From: Damjan Marion <damarion@cisco.com>
Date: Thu, 5 Nov 2020 16:55:53 +0000 (+0100)
Subject: build: run garbage collection while linking plugins
X-Git-Tag: v21.06-rc0~220
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=066cd812374460e5ca8be9a88f494fe3f5bf911e;p=vpp.git

build: run garbage collection while linking plugins

Ask linker to remove symbols which are not referenced or exported.

Type: improvement
Change-Id: Iec01fda7ec5b14bab8f36d25c2652bd6fe619961
Signed-off-by: Damjan Marion <damarion@cisco.com>
---

diff --git a/src/cmake/plugin.cmake b/src/cmake/plugin.cmake
index 516588c7b8b..2aae89510c1 100644
--- a/src/cmake/plugin.cmake
+++ b/src/cmake/plugin.cmake
@@ -46,6 +46,9 @@ macro(add_vpp_plugin name)
   add_library(${plugin_name} SHARED ${PLUGIN_SOURCES} ${api_includes})
   set_target_properties(${plugin_name} PROPERTIES NO_SONAME 1)
   target_compile_options(${plugin_name} PRIVATE "-fvisibility=hidden")
+  target_compile_options (${plugin_name} PRIVATE "-ffunction-sections")
+  target_compile_options (${plugin_name} PRIVATE "-fdata-sections")
+  target_link_libraries (${plugin_name} "-Wl,--gc-sections")
   set(deps "")
   if(PLUGIN_API_FILES)
     list(APPEND deps ${plugin_name}_api_headers)