--- gforth/configure.in	2003/01/27 21:28:48	1.107
+++ gforth/configure.in	2003/01/31 22:45:11	1.111
@@ -120,7 +120,7 @@ case "$host_cpu" in
 		machine=hppa
 		$srcdir/mkinstalldirs arch/hppa
 		AC_LIBOBJ(../arch/hppa/cache)
-		LDFLAGS="$LDFLAGS -Xlinker -N"
+		#LDFLAGS="$LDFLAGS -Xlinker -N"
 		LIBS="$LIBS -L/lib/pa1.1/"
 		;;
 	sparc*)
@@ -193,7 +193,6 @@ case "$host_cpu" in
 		AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
 esac
 AC_SUBST(host)
-AC_SUBST(ENGINE_FLAGS)
 
 dnl the following macro produces a warning with autoconf-2.1
 AC_CHECK_SIZEOF(char *)
@@ -282,11 +281,35 @@ test $ac_cv_sizeof_off_t -gt $ac_cv_size
 ac_small_off_t=$?
 AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
 
+ENGINE_FLAGS=
+AC_SUBST(ENGINE_FLAGS)
+
+# Try if GCC understands -fno-gcse
+
+AC_MSG_CHECKING([if $CC understands -fno-gcse])
+CFLAGS_1="$CFLAGS"
+CFLAGS="$CFLAGS -fno-gcse"
+AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
+CFLAGS="$CFLAGS_1"
+AC_MSG_RESULT($ac_nogcse)
+
+# Try if GCC understands -fno-strict-aliasing
+
+AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
+CFLAGS_1="$CFLAGS"
+CFLAGS="$CFLAGS -fno-strict-aliasing"
+AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
+CFLAGS="$CFLAGS_1"
+AC_MSG_RESULT($ac_nostrictaliasing)
+
 # Try if GCC understands -fno-cross-jump
 
+AC_MSG_CHECKING([if $CC understands -fno-cross-jump])
 CFLAGS_1="$CFLAGS"
 CFLAGS="$CFLAGS -fno-cross-jump"
-AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
+AC_TRY_COMPILE(,,ac_nocrossjump=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-cross-jump",ac_nocrossjump=no)
+CFLAGS="$CFLAGS_1"
+AC_MSG_RESULT($ac_nocrossjump)
 
 AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
 AC_SUBST(asm_fs)
@@ -296,7 +319,7 @@ AC_SUBST(disasm_fs)
 
 case "$host_os" in
 	*win32|cygwin)
-		DIRSEP="\\"
+		DIRSEP="\\\\"
 		;;
 	*darwin*)
 		#Darwin uses some funny preprocessor by default; eliminate it:
@@ -411,7 +434,7 @@ fi
 AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
 AC_FUNC_FSEEKO
 AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
-AC_CHECK_TYPES(stack_t)
+AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
 AC_DECL_SYS_SIGLIST
 AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
 AC_CHECK_FUNCS(expm1 log1p)