File:  [gforth] / gforth / configure.in
Revision 1.8: download - view: text, annotated - select for diffs
Wed Jan 25 18:53:45 1995 UTC (24 years, 7 months ago) by anton
Branches: MAIN
CVS tags: HEAD
Configure now only generates the antidependences for the actual machines
Bug fixes and Bug reports

    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: AC_SUBST(GCCLDFLAGS)
   24: 
   25: #terminology is a bit unusual here: The host is the system on which
   26: #gforth will run; the system on which configure will run is the `build'
   27: AC_CANONICAL_HOST
   28: case "$host_cpu" in
   29: 	hppa*)
   30: 		mach_h=hppa
   31: 		LIBOBJS="cache.o"
   32: 		LDFLAGS="-Xlinker -N"
   33: 		LIBS="-L/lib/pa1.1/"
   34: 		;;
   35: 	sparc*)
   36: 		mach_h=sparc
   37: 		;;
   38: 	i386|i486|i586)
   39: 		mach_h=386
   40: 		#!! direct/indirect threading switch
   41: 		#!! -m486 flag
   42: 		;;
   43: 	m68*)
   44: 		mach_h=m68k
   45: 		;;
   46: 	mips*)
   47: 		mach_h=mips
   48: 		#link text and data segment into the same 256M region!
   49: 		GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
   50: 		#this works on Ultrix, but not on Irix
   51: 		#for now use indirect threading under Irix
   52: 		;;
   53: 	*)
   54: 		echo "No direct threading support for $host_cpu, using indirect threading."
   55: 		echo "Using a generic 32-bit machine description. It will only work if char * AND"
   56: 		echo "long values have 32 bits."
   57: 		echo "I'll assume that C floats and doubles are represented by IEEE single and"
   58: 		echo "double numbers. If this is not so, SF@ etc. will not work correctly."
   59: 		mach_h=32bit
   60: esac
   61: 
   62: dnl Now a little support for DOS/DJGCC
   63: AC_SUBST(MAKE_EXE)
   64: MAKE_EXE=""
   65: 
   66: dnl copy commands for systems that don't have links
   67: AC_SUBST(LINK_KERNL16L)
   68: LINK_KERNL16L=""
   69: AC_SUBST(LINK_KERNL16B)
   70: LINK_KERNL16B=""
   71: AC_SUBST(LINK_KERNL32L)
   72: LINK_KERNL32L=""
   73: AC_SUBST(LINK_KERNL32B)
   74: LINK_KERNL32B=""
   75: AC_SUBST(LINK_KERNL64L)
   76: LINK_KERNL64L=""
   77: AC_SUBST(LINK_KERNL64B)
   78: LINK_KERNL64B=""
   79: 
   80: #if test $host_os=dos
   81: #then
   82: #  echo Configuring for DOS!!!
   83: #  MAKE_EXE="coff2exe gforth"
   84: #  LINK_KERNL32L='$(CP) kernl32l.fi gforth.fi'
   85: #fi
   86: 
   87: dnl the following macro produces a warning with autoconf-2.1
   88: AC_C_BIGENDIAN
   89: AC_SUBST(KERNAL)
   90: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
   91: if test $ac_cv_c_bigendian = yes; then
   92:   bytesex=b
   93:   KERNAL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
   94: else
   95:   bytesex=l
   96:   KERNAL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
   97: fi
   98: 
   99: dnl Checks for programs.
  100: AC_PROG_LN_S
  101: AC_PROG_INSTALL
  102: 
  103: dnl Checks for library functions
  104: dnl This check is just for making later checks link with libm.
  105: dnl using sin here is no good idea since it is built-into gcc and typechecked
  106: AC_CHECK_LIB(m,asin)
  107: AC_FUNC_MEMCMP
  108: AC_REPLACE_FUNCS(memmove strtoul)
  109: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
  110: AC_SUBST(getopt_long)
  111: AC_CHECK_FUNCS(rint expm1 log1p pow10)
  112: AC_REPLACE_FUNCS(ecvt)
  113: dnl No check for select, because our replacement is no good under
  114: dnl anything but DOS
  115: 
  116: gforth_fi=kernl32${bytesex}.fi
  117: AC_SUBST(gforth_fi)
  118: 
  119: dnl autoconf requires (implicitly) that AC_LINK_FILES is used only once
  120: AC_LINK_FILES(${mach_h}.h $gforth_fi,machine.h gforth.fi)
  121: AC_OUTPUT(Makefile)
  122: 

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