Annotation of gforth/configure.in, revision 1.35

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
                      3: #Copyright (C) 1995,1996 Free Software Foundation, Inc.
                      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
                     25: AM_INIT_AUTOMAKE(gforth,0.4.0)
                     26: AM_CONFIG_HEADER(engine/config.h)
                     27: AM_CYGWIN32
1.14      anton      28: 
1.1       anton      29: AC_ARG_ENABLE(force-reg,
                     30: [  --enable-force-reg    Use explicit register declarations if they appear in
                     31:                          the machine.h file. This can cause a good speedup,
                     32:                          but also incorrect code with some gcc versions on
                     33:                          some processors (default disabled).],
                     34: 
                     35: AC_DEFINE(FORCE_REG))
                     36: dnl this is not quite according to the autoconf manual, it causes a replacement
                     37: AC_ARG_ENABLE(direct-threaded,
                     38: [  --enable-direct-threaded    Force direct threading. This may not work on
                     39:                                some machines and may cause slowdown on others.
                     40:                                (default processor-dependent)],
                     41: AC_DEFINE(DIRECT_THREADED))
                     42: AC_ARG_ENABLE(indirect-threaded,
                     43: [  --enable-indirect-threaded  Force indirect threading. This can cause a
                     44:                                slowdown on some machines.
                     45:                                (default processor-dependent)],
                     46: AC_DEFINE(INDIRECT_THREADED))
                     47: 
1.9       pazsan     48: AC_ARG_WITH(debug,
1.10      anton      49: [  --with-debug     specifies option -g to compile with debug info (default)
1.27      anton      50:   --without-debug  omits the -g switch and creates smaller images on
                     51:                    machines where "strip" has problems with gcc style
                     52:                    debugging informations.],
1.9       pazsan     53: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
                     54: 
1.16      anton      55: CFLAGS=$CFLAGS
                     56: 
1.15      pazsan     57: AC_PROG_CC
                     58: 
                     59: if test "$GCC" = "yes"
                     60: then
                     61:    echo "Fine, gcc is available"
                     62: else
                     63:    cat <<'EOF'
1.16      anton      64: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
                     65: It does not work with other C compilers. Please install the GNU C compiler,
                     66: and try again (or search for a binary distribution for your platform).
1.15      pazsan     67: EOF
                     68:    exit 1
                     69: fi
1.9       pazsan     70: 
1.15      pazsan     71: AC_SUBST(CC)
1.7       anton      72: AC_SUBST(GCCLDFLAGS)
1.9       pazsan     73: AC_SUBST(DEBUGFLAG)
1.7       anton      74: 
1.10      anton      75: dnl the following macro produces a warning with autoconf-2.1
                     76: AC_CHECK_SIZEOF(char *)
                     77: case "$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: 
1.23      pazsan     89: AC_CHECK_SIZEOF(short)
                     90: AC_CHECK_SIZEOF(int)
                     91: AC_CHECK_SIZEOF(long)
                     92: AC_CHECK_SIZEOF(long long)
                     93: 
                     94: ac_cv_int_type_cell=none
                     95: case "$ac_cv_sizeof_char_p" in
                     96:   $ac_cv_sizeof_short)
                     97:     ac_cv_int_type_cell=short
                     98:     ;;
                     99:   $ac_cv_sizeof_int)
                    100:     ac_cv_int_type_cell=int
                    101:     ;;
                    102:   $ac_cv_sizeof_long)
                    103:     ac_cv_int_type_cell=long
                    104:     ;;
                    105:   $ac_cv_sizeof_long_long)
                    106:     ac_cv_int_type_cell="long long"
                    107:     ;;
                    108: esac
1.22      pazsan    109: if test "$ac_cv_int_type_cell" != int; then
1.20      anton     110:        echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
                    111:        echo "Since you don't have a proper C on this machine, that's one more reason"
                    112:        echo "to use Forth;-)"
                    113: fi
1.23      pazsan    114: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
                    115: 
                    116: ac_cv_int_type_double_cell=none
                    117: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    118:   $ac_cv_sizeof_short)
                    119:     ac_cv_int_type_double_cell=short
                    120:     ;;
                    121:   $ac_cv_sizeof_int)
                    122:     ac_cv_int_type_double_cell=int
                    123:     ;;
                    124:   $ac_cv_sizeof_long)
                    125:     ac_cv_int_type_double_cell=long
                    126:     ;;
                    127:   $ac_cv_sizeof_long_long)
                    128:     ac_cv_int_type_double_cell="long long"
                    129:     ;;
                    130: esac
1.21      anton     131: if test "$ac_cv_int_type_double_cell" = none; then
1.20      anton     132:        echo "Emulating double-cell arithmetic. This may be slow."
                    133:        echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
1.23      pazsan    134:        echo 'long longs for your machine (the GCC manual states that they \"are twice as'
                    135:        echo "long as \`long int\'\")."
1.20      anton     136:        LIBOBJS="$LIBOBJS dblsub.o"
                    137:        AC_DEFINE(BUGGY_LONG_LONG)
1.23      pazsan    138: else
                    139:   AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
1.20      anton     140: fi
                    141: 
1.1       anton     142: #terminology is a bit unusual here: The host is the system on which
                    143: #gforth will run; the system on which configure will run is the `build'
                    144: AC_CANONICAL_HOST
                    145: case "$host_cpu" in
                    146:        hppa*)
1.34      anton     147:                machine=hppa
                    148:                LIBOBJS="$LIBOBJS cache.o"
1.6       pazsan    149:                LDFLAGS="-Xlinker -N"
                    150:                LIBS="-L/lib/pa1.1/"
1.31      anton     151:                if test "${enable_direct_threaded+set}" = ""
                    152:                then
                    153:                        AC_DEFINE(DIRECT_THREADED)
                    154:                fi
1.1       anton     155:                ;;
                    156:        sparc*)
1.34      anton     157:                machine=sparc
1.1       anton     158:                ;;
1.31      anton     159:        i386)
1.34      anton     160:                machine=386
1.16      anton     161:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     162:                if test "${enable_direct_threaded+set}" = "" \
                    163:                        -a "${enable_indirect_threaded+set}" = ""
                    164:                then
1.34      anton     165:                        echo "Using direct threaded code on 386"
1.31      anton     166:                        AC_DEFINE(DIRECT_THREADED)
                    167:                fi
                    168:                ;;
                    169:        i486)
1.34      anton     170:                machine=386
1.31      anton     171:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    172:                if test "${enable_direct_threaded+set}" = "" \
                    173:                        -a "${enable_indirect_threaded+set}" = ""
                    174:                then
1.34      anton     175:                        echo "Using direct threaded code on 486"
1.31      anton     176:                        AC_DEFINE(DIRECT_THREADED)
                    177:                fi
                    178:                ;;
                    179:        i586|i686)
1.34      anton     180:                machine=386
1.31      anton     181:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    182:                if test "${enable_direct_threaded+set}" = "" \
                    183:                        -a "${enable_indirect_threaded+set}" = ""
                    184:                then
1.34      anton     185:                        echo "Using indirect threaded code on Pentium and up"
1.31      anton     186:                        AC_DEFINE(INDIRECT_THREADED)
                    187:                fi
1.1       anton     188:                ;;
1.26      pazsan    189:         m68k)
1.34      anton     190:                machine=m68k
1.32      pazsan    191:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    192:                if test "$host_os" = "nextstep3"
                    193:                then
                    194:                        LIBOBJS="$LIBOBJS termios.o"
                    195:                fi
1.26      pazsan    196:                ;;
1.1       anton     197:        mips*)
1.34      anton     198:                machine=mips
1.7       anton     199:                #link text and data segment into the same 256M region!
                    200:                GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
1.1       anton     201:                ;;
1.9       pazsan    202:        alpha*)
1.34      anton     203:                machine=alpha
1.9       pazsan    204:                ;;
1.31      anton     205:        power*)
1.34      anton     206:                machine=power
1.31      anton     207:                ;;
1.1       anton     208:        *)
                    209:                echo "No direct threading support for $host_cpu, using indirect threading."
1.20      anton     210:                echo "Using a generic machine description."
1.1       anton     211:                echo "I'll assume that C floats and doubles are represented by IEEE single and"
                    212:                echo "double numbers. If this is not so, SF@ etc. will not work correctly."
1.16      anton     213:                echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
1.34      anton     214:                machine=generic
1.1       anton     215: esac
1.10      anton     216: AC_SUBST(host)
1.15      pazsan    217: AC_SUBST(ENGINE_FLAGS)
1.1       anton     218: 
                    219: dnl Now a little support for DOS/DJGCC
1.30      pazsan    220: AC_SUBST(GFORTH_EXE)
                    221: GFORTH_EXE=""
                    222: AC_SUBST(GFORTHDITC_EXE)
                    223: GFORTHDITC_EXE=""
1.1       anton     224: 
1.24      anton     225: PATHSEP=":"
                    226: AC_SUBST(PATHSEP)
                    227: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
1.27      anton     228: 
                    229: AC_SUBST(FORTHSIZES)
1.24      anton     230: 
1.1       anton     231: dnl copy commands for systems that don't have links
1.29      pazsan    232: AC_SUBST(LINK_KERNL)
                    233: LINK_KERNL=""
1.1       anton     234: 
                    235: #if test $host_os=dos
                    236: #then
                    237: #  echo Configuring for DOS!!!
                    238: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    239: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     240: #fi
                    241: 
                    242: dnl the following macro produces a warning with autoconf-2.1
                    243: AC_C_BIGENDIAN
1.23      pazsan    244: AC_SUBST(KERNEL)
1.1       anton     245: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    246: if test $ac_cv_c_bigendian = yes; then
                    247:   bytesex=b
1.23      pazsan    248:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     249: else
                    250:   bytesex=l
1.23      pazsan    251:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     252: fi
                    253: 
                    254: dnl Checks for programs.
                    255: AC_PROG_LN_S
1.34      anton     256: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
1.1       anton     257: 
                    258: dnl Checks for library functions
1.2       anton     259: dnl This check is just for making later checks link with libm.
                    260: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    261: AC_CHECK_LIB(m,asin)
1.31      anton     262: AC_CHECK_FUNCS(dlopen)
                    263: AC_CHECK_LIB(dl,dlopen)
                    264: AC_CHECK_LIB(kernel32,GetModuleHandle)
1.32      pazsan    265: if test "$host_os" != "nextstep3"
                    266: then
                    267:        AC_FUNC_MEMCMP
                    268: fi
1.25      pazsan    269: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.17      anton     270: AC_CHECK_FUNCS(sys_siglist)
1.19      anton     271: AC_DECL_SYS_SIGLIST
1.34      anton     272: AC_CHECK_FUNC(getopt_long,true,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
1.11      anton     273: AC_CHECK_FUNCS(rint expm1 log1p)
1.1       anton     274: AC_REPLACE_FUNCS(ecvt)
                    275: dnl No check for select, because our replacement is no good under
                    276: dnl anything but DOS
1.28      anton     277: AC_CHECK_HEADERS(sys/mman.h)
                    278: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     279: AM_PATH_LISPDIR
1.1       anton     280: 
1.23      pazsan    281: kernel_fi=kernl${wordsize}${bytesex}.fi
                    282: AC_SUBST(kernel_fi)
1.8       anton     283: 
1.34      anton     284: AC_SUBST(machine)
                    285: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
1.31      anton     286: AC_OUTPUT([
                    287: Makefile
1.35    ! anton     288: engine/Makefile
        !           289: doc/version.texi ],echo timestamp > stamp-h)

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