--- gforth/configure.in	2007/04/22 20:06:25	1.184
+++ gforth/configure.in	2007/12/16 15:22:05	1.199
@@ -21,12 +21,12 @@ dnl Process this file with autoconf to p
 
 dnl We use some automake macros here,
 dnl but don't use automake for creating Makefile.in
-AC_INIT([gforth],[0.6.9-20070401],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
+AC_INIT([gforth],[0.6.9-20070604],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
 AC_PREREQ(2.54)
 #snapshots have numbers major.minor.release-YYYYMMDD
 #note that lexicographic ordering must be heeded.
 #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
-UPDATED="April 09, 2006"
+UPDATED="June 02, 2007"
 AC_SUBST(UPDATED)
 AC_CONFIG_HEADERS(engine/config.h)
 
@@ -86,19 +86,20 @@ dnl   --without-peephole	disables peepho
 dnl 			but slower images.],
 dnl PEEPHOLE="$withval")
 
+GCC_LD="\$(GCC)"
+EC_MODE="false"
+EC=""
+engine2="engine2.o"
+engine_fast2="engine-fast2.o"
+no_dynamic=""
+image_i=""
+signals_o="io.o signals.o"
+
 AC_ARG_WITH(ec,
 	AC_HELP_STRING([--with-ec=<arch>],
 			[  Build gforth for systems without OS.]),
 [if test "$withval" = "no"; then
   echo "defining hosted system"
-  EC_MODE="false"
-  EC=""
-  engine2="engine2.o"
-  engine_fast2="engine-fast2.o"
-  no_dynamic=""
-  image_i=""
-  signals_o="io.o signals.o"
-  GCC_LD="\$(GCC)"
 else
   echo "defining standalone system (${withval})"
   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
@@ -137,6 +138,7 @@ AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeo
 AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
 AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
 AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
+AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
 AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
 AC_ARG_VAR(asmcomment, [assembler comment start string])
 AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
@@ -164,6 +166,16 @@ AC_PROG_CC
 
 test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
 
+AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
+test x$condbranch_opt = x && 
+if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
+   condbranch_opt=0
+else
+   condbranch_opt=1
+fi
+AC_MSG_RESULT($condbranch_opt)
+AC_SUBST(condbranch_opt)
+
 AC_SUBST(CC)
 AC_SUBST(GCC_LD)
 AC_SUBST(DEBUGFLAG)
@@ -228,21 +240,32 @@ case "$host_cpu" in
 		;;
 	i386)
 		machine=386
-		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
+		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
 		;;
 	i486)
 		machine=386
-		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
+		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
 		;;
 	i*86)
 		machine=386
-		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
+		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
 		CFLAGS_1="$CFLAGS"
 		CFLAGS="$CFLAGS -march=pentium"
 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
 		;;
 	x86_64)
-		machine=amd64
+		case $CC
+		in
+		    *-m32*)
+		    	machine=386
+			CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
+			CFLAGS_1="$CFLAGS"
+			CFLAGS="$CFLAGS -march=athlon64"
+			;;
+		    *)
+		    	machine=amd64
+			;;
+		esac
 		;;
 	ia64*)
 		machine=ia64
@@ -564,16 +587,55 @@ AC_TRY_COMPILE(,,ac_noreorder_blocks=yes
 CFLAGS="$CFLAGS_1"
 AC_MSG_RESULT($ac_noreorder_blocks)
 
+# Try if GCC understands -falign-labels=1
+AC_MSG_CHECKING([if $CC understands -falign-labels=1])
+CFLAGS_1="$CFLAGS"
+CFLAGS="$CFLAGS -falign-labels=1"
+AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
+CFLAGS="$CFLAGS_1"
+AC_MSG_RESULT($ac_align_labels)
+
+# Try if GCC understands -falign-loops=1
+AC_MSG_CHECKING([if $CC understands -falign-loops=1])
+CFLAGS_1="$CFLAGS"
+CFLAGS="$CFLAGS -falign-loops=1"
+AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
+CFLAGS="$CFLAGS_1"
+AC_MSG_RESULT($ac_align_loops)
+
+# Try if GCC understands -falign-jumps=1
+AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
+CFLAGS_1="$CFLAGS"
+CFLAGS="$CFLAGS -falign-jumps=1"
+AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
+CFLAGS="$CFLAGS_1"
+AC_MSG_RESULT($ac_align_jumps)
+
 # Try if GCC understands __attribute__((unused))
 AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
 AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
 AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
 AC_MSG_RESULT($MAYBE_UNUSED)
 
-AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
+#try if m4 understands -s
+AC_MSG_CHECKING([how to invoke m4])
+if m4 -s /dev/null >/dev/null 2>&1; then
+ M4="m4 -s"
+else
+ M4=m4
+fi
+AC_SUBST(M4)
+AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
+AC_MSG_RESULT($M4)
+
+echo "machine='$machine'"
+
+dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
+AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
 AC_SUBST(asm_fs)
 
-AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
+dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
+AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
 AC_SUBST(disasm_fs)
 
 AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
@@ -733,10 +795,14 @@ AC_PROG_LN_S
 AC_PROG_INSTALL
 AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
 
+dnl MacOS X has a libtool that does something else
+AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
+
 dnl Checks for library functions
 dnl This check is just for making later checks link with libm.
 dnl using sin here is no good idea since it is built-into gcc and typechecked
 AC_CHECK_LIB(m,asin)
+AC_CHECK_LIB(ltdl,lt_dlinit)
 AC_CHECK_LIB(dl,dlopen)
 dnl check for libffi 2.x
 AC_CHECK_LIB(ffi,ffi_call)
@@ -768,7 +834,7 @@ then
 fi
 AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
 AC_FUNC_FSEEKO
-AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
+AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
 AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
 AC_DECL_SYS_SIGLIST
 AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
@@ -801,12 +867,15 @@ vmgen
 machpc.fs
 envos.fs
 engine/Makefile
+engine/libcc.h
 doc/version.texi
 build-ec ])
 AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
 chmod +x gforthmi
 chmod +x vmgen
 chmod +x build-ec
-test -d kernel||mkdir kernel]],[[]])
+test -d kernel||mkdir kernel
+$srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
+ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
 AC_OUTPUT