Annotation of gforth/configure.in, revision 1.82

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
1.81      anton      25: AM_INIT_AUTOMAKE(gforth,0.5.9-20010501)
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: 
1.9       pazsan     39: AC_ARG_WITH(debug,
1.10      anton      40: [  --with-debug     specifies option -g to compile with debug info (default)
1.27      anton      41:   --without-debug  omits the -g switch and creates smaller images on
                     42:                    machines where "strip" has problems with gcc style
                     43:                    debugging informations.],
1.9       pazsan     44: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
                     45: 
1.79      pazsan     46: PEEPHOLE="yes"
                     47: AC_ARG_WITH(peephole,
                     48: [  --with-peephole     Enable peephole optimization (default)
                     49:   --without-peephole   disables peephole optimization. Creates smaller,
                     50:                        but slower images.],
                     51: PEEPHOLE="$withval")
1.82    ! anton      52: 
        !            53: #currently we force direct threading this way.  Eventually we should
        !            54: #setup in the arch and engine files right
        !            55: AC_DEFINE(DIRECT_THREADED)
1.79      pazsan     56: 
1.16      anton      57: CFLAGS=$CFLAGS
                     58: 
1.15      pazsan     59: AC_PROG_CC
                     60: 
                     61: if test "$GCC" = "yes"
                     62: then
                     63:    echo "Fine, gcc is available"
                     64: else
                     65:    cat <<'EOF'
1.16      anton      66: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
                     67: It does not work with other C compilers. Please install the GNU C compiler,
                     68: and try again (or search for a binary distribution for your platform).
1.15      pazsan     69: EOF
                     70:    exit 1
                     71: fi
1.9       pazsan     72: 
1.15      pazsan     73: AC_SUBST(CC)
1.9       pazsan     74: AC_SUBST(DEBUGFLAG)
1.7       anton      75: 
1.10      anton      76: dnl the following macro produces a warning with autoconf-2.1
                     77: AC_CHECK_SIZEOF(char *)
                     78: case "$ac_cv_sizeof_char_p" in
                     79:   2)
                     80:     wordsize=16
                     81:     ;;
                     82:   4)
                     83:     wordsize=32
                     84:     ;;
                     85:   8)
                     86:     wordsize=64
                     87:     ;;
                     88: esac
1.9       pazsan     89: 
1.40      pazsan     90: AC_CHECK_SIZEOF(char)
1.23      pazsan     91: AC_CHECK_SIZEOF(short)
                     92: AC_CHECK_SIZEOF(int)
                     93: AC_CHECK_SIZEOF(long)
                     94: AC_CHECK_SIZEOF(long long)
                     95: 
                     96: ac_cv_int_type_cell=none
                     97: case "$ac_cv_sizeof_char_p" in
1.40      pazsan     98:   $ac_cv_sizeof_int)
                     99:     ac_cv_int_type_cell=int
                    100:     ;;
1.23      pazsan    101:   $ac_cv_sizeof_short)
                    102:     ac_cv_int_type_cell=short
                    103:     ;;
1.40      pazsan    104:   $ac_cv_sizeof_char)
                    105:     ac_cv_int_type_cell=char
1.23      pazsan    106:     ;;
                    107:   $ac_cv_sizeof_long)
                    108:     ac_cv_int_type_cell=long
                    109:     ;;
                    110:   $ac_cv_sizeof_long_long)
                    111:     ac_cv_int_type_cell="long long"
                    112:     ;;
                    113: esac
1.22      pazsan    114: if test "$ac_cv_int_type_cell" != int; then
1.20      anton     115:        echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
                    116:        echo "Since you don't have a proper C on this machine, that's one more reason"
                    117:        echo "to use Forth;-)"
                    118: fi
1.23      pazsan    119: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
                    120: 
                    121: ac_cv_int_type_double_cell=none
                    122: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    123:   $ac_cv_sizeof_short)
                    124:     ac_cv_int_type_double_cell=short
                    125:     ;;
                    126:   $ac_cv_sizeof_int)
                    127:     ac_cv_int_type_double_cell=int
                    128:     ;;
                    129:   $ac_cv_sizeof_long)
                    130:     ac_cv_int_type_double_cell=long
                    131:     ;;
                    132:   $ac_cv_sizeof_long_long)
                    133:     ac_cv_int_type_double_cell="long long"
                    134:     ;;
                    135: esac
1.21      anton     136: if test "$ac_cv_int_type_double_cell" = none; then
1.20      anton     137:        echo "Emulating double-cell arithmetic. This may be slow."
                    138:        echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
1.23      pazsan    139:        echo 'long longs for your machine (the GCC manual states that they \"are twice as'
                    140:        echo "long as \`long int\'\")."
1.20      anton     141:        LIBOBJS="$LIBOBJS dblsub.o"
                    142:        AC_DEFINE(BUGGY_LONG_LONG)
1.23      pazsan    143: else
                    144:   AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
1.20      anton     145: fi
                    146: 
1.50      jwilke    147: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    148: OLDLDFLAGS=$LDFLAGS
                    149: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     150: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    151: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    152: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    153: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    154: AC_MSG_RESULT($ac_export_dynamic)
                    155: 
1.1       anton     156: #terminology is a bit unusual here: The host is the system on which
                    157: #gforth will run; the system on which configure will run is the `build'
                    158: AC_CANONICAL_HOST
                    159: case "$host_cpu" in
                    160:        hppa*)
1.34      anton     161:                machine=hppa
1.46      anton     162:                $srcdir/mkinstalldirs arch/hppa
1.38      anton     163:                LIBOBJS="$LIBOBJS ../arch/hppa/cache.o"
1.50      jwilke    164:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     165:                LIBS="$LIBS -L/lib/pa1.1/"
1.31      anton     166:                if test "${enable_direct_threaded+set}" = ""
                    167:                then
                    168:                        AC_DEFINE(DIRECT_THREADED)
                    169:                fi
1.1       anton     170:                ;;
                    171:        sparc*)
1.34      anton     172:                machine=sparc
1.1       anton     173:                ;;
1.31      anton     174:        i386)
1.34      anton     175:                machine=386
1.16      anton     176:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     177:                if test "${enable_direct_threaded+set}" = "" \
                    178:                        -a "${enable_indirect_threaded+set}" = ""
                    179:                then
1.34      anton     180:                        echo "Using direct threaded code on 386"
1.31      anton     181:                        AC_DEFINE(DIRECT_THREADED)
                    182:                fi
                    183:                ;;
                    184:        i486)
1.34      anton     185:                machine=386
1.31      anton     186:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    187:                if test "${enable_direct_threaded+set}" = "" \
                    188:                        -a "${enable_indirect_threaded+set}" = ""
                    189:                then
1.34      anton     190:                        echo "Using direct threaded code on 486"
1.31      anton     191:                        AC_DEFINE(DIRECT_THREADED)
                    192:                fi
                    193:                ;;
1.77      anton     194:        i*86)
1.34      anton     195:                machine=386
1.55      anton     196:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    197:                CFLAGS_1="$CFLAGS"
                    198:                CFLAGS="$CFLAGS -mpentium"
                    199:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.31      anton     200:                if test "${enable_direct_threaded+set}" = "" \
                    201:                        -a "${enable_indirect_threaded+set}" = ""
                    202:                then
1.77      anton     203:                        echo "Using indirect threaded code on IA32 CPUs with split L1 caches"
1.31      anton     204:                        AC_DEFINE(INDIRECT_THREADED)
                    205:                fi
1.1       anton     206:                ;;
1.72      anton     207:        ia64*)
                    208:                machine=ia64
                    209:                ;;
1.26      pazsan    210:         m68k)
1.34      anton     211:                machine=m68k
1.32      pazsan    212:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    213:                if test "$host_os" = "nextstep3"
                    214:                then
                    215:                        LIBOBJS="$LIBOBJS termios.o"
                    216:                fi
1.26      pazsan    217:                ;;
1.1       anton     218:        mips*)
1.34      anton     219:                machine=mips
1.7       anton     220:                #link text and data segment into the same 256M region!
1.49      anton     221:                AC_MSG_CHECKING([whether the linker accepts -T])
                    222:                OLDLDFLAGS=$LDFLAGS
                    223:                LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
                    224:                AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
                    225:                test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
                    226:                AC_MSG_RESULT($ac_link_mips_t)
                    227:                test $ac_link_mips_t = yes||(echo cannot link text and data into same 256M region, using indirect threading; AC_DEFINE(INDIRECT_THREADED))
1.37      anton     228:                AC_MSG_CHECKING([whether the linker accepts -D])
                    229:                OLDLDFLAGS=$LDFLAGS
1.49      anton     230:                LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
1.37      anton     231:                AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
1.49      anton     232:                test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
1.37      anton     233:                AC_MSG_RESULT($ac_link_mips_d)
1.1       anton     234:                ;;
1.9       pazsan    235:        alpha*)
1.34      anton     236:                machine=alpha
1.58      anton     237:                #full IEEE FP support for more uniformity across platforms:
                    238:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    239:                ;;
1.69      anton     240:        power*|rs6000)
1.34      anton     241:                machine=power
1.46      anton     242:                $srcdir/mkinstalldirs arch/power
1.36      anton     243:                AC_CHECK_FUNC(_sync_cache_range,true,LIBOBJS="$LIBOBJS ../arch/power/_sync_cache_range.o")
1.64      anton     244:                #link text segment into first 32MB
                    245:                AC_MSG_CHECKING([whether the linker accepts --script=arch/power/elf32ppc.x])
                    246:                OLDLDFLAGS=$LDFLAGS
                    247:                 #the -L../$srcdir helps when $srcdir is relative
                    248:                LDFLAGS="$LDFLAGS -L$srcdir -L../$srcdir -Xlinker --script=$srcdir/arch/power/elf32ppc.x"
                    249:                AC_TRY_LINK(,,ac_link_script=yes,ac_link_script=no)
                    250:                test $ac_link_script = yes||LDFLAGS=$OLDLDFLAGS
                    251:                AC_MSG_RESULT($ac_link_script)
1.65      anton     252:                AC_MSG_CHECKING([whether the code is in the first 32MB])
                    253:                AC_TRY_RUN([main(){label: exit(((unsigned long)&&label)>32000000UL);}],ac_code_under_32=yes,ac_code_under_32=no,ac_code_under_32=no)
                    254:                 AC_MSG_RESULT($ac_code_under_32)
1.70      anton     255:                test $ac_code_under_32 = yes||(AC_MSG_WARN([Using indirect threading]); AC_DEFINE(INDIRECT_THREADED))
1.31      anton     256:                ;;
1.1       anton     257:        *)
                    258:                echo "No direct threading support for $host_cpu, using indirect threading."
1.20      anton     259:                echo "Using a generic machine description."
1.1       anton     260:                echo "I'll assume that C floats and doubles are represented by IEEE single and"
                    261:                echo "double numbers. If this is not so, SF@ etc. will not work correctly."
1.16      anton     262:                echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
1.34      anton     263:                machine=generic
1.1       anton     264: esac
1.10      anton     265: AC_SUBST(host)
1.15      pazsan    266: AC_SUBST(ENGINE_FLAGS)
1.1       anton     267: 
1.66      anton     268: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     269: AC_SUBST(asm_fs)
                    270: 
1.66      anton     271: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     272: AC_SUBST(disasm_fs)
                    273: 
1.39      pazsan    274: case "$host_os" in
                    275:        *win32)
                    276:                EXE=".exe"
                    277:                ;;
                    278:        *)
                    279:                EXE=""
                    280:                ;;
                    281: esac
                    282: AC_SUBST(EXE)
                    283: 
1.1       anton     284: dnl Now a little support for DOS/DJGCC
1.30      pazsan    285: AC_SUBST(GFORTH_EXE)
                    286: GFORTH_EXE=""
1.48      anton     287: AC_SUBST(GFORTHFAST_EXE)
                    288: GFORTHFAST_EXE=""
1.30      pazsan    289: AC_SUBST(GFORTHDITC_EXE)
                    290: GFORTHDITC_EXE=""
1.1       anton     291: 
1.24      anton     292: PATHSEP=":"
                    293: AC_SUBST(PATHSEP)
                    294: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
1.27      anton     295: 
                    296: AC_SUBST(FORTHSIZES)
1.24      anton     297: 
1.79      pazsan    298: if test "$PEEPHOLE" = "yes"
                    299: then
                    300:    PEEPHOLEFLAG="true"
                    301:    AC_DEFINE(HAS_PEEPHOLE)
                    302: else
                    303:    PEEPHOLEFLAG="false"
                    304: fi
                    305: AC_SUBST(PEEPHOLEFLAG)
                    306: 
1.1       anton     307: dnl copy commands for systems that don't have links
1.29      pazsan    308: AC_SUBST(LINK_KERNL)
                    309: LINK_KERNL=""
1.1       anton     310: 
                    311: #if test $host_os=dos
                    312: #then
                    313: #  echo Configuring for DOS!!!
                    314: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    315: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     316: #fi
                    317: 
                    318: dnl the following macro produces a warning with autoconf-2.1
                    319: AC_C_BIGENDIAN
1.23      pazsan    320: AC_SUBST(KERNEL)
1.1       anton     321: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    322: if test $ac_cv_c_bigendian = yes; then
                    323:   bytesex=b
1.23      pazsan    324:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     325: else
                    326:   bytesex=l
1.23      pazsan    327:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     328: fi
                    329: 
                    330: dnl Checks for programs.
                    331: AC_PROG_LN_S
1.34      anton     332: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
1.1       anton     333: 
                    334: dnl Checks for library functions
1.2       anton     335: dnl This check is just for making later checks link with libm.
                    336: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    337: AC_CHECK_LIB(m,asin)
1.31      anton     338: AC_CHECK_LIB(dl,dlopen)
1.32      pazsan    339: if test "$host_os" != "nextstep3"
                    340: then
                    341:        AC_FUNC_MEMCMP
                    342: fi
1.25      pazsan    343: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.71      anton     344: AC_CHECK_FUNCS(dlopen sys_siglist getrusage)
1.19      anton     345: AC_DECL_SYS_SIGLIST
1.34      anton     346: AC_CHECK_FUNC(getopt_long,true,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
1.11      anton     347: AC_CHECK_FUNCS(rint expm1 log1p)
1.1       anton     348: AC_REPLACE_FUNCS(ecvt)
                    349: dnl No check for select, because our replacement is no good under
                    350: dnl anything but DOS
1.62      anton     351: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     352: AC_FUNC_FNMATCH
                    353: test $ac_cv_func_fnmatch_works = yes || LIBOBJS="$LIBOBJS fnmatch.o"
1.28      anton     354: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     355: AM_PATH_LISPDIR
1.1       anton     356: 
1.23      pazsan    357: kernel_fi=kernl${wordsize}${bytesex}.fi
                    358: AC_SUBST(kernel_fi)
1.50      jwilke    359: 
1.76      anton     360: #this breaks bindists
                    361: #dnl replace srource directory by absolute value
                    362: #if test $srcdir = "."; then srcdir=`pwd` 
                    363: #fi
1.8       anton     364: 
1.34      anton     365: AC_SUBST(machine)
                    366: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
1.31      anton     367: AC_OUTPUT([
                    368: Makefile
1.45      pazsan    369: Makedist
1.43      anton     370: gforthmi
1.80      anton     371: vmgen
1.79      pazsan    372: machpc.fs
1.35      anton     373: engine/Makefile
1.44      anton     374: doc/version.texi ],
                    375: echo timestamp > stamp-h
1.43      anton     376: chmod +x gforthmi
1.80      anton     377: chmod +x vmgen
1.44      anton     378: test -d kernel||mkdir kernel)
                    379: 

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