Annotation of gforth/configure.in, revision 1.46

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
                     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 "$GCC" = "yes"
                     60: then
                     61:    echo "Fine, gcc is available"
                     62: else
                     63:    cat <<'EOF'
1.16      anton      64: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
                     65: It does not work with other C compilers. Please install the GNU C compiler,
                     66: and try again (or search for a binary distribution for your platform).
1.15      pazsan     67: EOF
                     68:    exit 1
                     69: fi
1.9       pazsan     70: 
1.15      pazsan     71: AC_SUBST(CC)
1.9       pazsan     72: AC_SUBST(DEBUGFLAG)
1.7       anton      73: 
1.10      anton      74: dnl the following macro produces a warning with autoconf-2.1
                     75: AC_CHECK_SIZEOF(char *)
                     76: case "$ac_cv_sizeof_char_p" in
                     77:   2)
                     78:     wordsize=16
                     79:     ;;
                     80:   4)
                     81:     wordsize=32
                     82:     ;;
                     83:   8)
                     84:     wordsize=64
                     85:     ;;
                     86: esac
1.9       pazsan     87: 
1.40      pazsan     88: AC_CHECK_SIZEOF(char)
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
1.40      pazsan     96:   $ac_cv_sizeof_int)
                     97:     ac_cv_int_type_cell=int
                     98:     ;;
1.23      pazsan     99:   $ac_cv_sizeof_short)
                    100:     ac_cv_int_type_cell=short
                    101:     ;;
1.40      pazsan    102:   $ac_cv_sizeof_char)
                    103:     ac_cv_int_type_cell=char
1.23      pazsan    104:     ;;
                    105:   $ac_cv_sizeof_long)
                    106:     ac_cv_int_type_cell=long
                    107:     ;;
                    108:   $ac_cv_sizeof_long_long)
                    109:     ac_cv_int_type_cell="long long"
                    110:     ;;
                    111: esac
1.22      pazsan    112: if test "$ac_cv_int_type_cell" != int; then
1.20      anton     113:        echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
                    114:        echo "Since you don't have a proper C on this machine, that's one more reason"
                    115:        echo "to use Forth;-)"
                    116: fi
1.23      pazsan    117: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
                    118: 
                    119: ac_cv_int_type_double_cell=none
                    120: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    121:   $ac_cv_sizeof_short)
                    122:     ac_cv_int_type_double_cell=short
                    123:     ;;
                    124:   $ac_cv_sizeof_int)
                    125:     ac_cv_int_type_double_cell=int
                    126:     ;;
                    127:   $ac_cv_sizeof_long)
                    128:     ac_cv_int_type_double_cell=long
                    129:     ;;
                    130:   $ac_cv_sizeof_long_long)
                    131:     ac_cv_int_type_double_cell="long long"
                    132:     ;;
                    133: esac
1.21      anton     134: if test "$ac_cv_int_type_double_cell" = none; then
1.20      anton     135:        echo "Emulating double-cell arithmetic. This may be slow."
                    136:        echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
1.23      pazsan    137:        echo 'long longs for your machine (the GCC manual states that they \"are twice as'
                    138:        echo "long as \`long int\'\")."
1.20      anton     139:        LIBOBJS="$LIBOBJS dblsub.o"
                    140:        AC_DEFINE(BUGGY_LONG_LONG)
1.23      pazsan    141: else
                    142:   AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
1.20      anton     143: fi
                    144: 
1.1       anton     145: #terminology is a bit unusual here: The host is the system on which
                    146: #gforth will run; the system on which configure will run is the `build'
                    147: AC_CANONICAL_HOST
                    148: case "$host_cpu" in
                    149:        hppa*)
1.34      anton     150:                machine=hppa
1.46    ! anton     151:                $srcdir/mkinstalldirs arch/hppa
1.38      anton     152:                LIBOBJS="$LIBOBJS ../arch/hppa/cache.o"
1.6       pazsan    153:                LDFLAGS="-Xlinker -N"
                    154:                LIBS="-L/lib/pa1.1/"
1.31      anton     155:                if test "${enable_direct_threaded+set}" = ""
                    156:                then
                    157:                        AC_DEFINE(DIRECT_THREADED)
                    158:                fi
1.1       anton     159:                ;;
                    160:        sparc*)
1.34      anton     161:                machine=sparc
1.1       anton     162:                ;;
1.31      anton     163:        i386)
1.34      anton     164:                machine=386
1.16      anton     165:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     166:                if test "${enable_direct_threaded+set}" = "" \
                    167:                        -a "${enable_indirect_threaded+set}" = ""
                    168:                then
1.34      anton     169:                        echo "Using direct threaded code on 386"
1.31      anton     170:                        AC_DEFINE(DIRECT_THREADED)
                    171:                fi
                    172:                ;;
                    173:        i486)
1.34      anton     174:                machine=386
1.31      anton     175:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    176:                if test "${enable_direct_threaded+set}" = "" \
                    177:                        -a "${enable_indirect_threaded+set}" = ""
                    178:                then
1.34      anton     179:                        echo "Using direct threaded code on 486"
1.31      anton     180:                        AC_DEFINE(DIRECT_THREADED)
                    181:                fi
                    182:                ;;
                    183:        i586|i686)
1.34      anton     184:                machine=386
1.31      anton     185:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    186:                if test "${enable_direct_threaded+set}" = "" \
                    187:                        -a "${enable_indirect_threaded+set}" = ""
                    188:                then
1.34      anton     189:                        echo "Using indirect threaded code on Pentium and up"
1.31      anton     190:                        AC_DEFINE(INDIRECT_THREADED)
                    191:                fi
1.1       anton     192:                ;;
1.26      pazsan    193:         m68k)
1.34      anton     194:                machine=m68k
1.32      pazsan    195:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    196:                if test "$host_os" = "nextstep3"
                    197:                then
                    198:                        LIBOBJS="$LIBOBJS termios.o"
                    199:                fi
1.26      pazsan    200:                ;;
1.1       anton     201:        mips*)
1.34      anton     202:                machine=mips
1.7       anton     203:                #link text and data segment into the same 256M region!
1.37      anton     204:                AC_MSG_CHECKING([whether the linker accepts -D])
                    205:                OLDLDFLAGS=$LDFLAGS
                    206:                LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
                    207:                AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
                    208:                test $ac_link_mips_d = yes||LDFLAGS="$OLDLDFLAGS -Xlinker -T -Xlinker 10000000"
                    209:                AC_MSG_RESULT($ac_link_mips_d)
1.1       anton     210:                ;;
1.9       pazsan    211:        alpha*)
1.34      anton     212:                machine=alpha
1.9       pazsan    213:                ;;
1.31      anton     214:        power*)
1.34      anton     215:                machine=power
1.46    ! anton     216:                $srcdir/mkinstalldirs arch/power
1.36      anton     217:                AC_CHECK_FUNC(_sync_cache_range,true,LIBOBJS="$LIBOBJS ../arch/power/_sync_cache_range.o")
1.31      anton     218:                ;;
1.1       anton     219:        *)
                    220:                echo "No direct threading support for $host_cpu, using indirect threading."
1.20      anton     221:                echo "Using a generic machine description."
1.1       anton     222:                echo "I'll assume that C floats and doubles are represented by IEEE single and"
                    223:                echo "double numbers. If this is not so, SF@ etc. will not work correctly."
1.16      anton     224:                echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
1.34      anton     225:                machine=generic
1.1       anton     226: esac
1.10      anton     227: AC_SUBST(host)
1.15      pazsan    228: AC_SUBST(ENGINE_FLAGS)
1.1       anton     229: 
1.39      pazsan    230: case "$host_os" in
                    231:        *win32)
                    232:                EXE=".exe"
                    233:                ;;
                    234:        *)
                    235:                EXE=""
                    236:                ;;
                    237: esac
                    238: AC_SUBST(EXE)
                    239: 
1.1       anton     240: dnl Now a little support for DOS/DJGCC
1.30      pazsan    241: AC_SUBST(GFORTH_EXE)
                    242: GFORTH_EXE=""
                    243: AC_SUBST(GFORTHDITC_EXE)
                    244: GFORTHDITC_EXE=""
1.1       anton     245: 
1.24      anton     246: PATHSEP=":"
                    247: AC_SUBST(PATHSEP)
                    248: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
1.27      anton     249: 
                    250: AC_SUBST(FORTHSIZES)
1.24      anton     251: 
1.1       anton     252: dnl copy commands for systems that don't have links
1.29      pazsan    253: AC_SUBST(LINK_KERNL)
                    254: LINK_KERNL=""
1.1       anton     255: 
                    256: #if test $host_os=dos
                    257: #then
                    258: #  echo Configuring for DOS!!!
                    259: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    260: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     261: #fi
                    262: 
                    263: dnl the following macro produces a warning with autoconf-2.1
                    264: AC_C_BIGENDIAN
1.23      pazsan    265: AC_SUBST(KERNEL)
1.1       anton     266: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    267: if test $ac_cv_c_bigendian = yes; then
                    268:   bytesex=b
1.23      pazsan    269:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     270: else
                    271:   bytesex=l
1.23      pazsan    272:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     273: fi
                    274: 
                    275: dnl Checks for programs.
                    276: AC_PROG_LN_S
1.34      anton     277: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
1.1       anton     278: 
                    279: dnl Checks for library functions
1.2       anton     280: dnl This check is just for making later checks link with libm.
                    281: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    282: AC_CHECK_LIB(m,asin)
1.31      anton     283: AC_CHECK_LIB(dl,dlopen)
1.32      pazsan    284: if test "$host_os" != "nextstep3"
                    285: then
                    286:        AC_FUNC_MEMCMP
                    287: fi
1.25      pazsan    288: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.44      anton     289: AC_CHECK_FUNCS(dlopen sys_siglist)
1.19      anton     290: AC_DECL_SYS_SIGLIST
1.34      anton     291: AC_CHECK_FUNC(getopt_long,true,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
1.11      anton     292: AC_CHECK_FUNCS(rint expm1 log1p)
1.1       anton     293: AC_REPLACE_FUNCS(ecvt)
                    294: dnl No check for select, because our replacement is no good under
                    295: dnl anything but DOS
1.28      anton     296: AC_CHECK_HEADERS(sys/mman.h)
                    297: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     298: AM_PATH_LISPDIR
1.1       anton     299: 
1.23      pazsan    300: kernel_fi=kernl${wordsize}${bytesex}.fi
                    301: AC_SUBST(kernel_fi)
1.8       anton     302: 
1.34      anton     303: AC_SUBST(machine)
                    304: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
1.31      anton     305: AC_OUTPUT([
                    306: Makefile
1.45      pazsan    307: Makedist
1.43      anton     308: gforthmi
1.35      anton     309: engine/Makefile
1.44      anton     310: doc/version.texi ],
                    311: echo timestamp > stamp-h
1.43      anton     312: chmod +x gforthmi
1.44      anton     313: test -d kernel||mkdir kernel)
                    314: 

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