Annotation of gforth/configure.in, revision 1.175

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
1.160     pazsan      3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006 Free Software Foundation, Inc.
1.20      anton       4: 
                      5: #This file is part of Gforth.
                      6: 
                      7: #Gforth is free software; you can redistribute it and/or
                      8: #modify it under the terms of the GNU General Public License
                      9: #as published by the Free Software Foundation; either version 2
                     10: #of the License, or (at your option) any later version.
                     11: 
                     12: #This program is distributed in the hope that it will be useful,
                     13: #but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
                     15: #GNU General Public License for more details.
                     16: 
                     17: #You should have received a copy of the GNU General Public License
                     18: #along with this program; if not, write to the Free Software
1.74      anton      19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.20      anton      20: 
1.121     anton      21: 
1.34      anton      22: dnl We use some automake macros here,
                     23: dnl but don't use automake for creating Makefile.in
1.164     pazsan     24: AC_INIT([gforth],[0.6.2-20060527],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
1.113     anton      25: AC_PREREQ(2.54)
1.47      anton      26: #snapshots have numbers major.minor.release-YYYYMMDD
1.92      anton      27: #note that lexicographic ordering must be heeded.
1.47      anton      28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
1.160     pazsan     29: UPDATED="April 09, 2006"
1.84      anton      30: AC_SUBST(UPDATED)
1.94      anton      31: AC_CONFIG_HEADERS(engine/config.h)
1.14      anton      32: 
1.121     anton      33: #suppress the "-g -O2" default
                     34: test "$CFLAGS" || CFLAGS=-O2
                     35: 
1.1       anton      36: AC_ARG_ENABLE(force-reg,
1.149     anton      37:        AC_HELP_STRING([--enable-force-reg],
                     38:                        [ Use explicit register declarations if they appear in
1.1       anton      39:                          the machine.h file. This can cause a good speedup,
                     40:                          but also incorrect code with some gcc versions on
1.149     anton      41:                          some processors (default disabled).]),
                     42:        ,enable_force_reg=no)
                     43: test "$enable_force_reg" = "no"||
                     44:   AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)])
                     45: 
1.145     pazsan     46: AC_ARG_ENABLE(force-ll,
1.149     anton      47:        AC_HELP_STRING([--enable-force-ll],
                     48:                       [  Use explicit long long declarations if they appear in
1.145     pazsan     49:                          the machine.h file. This can cause a good speedup,
                     50:                          but also incorrect code with some gcc versions on
1.149     anton      51:                          some processors (default disabled).]),
                     52:        ,enable_force_ll=no)
                     53: test "$enable_force_ll" = "no"||
                     54:   AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
1.147     anton      55: 
1.150     pazsan     56: AC_ARG_ENABLE(force-cdiv,
                     57:        AC_HELP_STRING([--enable-force-cdiv],
                     58:                       [  Use the native C division - symmetric - instead of
                     59:                          floored division (default disabled).]),
                     60:        ,enable_force_cdiv=no)
                     61: test "$enable_force_cdiv" = "no"||
                     62:   AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
                     63: 
1.149     anton      64: AC_SUBST(PROFEXES)
                     65: AC_SUBST(PROFOBJS)
1.135     anton      66: AC_ARG_ENABLE(prof,
1.149     anton      67:        AC_HELP_STRING([--enable-prof],
                     68:                        [ Build gforth-prof, which outputs frequently occuring
                     69:                           sequences of primitives.]),
                     70:        ,enable_prof=no)
                     71: if test "$enable_prof" = "no"; then
                     72:   PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
                     73: fi
1.1       anton      74: 
1.9       pazsan     75: AC_ARG_WITH(debug,
1.122     pazsan     76: [  --with-debug                  specifies option -g to compile with debug info
                     77:   --without-debug        omits the -g switch and creates smaller images on
                     78:                          machines where "strip" has problems with gcc style
                     79:                          debugging informations.],
1.9       pazsan     80: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
1.122     pazsan     81: 
1.104     anton      82: dnl PEEPHOLE="yes"
                     83: dnl AC_ARG_WITH(peephole,
                     84: dnl [  --with-peephole Enable peephole optimization (default)
                     85: dnl   --without-peephole       disables peephole optimization. Creates smaller,
                     86: dnl                    but slower images.],
                     87: dnl PEEPHOLE="$withval")
                     88: 
1.167     pazsan     89: AC_ARG_ENABLE(ec,
                     90:        AC_HELP_STRING([--enable-ec],
1.168     pazsan     91:                        [  Build gforth for systems without OS.]),
1.167     pazsan     92:        ,enable_ec=no)
                     93: if test "$enable_ec" = "yes"; then
1.168     pazsan     94:   echo "defining standalone system"
                     95:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
1.167     pazsan     96:   EC_MODE="true"
                     97: else
1.168     pazsan     98:   echo "defining hosted system"
1.167     pazsan     99:   EC_MODE="false"
                    100: fi
                    101: 
1.104     anton     102: #variables mentioned in INSTALL
1.123     anton     103: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton     104: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
1.151     anton     105: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
1.173     anton     106: AC_ARG_VAR(GCC_PR15242_WORKAROUND, [Force the enabling (1) or disabling (0) of a workaround for a gcc-3.x performance bug (default unset: use workaround for gcc-3.x)])
                    107: 
1.104     anton     108: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
                    109: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                    110: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                    111: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                    112: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                    113: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                    114: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                    115: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan    116: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton     117: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                    118: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.166     anton     119: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
1.174     anton     120: AC_ARG_VAR(asmcomment, [assembler comment start string])
1.175   ! anton     121: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
1.82      anton     122: 
1.96      anton     123: #set up feature test macros, so the tests get them right:
                    124: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton     125: AC_GNU_SOURCE
                    126: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                    127: 
                    128: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                    129: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                    130: dnl but not for _XOPEN_SOURCE)
                    131: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                    132: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                    133: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton     134: # turn on large file support with 64-bit off_t where available
1.105     anton     135: AC_SYS_LARGEFILE
                    136: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                    137: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     138: 
1.82      anton     139: #currently we force direct threading this way.  Eventually we should
                    140: #setup in the arch and engine files right
1.16      anton     141: 
1.15      pazsan    142: AC_PROG_CC
                    143: 
1.92      anton     144: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    145: 
1.15      pazsan    146: AC_SUBST(CC)
1.9       pazsan    147: AC_SUBST(DEBUGFLAG)
1.167     pazsan    148: AC_SUBST(EC_MODE)
1.7       anton     149: 
1.174     anton     150: #this is used to disable some (not generally essential) part of the
                    151: #Makefile that some makes don't grok.  It would be better to test for
                    152: #this specific Makefile feature than the make version.
1.128     pazsan    153: AC_MSG_CHECKING(make type)
1.174     anton     154: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
1.128     pazsan    155: GNUMAKE='#'
                    156: test "$make_type" = "GNU Make" && GNUMAKE=''
                    157: AC_MSG_RESULT($make_type)
                    158: AC_SUBST(GNUMAKE)
                    159: 
1.50      jwilke    160: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    161: OLDLDFLAGS=$LDFLAGS
                    162: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     163: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    164: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    165: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    166: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    167: AC_MSG_RESULT($ac_export_dynamic)
                    168: 
1.1       anton     169: #terminology is a bit unusual here: The host is the system on which
                    170: #gforth will run; the system on which configure will run is the `build'
                    171: AC_CANONICAL_HOST
                    172: case "$host_cpu" in
1.136     anton     173:        arm*)
                    174:                machine=arm
                    175:                CFLAGS="$CFLAGS -fomit-frame-pointer"
1.175   ! anton     176:                if test -z $arm_cacheflush; then
1.136     anton     177:                    no_dynamic_default=1
1.175   ! anton     178:                     arm_cacheflush=arch/arm/cacheflush0
1.136     anton     179:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    180:                fi
1.175   ! anton     181:                 AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
        !           182:                 AC_LIBOBJ(../$arm_cacheflush)
1.136     anton     183:                ;;
1.1       anton     184:        hppa*)
1.34      anton     185:                machine=hppa
1.46      anton     186:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    187:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     188:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    189:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     190:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     191:                ;;
                    192:        sparc*)
1.34      anton     193:                machine=sparc
1.1       anton     194:                ;;
1.31      anton     195:        i386)
1.34      anton     196:                machine=386
1.16      anton     197:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     198:                ;;
                    199:        i486)
1.34      anton     200:                machine=386
1.31      anton     201:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    202:                ;;
1.77      anton     203:        i*86)
1.34      anton     204:                machine=386
1.55      anton     205:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    206:                CFLAGS_1="$CFLAGS"
1.87      pazsan    207:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    208:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     209:                ;;
1.133     anton     210:        x86_64)
                    211:                machine=amd64
                    212:                ;;
1.136     anton     213:        ia64*)
                    214:                machine=ia64
                    215:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    216:                test "$skipcode" || skipcode="nop.i 0"
                    217:                #".skip 16" passes the test below,
                    218:                # but gives an assembler error in engine
                    219:                ;;
1.26      pazsan    220:         m68k)
1.34      anton     221:                machine=m68k
1.32      pazsan    222:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    223:                if test "$host_os" = "nextstep3"
                    224:                then
1.87      pazsan    225:                        AC_LIBOBJ(termios)
1.32      pazsan    226:                fi
1.26      pazsan    227:                ;;
1.1       anton     228:        mips*)
1.34      anton     229:                machine=mips
1.92      anton     230:                #dynamic native code has the following problems on MIPS:
                    231:                #
                    232:                #1) J/JAL seems relocatable, but is are only
                    233:                #relocatable within a 256MB-segment.  While we try to
                    234:                #get the linker to arrange this, there is no guarantee
                    235:                #that this will succeed (and if the user uses a lot of
                    236:                #memory, it is likely to fail).
                    237:                #
                    238:                #2) The way we generate dynamic native code may
                    239:                #violate MIPS architectural restrictions (in
                    240:                #particular, the delay slots of LW, MFLO, etc.)
                    241:                #
                    242:                #Therefore we disable dynamic native code by default:
1.136     anton     243:                if test -z $no_dynamic_default; then
                    244:                    no_dynamic_default=1
                    245:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    246:                fi
1.1       anton     247:                ;;
1.9       pazsan    248:        alpha*)
1.34      anton     249:                machine=alpha
1.58      anton     250:                #full IEEE FP support for more uniformity across platforms:
                    251:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    252:                ;;
1.69      anton     253:        power*|rs6000)
1.34      anton     254:                machine=power
1.46      anton     255:                $srcdir/mkinstalldirs arch/power
1.138     anton     256:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     257:                #long long is broken on (at least) gcc-2.95.* for PPC
1.165     anton     258:                test x$ac_cv_sizeof_long_long = x && 
                    259:                ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
                    260:                ac_cv_sizeof_long_long=0
1.31      anton     261:                ;;
1.1       anton     262:        *)
1.92      anton     263:                AC_MSG_WARN([Using a generic machine description])
                    264:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    265:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     266:                machine=generic
1.97      anton     267:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     268:                if test -z $no_dynamic_default; then
                    269:                    no_dynamic_default=1
                    270:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    271:                fi
1.1       anton     272: esac
1.10      anton     273: AC_SUBST(host)
1.151     anton     274: 
                    275: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
                    276: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
                    277:                   [number of registers in the default stack cache state for gforth-fast and gforth-native])
1.146     pazsan    278: 
1.173     anton     279: test x$GCC_PR15242_WORKAROUND = x ||
                    280: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
                    281:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
                    282: 
                    283: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
                    284: dnl generation on gccs affected by PR15242])
                    285: 
                    286: 
1.146     pazsan    287: if test "${enable_force_ll+set}" = set; then
                    288:    ac_includes_default="$ac_includes_default
                    289: #include \"arch/generic/128bit.h\""
                    290: fi
1.103     anton     291: 
                    292: dnl the following macro produces a warning with autoconf-2.1
                    293: AC_CHECK_SIZEOF(char *)
                    294: case "$ac_cv_sizeof_char_p" in
                    295:   2)
                    296:     wordsize=16
                    297:     ;;
                    298:   4)
                    299:     wordsize=32
                    300:     ;;
                    301:   8)
                    302:     wordsize=64
                    303:     ;;
                    304: esac
                    305: 
                    306: AC_CHECK_SIZEOF(char)
                    307: AC_CHECK_SIZEOF(short)
                    308: AC_CHECK_SIZEOF(int)
                    309: AC_CHECK_SIZEOF(long)
                    310: AC_CHECK_SIZEOF(long long)
                    311: AC_CHECK_SIZEOF(intptr_t)
                    312: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    313: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     314: 
                    315: AC_MSG_CHECKING([for a C type for cells])
                    316: ac_cv_int_type_cell=none
                    317: case "$ac_cv_sizeof_char_p" in
                    318:   $ac_cv_sizeof_int)
                    319:     ac_cv_int_type_cell=int
                    320:     ;;
                    321:   $ac_cv_sizeof_short)
                    322:     ac_cv_int_type_cell=short
                    323:     ;;
                    324:   $ac_cv_sizeof_char)
                    325:     ac_cv_int_type_cell=char
                    326:     ;;
                    327:   $ac_cv_sizeof_long)
                    328:     ac_cv_int_type_cell=long
                    329:     ;;
                    330:   $ac_cv_sizeof_long_long)
                    331:     ac_cv_int_type_cell="long long"
                    332:     ;;
                    333:   $ac_cv_sizeof_intptr_t)
                    334:     ac_cv_int_type_cell="intptr_t"
                    335:     ;;
                    336:   $ac_cv_sizeof_int128_t)
                    337:     ac_cv_int_type_cell="int128_t"
                    338:     ;;
                    339: esac
                    340: AC_MSG_RESULT($ac_cv_int_type_cell)
                    341: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    342: 
1.153     pazsan    343: AC_MSG_CHECKING([for a C type for wydes])
                    344: ac_cv_wyde_type_cell=none
                    345: case 2 in
                    346:   $ac_cv_sizeof_int)
                    347:     ac_cv_wyde_type_cell=int
                    348:     ;;
                    349:   $ac_cv_sizeof_short)
                    350:     ac_cv_wyde_type_cell=short
                    351:     ;;
                    352:   $ac_cv_sizeof_char)
                    353:     ac_cv_wyde_type_cell=char
                    354:     ;;
                    355:   $ac_cv_sizeof_long)
                    356:     ac_cv_wyde_type_cell=long
                    357:     ;;
                    358:   $ac_cv_sizeof_long_long)
                    359:     ac_cv_wyde_type_cell="long long"
                    360:     ;;
                    361:   $ac_cv_sizeof_intptr_t)
                    362:     ac_cv_wyde_type_cell="intptr_t"
                    363:     ;;
                    364:   $ac_cv_sizeof_int128_t)
                    365:     ac_cv_wyde_type_cell="int128_t"
                    366:     ;;
                    367: esac
                    368: AC_MSG_RESULT($ac_cv_wyde_type_cell)
                    369: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
                    370: 
                    371: AC_MSG_CHECKING([for a C type for tetrabytes])
                    372: ac_cv_tetrabyte_type_cell=none
                    373: case 4 in
                    374:   $ac_cv_sizeof_int)
                    375:     ac_cv_tetrabyte_type_cell=int
                    376:     ;;
                    377:   $ac_cv_sizeof_short)
                    378:     ac_cv_tetrabyte_type_cell=short
                    379:     ;;
                    380:   $ac_cv_sizeof_char)
                    381:     ac_cv_tetrabyte_type_cell=char
                    382:     ;;
                    383:   $ac_cv_sizeof_long)
                    384:     ac_cv_tetrabyte_type_cell=long
                    385:     ;;
                    386:   $ac_cv_sizeof_long_long)
                    387:     ac_cv_tetrabyte_type_cell="long long"
                    388:     ;;
                    389:   $ac_cv_sizeof_intptr_t)
                    390:     ac_cv_tetrabyte_type_cell="intptr_t"
                    391:     ;;
                    392:   $ac_cv_sizeof_int128_t)
                    393:     ac_cv_tetrabyte_type_cell="int128_t"
                    394:     ;;
                    395: esac
                    396: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
                    397: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
                    398: 
1.103     anton     399: AC_MSG_CHECKING([for a C type for double-cells])
                    400: ac_cv_int_type_double_cell=none
                    401: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    402:   $ac_cv_sizeof_short)
                    403:     ac_cv_int_type_double_cell=short
                    404:     ;;
                    405:   $ac_cv_sizeof_int)
                    406:     ac_cv_int_type_double_cell=int
                    407:     ;;
                    408:   $ac_cv_sizeof_long)
                    409:     ac_cv_int_type_double_cell=long
                    410:     ;;
                    411:   $ac_cv_sizeof_long_long)
                    412:     ac_cv_int_type_double_cell="long long"
                    413:     ;;
                    414:   $ac_cv_sizeof_intptr_t)
                    415:     ac_cv_int_type_double_cell="intptr_t"
                    416:     ;;
                    417:   $ac_cv_sizeof_int128_t)
                    418:     ac_cv_int_type_double_cell="int128_t"
                    419:     ;;
                    420: esac
                    421: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    422: 
                    423: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    424: ac_cv_int_type_double_ucell=none
                    425: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    426:   $ac_cv_sizeof_short)
                    427:     ac_cv_int_type_double_ucell="unsigned short"
                    428:     ;;
                    429:   $ac_cv_sizeof_int)
                    430:     ac_cv_int_type_double_ucell="unsigned int"
                    431:     ;;
                    432:   $ac_cv_sizeof_long)
                    433:     ac_cv_int_type_double_ucell="unsigned long"
                    434:     ;;
                    435:   $ac_cv_sizeof_long_long)
                    436:     ac_cv_int_type_double_ucell="unsigned long long"
                    437:     ;;
                    438:   $ac_cv_sizeof_intptr_t)
                    439:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    440:     ;;
                    441:   $ac_cv_sizeof_uint128_t)
                    442:     ac_cv_int_type_double_ucell="uint128_t"
                    443:     ;;
                    444: esac
                    445: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    446: 
                    447: if test "$ac_cv_int_type_double_cell" = none || \
                    448:    test "$ac_cv_int_type_double_ucell" = none
                    449: then
1.103     anton     450:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    451:        AC_LIBOBJ(dblsub)
                    452:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    453: else
                    454:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    455:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     456: fi
                    457: 
                    458: AC_TYPE_OFF_T
                    459: AC_CHECK_SIZEOF(off_t)
                    460: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    461: ac_small_off_t=$?
                    462: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     463: 
1.109     anton     464: ENGINE_FLAGS=
                    465: AC_SUBST(ENGINE_FLAGS)
                    466: 
                    467: # Try if GCC understands -fno-gcse
                    468: 
                    469: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    470: CFLAGS_1="$CFLAGS"
                    471: CFLAGS="$CFLAGS -fno-gcse"
                    472: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    473: CFLAGS="$CFLAGS_1"
                    474: AC_MSG_RESULT($ac_nogcse)
                    475: 
                    476: # Try if GCC understands -fno-strict-aliasing
                    477: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    478: CFLAGS_1="$CFLAGS"
                    479: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    480: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    481: CFLAGS="$CFLAGS_1"
                    482: AC_MSG_RESULT($ac_nostrictaliasing)
                    483: 
1.123     anton     484: # Try if GCC understands -fno-crossjumping
                    485: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    486: CFLAGS_1="$CFLAGS"
1.123     anton     487: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     488: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     489: CFLAGS="$CFLAGS_1"
1.124     pazsan    490: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    491: 
1.137     pazsan    492: # Try if GCC understands -fno-reorder-blocks
                    493: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    494: CFLAGS_1="$CFLAGS"
                    495: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    496: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    497: CFLAGS="$CFLAGS_1"
                    498: AC_MSG_RESULT($ac_noreorder_blocks)
                    499: 
1.130     anton     500: # Try if GCC understands __attribute__((unused))
                    501: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    502: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    503: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    504: AC_MSG_RESULT($MAYBE_UNUSED)
                    505: 
1.66      anton     506: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     507: AC_SUBST(asm_fs)
                    508: 
1.66      anton     509: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     510: AC_SUBST(disasm_fs)
                    511: 
1.116     anton     512: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     513: 
1.39      pazsan    514: case "$host_os" in
1.157     pazsan    515:        *win32*)
                    516:                # !!!FIXME!!! problems with cygwin and ';' as path separator
1.108     anton     517:                DIRSEP="\\\\"
1.127     anton     518:                PATHSEP=";"
1.142     anton     519:                #we want the builtins of command.com/cmd.exe and its
                    520:                # handling of .com files.
                    521:                #$COMSPEC contains the name of the Windows shell;
                    522:                # the ./ is there, because the bash does not recognize
                    523:                # absolute DOS filenames
                    524:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    525:                ;;
1.97      anton     526:        *darwin*)
                    527:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     528:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     529:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     530:                DIRSEP="/"
1.127     anton     531:                PATHSEP=":"
1.141     anton     532:                DEFAULTSYSTEMPREFIX=""
1.98      anton     533:                ;;
1.39      pazsan    534:        *)
1.88      pazsan    535:                DIRSEP="/"
1.127     anton     536:                PATHSEP=":"
1.141     anton     537:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    538:                ;;
                    539: esac
1.88      pazsan    540: AC_SUBST(DIRSEP)
1.89      pazsan    541: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     542: AC_SUBST(PATHSEP)
                    543: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     544: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    545: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    546: 
1.170     anton     547: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
1.172     anton     548: #This magic incantation  seems to be completely undocumented.
                    549: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
1.170     anton     550: 
1.1       anton     551: dnl Now a little support for DOS/DJGCC
1.30      pazsan    552: AC_SUBST(GFORTH_EXE)
1.172     anton     553: GFORTH_EXE=""
1.48      anton     554: AC_SUBST(GFORTHFAST_EXE)
1.172     anton     555: GFORTHFAST_EXE=""
1.83      anton     556: AC_SUBST(GFORTHITC_EXE)
                    557: GFORTHITC_EXE=""
1.30      pazsan    558: AC_SUBST(GFORTHDITC_EXE)
                    559: GFORTHDITC_EXE=""
1.27      anton     560: 
                    561: AC_SUBST(FORTHSIZES)
1.24      anton     562: 
1.104     anton     563: dnl if test "$PEEPHOLE" = "yes"
                    564: dnl then
                    565: dnl    PEEPHOLEFLAG="true"
                    566: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    567: dnl else
                    568: dnl    PEEPHOLEFLAG="false"
                    569: dnl fi
                    570: PEEPHOLEFLAG="true"
1.79      pazsan    571: AC_SUBST(PEEPHOLEFLAG)
                    572: 
1.1       anton     573: dnl copy commands for systems that don't have links
1.29      pazsan    574: AC_SUBST(LINK_KERNL)
                    575: LINK_KERNL=""
1.1       anton     576: 
                    577: #if test $host_os=dos
                    578: #then
                    579: #  echo Configuring for DOS!!!
                    580: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    581: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     582: #fi
                    583: 
                    584: dnl the following macro produces a warning with autoconf-2.1
                    585: AC_C_BIGENDIAN
1.23      pazsan    586: AC_SUBST(KERNEL)
1.1       anton     587: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    588: if test $ac_cv_c_bigendian = yes; then
                    589:   bytesex=b
1.23      pazsan    590:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     591: else
                    592:   bytesex=l
1.23      pazsan    593:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     594: fi
                    595: 
1.91      anton     596: #check how to do asm(".skip 16")
1.169     anton     597: #echo "CFLAGS=$CFLAGS"
                    598: #echo "ac_link=$ac_link"
1.92      anton     599: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     600: if test -z "$skipcode"; then
1.148     anton     601:     skipcode=no
                    602:     CFLAGS_1="$CFLAGS"
                    603:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     604:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    605:     do
1.91      anton     606:        AC_TRY_RUN(
1.136     anton     607: [int foo(int,int,int);
1.91      anton     608: main()
                    609: {
1.136     anton     610:   exit(foo(0,0,0)!=16);
1.91      anton     611: }
1.136     anton     612: int foo(int x, int y, int z)
1.91      anton     613: {
1.136     anton     614:   static void *labels[]={&&label1, &&label2};
1.91      anton     615:   if (x) {
1.136     anton     616:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     617:   label1:
1.148     anton     618:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     619:   label2: ;
                    620:   }
                    621:   {
                    622:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    623:   return labels[1]-labels[0];
1.91      anton     624:   }
1.136     anton     625: }]
1.92      anton     626:        ,skipcode=$i; break
                    627:        ,,)
1.136     anton     628:     done
1.148     anton     629:     CFLAGS=$CFLAGS_1
1.136     anton     630: fi
1.92      anton     631: AC_MSG_RESULT($skipcode)
                    632: if test "$skipcode" = no
                    633: then 
1.136     anton     634:     if test -z $no_dynamic_default; then
                    635:        no_dynamic_default=1
                    636:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    637:     fi
1.92      anton     638:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    639: else
                    640:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    641: fi
1.91      anton     642: 
1.174     anton     643: AC_MSG_CHECKING([if and how we can do comments in asm statements])
                    644: #the point here is to get asm statements that look different to
                    645: #gcc's "optimizer"
                    646: if test -z "$asmcomment"; then
                    647:     asmcomment=no
                    648:     CFLAGS_1="$CFLAGS"
                    649:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
                    650:     for i in '"# "' '"! "'; do
                    651:        AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
                    652:     done
                    653:     CFLAGS=$CFLAGS_1
                    654: fi
                    655: AC_MSG_RESULT($asmcomment)
                    656: if test "$asmcomment" != no
                    657: then 
                    658:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
                    659: fi
                    660: 
1.136     anton     661: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     662: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     663: 
1.1       anton     664: dnl Checks for programs.
                    665: AC_PROG_LN_S
1.95      anton     666: AC_PROG_INSTALL
1.163     pazsan    667: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
1.1       anton     668: 
                    669: dnl Checks for library functions
1.2       anton     670: dnl This check is just for making later checks link with libm.
                    671: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    672: AC_CHECK_LIB(m,asin)
1.31      anton     673: AC_CHECK_LIB(dl,dlopen)
1.152     pazsan    674: dnl check for libffi 2.x
                    675: AC_CHECK_LIB(ffi,ffi_call)
                    676: if test $ac_cv_lib_ffi_ffi_call = yes
                    677: then
                    678: LIBFFIFLAG="true"
                    679: FFCALLFLAG="false"
                    680: OLDCALLFLAG="false"
                    681: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
                    682: else
1.124     pazsan    683: dnl check for ffcall libraries
                    684: dnl unfortunately, these four calls are separated out into a library each.
                    685: AC_CHECK_LIB(avcall,__builtin_avcall)
                    686: AC_CHECK_LIB(callback,__vacall_r)
                    687: AC_CHECK_LIB(vacall,vacall)
                    688: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.152     pazsan    689: LIBFFIFLAG="false"
1.125     anton     690: FFCALLFLAG="false"
1.129     pazsan    691: OLDCALLFLAG="true"
                    692: 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])
                    693: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.152     pazsan    694: fi
                    695: AC_SUBST(LIBFFIFLAG)
1.125     anton     696: AC_SUBST(FFCALLFLAG)
1.129     pazsan    697: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    698: if test "$host_os" != "nextstep3"
                    699: then
                    700:        AC_FUNC_MEMCMP
                    701: fi
1.25      pazsan    702: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     703: AC_FUNC_FSEEKO
                    704: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     705: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     706: AC_DECL_SYS_SIGLIST
1.138     anton     707: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     708: AC_CHECK_FUNCS(expm1 log1p)
                    709: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     710: dnl No check for select, because our replacement is no good under
                    711: dnl anything but DOS
1.62      anton     712: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     713: AC_FUNC_FNMATCH
1.87      pazsan    714: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     715: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     716: AM_PATH_LISPDIR
1.1       anton     717: 
1.23      pazsan    718: kernel_fi=kernl${wordsize}${bytesex}.fi
                    719: AC_SUBST(kernel_fi)
1.50      jwilke    720: 
1.76      anton     721: #this breaks bindists
                    722: #dnl replace srource directory by absolute value
                    723: #if test $srcdir = "."; then srcdir=`pwd` 
                    724: #fi
1.8       anton     725: 
1.34      anton     726: AC_SUBST(machine)
1.95      anton     727: AC_CONFIG_FILES([
1.31      anton     728: Makefile
1.45      pazsan    729: Makedist
1.43      anton     730: gforthmi
1.80      anton     731: vmgen
1.79      pazsan    732: machpc.fs
1.159     pazsan    733: envos.fs
1.35      anton     734: engine/Makefile
1.161     pazsan    735: doc/version.texi
                    736: build-ec ])
1.95      anton     737: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     738: chmod +x gforthmi
1.80      anton     739: chmod +x vmgen
1.162     pazsan    740: chmod +x build-ec
1.95      anton     741: test -d kernel||mkdir kernel]],[[]])
                    742: AC_OUTPUT
1.44      anton     743: 

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