File:  [gforth] / gforth / configure.in
Revision 1.2: download - view: text, annotated - select for diffs
Wed Dec 14 16:15:27 1994 UTC (25 years ago) by anton
Branches: MAIN
CVS tags: HEAD
Fixed a few bugs in config.in
added USE_TOS and USE_FTOS to the machine.h files as appropriate

    1: dnl Process this file with autoconf to produce a configure script.
    2: AC_INIT(engine.c)
    3: 
    4: AC_ARG_ENABLE(force-reg,
    5: [  --enable-force-reg	  Use explicit register declarations if they appear in
    6: 			  the machine.h file. This can cause a good speedup,
    7: 			  but also incorrect code with some gcc versions on
    8: 			  some processors (default disabled).],
    9: 
   10: AC_DEFINE(FORCE_REG))
   11: dnl this is not quite according to the autoconf manual, it causes a replacement
   12: AC_ARG_ENABLE(direct-threaded,
   13: [  --enable-direct-threaded	Force direct threading. This may not work on
   14: 				some machines and may cause slowdown on others.
   15: 				(default processor-dependent)],
   16: AC_DEFINE(DIRECT_THREADED))
   17: AC_ARG_ENABLE(indirect-threaded,
   18: [  --enable-indirect-threaded	Force indirect threading. This can cause a
   19: 				slowdown on some machines.
   20: 				(default processor-dependent)],
   21: AC_DEFINE(INDIRECT_THREADED))
   22: 
   23: #terminology is a bit unusual here: The host is the system on which
   24: #gforth will run; the system on which configure will run is the `build'
   25: AC_CANONICAL_HOST
   26: case "$host_cpu" in
   27: 	hppa*)
   28: 		mach_h=hppa
   29: 		;;
   30: 	sparc*)
   31: 		mach_h=sparc
   32: 		;;
   33: 	i386|i486|i586)
   34: 		mach_h=386
   35: 		#!! direct/indirect threading switch
   36: 		#!! -m486 flag
   37: 		;;
   38: 	m68*)
   39: 		mach_h=m68k
   40: 		;;
   41: 	mips*)
   42: 		mach_h=mips
   43: 		#!! link text and data segment into the same 256M region!
   44: 		#!! does cacheflush work on OSs other than Ultrix?
   45: 		;;
   46: 	*)
   47: 		echo "No direct threading support for $host_cpu, using indirect threading."
   48: 		echo "Using a generic 32-bit machine description. It will only work if char * AND"
   49: 		echo "long values have 32 bits."
   50: 		echo "I'll assume that C floats and doubles are represented by IEEE single and"
   51: 		echo "double numbers. If this is not so, SF@ etc. will not work correctly."
   52: 		mach_h=32bit
   53: esac
   54: 
   55: dnl Now a little support for DOS/DJGCC
   56: AC_SUBST(MAKE_EXE)
   57: MAKE_EXE=""
   58: 
   59: dnl copy commands for systems that don't have links
   60: AC_SUBST(LINK_KERNL32L)
   61: LINK_KERNL32L=""
   62: AC_SUBST(LINK_KERNL32B)
   63: LINK_KERNL32B=""
   64: 
   65: #if test $host_os=dos
   66: #then
   67: #  echo Configuring for DOS!!!
   68: #  MAKE_EXE="coff2exe gforth"
   69: #  LINK_KERNL32L='$(CP) kernl32l.fi gforth.fi'
   70: #fi
   71: 
   72: dnl the following macro produces a warning with autoconf-2.1
   73: AC_C_BIGENDIAN
   74: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
   75: if test $ac_cv_c_bigendian = yes; then
   76:   bytesex=b
   77: else
   78:   bytesex=l
   79: fi
   80: 
   81: dnl Checks for programs.
   82: AC_PROG_LN_S
   83: AC_PROG_INSTALL
   84: 
   85: dnl Checks for library functions
   86: dnl This check is just for making later checks link with libm.
   87: dnl using sin here is no good idea since it is built-into gcc and typechecked
   88: AC_CHECK_LIB(m,asin)
   89: AC_FUNC_MEMCMP
   90: AC_REPLACE_FUNCS(memmove strtoul)
   91: AC_CHECK_FUNC(getopt_long,getop_long="",getopt_long="getopt.o getopt1.o")
   92: AC_SUBST(getopt_long)
   93: AC_CHECK_FUNCS(rint expm1 log1p)
   94: AC_REPLACE_FUNCS(ecvt)
   95: dnl No check for select, because our replacement is no good under
   96: dnl anything but DOS
   97: 
   98: dnl autoconf requires (implicitly) that AC_LINK_FILES is used only once
   99: AC_LINK_FILES(${mach_h}.h kernl32${bytesex}.fi,machine.h gforth.fi)
  100: AC_OUTPUT(Makefile)
  101: 

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