File:  [gforth] / gforth / configure.in
Revision 1.21: download - view: text, annotated - select for diffs
Mon Feb 19 18:57:25 1996 UTC (23 years, 9 months ago) by anton
Branches: MAIN
CVS tags: HEAD
a few bug fixes, doc changes

    1: dnl Process this file with autoconf to produce a configure script.
    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: 
   21: AC_INIT(engine.c)
   22: AC_CONFIG_HEADER(config.h)
   23: 
   24: AC_ARG_ENABLE(force-reg,
   25: [  --enable-force-reg	  Use explicit register declarations if they appear in
   26: 			  the machine.h file. This can cause a good speedup,
   27: 			  but also incorrect code with some gcc versions on
   28: 			  some processors (default disabled).],
   29: 
   30: AC_DEFINE(FORCE_REG))
   31: dnl this is not quite according to the autoconf manual, it causes a replacement
   32: AC_ARG_ENABLE(direct-threaded,
   33: [  --enable-direct-threaded	Force direct threading. This may not work on
   34: 				some machines and may cause slowdown on others.
   35: 				(default processor-dependent)],
   36: AC_DEFINE(DIRECT_THREADED))
   37: AC_ARG_ENABLE(indirect-threaded,
   38: [  --enable-indirect-threaded	Force indirect threading. This can cause a
   39: 				slowdown on some machines.
   40: 				(default processor-dependent)],
   41: AC_DEFINE(INDIRECT_THREADED))
   42: 
   43: AC_ARG_WITH(debug,
   44: [  --with-debug     specifies option -g to compile with debug info (default)
   45:    --without-debug  omits the -g switch and creates smaller images on
   46:                     machines where "strip" has problems with gcc style
   47:                     debugging informations.],
   48: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   49: 
   50: CFLAGS=$CFLAGS
   51: 
   52: AC_PROG_CC
   53: 
   54: if test "$GCC" = "yes"
   55: then
   56:    echo "Fine, gcc is available"
   57: else
   58:    cat <<'EOF'
   59: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
   60: It does not work with other C compilers. Please install the GNU C compiler,
   61: and try again (or search for a binary distribution for your platform).
   62: EOF
   63:    exit 1
   64: fi
   65: 
   66: AC_SUBST(CC)
   67: AC_SUBST(GCCLDFLAGS)
   68: AC_SUBST(DEBUGFLAG)
   69: 
   70: dnl the following macro produces a warning with autoconf-2.1
   71: AC_CHECK_SIZEOF(char *)
   72: case "$ac_cv_sizeof_char_p" in
   73:   2)
   74:     wordsize=16
   75:     ;;
   76:   4)
   77:     wordsize=32
   78:     ;;
   79:   8)
   80:     wordsize=64
   81:     ;;
   82: esac
   83: 
   84: AC_CHECK_INT_TYPE(sizeof(char *),cell,long)
   85: if test $ac_cv_int_type_cell != int; then
   86: 	echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
   87: 	echo "Since you don't have a proper C on this machine, that's one more reason"
   88: 	echo "to use Forth;-)"
   89: fi
   90: AC_CHECK_INT_TYPE(2*sizeof(char *),double cell,long long)
   91: if test "$ac_cv_int_type_double_cell" = none; then
   92: 	echo "Emulating double-cell arithmetic. This may be slow."
   93: 	echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
   94: 	echo 'long longs for your machine (the GCC manual states that they "are twice as'
   95: 	echo "long as \`long int'\")."
   96: 	LIBOBJS="$LIBOBJS dblsub.o"
   97: 	AC_DEFINE(BUGGY_LONG_LONG)
   98: fi
   99: 
  100: #terminology is a bit unusual here: The host is the system on which
  101: #gforth will run; the system on which configure will run is the `build'
  102: AC_CANONICAL_HOST
  103: case "$host_cpu" in
  104: 	hppa*)
  105: 		mach_h=hppa
  106: 		LIBOBJS="$LIBOBJS cache.o"
  107: 		LDFLAGS="-Xlinker -N"
  108: 		LIBS="-L/lib/pa1.1/"
  109: 		;;
  110: 	sparc*)
  111: 		mach_h=sparc
  112: 		;;
  113: 	i386|i486|i586)
  114: 		mach_h=386
  115: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  116: 		#!! direct/indirect threading switch
  117: 		#!! -m486 flag
  118: 		;;
  119: 	mips*)
  120: 		mach_h=mips
  121: 		#link text and data segment into the same 256M region!
  122: 		GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
  123: 		;;
  124: 	alpha*)
  125: 		mach_h=alpha
  126: 		;;
  127: 	*)
  128: 		echo "No direct threading support for $host_cpu, using indirect threading."
  129: 		echo "Using a generic machine description."
  130: 		echo "I'll assume that C floats and doubles are represented by IEEE single and"
  131: 		echo "double numbers. If this is not so, SF@ etc. will not work correctly."
  132: 		echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
  133: 		mach_h=32bit
  134: esac
  135: AC_SUBST(host)
  136: AC_SUBST(ENGINE_FLAGS)
  137: 
  138: dnl Now a little support for DOS/DJGCC
  139: AC_SUBST(MAKE_EXE)
  140: MAKE_EXE=""
  141: 
  142: dnl copy commands for systems that don't have links
  143: AC_SUBST(LINK_KERNL16L)
  144: LINK_KERNL16L=""
  145: AC_SUBST(LINK_KERNL16B)
  146: LINK_KERNL16B=""
  147: AC_SUBST(LINK_KERNL32L)
  148: LINK_KERNL32L=""
  149: AC_SUBST(LINK_KERNL32B)
  150: LINK_KERNL32B=""
  151: AC_SUBST(LINK_KERNL64L)
  152: LINK_KERNL64L=""
  153: AC_SUBST(LINK_KERNL64B)
  154: LINK_KERNL64B=""
  155: 
  156: #if test $host_os=dos
  157: #then
  158: #  echo Configuring for DOS!!!
  159: #  MAKE_EXE="coff2exe gforth"
  160: #  LINK_KERNL32L='$(CP) kernl32l.fi kernal.fi'
  161: #fi
  162: 
  163: dnl the following macro produces a warning with autoconf-2.1
  164: AC_C_BIGENDIAN
  165: AC_SUBST(KERNAL)
  166: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  167: if test $ac_cv_c_bigendian = yes; then
  168:   bytesex=b
  169:   KERNAL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  170: else
  171:   bytesex=l
  172:   KERNAL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  173: fi
  174: 
  175: dnl Checks for programs.
  176: AC_PROG_LN_S
  177: AC_PROG_INSTALL
  178: 
  179: dnl Checks for library functions
  180: dnl This check is just for making later checks link with libm.
  181: dnl using sin here is no good idea since it is built-into gcc and typechecked
  182: AC_CHECK_LIB(m,asin)
  183: AC_FUNC_MEMCMP
  184: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal)
  185: AC_CHECK_FUNCS(sys_siglist)
  186: AC_DECL_SYS_SIGLIST
  187: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
  188: AC_SUBST(getopt_long)
  189: AC_CHECK_FUNCS(rint expm1 log1p)
  190: AC_REPLACE_FUNCS(ecvt)
  191: dnl No check for select, because our replacement is no good under
  192: dnl anything but DOS
  193: 
  194: kernal_fi=kernl${wordsize}${bytesex}.fi
  195: AC_SUBST(kernal_fi)
  196: 
  197: AC_LINK_FILES(${mach_h}.h $kernal_fi,machine.h kernal.fi)
  198: AC_OUTPUT(Makefile,echo timestamp > stamp-h)
  199: 

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