configure.ac: Do not set PREFIX_INCLUDE_DIR if $prefix is NONE.

gcc/

2006-11-08  Carlos O'Donell  <carlos@codesourcery.com>

	* configure.ac: Do not set PREFIX_INCLUDE_DIR if $prefix is NONE.
	* configure: Regenerate.

From-SVN: r118588

gcc/ChangeLog

+2006-11-08  Carlos O'Donell  <carlos@codesourcery.com>
+
+	* configure.ac: Do not set PREFIX_INCLUDE_DIR if $prefix is NONE.
+	* configure: Regenerate.
+
 2006-11-08  Dorit Nuzman  <dorit@il.ibm.com>
 
 	* tree-vect-analyze.c (vect_mark_relevant, vect_stmt_relevant_p): Take 

gcc/configure

@@ -16176,7 +16176,8 @@ _ACEOF
 fi
 
 if test x$with_sysroot = x && test x$host = x$target \
-   && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
+   && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
+   && test "$prefix" != "NONE"; then
 
 cat >>confdefs.h <<_ACEOF
 #define PREFIX_INCLUDE_DIR "$prefix/include"

gcc/configure.ac

@@ -3285,7 +3285,8 @@ if test x"$gcc_cv_ld_sysroot" = xyes; then
 fi	  
 
 if test x$with_sysroot = x && test x$host = x$target \
-   && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
+   && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
+   && test "$prefix" != "NONE"; then
   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
 [Define to PREFIX/include if cpp should also search that directory.])
 fi