--- gforth/configure.in	2003/09/14 15:06:28	1.136
+++ gforth/configure.in	2004/08/27 15:53:49	1.141
@@ -204,7 +204,7 @@ case "$host_cpu" in
 	power*|rs6000)
 		machine=power
 		$srcdir/mkinstalldirs arch/power
-		AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
+		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
 		#long long is broken on (at least) gcc-2.95.* for PPC
 		test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
 		;;
@@ -336,6 +336,14 @@ AC_TRY_COMPILE(,,ac_nocrossjumping=yes;E
 CFLAGS="$CFLAGS_1"
 AC_MSG_RESULT($ac_nocrossjumping)
 
+# Try if GCC understands -fno-reorder-blocks
+AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
+CFLAGS_1="$CFLAGS"
+CFLAGS="$CFLAGS -fno-reorder-blocks"
+AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
+CFLAGS="$CFLAGS_1"
+AC_MSG_RESULT($ac_noreorder_blocks)
+
 # 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))',)
@@ -354,6 +362,9 @@ case "$host_os" in
 	*win32|cygwin)
 		DIRSEP="\\\\"
 		PATHSEP=";"
+		#we want the builtins of command.com and its handling of .com files
+		#on some Windows versions "cmd.exe /c " is an alternative
+		DEFAULTSYSTEMPREFIX="command.com /c "
 		;;
 	*darwin*)
 		#Darwin uses some funny preprocessor by default; eliminate it:
@@ -361,17 +372,20 @@ case "$host_os" in
 		CFLAGS="$CFLAGS -no-cpp-precomp"
 		DIRSEP="/"
 		PATHSEP=":"
+		DEFAULTSYSTEMPREFIX=""
 		;;
 	*)
 		DIRSEP="/"
 		PATHSEP=":"
+		DEFAULTSYSTEMPREFIX=""
 		;;
 esac
 AC_SUBST(DIRSEP)
 AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
 AC_SUBST(PATHSEP)
 AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
-
+AC_SUBST(DEFAULTSYSTEMPREFIX)
+AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
 
 dnl Now a little support for DOS/DJGCC
 AC_SUBST(GFORTH_EXE)
@@ -492,7 +506,7 @@ AC_FUNC_FSEEKO
 AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
 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_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
 AC_CHECK_FUNCS(expm1 log1p)
 AC_REPLACE_FUNCS(rint ecvt)
 dnl No check for select, because our replacement is no good under