lede_packages/libs/libnatpmp/patches/001-install_declspec.patch

--- a/Makefile
+++ b/Makefile
@@ -56,7 +56,7 @@ else
 endif
 endif
 
-HEADERS = natpmp.h
+HEADERS = natpmp.h declspec.h
 
 EXECUTABLES = testgetgateway natpmpc-shared natpmpc-static