Annotation of gforth/configure.in, revision 1.69

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
1.41      anton       3: #Copyright (C) 1995,1996,1997,1998 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
                     19: #Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
                     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
1.69    ! anton      25: AM_INIT_AUTOMAKE(gforth,0.4.9-20000726)
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: 
                     38: AC_DEFINE(FORCE_REG))
                     39: dnl this is not quite according to the autoconf manual, it causes a replacement
                     40: AC_ARG_ENABLE(direct-threaded,
                     41: [  --enable-direct-threaded    Force direct threading. This may not work on
                     42:                                some machines and may cause slowdown on others.
                     43:                                (default processor-dependent)],
                     44: AC_DEFINE(DIRECT_THREADED))
                     45: AC_ARG_ENABLE(indirect-threaded,
                     46: [  --enable-indirect-threaded  Force indirect threading. This can cause a
                     47:                                slowdown on some machines.
                     48:                                (default processor-dependent)],
                     49: AC_DEFINE(INDIRECT_THREADED))
                     50: 
1.9       pazsan     51: AC_ARG_WITH(debug,
1.10      anton      52: [  --with-debug     specifies option -g to compile with debug info (default)
1.27      anton      53:   --without-debug  omits the -g switch and creates smaller images on
                     54:                    machines where "strip" has problems with gcc style
                     55:                    debugging informations.],
1.9       pazsan     56: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
                     57: 
1.16      anton      58: CFLAGS=$CFLAGS
                     59: 
1.15      pazsan     60: AC_PROG_CC
                     61: 
                     62: if test "$GCC" = "yes"
                     63: then
                     64:    echo "Fine, gcc is available"
                     65: else
                     66:    cat <<'EOF'
1.16      anton      67: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
                     68: It does not work with other C compilers. Please install the GNU C compiler,
                     69: and try again (or search for a binary distribution for your platform).
1.15      pazsan     70: EOF
                     71:    exit 1
                     72: fi
1.9       pazsan     73: 
1.15      pazsan     74: AC_SUBST(CC)
1.9       pazsan     75: AC_SUBST(DEBUGFLAG)
1.7       anton      76: 
1.10      anton      77: dnl the following macro produces a warning with autoconf-2.1
                     78: AC_CHECK_SIZEOF(char *)
                     79: case "$ac_cv_sizeof_char_p" in
                     80:   2)
                     81:     wordsize=16
                     82:     ;;
                     83:   4)
                     84:     wordsize=32
                     85:     ;;
                     86:   8)
                     87:     wordsize=64
                     88:     ;;
                     89: esac
1.9       pazsan     90: 
1.40      pazsan     91: AC_CHECK_SIZEOF(char)
1.23      pazsan     92: AC_CHECK_SIZEOF(short)
                     93: AC_CHECK_SIZEOF(int)
                     94: AC_CHECK_SIZEOF(long)
                     95: AC_CHECK_SIZEOF(long long)
                     96: 
                     97: ac_cv_int_type_cell=none
                     98: case "$ac_cv_sizeof_char_p" in
1.40      pazsan     99:   $ac_cv_sizeof_int)
                    100:     ac_cv_int_type_cell=int
                    101:     ;;
1.23      pazsan    102:   $ac_cv_sizeof_short)
                    103:     ac_cv_int_type_cell=short
                    104:     ;;
1.40      pazsan    105:   $ac_cv_sizeof_char)
                    106:     ac_cv_int_type_cell=char
1.23      pazsan    107:     ;;
                    108:   $ac_cv_sizeof_long)
                    109:     ac_cv_int_type_cell=long
                    110:     ;;
                    111:   $ac_cv_sizeof_long_long)
                    112:     ac_cv_int_type_cell="long long"
                    113:     ;;
                    114: esac
1.22      pazsan    115: if test "$ac_cv_int_type_cell" != int; then
1.20      anton     116:        echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
                    117:        echo "Since you don't have a proper C on this machine, that's one more reason"
                    118:        echo "to use Forth;-)"
                    119: fi
1.23      pazsan    120: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
                    121: 
                    122: ac_cv_int_type_double_cell=none
                    123: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    124:   $ac_cv_sizeof_short)
                    125:     ac_cv_int_type_double_cell=short
                    126:     ;;
                    127:   $ac_cv_sizeof_int)
                    128:     ac_cv_int_type_double_cell=int
                    129:     ;;
                    130:   $ac_cv_sizeof_long)
                    131:     ac_cv_int_type_double_cell=long
                    132:     ;;
                    133:   $ac_cv_sizeof_long_long)
                    134:     ac_cv_int_type_double_cell="long long"
                    135:     ;;
                    136: esac
1.21      anton     137: if test "$ac_cv_int_type_double_cell" = none; then
1.20      anton     138:        echo "Emulating double-cell arithmetic. This may be slow."
                    139:        echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
1.23      pazsan    140:        echo 'long longs for your machine (the GCC manual states that they \"are twice as'
                    141:        echo "long as \`long int\'\")."
1.20      anton     142:        LIBOBJS="$LIBOBJS dblsub.o"
                    143:        AC_DEFINE(BUGGY_LONG_LONG)
1.23      pazsan    144: else
                    145:   AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
1.20      anton     146: fi
                    147: 
1.50      jwilke    148: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    149: OLDLDFLAGS=$LDFLAGS
                    150: LDFLAGS="$LDFLAGS -export-dynamic"
1.69    ! anton     151: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
        !           152: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
        !           153: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    154: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    155: AC_MSG_RESULT($ac_export_dynamic)
                    156: 
1.1       anton     157: #terminology is a bit unusual here: The host is the system on which
                    158: #gforth will run; the system on which configure will run is the `build'
                    159: AC_CANONICAL_HOST
                    160: case "$host_cpu" in
                    161:        hppa*)
1.34      anton     162:                machine=hppa
1.46      anton     163:                $srcdir/mkinstalldirs arch/hppa
1.38      anton     164:                LIBOBJS="$LIBOBJS ../arch/hppa/cache.o"
1.50      jwilke    165:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     166:                LIBS="$LIBS -L/lib/pa1.1/"
1.31      anton     167:                if test "${enable_direct_threaded+set}" = ""
                    168:                then
                    169:                        AC_DEFINE(DIRECT_THREADED)
                    170:                fi
1.1       anton     171:                ;;
                    172:        sparc*)
1.34      anton     173:                machine=sparc
1.1       anton     174:                ;;
1.31      anton     175:        i386)
1.34      anton     176:                machine=386
1.16      anton     177:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     178:                if test "${enable_direct_threaded+set}" = "" \
                    179:                        -a "${enable_indirect_threaded+set}" = ""
                    180:                then
1.34      anton     181:                        echo "Using direct threaded code on 386"
1.31      anton     182:                        AC_DEFINE(DIRECT_THREADED)
                    183:                fi
                    184:                ;;
                    185:        i486)
1.34      anton     186:                machine=386
1.31      anton     187:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    188:                if test "${enable_direct_threaded+set}" = "" \
                    189:                        -a "${enable_indirect_threaded+set}" = ""
                    190:                then
1.34      anton     191:                        echo "Using direct threaded code on 486"
1.31      anton     192:                        AC_DEFINE(DIRECT_THREADED)
                    193:                fi
                    194:                ;;
1.53      pazsan    195:        i586)
1.34      anton     196:                machine=386
1.55      anton     197:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    198:                CFLAGS_1="$CFLAGS"
                    199:                CFLAGS="$CFLAGS -mpentium"
                    200:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.31      anton     201:                if test "${enable_direct_threaded+set}" = "" \
                    202:                        -a "${enable_indirect_threaded+set}" = ""
                    203:                then
1.53      pazsan    204:                        echo "Using indirect threaded code on Pentium/K5/K6"
1.31      anton     205:                        AC_DEFINE(INDIRECT_THREADED)
1.53      pazsan    206:                fi
                    207:                ;;
                    208:        i686)
                    209:                machine=386
1.55      anton     210:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    211:                CFLAGS_1="$CFLAGS"
1.68      pazsan    212:                CFLAGS="$CFLAGS -mpentium"
1.56      pazsan    213:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.53      pazsan    214:                if test "${enable_direct_threaded+set}" = "" \
                    215:                        -a "${enable_indirect_threaded+set}" = ""
                    216:                then
1.59      pazsan    217:                        echo "Using direct threaded code on Athlon/PPro/Pentium II/Pentium III"
1.53      pazsan    218:                        AC_DEFINE(DIRECT_THREADED)
1.31      anton     219:                fi
1.1       anton     220:                ;;
1.26      pazsan    221:         m68k)
1.34      anton     222:                machine=m68k
1.32      pazsan    223:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    224:                if test "$host_os" = "nextstep3"
                    225:                then
                    226:                        LIBOBJS="$LIBOBJS termios.o"
                    227:                fi
1.26      pazsan    228:                ;;
1.1       anton     229:        mips*)
1.34      anton     230:                machine=mips
1.7       anton     231:                #link text and data segment into the same 256M region!
1.49      anton     232:                AC_MSG_CHECKING([whether the linker accepts -T])
                    233:                OLDLDFLAGS=$LDFLAGS
                    234:                LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
                    235:                AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
                    236:                test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
                    237:                AC_MSG_RESULT($ac_link_mips_t)
                    238:                test $ac_link_mips_t = yes||(echo cannot link text and data into same 256M region, using indirect threading; AC_DEFINE(INDIRECT_THREADED))
1.37      anton     239:                AC_MSG_CHECKING([whether the linker accepts -D])
                    240:                OLDLDFLAGS=$LDFLAGS
1.49      anton     241:                LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
1.37      anton     242:                AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
1.49      anton     243:                test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
1.37      anton     244:                AC_MSG_RESULT($ac_link_mips_d)
1.1       anton     245:                ;;
1.9       pazsan    246:        alpha*)
1.34      anton     247:                machine=alpha
1.58      anton     248:                #full IEEE FP support for more uniformity across platforms:
                    249:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    250:                ;;
1.69    ! anton     251:        power*|rs6000)
1.34      anton     252:                machine=power
1.46      anton     253:                $srcdir/mkinstalldirs arch/power
1.36      anton     254:                AC_CHECK_FUNC(_sync_cache_range,true,LIBOBJS="$LIBOBJS ../arch/power/_sync_cache_range.o")
1.64      anton     255:                #link text segment into first 32MB
                    256:                AC_MSG_CHECKING([whether the linker accepts --script=arch/power/elf32ppc.x])
                    257:                OLDLDFLAGS=$LDFLAGS
                    258:                 #the -L../$srcdir helps when $srcdir is relative
                    259:                LDFLAGS="$LDFLAGS -L$srcdir -L../$srcdir -Xlinker --script=$srcdir/arch/power/elf32ppc.x"
                    260:                AC_TRY_LINK(,,ac_link_script=yes,ac_link_script=no)
                    261:                test $ac_link_script = yes||LDFLAGS=$OLDLDFLAGS
                    262:                AC_MSG_RESULT($ac_link_script)
1.65      anton     263:                AC_MSG_CHECKING([whether the code is in the first 32MB])
                    264:                AC_TRY_RUN([main(){label: exit(((unsigned long)&&label)>32000000UL);}],ac_code_under_32=yes,ac_code_under_32=no,ac_code_under_32=no)
                    265:                 AC_MSG_RESULT($ac_code_under_32)
                    266:                test $ac_code_under_32 = yes||(AC_MSG_WARN([Using indirect threading; please contact us (bug-gforth@gnu.org)]); AC_DEFINE(INDIRECT_THREADED))
1.31      anton     267:                ;;
1.1       anton     268:        *)
                    269:                echo "No direct threading support for $host_cpu, using indirect threading."
1.20      anton     270:                echo "Using a generic machine description."
1.1       anton     271:                echo "I'll assume that C floats and doubles are represented by IEEE single and"
                    272:                echo "double numbers. If this is not so, SF@ etc. will not work correctly."
1.16      anton     273:                echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
1.34      anton     274:                machine=generic
1.1       anton     275: esac
1.10      anton     276: AC_SUBST(host)
1.15      pazsan    277: AC_SUBST(ENGINE_FLAGS)
1.1       anton     278: 
1.66      anton     279: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     280: AC_SUBST(asm_fs)
                    281: 
1.66      anton     282: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     283: AC_SUBST(disasm_fs)
                    284: 
1.39      pazsan    285: case "$host_os" in
                    286:        *win32)
                    287:                EXE=".exe"
                    288:                ;;
                    289:        *)
                    290:                EXE=""
                    291:                ;;
                    292: esac
                    293: AC_SUBST(EXE)
                    294: 
1.1       anton     295: dnl Now a little support for DOS/DJGCC
1.30      pazsan    296: AC_SUBST(GFORTH_EXE)
                    297: GFORTH_EXE=""
1.48      anton     298: AC_SUBST(GFORTHFAST_EXE)
                    299: GFORTHFAST_EXE=""
1.30      pazsan    300: AC_SUBST(GFORTHDITC_EXE)
                    301: GFORTHDITC_EXE=""
1.1       anton     302: 
1.24      anton     303: PATHSEP=":"
                    304: AC_SUBST(PATHSEP)
                    305: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
1.27      anton     306: 
                    307: AC_SUBST(FORTHSIZES)
1.24      anton     308: 
1.1       anton     309: dnl copy commands for systems that don't have links
1.29      pazsan    310: AC_SUBST(LINK_KERNL)
                    311: LINK_KERNL=""
1.1       anton     312: 
                    313: #if test $host_os=dos
                    314: #then
                    315: #  echo Configuring for DOS!!!
                    316: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    317: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     318: #fi
                    319: 
                    320: dnl the following macro produces a warning with autoconf-2.1
                    321: AC_C_BIGENDIAN
1.23      pazsan    322: AC_SUBST(KERNEL)
1.1       anton     323: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    324: if test $ac_cv_c_bigendian = yes; then
                    325:   bytesex=b
1.23      pazsan    326:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     327: else
                    328:   bytesex=l
1.23      pazsan    329:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     330: fi
                    331: 
                    332: dnl Checks for programs.
                    333: AC_PROG_LN_S
1.34      anton     334: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
1.1       anton     335: 
                    336: dnl Checks for library functions
1.2       anton     337: dnl This check is just for making later checks link with libm.
                    338: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    339: AC_CHECK_LIB(m,asin)
1.31      anton     340: AC_CHECK_LIB(dl,dlopen)
1.32      pazsan    341: if test "$host_os" != "nextstep3"
                    342: then
                    343:        AC_FUNC_MEMCMP
                    344: fi
1.25      pazsan    345: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.44      anton     346: AC_CHECK_FUNCS(dlopen sys_siglist)
1.19      anton     347: AC_DECL_SYS_SIGLIST
1.34      anton     348: AC_CHECK_FUNC(getopt_long,true,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
1.11      anton     349: AC_CHECK_FUNCS(rint expm1 log1p)
1.1       anton     350: AC_REPLACE_FUNCS(ecvt)
                    351: dnl No check for select, because our replacement is no good under
                    352: dnl anything but DOS
1.62      anton     353: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     354: AC_FUNC_FNMATCH
                    355: test $ac_cv_func_fnmatch_works = yes || LIBOBJS="$LIBOBJS fnmatch.o"
1.28      anton     356: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     357: AM_PATH_LISPDIR
1.1       anton     358: 
1.23      pazsan    359: kernel_fi=kernl${wordsize}${bytesex}.fi
                    360: AC_SUBST(kernel_fi)
1.50      jwilke    361: 
                    362: dnl replace srource directory by absolute value
                    363: if test $srcdir = "."; then srcdir=`pwd` 
                    364: fi
1.8       anton     365: 
1.34      anton     366: AC_SUBST(machine)
                    367: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
1.31      anton     368: AC_OUTPUT([
                    369: Makefile
1.45      pazsan    370: Makedist
1.43      anton     371: gforthmi
1.35      anton     372: engine/Makefile
1.44      anton     373: doc/version.texi ],
                    374: echo timestamp > stamp-h
1.43      anton     375: chmod +x gforthmi
1.44      anton     376: test -d kernel||mkdir kernel)
                    377: 

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