--- a/strace-4.6/defs.h
+++ b/strace-4.6/defs.h
@@ -34,8 +34,8 @@
 #define CDE_OPTIONS_VERSION_NUM "# cde.options v1"
 #define CDE_ROOT_NAME "cde-root"
 // pgbovine - these are both ABSOLUTE paths
-char* CDE_PACKAGE_DIR;
-char* CDE_ROOT_DIR;
+extern char* CDE_PACKAGE_DIR;
+extern char* CDE_ROOT_DIR;
 
 
 #ifdef HAVE_CONFIG_H
--- a/readelf-mini/dwarf.c
+++ b/readelf-mini/dwarf.c
@@ -61,7 +61,7 @@
 int do_debug_macinfo;
 int do_debug_str;
 int do_debug_loc;
-int do_wide;
+extern int do_wide;
 
 /* Values for do_debug_lines.  */
 #define FLAG_DEBUG_LINES_RAW	 1
