8       anton     568: 
1.34      anton     569: AC_SUBST(machine)
1.95      anton     570: AC_CONFIG_FILES([
1.31      anton     571: Makefile
1.45      pazsan    572: Makedist
1.43      anton     573: gforthmi
1.80      anton     574: vmgen
1.79      pazsan    575: machpc.fs
1.35      anton     576: engine/Makefile
1.95      anton     577: doc/version.texi ])
                    578: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     579: chmod +x gforthmi
1.80      anton     580: chmod +x vmgen
1.95      anton     581: test -d kernel||mkdir kernel]],[[]])
                    582: AC_OUTPUT
1.44      anton     583: 

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