Build for NetBSD and include proper RPATH

CMakeLists.txt

@@ -66,6 +66,12 @@ if(${CMAKE_SYSTEM_NAME} MATCHES FreeBSD)
   link_directories(${CMAKE_INSTALL_PREFIX}/lib)
 endif()
 
+if(${CMAKE_SYSTEM_NAME} MATCHES NetBSD)
+  link_directories(/usr/pkg/lib)
+  link_directories(${CMAKE_INSTALL_PREFIX}/lib)
+  set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+endif()
+
 option(BUILD_TESTING "Build tests")
 option(BUILD_FUZZING "Build tests")
 option(LIBCLANG_PATH "Use custom path for libclang")