diff -ru -x '*~' gcc-4.8.3-orig/gcc/cppdefault.c gcc-4.8.3/gcc/cppdefault.c
--- gcc-4.8.3-orig/gcc/cppdefault.c	2013-01-10 21:38:27.000000000 +0100
+++ gcc-4.8.3/gcc/cppdefault.c	2014-08-18 16:20:32.893944536 +0200
@@ -35,6 +35,8 @@
 # undef CROSS_INCLUDE_DIR
 #endif
 
+#undef LOCAL_INCLUDE_DIR
+
 const struct default_include cpp_include_defaults[]
 #ifdef INCLUDE_DEFAULTS
 = INCLUDE_DEFAULTS;
diff -ru -x '*~' gcc-4.8.3-orig/gcc/gcc.c gcc-4.8.3/gcc/gcc.c
--- gcc-4.8.3-orig/gcc/gcc.c	2014-03-23 12:30:57.000000000 +0100
+++ gcc-4.8.3/gcc/gcc.c	2014-08-18 13:19:32.689201690 +0200
@@ -1162,10 +1162,10 @@
 /* Default prefixes to attach to command names.  */
 
 #ifndef STANDARD_STARTFILE_PREFIX_1
-#define STANDARD_STARTFILE_PREFIX_1 "/lib/"
+#define STANDARD_STARTFILE_PREFIX_1 ""
 #endif
 #ifndef STANDARD_STARTFILE_PREFIX_2
-#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
+#define STANDARD_STARTFILE_PREFIX_2 ""
 #endif
 
 #ifdef CROSS_DIRECTORY_STRUCTURE  /* Don't use these prefixes for a cross compiler.  */