Annotation of gforth/configure.in, revision 1.182

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
1.181     pazsan     24: AC_INIT([gforth],[0.6.9-20070401],[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="$withval")
                     88: 
1.182   ! pazsan     89: AC_ARG_WITH(ec,
        !            90:        AC_HELP_STRING([--with-ec=<arch>],
1.168     pazsan     91:                        [  Build gforth for systems without OS.]),
1.182   ! pazsan     92: [if test "$withval" = "no"; then
        !            93:   echo "defining hosted system"
        !            94:   EC_MODE="false"
        !            95:   EC=""
        !            96:   engine2="engine2.o"
        !            97:   engine_fast2="engine-fast2.o"
        !            98:   no_dynamic=""
        !            99:   image_i=""
        !           100:   signals_o="io.o signals.o"
        !           101: else
        !           102:   echo "defining standalone system (${withval})"
1.168     pazsan    103:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
1.167     pazsan    104:   EC_MODE="true"
1.178     pazsan    105:   EC="-ec"
                    106:   engine2=""
                    107:   engine_fast2=""
                    108:   no_dynamic="-DNO_DYNAMIC"
                    109:   image_i="image.i"
1.182   ! pazsan    110:   if test "$withval" != "yes"; then
        !           111:     signals_o="io-${withval}.o"
        !           112:   else
        !           113:     signals_o="io.o"
        !           114:   fi
        !           115: fi])
1.167     pazsan    116: 
1.104     anton     117: #variables mentioned in INSTALL
1.123     anton     118: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton     119: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
1.151     anton     120: 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     121: 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)])
                    122: 
1.104     anton     123: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
                    124: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                    125: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                    126: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                    127: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                    128: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                    129: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                    130: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan    131: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton     132: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                    133: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.166     anton     134: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
1.174     anton     135: AC_ARG_VAR(asmcomment, [assembler comment start string])
1.175     anton     136: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
1.82      anton     137: 
1.96      anton     138: #set up feature test macros, so the tests get them right:
                    139: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton     140: AC_GNU_SOURCE
                    141: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                    142: 
                    143: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                    144: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                    145: dnl but not for _XOPEN_SOURCE)
                    146: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                    147: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                    148: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton     149: # turn on large file support with 64-bit off_t where available
1.105     anton     150: AC_SYS_LARGEFILE
                    151: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                    152: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     153: 
1.82      anton     154: #currently we force direct threading this way.  Eventually we should
                    155: #setup in the arch and engine files right
1.16      anton     156: 
1.15      pazsan    157: AC_PROG_CC
                    158: 
1.92      anton     159: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    160: 
1.15      pazsan    161: AC_SUBST(CC)
1.9       pazsan    162: AC_SUBST(DEBUGFLAG)
1.178     pazsan    163: AC_SUBST(EC)
1.167     pazsan    164: AC_SUBST(EC_MODE)
1.178     pazsan    165: AC_SUBST(engine2)
                    166: AC_SUBST(engine_fast2)
                    167: AC_SUBST(no_dynamic)
                    168: AC_SUBST(image_i)
1.179     pazsan    169: AC_SUBST(signals_o)
1.7       anton     170: 
1.174     anton     171: #this is used to disable some (not generally essential) part of the
                    172: #Makefile that some makes don't grok.  It would be better to test for
                    173: #this specific Makefile feature than the make version.
1.128     pazsan    174: AC_MSG_CHECKING(make type)
1.174     anton     175: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
1.128     pazsan    176: GNUMAKE='#'
                    177: test "$make_type" = "GNU Make" && GNUMAKE=''
                    178: AC_MSG_RESULT($make_type)
                    179: AC_SUBST(GNUMAKE)
                    180: 
1.50      jwilke    181: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    182: OLDLDFLAGS=$LDFLAGS
                    183: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     184: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    185: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    186: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    187: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    188: AC_MSG_RESULT($ac_export_dynamic)
                    189: 
1.1       anton     190: #terminology is a bit unusual here: The host is the system on which
                    191: #gforth will run; the system on which configure will run is the `build'
                    192: AC_CANONICAL_HOST
                    193: case "$host_cpu" in
1.136     anton     194:        arm*)
                    195:                machine=arm
                    196:                CFLAGS="$CFLAGS -fomit-frame-pointer"
1.175     anton     197:                if test -z $arm_cacheflush; then
1.136     anton     198:                    no_dynamic_default=1
1.175     anton     199:                     arm_cacheflush=arch/arm/cacheflush0
1.136     anton     200:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    201:                fi
1.175     anton     202:                 AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
                    203:                 AC_LIBOBJ(../$arm_cacheflush)
1.177     anton     204:                 #longer skipcodes lead to problems on ARM, and it uses
                    205:                 #only 4-byte alignment anyway
                    206:                test "$skipcode" || skipcode="nop"
1.136     anton     207:                ;;
1.1       anton     208:        hppa*)
1.34      anton     209:                machine=hppa
1.46      anton     210:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    211:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     212:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    213:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     214:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     215:                ;;
                    216:        sparc*)
1.34      anton     217:                machine=sparc
1.1       anton     218:                ;;
1.31      anton     219:        i386)
1.34      anton     220:                machine=386
1.16      anton     221:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     222:                ;;
                    223:        i486)
1.34      anton     224:                machine=386
1.31      anton     225:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    226:                ;;
1.77      anton     227:        i*86)
1.34      anton     228:                machine=386
1.55      anton     229:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    230:                CFLAGS_1="$CFLAGS"
1.87      pazsan    231:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    232:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     233:                ;;
1.133     anton     234:        x86_64)
                    235:                machine=amd64
                    236:                ;;
1.136     anton     237:        ia64*)
                    238:                machine=ia64
                    239:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    240:                test "$skipcode" || skipcode="nop.i 0"
                    241:                #".skip 16" passes the test below,
                    242:                # but gives an assembler error in engine
                    243:                ;;
1.26      pazsan    244:         m68k)
1.34      anton     245:                machine=m68k
1.32      pazsan    246:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    247:                if test "$host_os" = "nextstep3"
                    248:                then
1.87      pazsan    249:                        AC_LIBOBJ(termios)
1.32      pazsan    250:                fi
1.26      pazsan    251:                ;;
1.1       anton     252:        mips*)
1.34      anton     253:                machine=mips
1.92      anton     254:                #dynamic native code has the following problems on MIPS:
                    255:                #
                    256:                #1) J/JAL seems relocatable, but is are only
                    257:                #relocatable within a 256MB-segment.  While we try to
                    258:                #get the linker to arrange this, there is no guarantee
                    259:                #that this will succeed (and if the user uses a lot of
                    260:                #memory, it is likely to fail).
                    261:                #
                    262:                #2) The way we generate dynamic native code may
                    263:                #violate MIPS architectural restrictions (in
                    264:                #particular, the delay slots of LW, MFLO, etc.)
                    265:                #
                    266:                #Therefore we disable dynamic native code by default:
1.136     anton     267:                if test -z $no_dynamic_default; then
                    268:                    no_dynamic_default=1
                    269:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    270:                fi
1.1       anton     271:                ;;
1.9       pazsan    272:        alpha*)
1.34      anton     273:                machine=alpha
1.58      anton     274:                #full IEEE FP support for more uniformity across platforms:
                    275:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    276:                ;;
1.69      anton     277:        power*|rs6000)
1.34      anton     278:                machine=power
1.46      anton     279:                $srcdir/mkinstalldirs arch/power
1.138     anton     280:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     281:                #long long is broken on (at least) gcc-2.95.* for PPC
1.165     anton     282:                test x$ac_cv_sizeof_long_long = x && 
                    283:                ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
                    284:                ac_cv_sizeof_long_long=0
1.31      anton     285:                ;;
1.1       anton     286:        *)
1.92      anton     287:                AC_MSG_WARN([Using a generic machine description])
                    288:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    289:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     290:                machine=generic
1.97      anton     291:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     292:                if test -z $no_dynamic_default; then
                    293:                    no_dynamic_default=1
                    294:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    295:                fi
1.1       anton     296: esac
1.10      anton     297: AC_SUBST(host)
1.151     anton     298: 
                    299: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
                    300: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
                    301:                   [number of registers in the default stack cache state for gforth-fast and gforth-native])
1.146     pazsan    302: 
1.173     anton     303: test x$GCC_PR15242_WORKAROUND = x ||
                    304: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
                    305:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
                    306: 
                    307: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
                    308: dnl generation on gccs affected by PR15242])
                    309: 
                    310: 
1.146     pazsan    311: if test "${enable_force_ll+set}" = set; then
                    312:    ac_includes_default="$ac_includes_default
                    313: #include \"arch/generic/128bit.h\""
                    314: fi
1.103     anton     315: 
                    316: dnl the following macro produces a warning with autoconf-2.1
                    317: AC_CHECK_SIZEOF(char *)
                    318: case "$ac_cv_sizeof_char_p" in
                    319:   2)
                    320:     wordsize=16
                    321:     ;;
                    322:   4)
                    323:     wordsize=32
                    324:     ;;
                    325:   8)
                    326:     wordsize=64
                    327:     ;;
                    328: esac
                    329: 
                    330: AC_CHECK_SIZEOF(char)
                    331: AC_CHECK_SIZEOF(short)
                    332: AC_CHECK_SIZEOF(int)
                    333: AC_CHECK_SIZEOF(long)
                    334: AC_CHECK_SIZEOF(long long)
                    335: AC_CHECK_SIZEOF(intptr_t)
                    336: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    337: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     338: 
                    339: AC_MSG_CHECKING([for a C type for cells])
                    340: ac_cv_int_type_cell=none
                    341: case "$ac_cv_sizeof_char_p" in
                    342:   $ac_cv_sizeof_int)
                    343:     ac_cv_int_type_cell=int
                    344:     ;;
                    345:   $ac_cv_sizeof_short)
                    346:     ac_cv_int_type_cell=short
                    347:     ;;
                    348:   $ac_cv_sizeof_char)
                    349:     ac_cv_int_type_cell=char
                    350:     ;;
                    351:   $ac_cv_sizeof_long)
                    352:     ac_cv_int_type_cell=long
                    353:     ;;
                    354:   $ac_cv_sizeof_long_long)
                    355:     ac_cv_int_type_cell="long long"
                    356:     ;;
                    357:   $ac_cv_sizeof_intptr_t)
                    358:     ac_cv_int_type_cell="intptr_t"
                    359:     ;;
                    360:   $ac_cv_sizeof_int128_t)
                    361:     ac_cv_int_type_cell="int128_t"
                    362:     ;;
                    363: esac
                    364: AC_MSG_RESULT($ac_cv_int_type_cell)
                    365: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    366: 
1.153     pazsan    367: AC_MSG_CHECKING([for a C type for wydes])
                    368: ac_cv_wyde_type_cell=none
                    369: case 2 in
                    370:   $ac_cv_sizeof_int)
                    371:     ac_cv_wyde_type_cell=int
                    372:     ;;
                    373:   $ac_cv_sizeof_short)
                    374:     ac_cv_wyde_type_cell=short
                    375:     ;;
                    376:   $ac_cv_sizeof_char)
                    377:     ac_cv_wyde_type_cell=char
                    378:     ;;
                    379:   $ac_cv_sizeof_long)
                    380:     ac_cv_wyde_type_cell=long
                    381:     ;;
                    382:   $ac_cv_sizeof_long_long)
                    383:     ac_cv_wyde_type_cell="long long"
                    384:     ;;
                    385:   $ac_cv_sizeof_intptr_t)
                    386:     ac_cv_wyde_type_cell="intptr_t"
                    387:     ;;
                    388:   $ac_cv_sizeof_int128_t)
                    389:     ac_cv_wyde_type_cell="int128_t"
                    390:     ;;
                    391: esac
                    392: AC_MSG_RESULT($ac_cv_wyde_type_cell)
                    393: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
                    394: 
                    395: AC_MSG_CHECKING([for a C type for tetrabytes])
                    396: ac_cv_tetrabyte_type_cell=none
                    397: case 4 in
                    398:   $ac_cv_sizeof_int)
                    399:     ac_cv_tetrabyte_type_cell=int
                    400:     ;;
                    401:   $ac_cv_sizeof_short)
                    402:     ac_cv_tetrabyte_type_cell=short
                    403:     ;;
                    404:   $ac_cv_sizeof_char)
                    405:     ac_cv_tetrabyte_type_cell=char
                    406:     ;;
                    407:   $ac_cv_sizeof_long)
                    408:     ac_cv_tetrabyte_type_cell=long
                    409:     ;;
                    410:   $ac_cv_sizeof_long_long)
                    411:     ac_cv_tetrabyte_type_cell="long long"
                    412:     ;;
                    413:   $ac_cv_sizeof_intptr_t)
                    414:     ac_cv_tetrabyte_type_cell="intptr_t"
                    415:     ;;
                    416:   $ac_cv_sizeof_int128_t)
                    417:     ac_cv_tetrabyte_type_cell="int128_t"
                    418:     ;;
                    419: esac
                    420: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
                    421: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
                    422: 
1.103     anton     423: AC_MSG_CHECKING([for a C type for double-cells])
                    424: ac_cv_int_type_double_cell=none
                    425: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    426:   $ac_cv_sizeof_short)
                    427:     ac_cv_int_type_double_cell=short
                    428:     ;;
                    429:   $ac_cv_sizeof_int)
                    430:     ac_cv_int_type_double_cell=int
                    431:     ;;
                    432:   $ac_cv_sizeof_long)
                    433:     ac_cv_int_type_double_cell=long
                    434:     ;;
                    435:   $ac_cv_sizeof_long_long)
                    436:     ac_cv_int_type_double_cell="long long"
                    437:     ;;
                    438:   $ac_cv_sizeof_intptr_t)
                    439:     ac_cv_int_type_double_cell="intptr_t"
                    440:     ;;
                    441:   $ac_cv_sizeof_int128_t)
                    442:     ac_cv_int_type_double_cell="int128_t"
                    443:     ;;
                    444: esac
                    445: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    446: 
                    447: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    448: ac_cv_int_type_double_ucell=none
                    449: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    450:   $ac_cv_sizeof_short)
                    451:     ac_cv_int_type_double_ucell="unsigned short"
                    452:     ;;
                    453:   $ac_cv_sizeof_int)
                    454:     ac_cv_int_type_double_ucell="unsigned int"
                    455:     ;;
                    456:   $ac_cv_sizeof_long)
                    457:     ac_cv_int_type_double_ucell="unsigned long"
                    458:     ;;
                    459:   $ac_cv_sizeof_long_long)
                    460:     ac_cv_int_type_double_ucell="unsigned long long"
                    461:     ;;
                    462:   $ac_cv_sizeof_intptr_t)
                    463:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    464:     ;;
                    465:   $ac_cv_sizeof_uint128_t)
                    466:     ac_cv_int_type_double_ucell="uint128_t"
                    467:     ;;
                    468: esac
                    469: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    470: 
                    471: if test "$ac_cv_int_type_double_cell" = none || \
                    472:    test "$ac_cv_int_type_double_ucell" = none
                    473: then
1.103     anton     474:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    475:        AC_LIBOBJ(dblsub)
                    476:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    477: else
                    478:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    479:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     480: fi
                    481: 
                    482: AC_TYPE_OFF_T
                    483: AC_CHECK_SIZEOF(off_t)
                    484: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    485: ac_small_off_t=$?
                    486: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     487: 
1.109     anton     488: ENGINE_FLAGS=
                    489: AC_SUBST(ENGINE_FLAGS)
                    490: 
                    491: # Try if GCC understands -fno-gcse
                    492: 
                    493: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    494: CFLAGS_1="$CFLAGS"
                    495: CFLAGS="$CFLAGS -fno-gcse"
                    496: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    497: CFLAGS="$CFLAGS_1"
                    498: AC_MSG_RESULT($ac_nogcse)
                    499: 
                    500: # Try if GCC understands -fno-strict-aliasing
                    501: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    502: CFLAGS_1="$CFLAGS"
                    503: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    504: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    505: CFLAGS="$CFLAGS_1"
                    506: AC_MSG_RESULT($ac_nostrictaliasing)
                    507: 
1.123     anton     508: # Try if GCC understands -fno-crossjumping
                    509: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    510: CFLAGS_1="$CFLAGS"
1.123     anton     511: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     512: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     513: CFLAGS="$CFLAGS_1"
1.124     pazsan    514: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    515: 
1.137     pazsan    516: # Try if GCC understands -fno-reorder-blocks
                    517: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    518: CFLAGS_1="$CFLAGS"
                    519: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    520: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    521: CFLAGS="$CFLAGS_1"
                    522: AC_MSG_RESULT($ac_noreorder_blocks)
                    523: 
1.130     anton     524: # Try if GCC understands __attribute__((unused))
                    525: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    526: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    527: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    528: AC_MSG_RESULT($MAYBE_UNUSED)
                    529: 
1.66      anton     530: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     531: AC_SUBST(asm_fs)
                    532: 
1.66      anton     533: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     534: AC_SUBST(disasm_fs)
                    535: 
1.116     anton     536: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     537: 
1.39      pazsan    538: case "$host_os" in
1.157     pazsan    539:        *win32*)
                    540:                # !!!FIXME!!! problems with cygwin and ';' as path separator
1.108     anton     541:                DIRSEP="\\\\"
1.127     anton     542:                PATHSEP=";"
1.142     anton     543:                #we want the builtins of command.com/cmd.exe and its
                    544:                # handling of .com files.
                    545:                #$COMSPEC contains the name of the Windows shell;
                    546:                # the ./ is there, because the bash does not recognize
                    547:                # absolute DOS filenames
                    548:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    549:                ;;
1.97      anton     550:        *darwin*)
                    551:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     552:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     553:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     554:                DIRSEP="/"
1.127     anton     555:                PATHSEP=":"
1.141     anton     556:                DEFAULTSYSTEMPREFIX=""
1.98      anton     557:                ;;
1.39      pazsan    558:        *)
1.88      pazsan    559:                DIRSEP="/"
1.127     anton     560:                PATHSEP=":"
1.141     anton     561:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    562:                ;;
                    563: esac
1.88      pazsan    564: AC_SUBST(DIRSEP)
1.89      pazsan    565: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     566: AC_SUBST(PATHSEP)
                    567: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     568: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    569: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    570: 
1.170     anton     571: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
1.172     anton     572: #This magic incantation  seems to be completely undocumented.
                    573: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
1.170     anton     574: 
1.1       anton     575: dnl Now a little support for DOS/DJGCC
1.30      pazsan    576: AC_SUBST(GFORTH_EXE)
1.172     anton     577: GFORTH_EXE=""
1.48      anton     578: AC_SUBST(GFORTHFAST_EXE)
1.172     anton     579: GFORTHFAST_EXE=""
1.83      anton     580: AC_SUBST(GFORTHITC_EXE)
                    581: GFORTHITC_EXE=""
1.30      pazsan    582: AC_SUBST(GFORTHDITC_EXE)
                    583: GFORTHDITC_EXE=""
1.27      anton     584: 
                    585: AC_SUBST(FORTHSIZES)
1.24      anton     586: 
1.104     anton     587: dnl if test "$PEEPHOLE" = "yes"
                    588: dnl then
                    589: dnl    PEEPHOLEFLAG="true"
                    590: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    591: dnl else
                    592: dnl    PEEPHOLEFLAG="false"
                    593: dnl fi
                    594: PEEPHOLEFLAG="true"
1.79      pazsan    595: AC_SUBST(PEEPHOLEFLAG)
                    596: 
1.1       anton     597: dnl copy commands for systems that don't have links
1.29      pazsan    598: AC_SUBST(LINK_KERNL)
                    599: LINK_KERNL=""
1.1       anton     600: 
                    601: #if test $host_os=dos
                    602: #then
                    603: #  echo Configuring for DOS!!!
                    604: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    605: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     606: #fi
                    607: 
                    608: dnl the following macro produces a warning with autoconf-2.1
                    609: AC_C_BIGENDIAN
1.23      pazsan    610: AC_SUBST(KERNEL)
1.1       anton     611: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    612: if test $ac_cv_c_bigendian = yes; then
                    613:   bytesex=b
1.23      pazsan    614:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     615: else
                    616:   bytesex=l
1.23      pazsan    617:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     618: fi
                    619: 
1.91      anton     620: #check how to do asm(".skip 16")
1.169     anton     621: #echo "CFLAGS=$CFLAGS"
                    622: #echo "ac_link=$ac_link"
1.92      anton     623: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     624: if test -z "$skipcode"; then
1.148     anton     625:     skipcode=no
                    626:     CFLAGS_1="$CFLAGS"
                    627:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     628:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    629:     do
1.91      anton     630:        AC_TRY_RUN(
1.136     anton     631: [int foo(int,int,int);
1.91      anton     632: main()
                    633: {
1.136     anton     634:   exit(foo(0,0,0)!=16);
1.91      anton     635: }
1.136     anton     636: int foo(int x, int y, int z)
1.91      anton     637: {
1.136     anton     638:   static void *labels[]={&&label1, &&label2};
1.91      anton     639:   if (x) {
1.136     anton     640:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     641:   label1:
1.148     anton     642:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     643:   label2: ;
                    644:   }
                    645:   {
                    646:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    647:   return labels[1]-labels[0];
1.91      anton     648:   }
1.136     anton     649: }]
1.92      anton     650:        ,skipcode=$i; break
                    651:        ,,)
1.136     anton     652:     done
1.148     anton     653:     CFLAGS=$CFLAGS_1
1.136     anton     654: fi
1.92      anton     655: AC_MSG_RESULT($skipcode)
                    656: if test "$skipcode" = no
                    657: then 
1.136     anton     658:     if test -z $no_dynamic_default; then
                    659:        no_dynamic_default=1
                    660:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    661:     fi
1.92      anton     662:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    663: else
                    664:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    665: fi
1.91      anton     666: 
1.174     anton     667: AC_MSG_CHECKING([if and how we can do comments in asm statements])
                    668: #the point here is to get asm statements that look different to
                    669: #gcc's "optimizer"
                    670: if test -z "$asmcomment"; then
                    671:     asmcomment=no
                    672:     CFLAGS_1="$CFLAGS"
                    673:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.176     anton     674:     for i in '"# "' '"! "' '"; "'; do
1.174     anton     675:        AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
                    676:     done
                    677:     CFLAGS=$CFLAGS_1
                    678: fi
                    679: AC_MSG_RESULT($asmcomment)
                    680: if test "$asmcomment" != no
                    681: then 
                    682:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
                    683: fi
                    684: 
1.136     anton     685: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     686: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     687: 
1.1       anton     688: dnl Checks for programs.
                    689: AC_PROG_LN_S
1.95      anton     690: AC_PROG_INSTALL
1.163     pazsan    691: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
1.1       anton     692: 
                    693: dnl Checks for library functions
1.2       anton     694: dnl This check is just for making later checks link with libm.
                    695: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    696: AC_CHECK_LIB(m,asin)
1.31      anton     697: AC_CHECK_LIB(dl,dlopen)
1.152     pazsan    698: dnl check for libffi 2.x
                    699: AC_CHECK_LIB(ffi,ffi_call)
                    700: if test $ac_cv_lib_ffi_ffi_call = yes
                    701: then
                    702: LIBFFIFLAG="true"
                    703: FFCALLFLAG="false"
                    704: OLDCALLFLAG="false"
                    705: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
                    706: else
1.124     pazsan    707: dnl check for ffcall libraries
                    708: dnl unfortunately, these four calls are separated out into a library each.
                    709: AC_CHECK_LIB(avcall,__builtin_avcall)
                    710: AC_CHECK_LIB(callback,__vacall_r)
                    711: AC_CHECK_LIB(vacall,vacall)
                    712: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.152     pazsan    713: LIBFFIFLAG="false"
1.125     anton     714: FFCALLFLAG="false"
1.129     pazsan    715: OLDCALLFLAG="true"
                    716: 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])
                    717: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.152     pazsan    718: fi
                    719: AC_SUBST(LIBFFIFLAG)
1.125     anton     720: AC_SUBST(FFCALLFLAG)
1.129     pazsan    721: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    722: if test "$host_os" != "nextstep3"
                    723: then
                    724:        AC_FUNC_MEMCMP
                    725: fi
1.25      pazsan    726: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     727: AC_FUNC_FSEEKO
                    728: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     729: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     730: AC_DECL_SYS_SIGLIST
1.138     anton     731: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     732: AC_CHECK_FUNCS(expm1 log1p)
                    733: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     734: dnl No check for select, because our replacement is no good under
                    735: dnl anything but DOS
1.62      anton     736: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     737: AC_FUNC_FNMATCH
1.87      pazsan    738: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     739: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     740: AM_PATH_LISPDIR
1.1       anton     741: 
1.23      pazsan    742: kernel_fi=kernl${wordsize}${bytesex}.fi
1.178     pazsan    743: include_fi=kernl${wordsize}${bytesex}${EC}.fi
1.23      pazsan    744: AC_SUBST(kernel_fi)
1.178     pazsan    745: AC_SUBST(include_fi)
1.50      jwilke    746: 
1.76      anton     747: #this breaks bindists
                    748: #dnl replace srource directory by absolute value
                    749: #if test $srcdir = "."; then srcdir=`pwd` 
                    750: #fi
1.8       anton     751: 
1.34      anton     752: AC_SUBST(machine)
1.95      anton     753: AC_CONFIG_FILES([
1.31      anton     754: Makefile
1.45      pazsan    755: Makedist
1.43      anton     756: gforthmi
1.80      anton     757: vmgen
1.79      pazsan    758: machpc.fs
1.159     pazsan    759: envos.fs
1.35      anton     760: engine/Makefile
1.161     pazsan    761: doc/version.texi
                    762: build-ec ])
1.95      anton     763: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     764: chmod +x gforthmi
1.80      anton     765: chmod +x vmgen
1.162     pazsan    766: chmod +x build-ec
1.95      anton     767: test -d kernel||mkdir kernel]],[[]])
                    768: AC_OUTPUT
1.44      anton     769: 

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