Annotation of gforth/configure.in, revision 1.79

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
1.73      anton       3: #Copyright (C) 1995,1996,1997,1998,2000 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: 
1.31      anton      21: AC_INIT(engine/engine.c)
1.34      anton      22: 
                     23: dnl We use some automake macros here,
                     24: dnl but don't use automake for creating Makefile.in
1.78      anton      25: AM_INIT_AUTOMAKE(gforth,0.5.9-20010129)
1.47      anton      26: #snapshots have numbers major.minor.release-YYYYMMDD
                     27: #note that lexicographic ordering bust be heeded.
                     28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
1.34      anton      29: AM_CONFIG_HEADER(engine/config.h)
1.57      anton      30: #AM_CYGWIN32
1.14      anton      31: 
1.1       anton      32: AC_ARG_ENABLE(force-reg,
                     33: [  --enable-force-reg    Use explicit register declarations if they appear in
                     34:                          the machine.h file. This can cause a good speedup,
                     35:                          but also incorrect code with some gcc versions on
                     36:                          some processors (default disabled).],
                     37: AC_DEFINE(FORCE_REG))
                     38: dnl this is not quite according to the autoconf manual, it causes a replacement
                     39: AC_ARG_ENABLE(direct-threaded,
                     40: [  --enable-direct-threaded    Force direct threading. This may not work on
                     41:                                some machines and may cause slowdown on others.
                     42:                                (default processor-dependent)],
                     43: AC_DEFINE(DIRECT_THREADED))
                     44: AC_ARG_ENABLE(indirect-threaded,
                     45: [  --enable-indirect-threaded  Force indirect threading. This can cause a
                     46:                                slowdown on some machines.
                     47:                                (default processor-dependent)],
                     48: AC_DEFINE(INDIRECT_THREADED))
                     49: 
1.9       pazsan     50: AC_ARG_WITH(debug,
1.10      anton      51: [  --with-debug     specifies option -g to compile with debug info (default)
1.27      anton      52:   --without-debug  omits the -g switch and creates smaller images on
                     53:                    machines where "strip" has problems with gcc style
                     54:                    debugging informations.],
1.9       pazsan     55: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
                     56: 
1.79    ! pazsan     57: PEEPHOLE="yes"
        !            58: AC_ARG_WITH(peephole,
        !            59: [  --with-peephole     Enable peephole optimization (default)
        !            60:   --without-peephole   disables peephole optimization. Creates smaller,
        !            61:                        but slower images.],
        !            62: PEEPHOLE="$withval")
        !            63: 
1.16      anton      64: CFLAGS=$CFLAGS
                     65: 
1.15      pazsan     66: AC_PROG_CC
                     67: 
                     68: if test "$GCC" = "yes"
                     69: then
                     70:    echo "Fine, gcc is available"
                     71: else
                     72:    cat <<'EOF'
1.16      anton      73: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
                     74: It does not work with other C compilers. Please install the GNU C compiler,
                     75: and try again (or search for a binary distribution for your platform).
1.15      pazsan     76: EOF
                     77:    exit 1
                     78: fi
1.9       pazsan     79: 
1.15      pazsan     80: AC_SUBST(CC)
1.9       pazsan     81: AC_SUBST(DEBUGFLAG)
1.7       anton      82: 
1.10      anton      83: dnl the following macro produces a warning with autoconf-2.1
                     84: AC_CHECK_SIZEOF(char *)
                     85: case "$ac_cv_sizeof_char_p" in
                     86:   2)
                     87:     wordsize=16
                     88:     ;;
                     89:   4)
                     90:     wordsize=32
                     91:     ;;
                     92:   8)
                     93:     wordsize=64
                     94:     ;;
                     95: esac
1.9       pazsan     96: 
1.40      pazsan     97: AC_CHECK_SIZEOF(char)
1.23      pazsan     98: AC_CHECK_SIZEOF(short)
                     99: AC_CHECK_SIZEOF(int)
                    100: AC_CHECK_SIZEOF(long)
                    101: AC_CHECK_SIZEOF(long long)
                    102: 
                    103: ac_cv_int_type_cell=none
                    104: case "$ac_cv_sizeof_char_p" in
1.40      pazsan    105:   $ac_cv_sizeof_int)
                    106:     ac_cv_int_type_cell=int
                    107:     ;;
1.23      pazsan    108:   $ac_cv_sizeof_short)
                    109:     ac_cv_int_type_cell=short
                    110:     ;;
1.40      pazsan    111:   $ac_cv_sizeof_char)
                    112:     ac_cv_int_type_cell=char
1.23      pazsan    113:     ;;
                    114:   $ac_cv_sizeof_long)
                    115:     ac_cv_int_type_cell=long
                    116:     ;;
                    117:   $ac_cv_sizeof_long_long)
                    118:     ac_cv_int_type_cell="long long"
                    119:     ;;
                    120: esac
1.22      pazsan    121: if test "$ac_cv_int_type_cell" != int; then
1.20      anton     122:        echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
                    123:        echo "Since you don't have a proper C on this machine, that's one more reason"
                    124:        echo "to use Forth;-)"
                    125: fi
1.23      pazsan    126: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
                    127: 
                    128: ac_cv_int_type_double_cell=none
                    129: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    130:   $ac_cv_sizeof_short)
                    131:     ac_cv_int_type_double_cell=short
                    132:     ;;
                    133:   $ac_cv_sizeof_int)
                    134:     ac_cv_int_type_double_cell=int
                    135:     ;;
                    136:   $ac_cv_sizeof_long)
                    137:     ac_cv_int_type_double_cell=long
                    138:     ;;
                    139:   $ac_cv_sizeof_long_long)
                    140:     ac_cv_int_type_double_cell="long long"
                    141:     ;;
                    142: esac
1.21      anton     143: if test "$ac_cv_int_type_double_cell" = none; then
1.20      anton     144:        echo "Emulating double-cell arithmetic. This may be slow."
                    145:        echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
1.23      pazsan    146:        echo 'long longs for your machine (the GCC manual states that they \"are twice as'
                    147:        echo "long as \`long int\'\")."
1.20      anton     148:        LIBOBJS="$LIBOBJS dblsub.o"
                    149:        AC_DEFINE(BUGGY_LONG_LONG)
1.23      pazsan    150: else
                    151:   AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
1.20      anton     152: fi
                    153: 
1.50      jwilke    154: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    155: OLDLDFLAGS=$LDFLAGS
                    156: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     157: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    158: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    159: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    160: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    161: AC_MSG_RESULT($ac_export_dynamic)
                    162: 
1.1       anton     163: #terminology is a bit unusual here: The host is the system on which
                    164: #gforth will run; the system on which configure will run is the `build'
                    165: AC_CANONICAL_HOST
                    166: case "$host_cpu" in
                    167:        hppa*)
1.34      anton     168:                machine=hppa
1.46      anton     169:                $srcdir/mkinstalldirs arch/hppa
1.38      anton     170:                LIBOBJS="$LIBOBJS ../arch/hppa/cache.o"
1.50      jwilke    171:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     172:                LIBS="$LIBS -L/lib/pa1.1/"
1.31      anton     173:                if test "${enable_direct_threaded+set}" = ""
                    174:                then
                    175:                        AC_DEFINE(DIRECT_THREADED)
                    176:                fi
1.1       anton     177:                ;;
                    178:        sparc*)
1.34      anton     179:                machine=sparc
1.1       anton     180:                ;;
1.31      anton     181:        i386)
1.34      anton     182:                machine=386
1.16      anton     183:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     184:                if test "${enable_direct_threaded+set}" = "" \
                    185:                        -a "${enable_indirect_threaded+set}" = ""
                    186:                then
1.34      anton     187:                        echo "Using direct threaded code on 386"
1.31      anton     188:                        AC_DEFINE(DIRECT_THREADED)
                    189:                fi
                    190:                ;;
                    191:        i486)
1.34      anton     192:                machine=386
1.31      anton     193:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    194:                if test "${enable_direct_threaded+set}" = "" \
                    195:                        -a "${enable_indirect_threaded+set}" = ""
                    196:                then
1.34      anton     197:                        echo "Using direct threaded code on 486"
1.31      anton     198:                        AC_DEFINE(DIRECT_THREADED)
                    199:                fi
                    200:                ;;
1.77      anton     201:        i*86)
1.34      anton     202:                machine=386
1.55      anton     203:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    204:                CFLAGS_1="$CFLAGS"
                    205:                CFLAGS="$CFLAGS -mpentium"
                    206:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.31      anton     207:                if test "${enable_direct_threaded+set}" = "" \
                    208:                        -a "${enable_indirect_threaded+set}" = ""
                    209:                then
1.77      anton     210:                        echo "Using indirect threaded code on IA32 CPUs with split L1 caches"
1.31      anton     211:                        AC_DEFINE(INDIRECT_THREADED)
                    212:                fi
1.1       anton     213:                ;;
1.72      anton     214:        ia64*)
                    215:                machine=ia64
                    216:                ;;
1.26      pazsan    217:         m68k)
1.34      anton     218:                machine=m68k
1.32      pazsan    219:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    220:                if test "$host_os" = "nextstep3"
                    221:                then
                    222:                        LIBOBJS="$LIBOBJS termios.o"
                    223:                fi
1.26      pazsan    224:                ;;
1.1       anton     225:        mips*)
1.34      anton     226:                machine=mips
1.7       anton     227:                #link text and data segment into the same 256M region!
1.49      anton     228:                AC_MSG_CHECKING([whether the linker accepts -T])
                    229:                OLDLDFLAGS=$LDFLAGS
                    230:                LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
                    231:                AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
                    232:                test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
                    233:                AC_MSG_RESULT($ac_link_mips_t)
                    234:                test $ac_link_mips_t = yes||(echo cannot link text and data into same 256M region, using indirect threading; AC_DEFINE(INDIRECT_THREADED))
1.37      anton     235:                AC_MSG_CHECKING([whether the linker accepts -D])
                    236:                OLDLDFLAGS=$LDFLAGS
1.49      anton     237:                LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
1.37      anton     238:                AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
1.49      anton     239:                test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
1.37      anton     240:                AC_MSG_RESULT($ac_link_mips_d)
1.1       anton     241:                ;;
1.9       pazsan    242:        alpha*)
1.34      anton     243:                machine=alpha
1.58      anton     244:                #full IEEE FP support for more uniformity across platforms:
                    245:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    246:                ;;
1.69      anton     247:        power*|rs6000)
1.34      anton     248:                machine=power
1.46      anton     249:                $srcdir/mkinstalldirs arch/power
1.36      anton     250:                AC_CHECK_FUNC(_sync_cache_range,true,LIBOBJS="$LIBOBJS ../arch/power/_sync_cache_range.o")
1.64      anton     251:                #link text segment into first 32MB
                    252:                AC_MSG_CHECKING([whether the linker accepts --script=arch/power/elf32ppc.x])
                    253:                OLDLDFLAGS=$LDFLAGS
                    254:                 #the -L../$srcdir helps when $srcdir is relative
                    255:                LDFLAGS="$LDFLAGS -L$srcdir -L../$srcdir -Xlinker --script=$srcdir/arch/power/elf32ppc.x"
                    256:                AC_TRY_LINK(,,ac_link_script=yes,ac_link_script=no)
                    257:                test $ac_link_script = yes||LDFLAGS=$OLDLDFLAGS
                    258:                AC_MSG_RESULT($ac_link_script)
1.65      anton     259:                AC_MSG_CHECKING([whether the code is in the first 32MB])
                    260:                AC_TRY_RUN([main(){label: exit(((unsigned long)&&label)>32000000UL);}],ac_code_under_32=yes,ac_code_under_32=no,ac_code_under_32=no)
                    261:                 AC_MSG_RESULT($ac_code_under_32)
1.70      anton     262:                test $ac_code_under_32 = yes||(AC_MSG_WARN([Using indirect threading]); AC_DEFINE(INDIRECT_THREADED))
1.31      anton     263:                ;;
1.1       anton     264:        *)
                    265:                echo "No direct threading support for $host_cpu, using indirect threading."
1.20      anton     266:                echo "Using a generic machine description."
1.1       anton     267:                echo "I'll assume that C floats and doubles are represented by IEEE single and"
                    268:                echo "double numbers. If this is not so, SF@ etc. will not work correctly."
1.16      anton     269:                echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
1.34      anton     270:                machine=generic
1.1       anton     271: esac
1.10      anton     272: AC_SUBST(host)
1.15      pazsan    273: AC_SUBST(ENGINE_FLAGS)
1.1       anton     274: 
1.66      anton     275: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     276: AC_SUBST(asm_fs)
                    277: 
1.66      anton     278: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     279: AC_SUBST(disasm_fs)
                    280: 
1.39      pazsan    281: case "$host_os" in
                    282:        *win32)
                    283:                EXE=".exe"
                    284:                ;;
                    285:        *)
                    286:                EXE=""
                    287:                ;;
                    288: esac
                    289: AC_SUBST(EXE)
                    290: 
1.1       anton     291: dnl Now a little support for DOS/DJGCC
1.30      pazsan    292: AC_SUBST(GFORTH_EXE)
                    293: GFORTH_EXE=""
1.48      anton     294: AC_SUBST(GFORTHFAST_EXE)
                    295: GFORTHFAST_EXE=""
1.30      pazsan    296: AC_SUBST(GFORTHDITC_EXE)
                    297: GFORTHDITC_EXE=""
1.1       anton     298: 
1.24      anton     299: PATHSEP=":"
                    300: AC_SUBST(PATHSEP)
                    301: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
1.27      anton     302: 
                    303: AC_SUBST(FORTHSIZES)
1.24      anton     304: 
1.79    ! pazsan    305: if test "$PEEPHOLE" = "yes"
        !           306: then
        !           307:    PEEPHOLEFLAG="true"
        !           308:    AC_DEFINE(HAS_PEEPHOLE)
        !           309: else
        !           310:    PEEPHOLEFLAG="false"
        !           311: fi
        !           312: AC_SUBST(PEEPHOLEFLAG)
        !           313: 
1.1       anton     314: dnl copy commands for systems that don't have links
1.29      pazsan    315: AC_SUBST(LINK_KERNL)
                    316: LINK_KERNL=""
1.1       anton     317: 
                    318: #if test $host_os=dos
                    319: #then
                    320: #  echo Configuring for DOS!!!
                    321: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    322: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     323: #fi
                    324: 
                    325: dnl the following macro produces a warning with autoconf-2.1
                    326: AC_C_BIGENDIAN
1.23      pazsan    327: AC_SUBST(KERNEL)
1.1       anton     328: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    329: if test $ac_cv_c_bigendian = yes; then
                    330:   bytesex=b
1.23      pazsan    331:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     332: else
                    333:   bytesex=l
1.23      pazsan    334:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     335: fi
                    336: 
                    337: dnl Checks for programs.
                    338: AC_PROG_LN_S
1.34      anton     339: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
1.1       anton     340: 
                    341: dnl Checks for library functions
1.2       anton     342: dnl This check is just for making later checks link with libm.
                    343: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    344: AC_CHECK_LIB(m,asin)
1.31      anton     345: AC_CHECK_LIB(dl,dlopen)
1.32      pazsan    346: if test "$host_os" != "nextstep3"
                    347: then
                    348:        AC_FUNC_MEMCMP
                    349: fi
1.25      pazsan    350: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.71      anton     351: AC_CHECK_FUNCS(dlopen sys_siglist getrusage)
1.19      anton     352: AC_DECL_SYS_SIGLIST
1.34      anton     353: AC_CHECK_FUNC(getopt_long,true,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
1.11      anton     354: AC_CHECK_FUNCS(rint expm1 log1p)
1.1       anton     355: AC_REPLACE_FUNCS(ecvt)
                    356: dnl No check for select, because our replacement is no good under
                    357: dnl anything but DOS
1.62      anton     358: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     359: AC_FUNC_FNMATCH
                    360: test $ac_cv_func_fnmatch_works = yes || LIBOBJS="$LIBOBJS fnmatch.o"
1.28      anton     361: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     362: AM_PATH_LISPDIR
1.1       anton     363: 
1.23      pazsan    364: kernel_fi=kernl${wordsize}${bytesex}.fi
                    365: AC_SUBST(kernel_fi)
1.50      jwilke    366: 
1.76      anton     367: #this breaks bindists
                    368: #dnl replace srource directory by absolute value
                    369: #if test $srcdir = "."; then srcdir=`pwd` 
                    370: #fi
1.8       anton     371: 
1.34      anton     372: AC_SUBST(machine)
                    373: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
1.31      anton     374: AC_OUTPUT([
                    375: Makefile
1.45      pazsan    376: Makedist
1.43      anton     377: gforthmi
1.79    ! pazsan    378: machpc.fs
1.35      anton     379: engine/Makefile
1.44      anton     380: doc/version.texi ],
                    381: echo timestamp > stamp-h
1.43      anton     382: chmod +x gforthmi
1.44      anton     383: test -d kernel||mkdir kernel)
                    384: 

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