build: use -ffunction-sections and --gc-sections

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 22042e18470bebb40793cab54390699d9f62dfaa..ef1a089ab796a7aae85d4dc7eb5bc9c5f9dbd2cb 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,9 +1,9 @@
 cmake_minimum_required(VERSION 2.6)
 
 PROJECT(jsonpath C)
-ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -Wmissing-declarations)
+ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -Wmissing-declarations -ffunction-sections)
 
-SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
+SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "-Wl,--gc-sections")
 
 IF(APPLE)
   INCLUDE_DIRECTORIES(/opt/local/include)