Annotation of gforth/configure.in, revision 1.149

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 "$CFLAGS" || CFLAGS=-O2
                     35: 
1.1       anton      36: AC_ARG_ENABLE(force-reg,
1.149   ! anton      37:        AC_HELP_STRING([--enable-force-reg],
        !            38:                        [ Use explicit register declarations if they appear in
1.1       anton      39:                          the machine.h file. This can cause a good speedup,
                     40:                          but also incorrect code with some gcc versions on
1.149   ! anton      41:                          some processors (default disabled).]),
        !            42:        ,enable_force_reg=no)
        !            43: test "$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: 
1.149   ! anton      67: AC_SUBST(PROFEXES)
        !            68: AC_SUBST(PROFOBJS)
1.135     anton      69: AC_ARG_ENABLE(prof,
1.149   ! anton      70:        AC_HELP_STRING([--enable-prof],
        !            71:                        [ Build gforth-prof, which outputs frequently occuring
        !            72:                           sequences of primitives.]),
        !            73:        ,enable_prof=no)
        !            74: if test "$enable_prof" = "no"; then
        !            75:   PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
        !            76: fi
1.1       anton      77: 
1.9       pazsan     78: AC_ARG_WITH(debug,
1.122     pazsan     79: [  --with-debug                  specifies option -g to compile with debug info
                     80:   --without-debug        omits the -g switch and creates smaller images on
                     81:                          machines where "strip" has problems with gcc style
                     82:                          debugging informations.],
1.9       pazsan     83: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
1.122     pazsan     84: 
1.104     anton      85: dnl PEEPHOLE="yes"
                     86: dnl AC_ARG_WITH(peephole,
                     87: dnl [  --with-peephole Enable peephole optimization (default)
                     88: dnl   --without-peephole       disables peephole optimization. Creates smaller,
                     89: dnl                    but slower images.],
                     90: dnl PEEPHOLE="$withval")
                     91: 
                     92: #variables mentioned in INSTALL
1.123     anton      93: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton      94: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
                     95: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
                     96: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                     97: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                     98: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                     99: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                    100: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                    101: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                    102: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan    103: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton     104: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                    105: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.136     anton     106: AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
1.82      anton     107: 
1.96      anton     108: #set up feature test macros, so the tests get them right:
                    109: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton     110: AC_GNU_SOURCE
                    111: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                    112: 
                    113: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                    114: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                    115: dnl but not for _XOPEN_SOURCE)
                    116: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                    117: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                    118: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton     119: # turn on large file support with 64-bit off_t where available
1.105     anton     120: AC_SYS_LARGEFILE
                    121: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                    122: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     123: 
1.82      anton     124: #currently we force direct threading this way.  Eventually we should
                    125: #setup in the arch and engine files right
1.16      anton     126: 
1.15      pazsan    127: AC_PROG_CC
                    128: 
1.92      anton     129: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    130: 
1.15      pazsan    131: AC_SUBST(CC)
1.9       pazsan    132: AC_SUBST(DEBUGFLAG)
1.7       anton     133: 
1.128     pazsan    134: AC_MSG_CHECKING(make type)
                    135: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
                    136: 
                    137: GNUMAKE='#'
                    138: test "$make_type" = "GNU Make" && GNUMAKE=''
                    139: 
                    140: AC_MSG_RESULT($make_type)
                    141: 
                    142: AC_SUBST(GNUMAKE)
                    143: 
1.50      jwilke    144: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    145: OLDLDFLAGS=$LDFLAGS
                    146: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     147: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    148: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    149: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    150: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    151: AC_MSG_RESULT($ac_export_dynamic)
                    152: 
1.1       anton     153: #terminology is a bit unusual here: The host is the system on which
                    154: #gforth will run; the system on which configure will run is the `build'
                    155: AC_CANONICAL_HOST
                    156: case "$host_cpu" in
1.136     anton     157:        arm*)
                    158:                machine=arm
                    159:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    160:                if test -z $no_dynamic_default; then
                    161:                    no_dynamic_default=1
                    162:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    163:                fi
                    164:                ;;
1.1       anton     165:        hppa*)
1.34      anton     166:                machine=hppa
1.46      anton     167:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    168:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     169:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    170:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     171:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     172:                ;;
                    173:        sparc*)
1.34      anton     174:                machine=sparc
1.1       anton     175:                ;;
1.31      anton     176:        i386)
1.34      anton     177:                machine=386
1.16      anton     178:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     179:                ;;
                    180:        i486)
1.34      anton     181:                machine=386
1.31      anton     182:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    183:                ;;
1.77      anton     184:        i*86)
1.34      anton     185:                machine=386
1.55      anton     186:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    187:                CFLAGS_1="$CFLAGS"
1.87      pazsan    188:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    189:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     190:                ;;
1.133     anton     191:        x86_64)
                    192:                machine=amd64
                    193:                ;;
1.136     anton     194:        ia64*)
                    195:                machine=ia64
                    196:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    197:                test "$skipcode" || skipcode="nop.i 0"
                    198:                #".skip 16" passes the test below,
                    199:                # but gives an assembler error in engine
                    200:                ;;
1.26      pazsan    201:         m68k)
1.34      anton     202:                machine=m68k
1.32      pazsan    203:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    204:                if test "$host_os" = "nextstep3"
                    205:                then
1.87      pazsan    206:                        AC_LIBOBJ(termios)
1.32      pazsan    207:                fi
1.26      pazsan    208:                ;;
1.1       anton     209:        mips*)
1.34      anton     210:                machine=mips
1.92      anton     211:                #dynamic native code has the following problems on MIPS:
                    212:                #
                    213:                #1) J/JAL seems relocatable, but is are only
                    214:                #relocatable within a 256MB-segment.  While we try to
                    215:                #get the linker to arrange this, there is no guarantee
                    216:                #that this will succeed (and if the user uses a lot of
                    217:                #memory, it is likely to fail).
                    218:                #
                    219:                #2) The way we generate dynamic native code may
                    220:                #violate MIPS architectural restrictions (in
                    221:                #particular, the delay slots of LW, MFLO, etc.)
                    222:                #
                    223:                #Therefore we disable dynamic native code by default:
1.136     anton     224:                if test -z $no_dynamic_default; then
                    225:                    no_dynamic_default=1
                    226:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    227:                fi
1.1       anton     228:                ;;
1.9       pazsan    229:        alpha*)
1.34      anton     230:                machine=alpha
1.58      anton     231:                #full IEEE FP support for more uniformity across platforms:
                    232:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    233:                ;;
1.69      anton     234:        power*|rs6000)
1.34      anton     235:                machine=power
1.46      anton     236:                $srcdir/mkinstalldirs arch/power
1.138     anton     237:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     238:                #long long is broken on (at least) gcc-2.95.* for PPC
1.104     anton     239:                test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
1.31      anton     240:                ;;
1.1       anton     241:        *)
1.92      anton     242:                AC_MSG_WARN([Using a generic machine description])
                    243:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    244:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     245:                machine=generic
1.97      anton     246:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     247:                if test -z $no_dynamic_default; then
                    248:                    no_dynamic_default=1
                    249:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    250:                fi
1.1       anton     251: esac
1.10      anton     252: AC_SUBST(host)
1.146     pazsan    253: 
                    254: if test "${enable_force_ll+set}" = set; then
                    255:    ac_includes_default="$ac_includes_default
                    256: #include \"arch/generic/128bit.h\""
                    257: fi
1.103     anton     258: 
                    259: dnl the following macro produces a warning with autoconf-2.1
                    260: AC_CHECK_SIZEOF(char *)
                    261: case "$ac_cv_sizeof_char_p" in
                    262:   2)
                    263:     wordsize=16
                    264:     ;;
                    265:   4)
                    266:     wordsize=32
                    267:     ;;
                    268:   8)
                    269:     wordsize=64
                    270:     ;;
                    271: esac
                    272: 
                    273: AC_CHECK_SIZEOF(char)
                    274: AC_CHECK_SIZEOF(short)
                    275: AC_CHECK_SIZEOF(int)
                    276: AC_CHECK_SIZEOF(long)
                    277: AC_CHECK_SIZEOF(long long)
                    278: AC_CHECK_SIZEOF(intptr_t)
                    279: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    280: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     281: 
                    282: AC_MSG_CHECKING([for a C type for cells])
                    283: ac_cv_int_type_cell=none
                    284: case "$ac_cv_sizeof_char_p" in
                    285:   $ac_cv_sizeof_int)
                    286:     ac_cv_int_type_cell=int
                    287:     ;;
                    288:   $ac_cv_sizeof_short)
                    289:     ac_cv_int_type_cell=short
                    290:     ;;
                    291:   $ac_cv_sizeof_char)
                    292:     ac_cv_int_type_cell=char
                    293:     ;;
                    294:   $ac_cv_sizeof_long)
                    295:     ac_cv_int_type_cell=long
                    296:     ;;
                    297:   $ac_cv_sizeof_long_long)
                    298:     ac_cv_int_type_cell="long long"
                    299:     ;;
                    300:   $ac_cv_sizeof_intptr_t)
                    301:     ac_cv_int_type_cell="intptr_t"
                    302:     ;;
                    303:   $ac_cv_sizeof_int128_t)
                    304:     ac_cv_int_type_cell="int128_t"
                    305:     ;;
                    306: esac
                    307: AC_MSG_RESULT($ac_cv_int_type_cell)
                    308: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    309: 
                    310: AC_MSG_CHECKING([for a C type for double-cells])
                    311: ac_cv_int_type_double_cell=none
                    312: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    313:   $ac_cv_sizeof_short)
                    314:     ac_cv_int_type_double_cell=short
                    315:     ;;
                    316:   $ac_cv_sizeof_int)
                    317:     ac_cv_int_type_double_cell=int
                    318:     ;;
                    319:   $ac_cv_sizeof_long)
                    320:     ac_cv_int_type_double_cell=long
                    321:     ;;
                    322:   $ac_cv_sizeof_long_long)
                    323:     ac_cv_int_type_double_cell="long long"
                    324:     ;;
                    325:   $ac_cv_sizeof_intptr_t)
                    326:     ac_cv_int_type_double_cell="intptr_t"
                    327:     ;;
                    328:   $ac_cv_sizeof_int128_t)
                    329:     ac_cv_int_type_double_cell="int128_t"
                    330:     ;;
                    331: esac
                    332: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    333: 
                    334: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    335: ac_cv_int_type_double_ucell=none
                    336: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    337:   $ac_cv_sizeof_short)
                    338:     ac_cv_int_type_double_ucell="unsigned short"
                    339:     ;;
                    340:   $ac_cv_sizeof_int)
                    341:     ac_cv_int_type_double_ucell="unsigned int"
                    342:     ;;
                    343:   $ac_cv_sizeof_long)
                    344:     ac_cv_int_type_double_ucell="unsigned long"
                    345:     ;;
                    346:   $ac_cv_sizeof_long_long)
                    347:     ac_cv_int_type_double_ucell="unsigned long long"
                    348:     ;;
                    349:   $ac_cv_sizeof_intptr_t)
                    350:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    351:     ;;
                    352:   $ac_cv_sizeof_uint128_t)
                    353:     ac_cv_int_type_double_ucell="uint128_t"
                    354:     ;;
                    355: esac
                    356: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    357: 
                    358: if test "$ac_cv_int_type_double_cell" = none || \
                    359:    test "$ac_cv_int_type_double_ucell" = none
                    360: then
1.103     anton     361:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    362:        AC_LIBOBJ(dblsub)
                    363:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    364: else
                    365:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    366:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     367: fi
                    368: 
                    369: AC_TYPE_OFF_T
                    370: AC_CHECK_SIZEOF(off_t)
                    371: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    372: ac_small_off_t=$?
                    373: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     374: 
1.109     anton     375: ENGINE_FLAGS=
                    376: AC_SUBST(ENGINE_FLAGS)
                    377: 
                    378: # Try if GCC understands -fno-gcse
                    379: 
                    380: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    381: CFLAGS_1="$CFLAGS"
                    382: CFLAGS="$CFLAGS -fno-gcse"
                    383: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    384: CFLAGS="$CFLAGS_1"
                    385: AC_MSG_RESULT($ac_nogcse)
                    386: 
                    387: # Try if GCC understands -fno-strict-aliasing
                    388: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    389: CFLAGS_1="$CFLAGS"
                    390: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    391: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    392: CFLAGS="$CFLAGS_1"
                    393: AC_MSG_RESULT($ac_nostrictaliasing)
                    394: 
1.123     anton     395: # Try if GCC understands -fno-crossjumping
                    396: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    397: CFLAGS_1="$CFLAGS"
1.123     anton     398: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     399: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     400: CFLAGS="$CFLAGS_1"
1.124     pazsan    401: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    402: 
1.137     pazsan    403: # Try if GCC understands -fno-reorder-blocks
                    404: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    405: CFLAGS_1="$CFLAGS"
                    406: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    407: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    408: CFLAGS="$CFLAGS_1"
                    409: AC_MSG_RESULT($ac_noreorder_blocks)
                    410: 
1.130     anton     411: # Try if GCC understands __attribute__((unused))
                    412: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    413: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    414: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    415: AC_MSG_RESULT($MAYBE_UNUSED)
                    416: 
1.66      anton     417: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     418: AC_SUBST(asm_fs)
                    419: 
1.66      anton     420: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     421: AC_SUBST(disasm_fs)
                    422: 
1.116     anton     423: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     424: 
1.39      pazsan    425: case "$host_os" in
1.107     anton     426:        *win32|cygwin)
1.108     anton     427:                DIRSEP="\\\\"
1.127     anton     428:                PATHSEP=";"
1.142     anton     429:                #we want the builtins of command.com/cmd.exe and its
                    430:                # handling of .com files.
                    431:                #$COMSPEC contains the name of the Windows shell;
                    432:                # the ./ is there, because the bash does not recognize
                    433:                # absolute DOS filenames
                    434:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    435:                ;;
1.97      anton     436:        *darwin*)
                    437:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     438:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     439:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     440:                DIRSEP="/"
1.127     anton     441:                PATHSEP=":"
1.141     anton     442:                DEFAULTSYSTEMPREFIX=""
1.98      anton     443:                ;;
1.39      pazsan    444:        *)
1.88      pazsan    445:                DIRSEP="/"
1.127     anton     446:                PATHSEP=":"
1.141     anton     447:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    448:                ;;
                    449: esac
1.88      pazsan    450: AC_SUBST(DIRSEP)
1.89      pazsan    451: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     452: AC_SUBST(PATHSEP)
                    453: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     454: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    455: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    456: 
1.1       anton     457: dnl Now a little support for DOS/DJGCC
1.30      pazsan    458: AC_SUBST(GFORTH_EXE)
                    459: GFORTH_EXE=""
1.48      anton     460: AC_SUBST(GFORTHFAST_EXE)
                    461: GFORTHFAST_EXE=""
1.83      anton     462: AC_SUBST(GFORTHITC_EXE)
                    463: GFORTHITC_EXE=""
1.30      pazsan    464: AC_SUBST(GFORTHDITC_EXE)
                    465: GFORTHDITC_EXE=""
1.27      anton     466: 
                    467: AC_SUBST(FORTHSIZES)
1.24      anton     468: 
1.104     anton     469: dnl if test "$PEEPHOLE" = "yes"
                    470: dnl then
                    471: dnl    PEEPHOLEFLAG="true"
                    472: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    473: dnl else
                    474: dnl    PEEPHOLEFLAG="false"
                    475: dnl fi
                    476: PEEPHOLEFLAG="true"
1.79      pazsan    477: AC_SUBST(PEEPHOLEFLAG)
                    478: 
1.1       anton     479: dnl copy commands for systems that don't have links
1.29      pazsan    480: AC_SUBST(LINK_KERNL)
                    481: LINK_KERNL=""
1.1       anton     482: 
                    483: #if test $host_os=dos
                    484: #then
                    485: #  echo Configuring for DOS!!!
                    486: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    487: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     488: #fi
                    489: 
                    490: dnl the following macro produces a warning with autoconf-2.1
                    491: AC_C_BIGENDIAN
1.23      pazsan    492: AC_SUBST(KERNEL)
1.1       anton     493: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    494: if test $ac_cv_c_bigendian = yes; then
                    495:   bytesex=b
1.23      pazsan    496:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     497: else
                    498:   bytesex=l
1.23      pazsan    499:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     500: fi
                    501: 
1.91      anton     502: #check how to do asm(".skip 16")
1.148     anton     503: echo "CFLAGS=$CFLAGS"
                    504: echo "ac_link=$ac_link"
1.92      anton     505: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     506: if test -z "$skipcode"; then
1.148     anton     507:     skipcode=no
                    508:     CFLAGS_1="$CFLAGS"
                    509:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     510:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    511:     do
1.91      anton     512:        AC_TRY_RUN(
1.136     anton     513: [int foo(int,int,int);
1.91      anton     514: main()
                    515: {
1.136     anton     516:   exit(foo(0,0,0)!=16);
1.91      anton     517: }
1.136     anton     518: int foo(int x, int y, int z)
1.91      anton     519: {
1.136     anton     520:   static void *labels[]={&&label1, &&label2};
1.91      anton     521:   if (x) {
1.136     anton     522:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     523:   label1:
1.148     anton     524:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     525:   label2: ;
                    526:   }
                    527:   {
                    528:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    529:   return labels[1]-labels[0];
1.91      anton     530:   }
1.136     anton     531: }]
1.92      anton     532:        ,skipcode=$i; break
                    533:        ,,)
1.136     anton     534:     done
1.148     anton     535:     CFLAGS=$CFLAGS_1
1.136     anton     536: fi
1.92      anton     537: AC_MSG_RESULT($skipcode)
                    538: if test "$skipcode" = no
                    539: then 
1.136     anton     540:     if test -z $no_dynamic_default; then
                    541:        no_dynamic_default=1
                    542:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    543:     fi
1.92      anton     544:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    545: else
                    546:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    547: fi
1.91      anton     548: 
1.136     anton     549: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     550: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     551: 
1.1       anton     552: dnl Checks for programs.
                    553: AC_PROG_LN_S
1.95      anton     554: AC_PROG_INSTALL
1.1       anton     555: 
                    556: dnl Checks for library functions
1.2       anton     557: dnl This check is just for making later checks link with libm.
                    558: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    559: AC_CHECK_LIB(m,asin)
1.31      anton     560: AC_CHECK_LIB(dl,dlopen)
1.124     pazsan    561: dnl check for ffcall libraries
                    562: dnl unfortunately, these four calls are separated out into a library each.
                    563: AC_CHECK_LIB(avcall,__builtin_avcall)
                    564: AC_CHECK_LIB(callback,__vacall_r)
                    565: AC_CHECK_LIB(vacall,vacall)
                    566: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.125     anton     567: FFCALLFLAG="false"
1.129     pazsan    568: OLDCALLFLAG="true"
                    569: 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])
                    570: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.125     anton     571: AC_SUBST(FFCALLFLAG)
1.129     pazsan    572: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    573: if test "$host_os" != "nextstep3"
                    574: then
                    575:        AC_FUNC_MEMCMP
                    576: fi
1.25      pazsan    577: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     578: AC_FUNC_FSEEKO
                    579: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     580: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     581: AC_DECL_SYS_SIGLIST
1.138     anton     582: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     583: AC_CHECK_FUNCS(expm1 log1p)
                    584: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     585: dnl No check for select, because our replacement is no good under
                    586: dnl anything but DOS
1.62      anton     587: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     588: AC_FUNC_FNMATCH
1.87      pazsan    589: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     590: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     591: AM_PATH_LISPDIR
1.1       anton     592: 
1.23      pazsan    593: kernel_fi=kernl${wordsize}${bytesex}.fi
                    594: AC_SUBST(kernel_fi)
1.50      jwilke    595: 
1.76      anton     596: #this breaks bindists
                    597: #dnl replace srource directory by absolute value
                    598: #if test $srcdir = "."; then srcdir=`pwd` 
                    599: #fi
1.8       anton     600: 
1.34      anton     601: AC_SUBST(machine)
1.95      anton     602: AC_CONFIG_FILES([
1.31      anton     603: Makefile
1.45      pazsan    604: Makedist
1.43      anton     605: gforthmi
1.80      anton     606: vmgen
1.79      pazsan    607: machpc.fs
1.35      anton     608: engine/Makefile
1.95      anton     609: doc/version.texi ])
                    610: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     611: chmod +x gforthmi
1.80      anton     612: chmod +x vmgen
1.95      anton     613: test -d kernel||mkdir kernel]],[[]])
                    614: AC_OUTPUT
1.44      anton     615: 

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