Check the presence of the C++ header dir. The native and cross GCC4 do have

different directory layouts and this way we can still use a native compiler
as a cross compiler since we don't make the decision based on whether we are
cross compiling or not.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29082 a95241bf-73f2-0310-859d-f6bbb57e9c96

configure

@@ -133,7 +133,14 @@ standard_gcc_settings()
 			haikuSharedLibStdCxx=`$HAIKU_CC -print-file-name=libstdc++.so`
 			haikuStaticLibSupCxx=`$HAIKU_CC -print-file-name=libsupc++.a`
 			haikuSharedLibSupCxx=`$HAIKU_CC -print-file-name=libsupc++.so`
-			local headers=$gccdir/../../../../$haikuGCCMachine/include/c++/$haikuGCCVersion
+
+			local headers
+			if [ -d $gccdir/../../../../$haikuGCCMachine/include/c++/$haikuGCCVersion ]; then
+				headers=$gccdir/../../../../$haikuGCCMachine/include/c++/$haikuGCCVersion
+			else
+				headers=$gccdir/../../../../include/c++/$haikuGCCVersion
+			fi
+
 			haikuCxxHeadersDir=$headers
 			for d in $haikuGCCMachine backward ext; do
 				# Note: We need the line break, otherwise the line might become