--- gcc-5.5.0.old/libmpx/mpxrt/mpxrt-utils.c
+++ gcc-5.5.0/libmpx/mpxrt/mpxrt-utils.c
@@ -66,6 +66,9 @@
 #define MPX_RT_BNDPRESERVE_DEFAULT 0
 #define MPX_RT_PRINT_SUMMARY "CHKP_RT_PRINT_SUMMARY"
 
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
 #define MAX_FILE_NAME PATH_MAX
 
 typedef struct env_var_s {