Annotation of gforth/configure.in, revision 1.83

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

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