Annotation of gforth/configure.in, revision 1.166

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 "$enable_force_ll" = "no"||
                     54:   AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
1.147     anton      55: 
                     56: AC_ARG_ENABLE(gcc-pr15242-workaround,
                     57:               AC_HELP_STRING([--disable-gcc-pr15242-workaround],[Disables
                     58:                              dynamic code generation on some versions of gcc
                     59:                              (slowdown~2 on Athlon) and causes slower building
                     60:                              of gforth (but gforth speedups) on others.
                     61:                              (default enabled)]),
                     62:                ,enable_gcc_pr15242_workaround=yes)
                     63: test "$enable_gcc_pr15242_workaround" = "no"||
                     64: AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
                     65: generation on gccs affected by PR15242])
                     66: 
1.150     pazsan     67: AC_ARG_ENABLE(force-cdiv,
                     68:        AC_HELP_STRING([--enable-force-cdiv],
                     69:                       [  Use the native C division - symmetric - instead of
                     70:                          floored division (default disabled).]),
                     71:        ,enable_force_cdiv=no)
                     72: test "$enable_force_cdiv" = "no"||
                     73:   AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
                     74: 
1.149     anton      75: AC_SUBST(PROFEXES)
                     76: AC_SUBST(PROFOBJS)
1.135     anton      77: AC_ARG_ENABLE(prof,
1.149     anton      78:        AC_HELP_STRING([--enable-prof],
                     79:                        [ Build gforth-prof, which outputs frequently occuring
                     80:                           sequences of primitives.]),
                     81:        ,enable_prof=no)
                     82: if test "$enable_prof" = "no"; then
                     83:   PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
                     84: fi
1.1       anton      85: 
1.9       pazsan     86: AC_ARG_WITH(debug,
1.122     pazsan     87: [  --with-debug                  specifies option -g to compile with debug info
                     88:   --without-debug        omits the -g switch and creates smaller images on
                     89:                          machines where "strip" has problems with gcc style
                     90:                          debugging informations.],
1.9       pazsan     91: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
1.122     pazsan     92: 
1.104     anton      93: dnl PEEPHOLE="yes"
                     94: dnl AC_ARG_WITH(peephole,
                     95: dnl [  --with-peephole Enable peephole optimization (default)
                     96: dnl   --without-peephole       disables peephole optimization. Creates smaller,
                     97: dnl                    but slower images.],
                     98: dnl PEEPHOLE="$withval")
                     99: 
                    100: #variables mentioned in INSTALL
1.123     anton     101: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
1.104     anton     102: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
1.151     anton     103: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
1.104     anton     104: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
                    105: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
                    106: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
                    107: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
                    108: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
                    109: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
                    110: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
                    111: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
1.144     pazsan    112: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
1.123     anton     113: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
                    114: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
1.166   ! anton     115: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
1.82      anton     116: 
1.96      anton     117: #set up feature test macros, so the tests get them right:
                    118: # turn on all POSIX, SUSv3, and GNU features if available
1.97      anton     119: AC_GNU_SOURCE
                    120: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
                    121: 
                    122: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
                    123: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
                    124: dnl but not for _XOPEN_SOURCE)
                    125: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
                    126: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
                    127: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
1.96      anton     128: # turn on large file support with 64-bit off_t where available
1.105     anton     129: AC_SYS_LARGEFILE
                    130: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
                    131: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
1.96      anton     132: 
1.82      anton     133: #currently we force direct threading this way.  Eventually we should
                    134: #setup in the arch and engine files right
1.16      anton     135: 
1.15      pazsan    136: AC_PROG_CC
                    137: 
1.92      anton     138: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    139: 
1.15      pazsan    140: AC_SUBST(CC)
1.9       pazsan    141: AC_SUBST(DEBUGFLAG)
1.7       anton     142: 
1.128     pazsan    143: AC_MSG_CHECKING(make type)
1.155     pazsan    144: make_type=`make -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
1.128     pazsan    145: 
                    146: GNUMAKE='#'
                    147: test "$make_type" = "GNU Make" && GNUMAKE=''
                    148: 
                    149: AC_MSG_RESULT($make_type)
                    150: 
                    151: AC_SUBST(GNUMAKE)
                    152: 
1.50      jwilke    153: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    154: OLDLDFLAGS=$LDFLAGS
                    155: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     156: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    157: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    158: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    159: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    160: AC_MSG_RESULT($ac_export_dynamic)
                    161: 
1.1       anton     162: #terminology is a bit unusual here: The host is the system on which
                    163: #gforth will run; the system on which configure will run is the `build'
                    164: AC_CANONICAL_HOST
                    165: case "$host_cpu" in
1.136     anton     166:        arm*)
                    167:                machine=arm
                    168:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    169:                if test -z $no_dynamic_default; then
                    170:                    no_dynamic_default=1
                    171:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    172:                fi
                    173:                ;;
1.1       anton     174:        hppa*)
1.34      anton     175:                machine=hppa
1.46      anton     176:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    177:                AC_LIBOBJ(../arch/hppa/cache)
1.134     anton     178:                #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                    179:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     180:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     181:                ;;
                    182:        sparc*)
1.34      anton     183:                machine=sparc
1.1       anton     184:                ;;
1.31      anton     185:        i386)
1.34      anton     186:                machine=386
1.16      anton     187:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     188:                ;;
                    189:        i486)
1.34      anton     190:                machine=386
1.31      anton     191:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    192:                ;;
1.77      anton     193:        i*86)
1.34      anton     194:                machine=386
1.55      anton     195:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    196:                CFLAGS_1="$CFLAGS"
1.87      pazsan    197:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    198:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     199:                ;;
1.133     anton     200:        x86_64)
                    201:                machine=amd64
                    202:                ;;
1.136     anton     203:        ia64*)
                    204:                machine=ia64
                    205:                AC_LIBOBJ(../arch/ia64/flush_icache_block)
                    206:                test "$skipcode" || skipcode="nop.i 0"
                    207:                #".skip 16" passes the test below,
                    208:                # but gives an assembler error in engine
                    209:                ;;
1.26      pazsan    210:         m68k)
1.34      anton     211:                machine=m68k
1.32      pazsan    212:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    213:                if test "$host_os" = "nextstep3"
                    214:                then
1.87      pazsan    215:                        AC_LIBOBJ(termios)
1.32      pazsan    216:                fi
1.26      pazsan    217:                ;;
1.1       anton     218:        mips*)
1.34      anton     219:                machine=mips
1.92      anton     220:                #dynamic native code has the following problems on MIPS:
                    221:                #
                    222:                #1) J/JAL seems relocatable, but is are only
                    223:                #relocatable within a 256MB-segment.  While we try to
                    224:                #get the linker to arrange this, there is no guarantee
                    225:                #that this will succeed (and if the user uses a lot of
                    226:                #memory, it is likely to fail).
                    227:                #
                    228:                #2) The way we generate dynamic native code may
                    229:                #violate MIPS architectural restrictions (in
                    230:                #particular, the delay slots of LW, MFLO, etc.)
                    231:                #
                    232:                #Therefore we disable dynamic native code by default:
1.136     anton     233:                if test -z $no_dynamic_default; then
                    234:                    no_dynamic_default=1
                    235:                    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                    236:                fi
1.1       anton     237:                ;;
1.9       pazsan    238:        alpha*)
1.34      anton     239:                machine=alpha
1.58      anton     240:                #full IEEE FP support for more uniformity across platforms:
                    241:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    242:                ;;
1.69      anton     243:        power*|rs6000)
1.34      anton     244:                machine=power
1.46      anton     245:                $srcdir/mkinstalldirs arch/power
1.138     anton     246:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     247:                #long long is broken on (at least) gcc-2.95.* for PPC
1.165     anton     248:                test x$ac_cv_sizeof_long_long = x && 
                    249:                ($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
                    250:                ac_cv_sizeof_long_long=0
1.31      anton     251:                ;;
1.1       anton     252:        *)
1.92      anton     253:                AC_MSG_WARN([Using a generic machine description])
                    254:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    255:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     256:                machine=generic
1.97      anton     257:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     258:                if test -z $no_dynamic_default; then
                    259:                    no_dynamic_default=1
                    260:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    261:                fi
1.1       anton     262: esac
1.10      anton     263: AC_SUBST(host)
1.151     anton     264: 
                    265: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
                    266: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
                    267:                   [number of registers in the default stack cache state for gforth-fast and gforth-native])
1.146     pazsan    268: 
                    269: if test "${enable_force_ll+set}" = set; then
                    270:    ac_includes_default="$ac_includes_default
                    271: #include \"arch/generic/128bit.h\""
                    272: fi
1.103     anton     273: 
                    274: dnl the following macro produces a warning with autoconf-2.1
                    275: AC_CHECK_SIZEOF(char *)
                    276: case "$ac_cv_sizeof_char_p" in
                    277:   2)
                    278:     wordsize=16
                    279:     ;;
                    280:   4)
                    281:     wordsize=32
                    282:     ;;
                    283:   8)
                    284:     wordsize=64
                    285:     ;;
                    286: esac
                    287: 
                    288: AC_CHECK_SIZEOF(char)
                    289: AC_CHECK_SIZEOF(short)
                    290: AC_CHECK_SIZEOF(int)
                    291: AC_CHECK_SIZEOF(long)
                    292: AC_CHECK_SIZEOF(long long)
                    293: AC_CHECK_SIZEOF(intptr_t)
                    294: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    295: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     296: 
                    297: AC_MSG_CHECKING([for a C type for cells])
                    298: ac_cv_int_type_cell=none
                    299: case "$ac_cv_sizeof_char_p" in
                    300:   $ac_cv_sizeof_int)
                    301:     ac_cv_int_type_cell=int
                    302:     ;;
                    303:   $ac_cv_sizeof_short)
                    304:     ac_cv_int_type_cell=short
                    305:     ;;
                    306:   $ac_cv_sizeof_char)
                    307:     ac_cv_int_type_cell=char
                    308:     ;;
                    309:   $ac_cv_sizeof_long)
                    310:     ac_cv_int_type_cell=long
                    311:     ;;
                    312:   $ac_cv_sizeof_long_long)
                    313:     ac_cv_int_type_cell="long long"
                    314:     ;;
                    315:   $ac_cv_sizeof_intptr_t)
                    316:     ac_cv_int_type_cell="intptr_t"
                    317:     ;;
                    318:   $ac_cv_sizeof_int128_t)
                    319:     ac_cv_int_type_cell="int128_t"
                    320:     ;;
                    321: esac
                    322: AC_MSG_RESULT($ac_cv_int_type_cell)
                    323: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    324: 
1.153     pazsan    325: AC_MSG_CHECKING([for a C type for wydes])
                    326: ac_cv_wyde_type_cell=none
                    327: case 2 in
                    328:   $ac_cv_sizeof_int)
                    329:     ac_cv_wyde_type_cell=int
                    330:     ;;
                    331:   $ac_cv_sizeof_short)
                    332:     ac_cv_wyde_type_cell=short
                    333:     ;;
                    334:   $ac_cv_sizeof_char)
                    335:     ac_cv_wyde_type_cell=char
                    336:     ;;
                    337:   $ac_cv_sizeof_long)
                    338:     ac_cv_wyde_type_cell=long
                    339:     ;;
                    340:   $ac_cv_sizeof_long_long)
                    341:     ac_cv_wyde_type_cell="long long"
                    342:     ;;
                    343:   $ac_cv_sizeof_intptr_t)
                    344:     ac_cv_wyde_type_cell="intptr_t"
                    345:     ;;
                    346:   $ac_cv_sizeof_int128_t)
                    347:     ac_cv_wyde_type_cell="int128_t"
                    348:     ;;
                    349: esac
                    350: AC_MSG_RESULT($ac_cv_wyde_type_cell)
                    351: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
                    352: 
                    353: AC_MSG_CHECKING([for a C type for tetrabytes])
                    354: ac_cv_tetrabyte_type_cell=none
                    355: case 4 in
                    356:   $ac_cv_sizeof_int)
                    357:     ac_cv_tetrabyte_type_cell=int
                    358:     ;;
                    359:   $ac_cv_sizeof_short)
                    360:     ac_cv_tetrabyte_type_cell=short
                    361:     ;;
                    362:   $ac_cv_sizeof_char)
                    363:     ac_cv_tetrabyte_type_cell=char
                    364:     ;;
                    365:   $ac_cv_sizeof_long)
                    366:     ac_cv_tetrabyte_type_cell=long
                    367:     ;;
                    368:   $ac_cv_sizeof_long_long)
                    369:     ac_cv_tetrabyte_type_cell="long long"
                    370:     ;;
                    371:   $ac_cv_sizeof_intptr_t)
                    372:     ac_cv_tetrabyte_type_cell="intptr_t"
                    373:     ;;
                    374:   $ac_cv_sizeof_int128_t)
                    375:     ac_cv_tetrabyte_type_cell="int128_t"
                    376:     ;;
                    377: esac
                    378: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
                    379: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
                    380: 
1.103     anton     381: AC_MSG_CHECKING([for a C type for double-cells])
                    382: ac_cv_int_type_double_cell=none
                    383: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    384:   $ac_cv_sizeof_short)
                    385:     ac_cv_int_type_double_cell=short
                    386:     ;;
                    387:   $ac_cv_sizeof_int)
                    388:     ac_cv_int_type_double_cell=int
                    389:     ;;
                    390:   $ac_cv_sizeof_long)
                    391:     ac_cv_int_type_double_cell=long
                    392:     ;;
                    393:   $ac_cv_sizeof_long_long)
                    394:     ac_cv_int_type_double_cell="long long"
                    395:     ;;
                    396:   $ac_cv_sizeof_intptr_t)
                    397:     ac_cv_int_type_double_cell="intptr_t"
                    398:     ;;
                    399:   $ac_cv_sizeof_int128_t)
                    400:     ac_cv_int_type_double_cell="int128_t"
                    401:     ;;
                    402: esac
                    403: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    404: 
                    405: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    406: ac_cv_int_type_double_ucell=none
                    407: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    408:   $ac_cv_sizeof_short)
                    409:     ac_cv_int_type_double_ucell="unsigned short"
                    410:     ;;
                    411:   $ac_cv_sizeof_int)
                    412:     ac_cv_int_type_double_ucell="unsigned int"
                    413:     ;;
                    414:   $ac_cv_sizeof_long)
                    415:     ac_cv_int_type_double_ucell="unsigned long"
                    416:     ;;
                    417:   $ac_cv_sizeof_long_long)
                    418:     ac_cv_int_type_double_ucell="unsigned long long"
                    419:     ;;
                    420:   $ac_cv_sizeof_intptr_t)
                    421:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    422:     ;;
                    423:   $ac_cv_sizeof_uint128_t)
                    424:     ac_cv_int_type_double_ucell="uint128_t"
                    425:     ;;
                    426: esac
                    427: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    428: 
                    429: if test "$ac_cv_int_type_double_cell" = none || \
                    430:    test "$ac_cv_int_type_double_ucell" = none
                    431: then
1.103     anton     432:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    433:        AC_LIBOBJ(dblsub)
                    434:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    435: else
                    436:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    437:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     438: fi
                    439: 
                    440: AC_TYPE_OFF_T
                    441: AC_CHECK_SIZEOF(off_t)
                    442: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    443: ac_small_off_t=$?
                    444: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     445: 
1.109     anton     446: ENGINE_FLAGS=
                    447: AC_SUBST(ENGINE_FLAGS)
                    448: 
                    449: # Try if GCC understands -fno-gcse
                    450: 
                    451: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    452: CFLAGS_1="$CFLAGS"
                    453: CFLAGS="$CFLAGS -fno-gcse"
                    454: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    455: CFLAGS="$CFLAGS_1"
                    456: AC_MSG_RESULT($ac_nogcse)
                    457: 
                    458: # Try if GCC understands -fno-strict-aliasing
                    459: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    460: CFLAGS_1="$CFLAGS"
                    461: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    462: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    463: CFLAGS="$CFLAGS_1"
                    464: AC_MSG_RESULT($ac_nostrictaliasing)
                    465: 
1.123     anton     466: # Try if GCC understands -fno-crossjumping
                    467: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    468: CFLAGS_1="$CFLAGS"
1.123     anton     469: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     470: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     471: CFLAGS="$CFLAGS_1"
1.124     pazsan    472: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    473: 
1.137     pazsan    474: # Try if GCC understands -fno-reorder-blocks
                    475: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    476: CFLAGS_1="$CFLAGS"
                    477: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    478: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    479: CFLAGS="$CFLAGS_1"
                    480: AC_MSG_RESULT($ac_noreorder_blocks)
                    481: 
1.130     anton     482: # Try if GCC understands __attribute__((unused))
                    483: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    484: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    485: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    486: AC_MSG_RESULT($MAYBE_UNUSED)
                    487: 
1.66      anton     488: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     489: AC_SUBST(asm_fs)
                    490: 
1.66      anton     491: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     492: AC_SUBST(disasm_fs)
                    493: 
1.116     anton     494: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     495: 
1.39      pazsan    496: case "$host_os" in
1.157     pazsan    497:        *win32*)
                    498:                # !!!FIXME!!! problems with cygwin and ';' as path separator
1.108     anton     499:                DIRSEP="\\\\"
1.127     anton     500:                PATHSEP=";"
1.142     anton     501:                #we want the builtins of command.com/cmd.exe and its
                    502:                # handling of .com files.
                    503:                #$COMSPEC contains the name of the Windows shell;
                    504:                # the ./ is there, because the bash does not recognize
                    505:                # absolute DOS filenames
                    506:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    507:                ;;
1.97      anton     508:        *darwin*)
                    509:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     510:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     511:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     512:                DIRSEP="/"
1.127     anton     513:                PATHSEP=":"
1.141     anton     514:                DEFAULTSYSTEMPREFIX=""
1.98      anton     515:                ;;
1.39      pazsan    516:        *)
1.88      pazsan    517:                DIRSEP="/"
1.127     anton     518:                PATHSEP=":"
1.141     anton     519:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    520:                ;;
                    521: esac
1.88      pazsan    522: AC_SUBST(DIRSEP)
1.89      pazsan    523: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     524: AC_SUBST(PATHSEP)
                    525: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     526: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    527: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    528: 
1.1       anton     529: dnl Now a little support for DOS/DJGCC
1.30      pazsan    530: AC_SUBST(GFORTH_EXE)
                    531: GFORTH_EXE=""
1.48      anton     532: AC_SUBST(GFORTHFAST_EXE)
                    533: GFORTHFAST_EXE=""
1.83      anton     534: AC_SUBST(GFORTHITC_EXE)
                    535: GFORTHITC_EXE=""
1.30      pazsan    536: AC_SUBST(GFORTHDITC_EXE)
                    537: GFORTHDITC_EXE=""
1.27      anton     538: 
                    539: AC_SUBST(FORTHSIZES)
1.24      anton     540: 
1.104     anton     541: dnl if test "$PEEPHOLE" = "yes"
                    542: dnl then
                    543: dnl    PEEPHOLEFLAG="true"
                    544: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    545: dnl else
                    546: dnl    PEEPHOLEFLAG="false"
                    547: dnl fi
                    548: PEEPHOLEFLAG="true"
1.79      pazsan    549: AC_SUBST(PEEPHOLEFLAG)
                    550: 
1.1       anton     551: dnl copy commands for systems that don't have links
1.29      pazsan    552: AC_SUBST(LINK_KERNL)
                    553: LINK_KERNL=""
1.1       anton     554: 
                    555: #if test $host_os=dos
                    556: #then
                    557: #  echo Configuring for DOS!!!
                    558: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    559: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     560: #fi
                    561: 
                    562: dnl the following macro produces a warning with autoconf-2.1
                    563: AC_C_BIGENDIAN
1.23      pazsan    564: AC_SUBST(KERNEL)
1.1       anton     565: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    566: if test $ac_cv_c_bigendian = yes; then
                    567:   bytesex=b
1.23      pazsan    568:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     569: else
                    570:   bytesex=l
1.23      pazsan    571:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     572: fi
                    573: 
1.91      anton     574: #check how to do asm(".skip 16")
1.148     anton     575: echo "CFLAGS=$CFLAGS"
                    576: echo "ac_link=$ac_link"
1.92      anton     577: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     578: if test -z "$skipcode"; then
1.148     anton     579:     skipcode=no
                    580:     CFLAGS_1="$CFLAGS"
                    581:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     582:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    583:     do
1.91      anton     584:        AC_TRY_RUN(
1.136     anton     585: [int foo(int,int,int);
1.91      anton     586: main()
                    587: {
1.136     anton     588:   exit(foo(0,0,0)!=16);
1.91      anton     589: }
1.136     anton     590: int foo(int x, int y, int z)
1.91      anton     591: {
1.136     anton     592:   static void *labels[]={&&label1, &&label2};
1.91      anton     593:   if (x) {
1.136     anton     594:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     595:   label1:
1.148     anton     596:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     597:   label2: ;
                    598:   }
                    599:   {
                    600:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    601:   return labels[1]-labels[0];
1.91      anton     602:   }
1.136     anton     603: }]
1.92      anton     604:        ,skipcode=$i; break
                    605:        ,,)
1.136     anton     606:     done
1.148     anton     607:     CFLAGS=$CFLAGS_1
1.136     anton     608: fi
1.92      anton     609: AC_MSG_RESULT($skipcode)
                    610: if test "$skipcode" = no
                    611: then 
1.136     anton     612:     if test -z $no_dynamic_default; then
                    613:        no_dynamic_default=1
                    614:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    615:     fi
1.92      anton     616:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    617: else
                    618:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    619: fi
1.91      anton     620: 
1.136     anton     621: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     622: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     623: 
1.1       anton     624: dnl Checks for programs.
                    625: AC_PROG_LN_S
1.95      anton     626: AC_PROG_INSTALL
1.163     pazsan    627: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
1.1       anton     628: 
                    629: dnl Checks for library functions
1.2       anton     630: dnl This check is just for making later checks link with libm.
                    631: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    632: AC_CHECK_LIB(m,asin)
1.31      anton     633: AC_CHECK_LIB(dl,dlopen)
1.152     pazsan    634: dnl check for libffi 2.x
                    635: AC_CHECK_LIB(ffi,ffi_call)
                    636: if test $ac_cv_lib_ffi_ffi_call = yes
                    637: then
                    638: LIBFFIFLAG="true"
                    639: FFCALLFLAG="false"
                    640: OLDCALLFLAG="false"
                    641: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
                    642: else
1.124     pazsan    643: dnl check for ffcall libraries
                    644: dnl unfortunately, these four calls are separated out into a library each.
                    645: AC_CHECK_LIB(avcall,__builtin_avcall)
                    646: AC_CHECK_LIB(callback,__vacall_r)
                    647: AC_CHECK_LIB(vacall,vacall)
                    648: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.152     pazsan    649: LIBFFIFLAG="false"
1.125     anton     650: FFCALLFLAG="false"
1.129     pazsan    651: OLDCALLFLAG="true"
                    652: 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])
                    653: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.152     pazsan    654: fi
                    655: AC_SUBST(LIBFFIFLAG)
1.125     anton     656: AC_SUBST(FFCALLFLAG)
1.129     pazsan    657: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    658: if test "$host_os" != "nextstep3"
                    659: then
                    660:        AC_FUNC_MEMCMP
                    661: fi
1.25      pazsan    662: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     663: AC_FUNC_FSEEKO
                    664: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     665: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     666: AC_DECL_SYS_SIGLIST
1.138     anton     667: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     668: AC_CHECK_FUNCS(expm1 log1p)
                    669: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     670: dnl No check for select, because our replacement is no good under
                    671: dnl anything but DOS
1.62      anton     672: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     673: AC_FUNC_FNMATCH
1.87      pazsan    674: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     675: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     676: AM_PATH_LISPDIR
1.1       anton     677: 
1.23      pazsan    678: kernel_fi=kernl${wordsize}${bytesex}.fi
                    679: AC_SUBST(kernel_fi)
1.50      jwilke    680: 
1.76      anton     681: #this breaks bindists
                    682: #dnl replace srource directory by absolute value
                    683: #if test $srcdir = "."; then srcdir=`pwd` 
                    684: #fi
1.8       anton     685: 
1.34      anton     686: AC_SUBST(machine)
1.95      anton     687: AC_CONFIG_FILES([
1.31      anton     688: Makefile
1.45      pazsan    689: Makedist
1.43      anton     690: gforthmi
1.80      anton     691: vmgen
1.79      pazsan    692: machpc.fs
1.159     pazsan    693: envos.fs
1.35      anton     694: engine/Makefile
1.161     pazsan    695: doc/version.texi
                    696: build-ec ])
1.95      anton     697: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     698: chmod +x gforthmi
1.80      anton     699: chmod +x vmgen
1.162     pazsan    700: chmod +x build-ec
1.95      anton     701: test -d kernel||mkdir kernel]],[[]])
                    702: AC_OUTPUT
1.44      anton     703: 

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