Annotation of gforth/configure.in, revision 1.151

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
1.143     anton       3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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
1.136     anton      24: AC_INIT([gforth],[0.6.2-20030910],[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!
1.136     anton      29: UPDATED="September 10, 2003"
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])
1.136     anton     115: AC_ARG_VAR(skip_code, [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 "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan    139: 
1.15      pazsan    140: AC_SUBST(CC)
1.9       pazsan    141: AC_SUBST(DEBUGFLAG)
1.7       anton     142: 
1.128     pazsan    143: AC_MSG_CHECKING(make type)
                    144: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
                    145: 
                    146: GNUMAKE='#'
                    147: test "$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:                $srcdir/mkinstalldirs arch/power
1.138     anton     246:                AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
1.103     anton     247:                #long long is broken on (at least) gcc-2.95.* for PPC
1.104     anton     248:                test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
1.31      anton     249:                ;;
1.1       anton     250:        *)
1.92      anton     251:                AC_MSG_WARN([Using a generic machine description])
                    252:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    253:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     254:                machine=generic
1.97      anton     255:                #I-cache flushing would be needed for dynamic code generation
1.136     anton     256:                if test -z $no_dynamic_default; then
                    257:                    no_dynamic_default=1
                    258:                    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                    259:                fi
1.1       anton     260: esac
1.10      anton     261: AC_SUBST(host)
1.151   ! anton     262: 
        !           263: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
        !           264: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
        !           265:                   [number of registers in the default stack cache state for gforth-fast and gforth-native])
1.146     pazsan    266: 
                    267: if test "${enable_force_ll+set}" = set; then
                    268:    ac_includes_default="$ac_includes_default
                    269: #include \"arch/generic/128bit.h\""
                    270: fi
1.103     anton     271: 
                    272: dnl the following macro produces a warning with autoconf-2.1
                    273: AC_CHECK_SIZEOF(char *)
                    274: case "$ac_cv_sizeof_char_p" in
                    275:   2)
                    276:     wordsize=16
                    277:     ;;
                    278:   4)
                    279:     wordsize=32
                    280:     ;;
                    281:   8)
                    282:     wordsize=64
                    283:     ;;
                    284: esac
                    285: 
                    286: AC_CHECK_SIZEOF(char)
                    287: AC_CHECK_SIZEOF(short)
                    288: AC_CHECK_SIZEOF(int)
                    289: AC_CHECK_SIZEOF(long)
                    290: AC_CHECK_SIZEOF(long long)
                    291: AC_CHECK_SIZEOF(intptr_t)
                    292: AC_CHECK_SIZEOF(int128_t)
1.144     pazsan    293: AC_CHECK_SIZEOF(uint128_t)
1.103     anton     294: 
                    295: AC_MSG_CHECKING([for a C type for cells])
                    296: ac_cv_int_type_cell=none
                    297: case "$ac_cv_sizeof_char_p" in
                    298:   $ac_cv_sizeof_int)
                    299:     ac_cv_int_type_cell=int
                    300:     ;;
                    301:   $ac_cv_sizeof_short)
                    302:     ac_cv_int_type_cell=short
                    303:     ;;
                    304:   $ac_cv_sizeof_char)
                    305:     ac_cv_int_type_cell=char
                    306:     ;;
                    307:   $ac_cv_sizeof_long)
                    308:     ac_cv_int_type_cell=long
                    309:     ;;
                    310:   $ac_cv_sizeof_long_long)
                    311:     ac_cv_int_type_cell="long long"
                    312:     ;;
                    313:   $ac_cv_sizeof_intptr_t)
                    314:     ac_cv_int_type_cell="intptr_t"
                    315:     ;;
                    316:   $ac_cv_sizeof_int128_t)
                    317:     ac_cv_int_type_cell="int128_t"
                    318:     ;;
                    319: esac
                    320: AC_MSG_RESULT($ac_cv_int_type_cell)
                    321: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
                    322: 
                    323: AC_MSG_CHECKING([for a C type for double-cells])
                    324: ac_cv_int_type_double_cell=none
                    325: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    326:   $ac_cv_sizeof_short)
                    327:     ac_cv_int_type_double_cell=short
                    328:     ;;
                    329:   $ac_cv_sizeof_int)
                    330:     ac_cv_int_type_double_cell=int
                    331:     ;;
                    332:   $ac_cv_sizeof_long)
                    333:     ac_cv_int_type_double_cell=long
                    334:     ;;
                    335:   $ac_cv_sizeof_long_long)
                    336:     ac_cv_int_type_double_cell="long long"
                    337:     ;;
                    338:   $ac_cv_sizeof_intptr_t)
                    339:     ac_cv_int_type_double_cell="intptr_t"
                    340:     ;;
                    341:   $ac_cv_sizeof_int128_t)
                    342:     ac_cv_int_type_double_cell="int128_t"
                    343:     ;;
                    344: esac
                    345: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.144     pazsan    346: 
                    347: AC_MSG_CHECKING([for a C type for unsigned double-cells])
                    348: ac_cv_int_type_double_ucell=none
                    349: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    350:   $ac_cv_sizeof_short)
                    351:     ac_cv_int_type_double_ucell="unsigned short"
                    352:     ;;
                    353:   $ac_cv_sizeof_int)
                    354:     ac_cv_int_type_double_ucell="unsigned int"
                    355:     ;;
                    356:   $ac_cv_sizeof_long)
                    357:     ac_cv_int_type_double_ucell="unsigned long"
                    358:     ;;
                    359:   $ac_cv_sizeof_long_long)
                    360:     ac_cv_int_type_double_ucell="unsigned long long"
                    361:     ;;
                    362:   $ac_cv_sizeof_intptr_t)
                    363:     ac_cv_int_type_double_ucell="unsigned intptr_t"
                    364:     ;;
                    365:   $ac_cv_sizeof_uint128_t)
                    366:     ac_cv_int_type_double_ucell="uint128_t"
                    367:     ;;
                    368: esac
                    369: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
                    370: 
                    371: if test "$ac_cv_int_type_double_cell" = none || \
                    372:    test "$ac_cv_int_type_double_ucell" = none
                    373: then
1.103     anton     374:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
                    375:        AC_LIBOBJ(dblsub)
                    376:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
                    377: else
                    378:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.144     pazsan    379:        AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
1.103     anton     380: fi
                    381: 
                    382: AC_TYPE_OFF_T
                    383: AC_CHECK_SIZEOF(off_t)
                    384: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
                    385: ac_small_off_t=$?
                    386: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
1.1       anton     387: 
1.109     anton     388: ENGINE_FLAGS=
                    389: AC_SUBST(ENGINE_FLAGS)
                    390: 
                    391: # Try if GCC understands -fno-gcse
                    392: 
                    393: AC_MSG_CHECKING([if $CC understands -fno-gcse])
                    394: CFLAGS_1="$CFLAGS"
                    395: CFLAGS="$CFLAGS -fno-gcse"
                    396: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
                    397: CFLAGS="$CFLAGS_1"
                    398: AC_MSG_RESULT($ac_nogcse)
                    399: 
                    400: # Try if GCC understands -fno-strict-aliasing
                    401: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
                    402: CFLAGS_1="$CFLAGS"
                    403: CFLAGS="$CFLAGS -fno-strict-aliasing"
                    404: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
                    405: CFLAGS="$CFLAGS_1"
                    406: AC_MSG_RESULT($ac_nostrictaliasing)
                    407: 
1.123     anton     408: # Try if GCC understands -fno-crossjumping
                    409: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
1.88      pazsan    410: CFLAGS_1="$CFLAGS"
1.123     anton     411: CFLAGS="$CFLAGS -fno-crossjumping"
1.125     anton     412: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
1.109     anton     413: CFLAGS="$CFLAGS_1"
1.124     pazsan    414: AC_MSG_RESULT($ac_nocrossjumping)
1.88      pazsan    415: 
1.137     pazsan    416: # Try if GCC understands -fno-reorder-blocks
                    417: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
                    418: CFLAGS_1="$CFLAGS"
                    419: CFLAGS="$CFLAGS -fno-reorder-blocks"
                    420: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
                    421: CFLAGS="$CFLAGS_1"
                    422: AC_MSG_RESULT($ac_noreorder_blocks)
                    423: 
1.130     anton     424: # Try if GCC understands __attribute__((unused))
                    425: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
                    426: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
                    427: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
                    428: AC_MSG_RESULT($MAYBE_UNUSED)
                    429: 
1.66      anton     430: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     431: AC_SUBST(asm_fs)
                    432: 
1.66      anton     433: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     434: AC_SUBST(disasm_fs)
                    435: 
1.116     anton     436: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
1.114     anton     437: 
1.39      pazsan    438: case "$host_os" in
1.107     anton     439:        *win32|cygwin)
1.108     anton     440:                DIRSEP="\\\\"
1.127     anton     441:                PATHSEP=";"
1.142     anton     442:                #we want the builtins of command.com/cmd.exe and its
                    443:                # handling of .com files.
                    444:                #$COMSPEC contains the name of the Windows shell;
                    445:                # the ./ is there, because the bash does not recognize
                    446:                # absolute DOS filenames
                    447:                DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
1.39      pazsan    448:                ;;
1.97      anton     449:        *darwin*)
                    450:                #Darwin uses some funny preprocessor by default; eliminate it:
1.127     anton     451:                AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
1.120     anton     452:                CFLAGS="$CFLAGS -no-cpp-precomp"
1.98      anton     453:                DIRSEP="/"
1.127     anton     454:                PATHSEP=":"
1.141     anton     455:                DEFAULTSYSTEMPREFIX=""
1.98      anton     456:                ;;
1.39      pazsan    457:        *)
1.88      pazsan    458:                DIRSEP="/"
1.127     anton     459:                PATHSEP=":"
1.141     anton     460:                DEFAULTSYSTEMPREFIX=""
1.39      pazsan    461:                ;;
                    462: esac
1.88      pazsan    463: AC_SUBST(DIRSEP)
1.89      pazsan    464: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.127     anton     465: AC_SUBST(PATHSEP)
                    466: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.141     anton     467: AC_SUBST(DEFAULTSYSTEMPREFIX)
                    468: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
1.39      pazsan    469: 
1.1       anton     470: dnl Now a little support for DOS/DJGCC
1.30      pazsan    471: AC_SUBST(GFORTH_EXE)
                    472: GFORTH_EXE=""
1.48      anton     473: AC_SUBST(GFORTHFAST_EXE)
                    474: GFORTHFAST_EXE=""
1.83      anton     475: AC_SUBST(GFORTHITC_EXE)
                    476: GFORTHITC_EXE=""
1.30      pazsan    477: AC_SUBST(GFORTHDITC_EXE)
                    478: GFORTHDITC_EXE=""
1.27      anton     479: 
                    480: AC_SUBST(FORTHSIZES)
1.24      anton     481: 
1.104     anton     482: dnl if test "$PEEPHOLE" = "yes"
                    483: dnl then
                    484: dnl    PEEPHOLEFLAG="true"
                    485: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
                    486: dnl else
                    487: dnl    PEEPHOLEFLAG="false"
                    488: dnl fi
                    489: PEEPHOLEFLAG="true"
1.79      pazsan    490: AC_SUBST(PEEPHOLEFLAG)
                    491: 
1.1       anton     492: dnl copy commands for systems that don't have links
1.29      pazsan    493: AC_SUBST(LINK_KERNL)
                    494: LINK_KERNL=""
1.1       anton     495: 
                    496: #if test $host_os=dos
                    497: #then
                    498: #  echo Configuring for DOS!!!
                    499: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    500: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     501: #fi
                    502: 
                    503: dnl the following macro produces a warning with autoconf-2.1
                    504: AC_C_BIGENDIAN
1.23      pazsan    505: AC_SUBST(KERNEL)
1.1       anton     506: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    507: if test $ac_cv_c_bigendian = yes; then
                    508:   bytesex=b
1.23      pazsan    509:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     510: else
                    511:   bytesex=l
1.23      pazsan    512:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     513: fi
                    514: 
1.91      anton     515: #check how to do asm(".skip 16")
1.148     anton     516: echo "CFLAGS=$CFLAGS"
                    517: echo "ac_link=$ac_link"
1.92      anton     518: AC_MSG_CHECKING([if and how we can waste code space])
1.136     anton     519: if test -z "$skipcode"; then
1.148     anton     520:     skipcode=no
                    521:     CFLAGS_1="$CFLAGS"
                    522:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
1.136     anton     523:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    524:     do
1.91      anton     525:        AC_TRY_RUN(
1.136     anton     526: [int foo(int,int,int);
1.91      anton     527: main()
                    528: {
1.136     anton     529:   exit(foo(0,0,0)!=16);
1.91      anton     530: }
1.136     anton     531: int foo(int x, int y, int z)
1.91      anton     532: {
1.136     anton     533:   static void *labels[]={&&label1, &&label2};
1.91      anton     534:   if (x) {
1.136     anton     535:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
1.91      anton     536:   label1:
1.148     anton     537:     asm("$i"); /* or ".space 16" or somesuch */
1.136     anton     538:   label2: ;
                    539:   }
                    540:   {
                    541:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
                    542:   return labels[1]-labels[0];
1.91      anton     543:   }
1.136     anton     544: }]
1.92      anton     545:        ,skipcode=$i; break
                    546:        ,,)
1.136     anton     547:     done
1.148     anton     548:     CFLAGS=$CFLAGS_1
1.136     anton     549: fi
1.92      anton     550: AC_MSG_RESULT($skipcode)
                    551: if test "$skipcode" = no
                    552: then 
1.136     anton     553:     if test -z $no_dynamic_default; then
                    554:        no_dynamic_default=1
                    555:        AC_MSG_WARN(Disabling default dynamic native code generation)
                    556:     fi
1.92      anton     557:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    558: else
                    559:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    560: fi
1.91      anton     561: 
1.136     anton     562: test "$no_dynamic_default" || no_dynamic_default=0
1.92      anton     563: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     564: 
1.1       anton     565: dnl Checks for programs.
                    566: AC_PROG_LN_S
1.95      anton     567: AC_PROG_INSTALL
1.1       anton     568: 
                    569: dnl Checks for library functions
1.2       anton     570: dnl This check is just for making later checks link with libm.
                    571: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    572: AC_CHECK_LIB(m,asin)
1.31      anton     573: AC_CHECK_LIB(dl,dlopen)
1.124     pazsan    574: dnl check for ffcall libraries
                    575: dnl unfortunately, these four calls are separated out into a library each.
                    576: AC_CHECK_LIB(avcall,__builtin_avcall)
                    577: AC_CHECK_LIB(callback,__vacall_r)
                    578: AC_CHECK_LIB(vacall,vacall)
                    579: AC_CHECK_LIB(trampoline,alloc_trampoline)
1.125     anton     580: FFCALLFLAG="false"
1.129     pazsan    581: OLDCALLFLAG="true"
                    582: 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])
                    583: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
1.125     anton     584: AC_SUBST(FFCALLFLAG)
1.129     pazsan    585: AC_SUBST(OLDCALLFLAG)
1.32      pazsan    586: if test "$host_os" != "nextstep3"
                    587: then
                    588:        AC_FUNC_MEMCMP
                    589: fi
1.25      pazsan    590: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.97      anton     591: AC_FUNC_FSEEKO
                    592: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
1.111     anton     593: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
1.19      anton     594: AC_DECL_SYS_SIGLIST
1.138     anton     595: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
1.90      anton     596: AC_CHECK_FUNCS(expm1 log1p)
                    597: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     598: dnl No check for select, because our replacement is no good under
                    599: dnl anything but DOS
1.62      anton     600: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     601: AC_FUNC_FNMATCH
1.87      pazsan    602: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     603: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     604: AM_PATH_LISPDIR
1.1       anton     605: 
1.23      pazsan    606: kernel_fi=kernl${wordsize}${bytesex}.fi
                    607: AC_SUBST(kernel_fi)
1.50      jwilke    608: 
1.76      anton     609: #this breaks bindists
                    610: #dnl replace srource directory by absolute value
                    611: #if test $srcdir = "."; then srcdir=`pwd` 
                    612: #fi
1.8       anton     613: 
1.34      anton     614: AC_SUBST(machine)
1.95      anton     615: AC_CONFIG_FILES([
1.31      anton     616: Makefile
1.45      pazsan    617: Makedist
1.43      anton     618: gforthmi
1.80      anton     619: vmgen
1.79      pazsan    620: machpc.fs
1.35      anton     621: engine/Makefile
1.95      anton     622: doc/version.texi ])
                    623: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
1.43      anton     624: chmod +x gforthmi
1.80      anton     625: chmod +x vmgen
1.95      anton     626: test -d kernel||mkdir kernel]],[[]])
                    627: AC_OUTPUT
1.44      anton     628: 

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