Annotation of gforth/configure.in, revision 1.181

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

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