Annotation of gforth/configure.in, revision 1.177

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
1.160     pazsan      3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006 Free Software Foundation, Inc.
1.20      anton       4: 
                      5: #This file is part of Gforth.
                      6: 
                      7: #Gforth is free software; you can redistribute it and/or
                      8: #modify it under the terms of the GNU General Public License
                      9: #as published by the Free Software Foundation; either version 2
                     10: #of the License, or (at your option) any later version.
                     11: 
                     12: #This program is distributed in the hope that it will be useful,
                     13: #but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
                     15: #GNU General Public License for more details.
                     16: 
                     17: #You should have received a copy of the GNU General Public License
                     18: #along with this program; if not, write to the Free Software
1.74      anton      19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.20      anton      20: 
1.121     anton      21: 
1.34      anton      22: dnl We use some automake macros here,
                     23: dnl but don't use automake for creating Makefile.in
1.164     pazsan     24: AC_INIT([gforth],[0.6.2-20060527],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
1.113     anton      25: AC_PREREQ(2.54)
1.47      anton      26: #snapshots have numbers major.minor.release-YYYYMMDD
1.92      anton      27: #note that lexicographic ordering must be heeded.
1.47      anton      28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
1.160     pazsan     29: UPDATED="April 09, 2006"
1.84      anton      30: AC_SUBST(UPDATED)
1.94      anton      31: AC_CONFIG_HEADERS(engine/config.h)
1.14      anton      32: 
1.121     anton      33: #suppress the "-g -O2" default
                     34: test "$CFLAGS" || CFLAGS=-O2
                     35: 
1.1       anton      36: AC_ARG_ENABLE(force-reg,
1.149     anton      37:        AC_HELP_STRING([--enable-force-reg],
                     38:                        [ Use explicit register declarations if they appear in
1.1       anton      39:                          the machine.h file. This can cause a good speedup,
                     40:                          but also incorrect code with some gcc versions on
1.149     anton      41:                          some processors (default disabled).]),
                     42:        ,enable_force_reg=no)
                     43: test "$enable_force_reg" = "no"||
                     44:   AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)])
                     45: 
1.145     pazsan     46: AC_ARG_ENABLE(force-ll,
1.149     anton      47:        AC_HELP_STRING([--enable-force-ll],
                     48:                       [  Use explicit long long declarations if they appear in
1.145     pazsan     49:                          the machine.h file. This can cause a good speedup,
                     50:                          but also incorrect code with some gcc versions on
1.149     anton      51:                          some processors (default disabled).]),
                     52:        ,enable_force_ll=no)
                     53: test "$enable_force_ll" = "no"||
                     54:   AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
1.147     anton      55: 
1.150     pazsan     56: AC_ARG_ENABLE(force-cdiv,
                     57:        AC_HELP_STRING([--enable-force-cdiv],
                     58:                       [  Use the native C division - symmetric - instead of
                     59:                          floored division (default disabled).]),
                     60:        ,enable_force_cdiv=no)
                     61: test "$enable_force_cdiv" = "no"||
                     62:   AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
                     63: 
1.149     anton      64: AC_SUBST(PROFEXES)
                     65: AC_SUBST(PROFOBJS)
1.135     anton      66: AC_ARG_ENABLE(prof,
1.149     anton      67:        AC_HELP_STRING([--enable-prof],
                     68:                        [ Build gforth-prof, which outputs frequently occuring
                     69:                           sequences of primitives.]),
                     70:        ,enable_prof=no)
                     71: if test "$enable_prof" = "no"; then
                     72:   PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
                     73: fi
1.1       anton      74: 
1.9       pazsan     75: AC_ARG_WITH(debug,
1.122     pazsan     76: [  --with-debug                  specifies option -g to compile with debug info
                     77:   --without-debug        omits the -g switch and creates smaller images on
                     78:                          machines where "strip" has problems with gcc style
                     79:                          debugging informations.],
1.9       pazsan     80: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
1.122     pazsan     81: 
1.104     anton      82: dnl PEEPHOLE="yes"
                     83: dnl AC_ARG_WITH(peephole,
                     84: dnl [  --with-peephole Enable peephole optimization (default)
                     85: dnl   --without-peephole       disables peephole optimization. Creates smaller,
                     86: dnl                    but slower images.],
                     87: dnl PEEPHOLE="$withval")
                     88: 
1.167     pazsan     89: AC_ARG_ENABLE(ec,
                     90:        AC_HELP_STRING([--enable-ec],
1.168     pazsan     91:                        [  Build gforth for systems without OS.]),
1.167     pazsan     92:        ,enable_ec=no)
                     93: if test "$enable_ec" = "yes"; then
1.168     pazsan     94:   echo "defining standalone system"
                     95:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
1.167     pazsan     96:   EC_MODE="true"
                     97: else
1.168     pazsan     98:   echo "defining hosted system"
1.167     pazsan     99:   EC_MODE="false"
                    100: fi
                    101: 
1.104     anton     102: #variables mentioned in INSTALL
1.123     anton     103: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton     104: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
1.151     anton     105: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
1.173     anton     106: AC_ARG_VAR(GCC_PR15242_WORKAROUND, [Force the enabling (1) or disabling (0) of a workaround for a gcc-3.x performance bug (default unset: use workaround for gcc-3.x)])
                    107: 
1.104     anton     108: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
                    109: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                    110: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                    111: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                    112: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                    113: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                    114: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                    115: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan    116: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton     117: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                    118: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.166     anton     119: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
1.174     anton     120: AC_ARG_VAR(asmcomment, [assembler comment start string])
1.175     anton     121: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
1.82      anton     122: 
1.96      anton     123: #set up feature test macros, so the tests get them right:
                    124: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton     125: AC_GNU_SOURCE
                    126: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                    127: 
                    128: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                    129: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                    130: dnl but not for _XOPEN_SOURCE)
                    131: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                    132: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                    133: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton     134: # turn on large file support with 64-bit off_t where available
1.105     anton     135: AC_SYS_LARGEFILE
                    136: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                    137: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     138: 
1.82      anton     139: #currently we force direct threading this way.  Eventually we should
                    140: #setup in the arch and engine files right
1.16      anton     141: 
1.15      pazsan    142: AC_PROG_CC
                    143: 
1.92      anton     144: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    145: 
1.15      pazsan    146: AC_SUBST(CC)
1.9       pazsan    147: AC_SUBST(DEBUGFLAG)
1.167     pazsan    148: AC_SUBST(EC_MODE)
1.7       anton     149: 
1.174     anton     150: #this is used to disable some (not generally essential) part of the
                    151: #Makefile that some makes don't grok.  It would be better to test for
                    152: #this specific Makefile feature than the make version.
1.128     pazsan    153: AC_MSG_CHECKING(make type)
1.174     anton     154: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
1.128     pazsan    155: GNUMAKE='#'
                    156: test "$make_type" = "GNU Make" && GNUMAKE=''
                    157: AC_MSG_RESULT($make_type)
                    158: AC_SUBST(GNUMAKE)
                    159: 
1.50      jwilke    160: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    161: OLDLDFLAGS=$LDFLAGS
                    162: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     163: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    164: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    165: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    166: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    167: AC_MSG_RESULT($ac_export_dynamic)
                    168: 
1.1       anton     169: #terminology is a bit unusual here: The host is the system on which
                    170: #gforth will run; the system on which configure will run is the `build'
                    171: AC_CANONICAL_HOST
                    172: case "$host_cpu" in
1.136     anton     173:        arm*)
                    174:                machine=arm
                    175:                CFLAGS="$CFLAGS -fomit-frame-pointer"
1.175     anton     176:                if test -z $arm_cacheflush; then
1.136     anton     177:                    no_dynamic_default=1
1.175     anton     178:                     arm_cacheflush=arch/arm/cacheflush0
1.136     anton     179:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    180:                fi
1.175     anton     181:                 AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
                    182:                 AC_LIBOBJ(../$arm_cacheflush)
1.177   ! anton     183:                 #longer skipcodes lead to problems on ARM, and it uses
        !           184:                 #only 4-byte alignment anyway
        !           185:                test "$skipcode" || skipcode="nop"
1.136     anton     186:                ;;
1.1       anton     187:        hppa*)
1.34      anton     188:                machine=hppa
1.46      anton     189:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    190:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     191:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    192:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     193:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     194:                ;;
                    195:        sparc*)
1.34      anton     196:                machine=sparc
1.1       anton     197:                ;;
1.31      anton     198:        i386)
1.34      anton     199:                machine=386
1.16      anton     200:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     201:                ;;
                    202:        i486)
1.34      anton     203:                machine=386
1.31      anton     204:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    205:                ;;
1.77      anton     206:        i*86)
1.34      anton     207:                machine=386
1.55      anton     208:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    209:                CFLAGS_1="$CFLAGS"
1.87      pazsan    210:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    211:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     212:                ;;
1.133     anton     213:        x86_64)
                    214:                machine=amd64
                    215:                ;;
1.136     anton     216:        ia64*)
                    217:                machine=ia64
                    218:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    219:                test "$skipcode" || skipcode="nop.i 0"
                    220:                #".skip 16" passes the test below,
                    221:                # but gives an assembler error in engine
                    222:                ;;
1.26      pazsan    223:         m68k)
1.34      anton     224:                machine=m68k
1.32      pazsan    225:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    226:                if test "$host_os" = "nextstep3"
                    227:                then
1.87      pazsan    228:                        AC_LIBOBJ(termios)
1.32      pazsan    229:                fi
1.26      pazsan    230:                ;;
1.1       anton     231:        mips*)
1.34      anton     232:                machine=mips
1.92      anton     233:                #dynamic native code has the following problems on MIPS:
                    234:                #
                    235:                #1) J/JAL seems relocatable, but is are only
                    236:                #relocatable within a 256MB-segment.  While we try to
                    237:                #get the linker to arrange this, there is no guarantee
                    238:                #that this will succeed (and if the user uses a lot of
                    239:                #memory, it is likely to fail).
                    240:                #
                    241:                #2) The way we generate dynamic native code may
                    242:                #violate MIPS architectural restrictions (in
                    243:                #particular, the delay slots of LW, MFLO, etc.)
                    244:                #
                    245:                #Therefore we disable dynamic native code by default:
1.136     anton     246:                if test -z $no_dynamic_default; then
                    247:                    no_dynamic_default=1
                    248:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    249:                fi
1.1       anton     250:                ;;
1.9       pazsan    251:        alpha*)
1.34      anton     252:                machine=alpha
1.58      anton     253:                #full IEEE FP support for more uniformity across platforms:
                    254:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    255:                ;;
1.69      anton     256:        power*|rs6000)
1.34      anton     257:                machine=power
1.46      anton     258:                $srcdir/mkinstalldirs arch/power
1.138     anton     259:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     260:                #long long is broken on (at least) gcc-2.95.* for PPC
1.165     anton     261:                test x$ac_cv_sizeof_long_long = x && 
                    262:                ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
                    263:                ac_cv_sizeof_long_long=0
1.31      anton     264:                ;;
1.1       anton     265:        *)
1.92      anton     266:                AC_MSG_WARN([Using a generic machine description])
                    267:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    268:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     269:                machine=generic
1.97      anton     270:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     271:                if test -z $no_dynamic_default; then
                    272:                    no_dynamic_default=1
                    273:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    274:                fi
1.1       anton     275: esac
1.10      anton     276: AC_SUBST(host)
1.151     anton     277: 
                    278: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
                    279: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
                    280:                   [number of registers in the default stack cache state for gforth-fast and gforth-native])
1.146     pazsan    281: 
1.173     anton     282: test x$GCC_PR15242_WORKAROUND = x ||
                    283: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
                    284:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
                    285: 
                    286: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
                    287: dnl generation on gccs affected by PR15242])
                    288: 
                    289: 
1.146     pazsan    290: if test "${enable_force_ll+set}" = set; then
                    291:    ac_includes_default="$ac_includes_default
                    292: #include \"arch/generic/128bit.h\""
                    293: fi
1.103     anton     294: 
                    295: dnl the following macro produces a warning with autoconf-2.1
                    296: AC_CHECK_SIZEOF(char *)
                    297: case "$ac_cv_sizeof_char_p" in
                    298:   2)
                    299:     wordsize=16
                    300:     ;;
                    301:   4)
                    302:     wordsize=32
                    303:     ;;
                    304:   8)
                    305:     wordsize=64
                    306:     ;;
                    307: esac
                    308: 
                    309: AC_CHECK_SIZEOF(char)
                    310: AC_CHECK_SIZEOF(short)
                    311: AC_CHECK_SIZEOF(int)
                    312: AC_CHECK_SIZEOF(long)
                    313: AC_CHECK_SIZEOF(long long)
                    314: AC_CHECK_SIZEOF(intptr_t)
                    315: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    316: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     317: 
                    318: AC_MSG_CHECKING([for a C type for cells])
                    319: ac_cv_int_type_cell=none
                    320: case "$ac_cv_sizeof_char_p" in
                    321:   $ac_cv_sizeof_int)
                    322:     ac_cv_int_type_cell=int
                    323:     ;;
                    324:   $ac_cv_sizeof_short)
                    325:     ac_cv_int_type_cell=short
                    326:     ;;
                    327:   $ac_cv_sizeof_char)
                    328:     ac_cv_int_type_cell=char
                    329:     ;;
                    330:   $ac_cv_sizeof_long)
                    331:     ac_cv_int_type_cell=long
                    332:     ;;
                    333:   $ac_cv_sizeof_long_long)
                    334:     ac_cv_int_type_cell="long long"
                    335:     ;;
                    336:   $ac_cv_sizeof_intptr_t)
                    337:     ac_cv_int_type_cell="intptr_t"
                    338:     ;;
                    339:   $ac_cv_sizeof_int128_t)
                    340:     ac_cv_int_type_cell="int128_t"
                    341:     ;;
                    342: esac
                    343: AC_MSG_RESULT($ac_cv_int_type_cell)
                    344: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    345: 
1.153     pazsan    346: AC_MSG_CHECKING([for a C type for wydes])
                    347: ac_cv_wyde_type_cell=none
                    348: case 2 in
                    349:   $ac_cv_sizeof_int)
                    350:     ac_cv_wyde_type_cell=int
                    351:     ;;
                    352:   $ac_cv_sizeof_short)
                    353:     ac_cv_wyde_type_cell=short
                    354:     ;;
                    355:   $ac_cv_sizeof_char)
                    356:     ac_cv_wyde_type_cell=char
                    357:     ;;
                    358:   $ac_cv_sizeof_long)
                    359:     ac_cv_wyde_type_cell=long
                    360:     ;;
                    361:   $ac_cv_sizeof_long_long)
                    362:     ac_cv_wyde_type_cell="long long"
                    363:     ;;
                    364:   $ac_cv_sizeof_intptr_t)
                    365:     ac_cv_wyde_type_cell="intptr_t"
                    366:     ;;
                    367:   $ac_cv_sizeof_int128_t)
                    368:     ac_cv_wyde_type_cell="int128_t"
                    369:     ;;
                    370: esac
                    371: AC_MSG_RESULT($ac_cv_wyde_type_cell)
                    372: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
                    373: 
                    374: AC_MSG_CHECKING([for a C type for tetrabytes])
                    375: ac_cv_tetrabyte_type_cell=none
                    376: case 4 in
                    377:   $ac_cv_sizeof_int)
                    378:     ac_cv_tetrabyte_type_cell=int
                    379:     ;;
                    380:   $ac_cv_sizeof_short)
                    381:     ac_cv_tetrabyte_type_cell=short
                    382:     ;;
                    383:   $ac_cv_sizeof_char)
                    384:     ac_cv_tetrabyte_type_cell=char
                    385:     ;;
                    386:   $ac_cv_sizeof_long)
                    387:     ac_cv_tetrabyte_type_cell=long
                    388:     ;;
                    389:   $ac_cv_sizeof_long_long)
                    390:     ac_cv_tetrabyte_type_cell="long long"
                    391:     ;;
                    392:   $ac_cv_sizeof_intptr_t)
                    393:     ac_cv_tetrabyte_type_cell="intptr_t"
                    394:     ;;
                    395:   $ac_cv_sizeof_int128_t)
                    396:     ac_cv_tetrabyte_type_cell="int128_t"
                    397:     ;;
                    398: esac
                    399: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
                    400: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
                    401: 
1.103     anton     402: AC_MSG_CHECKING([for a C type for double-cells])
                    403: ac_cv_int_type_double_cell=none
                    404: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    405:   $ac_cv_sizeof_short)
                    406:     ac_cv_int_type_double_cell=short
                    407:     ;;
                    408:   $ac_cv_sizeof_int)
                    409:     ac_cv_int_type_double_cell=int
                    410:     ;;
                    411:   $ac_cv_sizeof_long)
                    412:     ac_cv_int_type_double_cell=long
                    413:     ;;
                    414:   $ac_cv_sizeof_long_long)
                    415:     ac_cv_int_type_double_cell="long long"
                    416:     ;;
                    417:   $ac_cv_sizeof_intptr_t)
                    418:     ac_cv_int_type_double_cell="intptr_t"
                    419:     ;;
                    420:   $ac_cv_sizeof_int128_t)
                    421:     ac_cv_int_type_double_cell="int128_t"
                    422:     ;;
                    423: esac
                    424: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    425: 
                    426: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    427: ac_cv_int_type_double_ucell=none
                    428: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    429:   $ac_cv_sizeof_short)
                    430:     ac_cv_int_type_double_ucell="unsigned short"
                    431:     ;;
                    432:   $ac_cv_sizeof_int)
                    433:     ac_cv_int_type_double_ucell="unsigned int"
                    434:     ;;
                    435:   $ac_cv_sizeof_long)
                    436:     ac_cv_int_type_double_ucell="unsigned long"
                    437:     ;;
                    438:   $ac_cv_sizeof_long_long)
                    439:     ac_cv_int_type_double_ucell="unsigned long long"
                    440:     ;;
                    441:   $ac_cv_sizeof_intptr_t)
                    442:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    443:     ;;
                    444:   $ac_cv_sizeof_uint128_t)
                    445:     ac_cv_int_type_double_ucell="uint128_t"
                    446:     ;;
                    447: esac
                    448: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    449: 
                    450: if test "$ac_cv_int_type_double_cell" = none || \
                    451:    test "$ac_cv_int_type_double_ucell" = none
                    452: then
1.103     anton     453:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    454:        AC_LIBOBJ(dblsub)
                    455:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    456: else
                    457:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    458:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     459: fi
                    460: 
                    461: AC_TYPE_OFF_T
                    462: AC_CHECK_SIZEOF(off_t)
                    463: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    464: ac_small_off_t=$?
                    465: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     466: 
1.109     anton     467: ENGINE_FLAGS=
                    468: AC_SUBST(ENGINE_FLAGS)
                    469: 
                    470: # Try if GCC understands -fno-gcse
                    471: 
                    472: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    473: CFLAGS_1="$CFLAGS"
                    474: CFLAGS="$CFLAGS -fno-gcse"
                    475: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    476: CFLAGS="$CFLAGS_1"
                    477: AC_MSG_RESULT($ac_nogcse)
                    478: 
                    479: # Try if GCC understands -fno-strict-aliasing
                    480: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    481: CFLAGS_1="$CFLAGS"
                    482: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    483: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    484: CFLAGS="$CFLAGS_1"
                    485: AC_MSG_RESULT($ac_nostrictaliasing)
                    486: 
1.123     anton     487: # Try if GCC understands -fno-crossjumping
                    488: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    489: CFLAGS_1="$CFLAGS"
1.123     anton     490: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     491: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     492: CFLAGS="$CFLAGS_1"
1.124     pazsan    493: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    494: 
1.137     pazsan    495: # Try if GCC understands -fno-reorder-blocks
                    496: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    497: CFLAGS_1="$CFLAGS"
                    498: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    499: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    500: CFLAGS="$CFLAGS_1"
                    501: AC_MSG_RESULT($ac_noreorder_blocks)
                    502: 
1.130     anton     503: # Try if GCC understands __attribute__((unused))
                    504: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    505: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    506: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    507: AC_MSG_RESULT($MAYBE_UNUSED)
                    508: 
1.66      anton     509: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     510: AC_SUBST(asm_fs)
                    511: 
1.66      anton     512: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     513: AC_SUBST(disasm_fs)
                    514: 
1.116     anton     515: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     516: 
1.39      pazsan    517: case "$host_os" in
1.157     pazsan    518:        *win32*)
                    519:                # !!!FIXME!!! problems with cygwin and ';' as path separator
1.108     anton     520:                DIRSEP="\\\\"
1.127     anton     521:                PATHSEP=";"
1.142     anton     522:                #we want the builtins of command.com/cmd.exe and its
                    523:                # handling of .com files.
                    524:                #$COMSPEC contains the name of the Windows shell;
                    525:                # the ./ is there, because the bash does not recognize
                    526:                # absolute DOS filenames
                    527:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    528:                ;;
1.97      anton     529:        *darwin*)
                    530:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     531:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     532:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     533:                DIRSEP="/"
1.127     anton     534:                PATHSEP=":"
1.141     anton     535:                DEFAULTSYSTEMPREFIX=""
1.98      anton     536:                ;;
1.39      pazsan    537:        *)
1.88      pazsan    538:                DIRSEP="/"
1.127     anton     539:                PATHSEP=":"
1.141     anton     540:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    541:                ;;
                    542: esac
1.88      pazsan    543: AC_SUBST(DIRSEP)
1.89      pazsan    544: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     545: AC_SUBST(PATHSEP)
                    546: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     547: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    548: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    549: 
1.170     anton     550: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
1.172     anton     551: #This magic incantation  seems to be completely undocumented.
                    552: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
1.170     anton     553: 
1.1       anton     554: dnl Now a little support for DOS/DJGCC
1.30      pazsan    555: AC_SUBST(GFORTH_EXE)
1.172     anton     556: GFORTH_EXE=""
1.48      anton     557: AC_SUBST(GFORTHFAST_EXE)
1.172     anton     558: GFORTHFAST_EXE=""
1.83      anton     559: AC_SUBST(GFORTHITC_EXE)
                    560: GFORTHITC_EXE=""
1.30      pazsan    561: AC_SUBST(GFORTHDITC_EXE)
                    562: GFORTHDITC_EXE=""
1.27      anton     563: 
                    564: AC_SUBST(FORTHSIZES)
1.24      anton     565: 
1.104     anton     566: dnl if test "$PEEPHOLE" = "yes"
                    567: dnl then
                    568: dnl    PEEPHOLEFLAG="true"
                    569: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    570: dnl else
                    571: dnl    PEEPHOLEFLAG="false"
                    572: dnl fi
                    573: PEEPHOLEFLAG="true"
1.79      pazsan    574: AC_SUBST(PEEPHOLEFLAG)
                    575: 
1.1       anton     576: dnl copy commands for systems that don't have links
1.29      pazsan    577: AC_SUBST(LINK_KERNL)
                    578: LINK_KERNL=""
1.1       anton     579: 
                    580: #if test $host_os=dos
                    581: #then
                    582: #  echo Configuring for DOS!!!
                    583: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    584: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     585: #fi
                    586: 
                    587: dnl the following macro produces a warning with autoconf-2.1
                    588: AC_C_BIGENDIAN
1.23      pazsan    589: AC_SUBST(KERNEL)
1.1       anton     590: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    591: if test $ac_cv_c_bigendian = yes; then
                    592:   bytesex=b
1.23      pazsan    593:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     594: else
                    595:   bytesex=l
1.23      pazsan    596:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     597: fi
                    598: 
1.91      anton     599: #check how to do asm(".skip 16")
1.169     anton     600: #echo "CFLAGS=$CFLAGS"
                    601: #echo "ac_link=$ac_link"
1.92      anton     602: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     603: if test -z "$skipcode"; then
1.148     anton     604:     skipcode=no
                    605:     CFLAGS_1="$CFLAGS"
                    606:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     607:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    608:     do
1.91      anton     609:        AC_TRY_RUN(
1.136     anton     610: [int foo(int,int,int);
1.91      anton     611: main()
                    612: {
1.136     anton     613:   exit(foo(0,0,0)!=16);
1.91      anton     614: }
1.136     anton     615: int foo(int x, int y, int z)
1.91      anton     616: {
1.136     anton     617:   static void *labels[]={&&label1, &&label2};
1.91      anton     618:   if (x) {
1.136     anton     619:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     620:   label1:
1.148     anton     621:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     622:   label2: ;
                    623:   }
                    624:   {
                    625:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    626:   return labels[1]-labels[0];
1.91      anton     627:   }
1.136     anton     628: }]
1.92      anton     629:        ,skipcode=$i; break
                    630:        ,,)
1.136     anton     631:     done
1.148     anton     632:     CFLAGS=$CFLAGS_1
1.136     anton     633: fi
1.92      anton     634: AC_MSG_RESULT($skipcode)
                    635: if test "$skipcode" = no
                    636: then 
1.136     anton     637:     if test -z $no_dynamic_default; then
                    638:        no_dynamic_default=1
                    639:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    640:     fi
1.92      anton     641:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    642: else
                    643:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    644: fi
1.91      anton     645: 
1.174     anton     646: AC_MSG_CHECKING([if and how we can do comments in asm statements])
                    647: #the point here is to get asm statements that look different to
                    648: #gcc's "optimizer"
                    649: if test -z "$asmcomment"; then
                    650:     asmcomment=no
                    651:     CFLAGS_1="$CFLAGS"
                    652:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.176     anton     653:     for i in '"# "' '"! "' '"; "'; do
1.174     anton     654:        AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
                    655:     done
                    656:     CFLAGS=$CFLAGS_1
                    657: fi
                    658: AC_MSG_RESULT($asmcomment)
                    659: if test "$asmcomment" != no
                    660: then 
                    661:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
                    662: fi
                    663: 
1.136     anton     664: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     665: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     666: 
1.1       anton     667: dnl Checks for programs.
                    668: AC_PROG_LN_S
1.95      anton     669: AC_PROG_INSTALL
1.163     pazsan    670: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
1.1       anton     671: 
                    672: dnl Checks for library functions
1.2       anton     673: dnl This check is just for making later checks link with libm.
                    674: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    675: AC_CHECK_LIB(m,asin)
1.31      anton     676: AC_CHECK_LIB(dl,dlopen)
1.152     pazsan    677: dnl check for libffi 2.x
                    678: AC_CHECK_LIB(ffi,ffi_call)
                    679: if test $ac_cv_lib_ffi_ffi_call = yes
                    680: then
                    681: LIBFFIFLAG="true"
                    682: FFCALLFLAG="false"
                    683: OLDCALLFLAG="false"
                    684: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
                    685: else
1.124     pazsan    686: dnl check for ffcall libraries
                    687: dnl unfortunately, these four calls are separated out into a library each.
                    688: AC_CHECK_LIB(avcall,__builtin_avcall)
                    689: AC_CHECK_LIB(callback,__vacall_r)
                    690: AC_CHECK_LIB(vacall,vacall)
                    691: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.152     pazsan    692: LIBFFIFLAG="false"
1.125     anton     693: FFCALLFLAG="false"
1.129     pazsan    694: OLDCALLFLAG="true"
                    695: 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])
                    696: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.152     pazsan    697: fi
                    698: AC_SUBST(LIBFFIFLAG)
1.125     anton     699: AC_SUBST(FFCALLFLAG)
1.129     pazsan    700: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    701: if test "$host_os" != "nextstep3"
                    702: then
                    703:        AC_FUNC_MEMCMP
                    704: fi
1.25      pazsan    705: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     706: AC_FUNC_FSEEKO
                    707: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     708: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     709: AC_DECL_SYS_SIGLIST
1.138     anton     710: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     711: AC_CHECK_FUNCS(expm1 log1p)
                    712: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     713: dnl No check for select, because our replacement is no good under
                    714: dnl anything but DOS
1.62      anton     715: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     716: AC_FUNC_FNMATCH
1.87      pazsan    717: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     718: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     719: AM_PATH_LISPDIR
1.1       anton     720: 
1.23      pazsan    721: kernel_fi=kernl${wordsize}${bytesex}.fi
                    722: AC_SUBST(kernel_fi)
1.50      jwilke    723: 
1.76      anton     724: #this breaks bindists
                    725: #dnl replace srource directory by absolute value
                    726: #if test $srcdir = "."; then srcdir=`pwd` 
                    727: #fi
1.8       anton     728: 
1.34      anton     729: AC_SUBST(machine)
1.95      anton     730: AC_CONFIG_FILES([
1.31      anton     731: Makefile
1.45      pazsan    732: Makedist
1.43      anton     733: gforthmi
1.80      anton     734: vmgen
1.79      pazsan    735: machpc.fs
1.159     pazsan    736: envos.fs
1.35      anton     737: engine/Makefile
1.161     pazsan    738: doc/version.texi
                    739: build-ec ])
1.95      anton     740: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     741: chmod +x gforthmi
1.80      anton     742: chmod +x vmgen
1.162     pazsan    743: chmod +x build-ec
1.95      anton     744: test -d kernel||mkdir kernel]],[[]])
                    745: AC_OUTPUT
1.44      anton     746: 

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