build: Pass missed strip tool via config.site

depends/config.site.in

@@ -115,6 +115,11 @@ if test -n "@NM@"; then
   ac_cv_path_ac_pt_NM="${NM}"
 fi
 
+if test -n "@STRIP@"; then
+  STRIP="@STRIP@"
+  ac_cv_path_ac_pt_STRIP="${STRIP}"
+fi
+
 if test -n "@debug@"; then
   enable_reduce_exports=no
 fi