Annotation of gforth/configure.in, revision 1.187

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
1.187   ! anton      24: AC_INIT([gforth],[0.6.9-20070602],[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!
1.187   ! anton      29: UPDATED="June 02, 2007"
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="$withval")
                     88: 
1.185     pazsan     89: GCC_LD="\$(GCC)"
                     90: EC_MODE="false"
                     91: EC=""
                     92: engine2="engine2.o"
                     93: engine_fast2="engine-fast2.o"
                     94: no_dynamic=""
                     95: image_i=""
                     96: signals_o="io.o signals.o"
                     97: 
1.182     pazsan     98: AC_ARG_WITH(ec,
                     99:        AC_HELP_STRING([--with-ec=<arch>],
1.168     pazsan    100:                        [  Build gforth for systems without OS.]),
1.182     pazsan    101: [if test "$withval" = "no"; then
                    102:   echo "defining hosted system"
                    103: else
                    104:   echo "defining standalone system (${withval})"
1.168     pazsan    105:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
1.167     pazsan    106:   EC_MODE="true"
1.178     pazsan    107:   EC="-ec"
                    108:   engine2=""
                    109:   engine_fast2=""
                    110:   no_dynamic="-DNO_DYNAMIC"
                    111:   image_i="image.i"
1.182     pazsan    112:   if test "$withval" != "yes"; then
                    113:     signals_o="io-${withval}.o"
                    114:   else
                    115:     signals_o="io.o"
                    116:   fi
1.183     pazsan    117:   GCC_PATH=$(which $CC)
                    118:   LIB_PATH=${GCC_PATH%/*/*}
                    119:   GCC_LD="\$(LD)"
1.184     pazsan    120:   platform=${withval}
1.182     pazsan    121: fi])
1.167     pazsan    122: 
1.104     anton     123: #variables mentioned in INSTALL
1.123     anton     124: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton     125: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
1.151     anton     126: 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     127: 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)])
                    128: 
1.104     anton     129: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
1.183     pazsan    130: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
1.104     anton     131: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                    132: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                    133: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                    134: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                    135: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                    136: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                    137: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan    138: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton     139: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                    140: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.166     anton     141: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
1.174     anton     142: AC_ARG_VAR(asmcomment, [assembler comment start string])
1.175     anton     143: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
1.82      anton     144: 
1.96      anton     145: #set up feature test macros, so the tests get them right:
                    146: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton     147: AC_GNU_SOURCE
                    148: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                    149: 
                    150: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                    151: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                    152: dnl but not for _XOPEN_SOURCE)
                    153: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                    154: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                    155: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton     156: # turn on large file support with 64-bit off_t where available
1.105     anton     157: AC_SYS_LARGEFILE
                    158: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                    159: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     160: 
1.82      anton     161: #currently we force direct threading this way.  Eventually we should
                    162: #setup in the arch and engine files right
1.16      anton     163: 
1.15      pazsan    164: AC_PROG_CC
                    165: 
1.92      anton     166: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    167: 
1.15      pazsan    168: AC_SUBST(CC)
1.183     pazsan    169: AC_SUBST(GCC_LD)
1.9       pazsan    170: AC_SUBST(DEBUGFLAG)
1.178     pazsan    171: AC_SUBST(EC)
1.167     pazsan    172: AC_SUBST(EC_MODE)
1.178     pazsan    173: AC_SUBST(engine2)
                    174: AC_SUBST(engine_fast2)
                    175: AC_SUBST(no_dynamic)
                    176: AC_SUBST(image_i)
1.179     pazsan    177: AC_SUBST(signals_o)
1.7       anton     178: 
1.174     anton     179: #this is used to disable some (not generally essential) part of the
                    180: #Makefile that some makes don't grok.  It would be better to test for
                    181: #this specific Makefile feature than the make version.
1.128     pazsan    182: AC_MSG_CHECKING(make type)
1.174     anton     183: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
1.128     pazsan    184: GNUMAKE='#'
                    185: test "$make_type" = "GNU Make" && GNUMAKE=''
                    186: AC_MSG_RESULT($make_type)
                    187: AC_SUBST(GNUMAKE)
                    188: 
1.50      jwilke    189: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    190: OLDLDFLAGS=$LDFLAGS
                    191: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     192: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    193: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    194: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    195: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    196: AC_MSG_RESULT($ac_export_dynamic)
                    197: 
1.1       anton     198: #terminology is a bit unusual here: The host is the system on which
                    199: #gforth will run; the system on which configure will run is the `build'
                    200: AC_CANONICAL_HOST
                    201: case "$host_cpu" in
1.136     anton     202:        arm*)
                    203:                machine=arm
                    204:                CFLAGS="$CFLAGS -fomit-frame-pointer"
1.184     pazsan    205:                if test x$platform = xnxt; then
1.183     pazsan    206:                   CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
                    207:                fi
1.175     anton     208:                if test -z $arm_cacheflush; then
1.136     anton     209:                    no_dynamic_default=1
1.175     anton     210:                     arm_cacheflush=arch/arm/cacheflush0
1.136     anton     211:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    212:                fi
1.175     anton     213:                 AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
                    214:                 AC_LIBOBJ(../$arm_cacheflush)
1.177     anton     215:                 #longer skipcodes lead to problems on ARM, and it uses
                    216:                 #only 4-byte alignment anyway
                    217:                test "$skipcode" || skipcode="nop"
1.136     anton     218:                ;;
1.1       anton     219:        hppa*)
1.34      anton     220:                machine=hppa
1.46      anton     221:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    222:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     223:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    224:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     225:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     226:                ;;
                    227:        sparc*)
1.34      anton     228:                machine=sparc
1.1       anton     229:                ;;
1.31      anton     230:        i386)
1.34      anton     231:                machine=386
1.16      anton     232:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     233:                ;;
                    234:        i486)
1.34      anton     235:                machine=386
1.31      anton     236:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    237:                ;;
1.77      anton     238:        i*86)
1.34      anton     239:                machine=386
1.55      anton     240:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    241:                CFLAGS_1="$CFLAGS"
1.87      pazsan    242:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    243:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     244:                ;;
1.133     anton     245:        x86_64)
                    246:                machine=amd64
                    247:                ;;
1.136     anton     248:        ia64*)
                    249:                machine=ia64
                    250:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    251:                test "$skipcode" || skipcode="nop.i 0"
                    252:                #".skip 16" passes the test below,
                    253:                # but gives an assembler error in engine
                    254:                ;;
1.26      pazsan    255:         m68k)
1.34      anton     256:                machine=m68k
1.32      pazsan    257:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    258:                if test "$host_os" = "nextstep3"
                    259:                then
1.87      pazsan    260:                        AC_LIBOBJ(termios)
1.32      pazsan    261:                fi
1.26      pazsan    262:                ;;
1.1       anton     263:        mips*)
1.34      anton     264:                machine=mips
1.92      anton     265:                #dynamic native code has the following problems on MIPS:
                    266:                #
                    267:                #1) J/JAL seems relocatable, but is are only
                    268:                #relocatable within a 256MB-segment.  While we try to
                    269:                #get the linker to arrange this, there is no guarantee
                    270:                #that this will succeed (and if the user uses a lot of
                    271:                #memory, it is likely to fail).
                    272:                #
                    273:                #2) The way we generate dynamic native code may
                    274:                #violate MIPS architectural restrictions (in
                    275:                #particular, the delay slots of LW, MFLO, etc.)
                    276:                #
                    277:                #Therefore we disable dynamic native code by default:
1.136     anton     278:                if test -z $no_dynamic_default; then
                    279:                    no_dynamic_default=1
                    280:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    281:                fi
1.1       anton     282:                ;;
1.9       pazsan    283:        alpha*)
1.34      anton     284:                machine=alpha
1.58      anton     285:                #full IEEE FP support for more uniformity across platforms:
                    286:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    287:                ;;
1.69      anton     288:        power*|rs6000)
1.34      anton     289:                machine=power
1.46      anton     290:                $srcdir/mkinstalldirs arch/power
1.138     anton     291:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     292:                #long long is broken on (at least) gcc-2.95.* for PPC
1.165     anton     293:                test x$ac_cv_sizeof_long_long = x && 
                    294:                ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
                    295:                ac_cv_sizeof_long_long=0
1.31      anton     296:                ;;
1.1       anton     297:        *)
1.92      anton     298:                AC_MSG_WARN([Using a generic machine description])
                    299:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    300:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     301:                machine=generic
1.97      anton     302:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     303:                if test -z $no_dynamic_default; then
                    304:                    no_dynamic_default=1
                    305:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    306:                fi
1.1       anton     307: esac
1.10      anton     308: AC_SUBST(host)
1.151     anton     309: 
1.184     pazsan    310: MAKEINC=""
                    311: 
                    312: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
1.183     pazsan    313: if test x$EC_MODE = xtrue
                    314: then
1.184     pazsan    315:        echo "Check for arch/$machine/$platform/gforth.ld"
                    316:        if test -f arch/$machine/$platform/gforth.ld
1.183     pazsan    317:        then
1.184     pazsan    318:                LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
                    319:                if test x$platform = xnxt; then
1.183     pazsan    320:                        LIBS="$LIB_PATH/lib/gcc/arm-elf/$($CC --version | grep GCC | cut -d' ' -f3)/interwork/libgcc.a $LIB_PATH/arm-elf/lib/interwork/libc.a $LIBS"
                    321:                fi
                    322:        fi
1.184     pazsan    323:        if test -f arch/$machine/$platform/make.inc
                    324:        then
                    325:                MAKEINC="include ../arch/$machine/$platform/make.inc"
                    326:        fi
1.183     pazsan    327: fi
1.184     pazsan    328: AC_SUBST(MAKEINC)
1.183     pazsan    329: 
1.151     anton     330: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
                    331: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
                    332:                   [number of registers in the default stack cache state for gforth-fast and gforth-native])
1.146     pazsan    333: 
1.173     anton     334: test x$GCC_PR15242_WORKAROUND = x ||
                    335: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
                    336:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
                    337: 
                    338: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
                    339: dnl generation on gccs affected by PR15242])
                    340: 
                    341: 
1.146     pazsan    342: if test "${enable_force_ll+set}" = set; then
                    343:    ac_includes_default="$ac_includes_default
                    344: #include \"arch/generic/128bit.h\""
                    345: fi
1.103     anton     346: 
                    347: dnl the following macro produces a warning with autoconf-2.1
                    348: AC_CHECK_SIZEOF(char *)
                    349: case "$ac_cv_sizeof_char_p" in
                    350:   2)
                    351:     wordsize=16
                    352:     ;;
                    353:   4)
                    354:     wordsize=32
                    355:     ;;
                    356:   8)
                    357:     wordsize=64
                    358:     ;;
                    359: esac
                    360: 
1.183     pazsan    361: AC_CHECK_SIZEOF(void *)
                    362: case "$ac_cv_sizeof_void_p" in
                    363:   2)
                    364:     vwordsize=16
                    365:     ;;
                    366:   4)
                    367:     vwordsize=32
                    368:     ;;
                    369:   8)
                    370:     vwordsize=64
                    371:     ;;
                    372: esac
                    373: 
1.103     anton     374: AC_CHECK_SIZEOF(char)
                    375: AC_CHECK_SIZEOF(short)
                    376: AC_CHECK_SIZEOF(int)
                    377: AC_CHECK_SIZEOF(long)
                    378: AC_CHECK_SIZEOF(long long)
                    379: AC_CHECK_SIZEOF(intptr_t)
                    380: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    381: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     382: 
                    383: AC_MSG_CHECKING([for a C type for cells])
                    384: ac_cv_int_type_cell=none
                    385: case "$ac_cv_sizeof_char_p" in
                    386:   $ac_cv_sizeof_int)
                    387:     ac_cv_int_type_cell=int
                    388:     ;;
                    389:   $ac_cv_sizeof_short)
                    390:     ac_cv_int_type_cell=short
                    391:     ;;
                    392:   $ac_cv_sizeof_char)
                    393:     ac_cv_int_type_cell=char
                    394:     ;;
                    395:   $ac_cv_sizeof_long)
                    396:     ac_cv_int_type_cell=long
                    397:     ;;
                    398:   $ac_cv_sizeof_long_long)
                    399:     ac_cv_int_type_cell="long long"
                    400:     ;;
                    401:   $ac_cv_sizeof_intptr_t)
                    402:     ac_cv_int_type_cell="intptr_t"
                    403:     ;;
                    404:   $ac_cv_sizeof_int128_t)
                    405:     ac_cv_int_type_cell="int128_t"
                    406:     ;;
                    407: esac
                    408: AC_MSG_RESULT($ac_cv_int_type_cell)
                    409: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    410: 
1.153     pazsan    411: AC_MSG_CHECKING([for a C type for wydes])
                    412: ac_cv_wyde_type_cell=none
                    413: case 2 in
                    414:   $ac_cv_sizeof_int)
                    415:     ac_cv_wyde_type_cell=int
                    416:     ;;
                    417:   $ac_cv_sizeof_short)
                    418:     ac_cv_wyde_type_cell=short
                    419:     ;;
                    420:   $ac_cv_sizeof_char)
                    421:     ac_cv_wyde_type_cell=char
                    422:     ;;
                    423:   $ac_cv_sizeof_long)
                    424:     ac_cv_wyde_type_cell=long
                    425:     ;;
                    426:   $ac_cv_sizeof_long_long)
                    427:     ac_cv_wyde_type_cell="long long"
                    428:     ;;
                    429:   $ac_cv_sizeof_intptr_t)
                    430:     ac_cv_wyde_type_cell="intptr_t"
                    431:     ;;
                    432:   $ac_cv_sizeof_int128_t)
                    433:     ac_cv_wyde_type_cell="int128_t"
                    434:     ;;
                    435: esac
                    436: AC_MSG_RESULT($ac_cv_wyde_type_cell)
                    437: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
                    438: 
                    439: AC_MSG_CHECKING([for a C type for tetrabytes])
                    440: ac_cv_tetrabyte_type_cell=none
                    441: case 4 in
                    442:   $ac_cv_sizeof_int)
                    443:     ac_cv_tetrabyte_type_cell=int
                    444:     ;;
                    445:   $ac_cv_sizeof_short)
                    446:     ac_cv_tetrabyte_type_cell=short
                    447:     ;;
                    448:   $ac_cv_sizeof_char)
                    449:     ac_cv_tetrabyte_type_cell=char
                    450:     ;;
                    451:   $ac_cv_sizeof_long)
                    452:     ac_cv_tetrabyte_type_cell=long
                    453:     ;;
                    454:   $ac_cv_sizeof_long_long)
                    455:     ac_cv_tetrabyte_type_cell="long long"
                    456:     ;;
                    457:   $ac_cv_sizeof_intptr_t)
                    458:     ac_cv_tetrabyte_type_cell="intptr_t"
                    459:     ;;
                    460:   $ac_cv_sizeof_int128_t)
                    461:     ac_cv_tetrabyte_type_cell="int128_t"
                    462:     ;;
                    463: esac
                    464: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
                    465: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
                    466: 
1.103     anton     467: AC_MSG_CHECKING([for a C type for double-cells])
                    468: ac_cv_int_type_double_cell=none
                    469: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    470:   $ac_cv_sizeof_short)
                    471:     ac_cv_int_type_double_cell=short
                    472:     ;;
                    473:   $ac_cv_sizeof_int)
                    474:     ac_cv_int_type_double_cell=int
                    475:     ;;
                    476:   $ac_cv_sizeof_long)
                    477:     ac_cv_int_type_double_cell=long
                    478:     ;;
                    479:   $ac_cv_sizeof_long_long)
                    480:     ac_cv_int_type_double_cell="long long"
                    481:     ;;
                    482:   $ac_cv_sizeof_intptr_t)
                    483:     ac_cv_int_type_double_cell="intptr_t"
                    484:     ;;
                    485:   $ac_cv_sizeof_int128_t)
                    486:     ac_cv_int_type_double_cell="int128_t"
                    487:     ;;
                    488: esac
                    489: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    490: 
                    491: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    492: ac_cv_int_type_double_ucell=none
                    493: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    494:   $ac_cv_sizeof_short)
                    495:     ac_cv_int_type_double_ucell="unsigned short"
                    496:     ;;
                    497:   $ac_cv_sizeof_int)
                    498:     ac_cv_int_type_double_ucell="unsigned int"
                    499:     ;;
                    500:   $ac_cv_sizeof_long)
                    501:     ac_cv_int_type_double_ucell="unsigned long"
                    502:     ;;
                    503:   $ac_cv_sizeof_long_long)
                    504:     ac_cv_int_type_double_ucell="unsigned long long"
                    505:     ;;
                    506:   $ac_cv_sizeof_intptr_t)
                    507:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    508:     ;;
                    509:   $ac_cv_sizeof_uint128_t)
                    510:     ac_cv_int_type_double_ucell="uint128_t"
                    511:     ;;
                    512: esac
                    513: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    514: 
                    515: if test "$ac_cv_int_type_double_cell" = none || \
                    516:    test "$ac_cv_int_type_double_ucell" = none
                    517: then
1.103     anton     518:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    519:        AC_LIBOBJ(dblsub)
                    520:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    521: else
                    522:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    523:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     524: fi
                    525: 
                    526: AC_TYPE_OFF_T
                    527: AC_CHECK_SIZEOF(off_t)
                    528: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    529: ac_small_off_t=$?
                    530: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     531: 
1.109     anton     532: ENGINE_FLAGS=
                    533: AC_SUBST(ENGINE_FLAGS)
                    534: 
                    535: # Try if GCC understands -fno-gcse
                    536: 
                    537: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    538: CFLAGS_1="$CFLAGS"
                    539: CFLAGS="$CFLAGS -fno-gcse"
                    540: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    541: CFLAGS="$CFLAGS_1"
                    542: AC_MSG_RESULT($ac_nogcse)
                    543: 
                    544: # Try if GCC understands -fno-strict-aliasing
                    545: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    546: CFLAGS_1="$CFLAGS"
                    547: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    548: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    549: CFLAGS="$CFLAGS_1"
                    550: AC_MSG_RESULT($ac_nostrictaliasing)
                    551: 
1.123     anton     552: # Try if GCC understands -fno-crossjumping
                    553: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    554: CFLAGS_1="$CFLAGS"
1.123     anton     555: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     556: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     557: CFLAGS="$CFLAGS_1"
1.124     pazsan    558: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    559: 
1.137     pazsan    560: # Try if GCC understands -fno-reorder-blocks
                    561: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    562: CFLAGS_1="$CFLAGS"
                    563: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    564: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    565: CFLAGS="$CFLAGS_1"
                    566: AC_MSG_RESULT($ac_noreorder_blocks)
                    567: 
1.130     anton     568: # Try if GCC understands __attribute__((unused))
                    569: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    570: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    571: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    572: AC_MSG_RESULT($MAYBE_UNUSED)
                    573: 
1.66      anton     574: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     575: AC_SUBST(asm_fs)
                    576: 
1.66      anton     577: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     578: AC_SUBST(disasm_fs)
                    579: 
1.116     anton     580: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     581: 
1.39      pazsan    582: case "$host_os" in
1.157     pazsan    583:        *win32*)
                    584:                # !!!FIXME!!! problems with cygwin and ';' as path separator
1.108     anton     585:                DIRSEP="\\\\"
1.127     anton     586:                PATHSEP=";"
1.142     anton     587:                #we want the builtins of command.com/cmd.exe and its
                    588:                # handling of .com files.
                    589:                #$COMSPEC contains the name of the Windows shell;
                    590:                # the ./ is there, because the bash does not recognize
                    591:                # absolute DOS filenames
                    592:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    593:                ;;
1.97      anton     594:        *darwin*)
                    595:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     596:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     597:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     598:                DIRSEP="/"
1.127     anton     599:                PATHSEP=":"
1.141     anton     600:                DEFAULTSYSTEMPREFIX=""
1.98      anton     601:                ;;
1.39      pazsan    602:        *)
1.88      pazsan    603:                DIRSEP="/"
1.127     anton     604:                PATHSEP=":"
1.141     anton     605:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    606:                ;;
                    607: esac
1.88      pazsan    608: AC_SUBST(DIRSEP)
1.89      pazsan    609: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     610: AC_SUBST(PATHSEP)
                    611: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     612: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    613: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    614: 
1.170     anton     615: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
1.172     anton     616: #This magic incantation  seems to be completely undocumented.
                    617: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
1.170     anton     618: 
1.1       anton     619: dnl Now a little support for DOS/DJGCC
1.30      pazsan    620: AC_SUBST(GFORTH_EXE)
1.172     anton     621: GFORTH_EXE=""
1.48      anton     622: AC_SUBST(GFORTHFAST_EXE)
1.172     anton     623: GFORTHFAST_EXE=""
1.83      anton     624: AC_SUBST(GFORTHITC_EXE)
                    625: GFORTHITC_EXE=""
1.30      pazsan    626: AC_SUBST(GFORTHDITC_EXE)
                    627: GFORTHDITC_EXE=""
1.27      anton     628: 
                    629: AC_SUBST(FORTHSIZES)
1.24      anton     630: 
1.104     anton     631: dnl if test "$PEEPHOLE" = "yes"
                    632: dnl then
                    633: dnl    PEEPHOLEFLAG="true"
                    634: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    635: dnl else
                    636: dnl    PEEPHOLEFLAG="false"
                    637: dnl fi
                    638: PEEPHOLEFLAG="true"
1.79      pazsan    639: AC_SUBST(PEEPHOLEFLAG)
                    640: 
1.1       anton     641: dnl copy commands for systems that don't have links
1.29      pazsan    642: AC_SUBST(LINK_KERNL)
                    643: LINK_KERNL=""
1.1       anton     644: 
                    645: #if test $host_os=dos
                    646: #then
                    647: #  echo Configuring for DOS!!!
                    648: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    649: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     650: #fi
                    651: 
                    652: dnl the following macro produces a warning with autoconf-2.1
                    653: AC_C_BIGENDIAN
1.23      pazsan    654: AC_SUBST(KERNEL)
1.1       anton     655: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    656: if test $ac_cv_c_bigendian = yes; then
                    657:   bytesex=b
1.23      pazsan    658:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     659: else
                    660:   bytesex=l
1.23      pazsan    661:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     662: fi
                    663: 
1.91      anton     664: #check how to do asm(".skip 16")
1.169     anton     665: #echo "CFLAGS=$CFLAGS"
                    666: #echo "ac_link=$ac_link"
1.92      anton     667: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     668: if test -z "$skipcode"; then
1.148     anton     669:     skipcode=no
                    670:     CFLAGS_1="$CFLAGS"
                    671:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     672:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    673:     do
1.91      anton     674:        AC_TRY_RUN(
1.136     anton     675: [int foo(int,int,int);
1.91      anton     676: main()
                    677: {
1.136     anton     678:   exit(foo(0,0,0)!=16);
1.91      anton     679: }
1.136     anton     680: int foo(int x, int y, int z)
1.91      anton     681: {
1.136     anton     682:   static void *labels[]={&&label1, &&label2};
1.91      anton     683:   if (x) {
1.136     anton     684:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     685:   label1:
1.148     anton     686:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     687:   label2: ;
                    688:   }
                    689:   {
                    690:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    691:   return labels[1]-labels[0];
1.91      anton     692:   }
1.136     anton     693: }]
1.92      anton     694:        ,skipcode=$i; break
                    695:        ,,)
1.136     anton     696:     done
1.148     anton     697:     CFLAGS=$CFLAGS_1
1.136     anton     698: fi
1.92      anton     699: AC_MSG_RESULT($skipcode)
                    700: if test "$skipcode" = no
                    701: then 
1.136     anton     702:     if test -z $no_dynamic_default; then
                    703:        no_dynamic_default=1
                    704:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    705:     fi
1.92      anton     706:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    707: else
                    708:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    709: fi
1.91      anton     710: 
1.174     anton     711: AC_MSG_CHECKING([if and how we can do comments in asm statements])
                    712: #the point here is to get asm statements that look different to
                    713: #gcc's "optimizer"
                    714: if test -z "$asmcomment"; then
                    715:     asmcomment=no
                    716:     CFLAGS_1="$CFLAGS"
                    717:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.176     anton     718:     for i in '"# "' '"! "' '"; "'; do
1.174     anton     719:        AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
                    720:     done
                    721:     CFLAGS=$CFLAGS_1
                    722: fi
                    723: AC_MSG_RESULT($asmcomment)
                    724: if test "$asmcomment" != no
                    725: then 
                    726:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
                    727: fi
                    728: 
1.136     anton     729: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     730: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     731: 
1.1       anton     732: dnl Checks for programs.
                    733: AC_PROG_LN_S
1.95      anton     734: AC_PROG_INSTALL
1.163     pazsan    735: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
1.1       anton     736: 
                    737: dnl Checks for library functions
1.2       anton     738: dnl This check is just for making later checks link with libm.
                    739: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    740: AC_CHECK_LIB(m,asin)
1.31      anton     741: AC_CHECK_LIB(dl,dlopen)
1.152     pazsan    742: dnl check for libffi 2.x
                    743: AC_CHECK_LIB(ffi,ffi_call)
                    744: if test $ac_cv_lib_ffi_ffi_call = yes
                    745: then
                    746: LIBFFIFLAG="true"
                    747: FFCALLFLAG="false"
                    748: OLDCALLFLAG="false"
                    749: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
                    750: else
1.124     pazsan    751: dnl check for ffcall libraries
                    752: dnl unfortunately, these four calls are separated out into a library each.
                    753: AC_CHECK_LIB(avcall,__builtin_avcall)
                    754: AC_CHECK_LIB(callback,__vacall_r)
                    755: AC_CHECK_LIB(vacall,vacall)
                    756: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.152     pazsan    757: LIBFFIFLAG="false"
1.125     anton     758: FFCALLFLAG="false"
1.129     pazsan    759: OLDCALLFLAG="true"
                    760: 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])
                    761: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.152     pazsan    762: fi
                    763: AC_SUBST(LIBFFIFLAG)
1.125     anton     764: AC_SUBST(FFCALLFLAG)
1.129     pazsan    765: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    766: if test "$host_os" != "nextstep3"
                    767: then
                    768:        AC_FUNC_MEMCMP
                    769: fi
1.25      pazsan    770: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     771: AC_FUNC_FSEEKO
1.186     anton     772: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
1.111     anton     773: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     774: AC_DECL_SYS_SIGLIST
1.138     anton     775: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     776: AC_CHECK_FUNCS(expm1 log1p)
                    777: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     778: dnl No check for select, because our replacement is no good under
                    779: dnl anything but DOS
1.62      anton     780: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     781: AC_FUNC_FNMATCH
1.87      pazsan    782: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     783: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     784: AM_PATH_LISPDIR
1.1       anton     785: 
1.183     pazsan    786: kernel_fi=kernl${vwordsize}${bytesex}.fi
1.178     pazsan    787: include_fi=kernl${wordsize}${bytesex}${EC}.fi
1.23      pazsan    788: AC_SUBST(kernel_fi)
1.178     pazsan    789: AC_SUBST(include_fi)
1.50      jwilke    790: 
1.76      anton     791: #this breaks bindists
                    792: #dnl replace srource directory by absolute value
                    793: #if test $srcdir = "."; then srcdir=`pwd` 
                    794: #fi
1.8       anton     795: 
1.34      anton     796: AC_SUBST(machine)
1.95      anton     797: AC_CONFIG_FILES([
1.31      anton     798: Makefile
1.45      pazsan    799: Makedist
1.43      anton     800: gforthmi
1.80      anton     801: vmgen
1.79      pazsan    802: machpc.fs
1.159     pazsan    803: envos.fs
1.35      anton     804: engine/Makefile
1.161     pazsan    805: doc/version.texi
                    806: build-ec ])
1.95      anton     807: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     808: chmod +x gforthmi
1.80      anton     809: chmod +x vmgen
1.162     pazsan    810: chmod +x build-ec
1.95      anton     811: test -d kernel||mkdir kernel]],[[]])
                    812: AC_OUTPUT
1.44      anton     813: 

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