Annotation of gforth/configure.in, revision 1.173

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

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