--- gcc/config/vxworksae.h
+++ gcc/config/vxworksae.h
@@ -23,9 +23,8 @@ along with GCC; see the file COPYING3.  If not see
 /* Most of the definitions below this point are versions of the
    vxworks.h definitions, without the -mrtp bits.  */
 
-/* The directory containing the VxWorks AE target headers.  */
-#define VXWORKSAE_TARGET_DIR \
-  "/home/tornado/vxworks-ae/latest/target"
+/* Resolve subdirectory of VxWorks AE target headers.  */
+#define VXWORKSAE_TARGET_DIR(SUBDIR) "%:getenv(WIND_BASE /target" SUBDIR ")"
 
 /* Include target/vThreads/h or target/h (depending on the compilation
    mode), and then target/val/h (in either mode).  The macros defined
@@ -35,10 +34,10 @@ along with GCC; see the file COPYING3.  If not see
 #define VXWORKS_ADDITIONAL_CPP_SPEC "					\
  %{!nostdinc:%{isystem*}}						\
  %{mvthreads:-DVTHREADS=1						\
-	 %{!nostdinc:-isystem " VXWORKSAE_TARGET_DIR "/vThreads/h}}	\
+	 %{!nostdinc:-isystem " VXWORKSAE_TARGET_DIR("/vThreads/h") "}}	\
  %{!mvthreads:-DAE653_BUILD=1						\
-	 %{!nostdinc:-isystem " VXWORKSAE_TARGET_DIR "/h}}		\
- %{!nostdinc:-isystem " VXWORKSAE_TARGET_DIR "/val/h}"
+	 %{!nostdinc:-isystem " VXWORKSAE_TARGET_DIR("/h") "}}		\
+ %{!nostdinc:-isystem " VXWORKSAE_TARGET_DIR("/val/h") "}"
 
 #undef VXWORKS_LIB_SPEC
 #define VXWORKS_LIB_SPEC ""