Annotation of gforth/configure.in, revision 1.148

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)
1.147     anton      50: 
                     51: AC_ARG_ENABLE(gcc-pr15242-workaround,
                     52:               AC_HELP_STRING([--disable-gcc-pr15242-workaround],[Disables
                     53:                              dynamic code generation on some versions of gcc
                     54:                              (slowdown~2 on Athlon) and causes slower building
                     55:                              of gforth (but gforth speedups) on others.
                     56:                              (default enabled)]),
                     57:                ,enable_gcc_pr15242_workaround=yes)
                     58: test "$enable_gcc_pr15242_workaround" = "no"||
                     59: AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
                     60: generation on gccs affected by PR15242])
                     61: 
1.135     anton      62: AC_ARG_ENABLE(prof,
                     63: [  --enable-prof          Build gforth-prof, which outputs frequently occuring
                     64:                           sequences of primitives.],
                     65: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o")
1.1       anton      66: 
1.9       pazsan     67: AC_ARG_WITH(debug,
1.122     pazsan     68: [  --with-debug                  specifies option -g to compile with debug info
                     69:   --without-debug        omits the -g switch and creates smaller images on
                     70:                          machines where "strip" has problems with gcc style
                     71:                          debugging informations.],
1.9       pazsan     72: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
1.122     pazsan     73: 
1.104     anton      74: dnl PEEPHOLE="yes"
                     75: dnl AC_ARG_WITH(peephole,
                     76: dnl [  --with-peephole Enable peephole optimization (default)
                     77: dnl   --without-peephole       disables peephole optimization. Creates smaller,
                     78: dnl                    but slower images.],
                     79: dnl PEEPHOLE="$withval")
                     80: 
                     81: #variables mentioned in INSTALL
1.123     anton      82: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton      83: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
                     84: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
                     85: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                     86: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                     87: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                     88: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                     89: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                     90: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                     91: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan     92: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton      93: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                     94: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.136     anton      95: AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
1.82      anton      96: 
1.96      anton      97: #set up feature test macros, so the tests get them right:
                     98: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton      99: AC_GNU_SOURCE
                    100: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                    101: 
                    102: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                    103: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                    104: dnl but not for _XOPEN_SOURCE)
                    105: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                    106: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                    107: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton     108: # turn on large file support with 64-bit off_t where available
1.105     anton     109: AC_SYS_LARGEFILE
                    110: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                    111: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     112: 
1.82      anton     113: #currently we force direct threading this way.  Eventually we should
                    114: #setup in the arch and engine files right
1.16      anton     115: 
1.15      pazsan    116: AC_PROG_CC
                    117: 
1.92      anton     118: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    119: 
1.15      pazsan    120: AC_SUBST(CC)
1.9       pazsan    121: AC_SUBST(DEBUGFLAG)
1.7       anton     122: 
1.128     pazsan    123: AC_MSG_CHECKING(make type)
                    124: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
                    125: 
                    126: GNUMAKE='#'
                    127: test "$make_type" = "GNU Make" && GNUMAKE=''
                    128: 
                    129: AC_MSG_RESULT($make_type)
                    130: 
                    131: AC_SUBST(GNUMAKE)
                    132: 
1.50      jwilke    133: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    134: OLDLDFLAGS=$LDFLAGS
                    135: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     136: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    137: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    138: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    139: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    140: AC_MSG_RESULT($ac_export_dynamic)
                    141: 
1.1       anton     142: #terminology is a bit unusual here: The host is the system on which
                    143: #gforth will run; the system on which configure will run is the `build'
                    144: AC_CANONICAL_HOST
                    145: case "$host_cpu" in
1.136     anton     146:        arm*)
                    147:                machine=arm
                    148:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    149:                if test -z $no_dynamic_default; then
                    150:                    no_dynamic_default=1
                    151:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    152:                fi
                    153:                ;;
1.1       anton     154:        hppa*)
1.34      anton     155:                machine=hppa
1.46      anton     156:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    157:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     158:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    159:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     160:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     161:                ;;
                    162:        sparc*)
1.34      anton     163:                machine=sparc
1.1       anton     164:                ;;
1.31      anton     165:        i386)
1.34      anton     166:                machine=386
1.16      anton     167:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     168:                ;;
                    169:        i486)
1.34      anton     170:                machine=386
1.31      anton     171:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    172:                ;;
1.77      anton     173:        i*86)
1.34      anton     174:                machine=386
1.55      anton     175:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    176:                CFLAGS_1="$CFLAGS"
1.87      pazsan    177:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    178:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     179:                ;;
1.133     anton     180:        x86_64)
                    181:                machine=amd64
                    182:                ;;
1.136     anton     183:        ia64*)
                    184:                machine=ia64
                    185:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    186:                test "$skipcode" || skipcode="nop.i 0"
                    187:                #".skip 16" passes the test below,
                    188:                # but gives an assembler error in engine
                    189:                ;;
1.26      pazsan    190:         m68k)
1.34      anton     191:                machine=m68k
1.32      pazsan    192:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    193:                if test "$host_os" = "nextstep3"
                    194:                then
1.87      pazsan    195:                        AC_LIBOBJ(termios)
1.32      pazsan    196:                fi
1.26      pazsan    197:                ;;
1.1       anton     198:        mips*)
1.34      anton     199:                machine=mips
1.92      anton     200:                #dynamic native code has the following problems on MIPS:
                    201:                #
                    202:                #1) J/JAL seems relocatable, but is are only
                    203:                #relocatable within a 256MB-segment.  While we try to
                    204:                #get the linker to arrange this, there is no guarantee
                    205:                #that this will succeed (and if the user uses a lot of
                    206:                #memory, it is likely to fail).
                    207:                #
                    208:                #2) The way we generate dynamic native code may
                    209:                #violate MIPS architectural restrictions (in
                    210:                #particular, the delay slots of LW, MFLO, etc.)
                    211:                #
                    212:                #Therefore we disable dynamic native code by default:
1.136     anton     213:                if test -z $no_dynamic_default; then
                    214:                    no_dynamic_default=1
                    215:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    216:                fi
1.1       anton     217:                ;;
1.9       pazsan    218:        alpha*)
1.34      anton     219:                machine=alpha
1.58      anton     220:                #full IEEE FP support for more uniformity across platforms:
                    221:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    222:                ;;
1.69      anton     223:        power*|rs6000)
1.34      anton     224:                machine=power
1.46      anton     225:                $srcdir/mkinstalldirs arch/power
1.138     anton     226:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     227:                #long long is broken on (at least) gcc-2.95.* for PPC
1.104     anton     228:                test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
1.31      anton     229:                ;;
1.1       anton     230:        *)
1.92      anton     231:                AC_MSG_WARN([Using a generic machine description])
                    232:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    233:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     234:                machine=generic
1.97      anton     235:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     236:                if test -z $no_dynamic_default; then
                    237:                    no_dynamic_default=1
                    238:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    239:                fi
1.1       anton     240: esac
1.10      anton     241: AC_SUBST(host)
1.146     pazsan    242: 
                    243: if test "${enable_force_ll+set}" = set; then
                    244:    ac_includes_default="$ac_includes_default
                    245: #include \"arch/generic/128bit.h\""
                    246: fi
1.103     anton     247: 
                    248: dnl the following macro produces a warning with autoconf-2.1
                    249: AC_CHECK_SIZEOF(char *)
                    250: case "$ac_cv_sizeof_char_p" in
                    251:   2)
                    252:     wordsize=16
                    253:     ;;
                    254:   4)
                    255:     wordsize=32
                    256:     ;;
                    257:   8)
                    258:     wordsize=64
                    259:     ;;
                    260: esac
                    261: 
                    262: AC_CHECK_SIZEOF(char)
                    263: AC_CHECK_SIZEOF(short)
                    264: AC_CHECK_SIZEOF(int)
                    265: AC_CHECK_SIZEOF(long)
                    266: AC_CHECK_SIZEOF(long long)
                    267: AC_CHECK_SIZEOF(intptr_t)
                    268: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    269: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     270: 
                    271: AC_MSG_CHECKING([for a C type for cells])
                    272: ac_cv_int_type_cell=none
                    273: case "$ac_cv_sizeof_char_p" in
                    274:   $ac_cv_sizeof_int)
                    275:     ac_cv_int_type_cell=int
                    276:     ;;
                    277:   $ac_cv_sizeof_short)
                    278:     ac_cv_int_type_cell=short
                    279:     ;;
                    280:   $ac_cv_sizeof_char)
                    281:     ac_cv_int_type_cell=char
                    282:     ;;
                    283:   $ac_cv_sizeof_long)
                    284:     ac_cv_int_type_cell=long
                    285:     ;;
                    286:   $ac_cv_sizeof_long_long)
                    287:     ac_cv_int_type_cell="long long"
                    288:     ;;
                    289:   $ac_cv_sizeof_intptr_t)
                    290:     ac_cv_int_type_cell="intptr_t"
                    291:     ;;
                    292:   $ac_cv_sizeof_int128_t)
                    293:     ac_cv_int_type_cell="int128_t"
                    294:     ;;
                    295: esac
                    296: AC_MSG_RESULT($ac_cv_int_type_cell)
                    297: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    298: 
                    299: AC_MSG_CHECKING([for a C type for double-cells])
                    300: ac_cv_int_type_double_cell=none
                    301: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    302:   $ac_cv_sizeof_short)
                    303:     ac_cv_int_type_double_cell=short
                    304:     ;;
                    305:   $ac_cv_sizeof_int)
                    306:     ac_cv_int_type_double_cell=int
                    307:     ;;
                    308:   $ac_cv_sizeof_long)
                    309:     ac_cv_int_type_double_cell=long
                    310:     ;;
                    311:   $ac_cv_sizeof_long_long)
                    312:     ac_cv_int_type_double_cell="long long"
                    313:     ;;
                    314:   $ac_cv_sizeof_intptr_t)
                    315:     ac_cv_int_type_double_cell="intptr_t"
                    316:     ;;
                    317:   $ac_cv_sizeof_int128_t)
                    318:     ac_cv_int_type_double_cell="int128_t"
                    319:     ;;
                    320: esac
                    321: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    322: 
                    323: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    324: ac_cv_int_type_double_ucell=none
                    325: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    326:   $ac_cv_sizeof_short)
                    327:     ac_cv_int_type_double_ucell="unsigned short"
                    328:     ;;
                    329:   $ac_cv_sizeof_int)
                    330:     ac_cv_int_type_double_ucell="unsigned int"
                    331:     ;;
                    332:   $ac_cv_sizeof_long)
                    333:     ac_cv_int_type_double_ucell="unsigned long"
                    334:     ;;
                    335:   $ac_cv_sizeof_long_long)
                    336:     ac_cv_int_type_double_ucell="unsigned long long"
                    337:     ;;
                    338:   $ac_cv_sizeof_intptr_t)
                    339:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    340:     ;;
                    341:   $ac_cv_sizeof_uint128_t)
                    342:     ac_cv_int_type_double_ucell="uint128_t"
                    343:     ;;
                    344: esac
                    345: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    346: 
                    347: if test "$ac_cv_int_type_double_cell" = none || \
                    348:    test "$ac_cv_int_type_double_ucell" = none
                    349: then
1.103     anton     350:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    351:        AC_LIBOBJ(dblsub)
                    352:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    353: else
                    354:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    355:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     356: fi
                    357: 
                    358: AC_TYPE_OFF_T
                    359: AC_CHECK_SIZEOF(off_t)
                    360: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    361: ac_small_off_t=$?
                    362: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     363: 
1.109     anton     364: ENGINE_FLAGS=
                    365: AC_SUBST(ENGINE_FLAGS)
                    366: 
                    367: # Try if GCC understands -fno-gcse
                    368: 
                    369: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    370: CFLAGS_1="$CFLAGS"
                    371: CFLAGS="$CFLAGS -fno-gcse"
                    372: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    373: CFLAGS="$CFLAGS_1"
                    374: AC_MSG_RESULT($ac_nogcse)
                    375: 
                    376: # Try if GCC understands -fno-strict-aliasing
                    377: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    378: CFLAGS_1="$CFLAGS"
                    379: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    380: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    381: CFLAGS="$CFLAGS_1"
                    382: AC_MSG_RESULT($ac_nostrictaliasing)
                    383: 
1.123     anton     384: # Try if GCC understands -fno-crossjumping
                    385: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    386: CFLAGS_1="$CFLAGS"
1.123     anton     387: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     388: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     389: CFLAGS="$CFLAGS_1"
1.124     pazsan    390: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    391: 
1.137     pazsan    392: # Try if GCC understands -fno-reorder-blocks
                    393: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    394: CFLAGS_1="$CFLAGS"
                    395: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    396: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    397: CFLAGS="$CFLAGS_1"
                    398: AC_MSG_RESULT($ac_noreorder_blocks)
                    399: 
1.130     anton     400: # Try if GCC understands __attribute__((unused))
                    401: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    402: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    403: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    404: AC_MSG_RESULT($MAYBE_UNUSED)
                    405: 
1.66      anton     406: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     407: AC_SUBST(asm_fs)
                    408: 
1.66      anton     409: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     410: AC_SUBST(disasm_fs)
                    411: 
1.116     anton     412: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     413: 
1.39      pazsan    414: case "$host_os" in
1.107     anton     415:        *win32|cygwin)
1.108     anton     416:                DIRSEP="\\\\"
1.127     anton     417:                PATHSEP=";"
1.142     anton     418:                #we want the builtins of command.com/cmd.exe and its
                    419:                # handling of .com files.
                    420:                #$COMSPEC contains the name of the Windows shell;
                    421:                # the ./ is there, because the bash does not recognize
                    422:                # absolute DOS filenames
                    423:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    424:                ;;
1.97      anton     425:        *darwin*)
                    426:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     427:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     428:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     429:                DIRSEP="/"
1.127     anton     430:                PATHSEP=":"
1.141     anton     431:                DEFAULTSYSTEMPREFIX=""
1.98      anton     432:                ;;
1.39      pazsan    433:        *)
1.88      pazsan    434:                DIRSEP="/"
1.127     anton     435:                PATHSEP=":"
1.141     anton     436:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    437:                ;;
                    438: esac
1.88      pazsan    439: AC_SUBST(DIRSEP)
1.89      pazsan    440: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     441: AC_SUBST(PATHSEP)
                    442: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     443: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    444: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    445: 
1.1       anton     446: dnl Now a little support for DOS/DJGCC
1.30      pazsan    447: AC_SUBST(GFORTH_EXE)
                    448: GFORTH_EXE=""
1.48      anton     449: AC_SUBST(GFORTHFAST_EXE)
                    450: GFORTHFAST_EXE=""
1.83      anton     451: AC_SUBST(GFORTHITC_EXE)
                    452: GFORTHITC_EXE=""
1.30      pazsan    453: AC_SUBST(GFORTHDITC_EXE)
                    454: GFORTHDITC_EXE=""
1.27      anton     455: 
                    456: AC_SUBST(FORTHSIZES)
1.24      anton     457: 
1.104     anton     458: dnl if test "$PEEPHOLE" = "yes"
                    459: dnl then
                    460: dnl    PEEPHOLEFLAG="true"
                    461: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    462: dnl else
                    463: dnl    PEEPHOLEFLAG="false"
                    464: dnl fi
                    465: PEEPHOLEFLAG="true"
1.79      pazsan    466: AC_SUBST(PEEPHOLEFLAG)
                    467: 
1.1       anton     468: dnl copy commands for systems that don't have links
1.29      pazsan    469: AC_SUBST(LINK_KERNL)
                    470: LINK_KERNL=""
1.1       anton     471: 
                    472: #if test $host_os=dos
                    473: #then
                    474: #  echo Configuring for DOS!!!
                    475: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    476: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     477: #fi
                    478: 
                    479: dnl the following macro produces a warning with autoconf-2.1
                    480: AC_C_BIGENDIAN
1.23      pazsan    481: AC_SUBST(KERNEL)
1.1       anton     482: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    483: if test $ac_cv_c_bigendian = yes; then
                    484:   bytesex=b
1.23      pazsan    485:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     486: else
                    487:   bytesex=l
1.23      pazsan    488:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     489: fi
                    490: 
1.91      anton     491: #check how to do asm(".skip 16")
1.148   ! anton     492: echo "CFLAGS=$CFLAGS"
        !           493: echo "ac_link=$ac_link"
1.92      anton     494: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     495: if test -z "$skipcode"; then
1.148   ! anton     496:     skipcode=no
        !           497:     CFLAGS_1="$CFLAGS"
        !           498:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     499:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    500:     do
1.91      anton     501:        AC_TRY_RUN(
1.136     anton     502: [int foo(int,int,int);
1.91      anton     503: main()
                    504: {
1.136     anton     505:   exit(foo(0,0,0)!=16);
1.91      anton     506: }
1.136     anton     507: int foo(int x, int y, int z)
1.91      anton     508: {
1.136     anton     509:   static void *labels[]={&&label1, &&label2};
1.91      anton     510:   if (x) {
1.136     anton     511:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     512:   label1:
1.148   ! anton     513:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     514:   label2: ;
                    515:   }
                    516:   {
                    517:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    518:   return labels[1]-labels[0];
1.91      anton     519:   }
1.136     anton     520: }]
1.92      anton     521:        ,skipcode=$i; break
                    522:        ,,)
1.136     anton     523:     done
1.148   ! anton     524:     CFLAGS=$CFLAGS_1
1.136     anton     525: fi
1.92      anton     526: AC_MSG_RESULT($skipcode)
                    527: if test "$skipcode" = no
                    528: then 
1.136     anton     529:     if test -z $no_dynamic_default; then
                    530:        no_dynamic_default=1
                    531:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    532:     fi
1.92      anton     533:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    534: else
                    535:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    536: fi
1.91      anton     537: 
1.136     anton     538: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     539: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     540: 
1.1       anton     541: dnl Checks for programs.
                    542: AC_PROG_LN_S
1.95      anton     543: AC_PROG_INSTALL
1.1       anton     544: 
                    545: dnl Checks for library functions
1.2       anton     546: dnl This check is just for making later checks link with libm.
                    547: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    548: AC_CHECK_LIB(m,asin)
1.31      anton     549: AC_CHECK_LIB(dl,dlopen)
1.124     pazsan    550: dnl check for ffcall libraries
                    551: dnl unfortunately, these four calls are separated out into a library each.
                    552: AC_CHECK_LIB(avcall,__builtin_avcall)
                    553: AC_CHECK_LIB(callback,__vacall_r)
                    554: AC_CHECK_LIB(vacall,vacall)
                    555: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.125     anton     556: FFCALLFLAG="false"
1.129     pazsan    557: OLDCALLFLAG="true"
                    558: 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])
                    559: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.125     anton     560: AC_SUBST(FFCALLFLAG)
1.129     pazsan    561: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    562: if test "$host_os" != "nextstep3"
                    563: then
                    564:        AC_FUNC_MEMCMP
                    565: fi
1.25      pazsan    566: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     567: AC_FUNC_FSEEKO
                    568: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     569: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     570: AC_DECL_SYS_SIGLIST
1.138     anton     571: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     572: AC_CHECK_FUNCS(expm1 log1p)
                    573: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     574: dnl No check for select, because our replacement is no good under
                    575: dnl anything but DOS
1.62      anton     576: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     577: AC_FUNC_FNMATCH
1.87      pazsan    578: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     579: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     580: AM_PATH_LISPDIR
1.1       anton     581: 
1.23      pazsan    582: kernel_fi=kernl${wordsize}${bytesex}.fi
                    583: AC_SUBST(kernel_fi)
1.50      jwilke    584: 
1.76      anton     585: #this breaks bindists
                    586: #dnl replace srource directory by absolute value
                    587: #if test $srcdir = "."; then srcdir=`pwd` 
                    588: #fi
1.8       anton     589: 
1.34      anton     590: AC_SUBST(machine)
1.95      anton     591: AC_CONFIG_FILES([
1.31      anton     592: Makefile
1.45      pazsan    593: Makedist
1.43      anton     594: gforthmi
1.80      anton     595: vmgen
1.79      pazsan    596: machpc.fs
1.35      anton     597: engine/Makefile
1.95      anton     598: doc/version.texi ])
                    599: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     600: chmod +x gforthmi
1.80      anton     601: chmod +x vmgen
1.95      anton     602: test -d kernel||mkdir kernel]],[[]])
                    603: AC_OUTPUT
1.44      anton     604: 

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