Plugins (Build): Add opt-out option for performing unresolved symbol checks when linking SOs.

Author: kaixiong

libvisual-plugins/CMakeLists.txt

@@ -77,6 +77,9 @@ CHECK_FUNCTION_EXISTS(mremap HAVE_MREMAP)
 # Assembly
 #AM_PROG_AS
 
+# Resolve all external symbols when linking SOs.
+OPTION(ENABLE_SO_UNRESOLVED_SYMBOL_CHECKS "Enable resolution of external symbols when linking SOs" yes)
+
 # Internationalization
 SET(GETTEXT_PACKAGE "libvisual-plugins-${LV_PLUGINS_VERSION_SUFFIX}")
 OPTION(ENABLE_NLS "Enable internationalization" yes)

libvisual-plugins/cmake/LVBuildPlugin.cmake

@@ -52,9 +52,12 @@ FUNCTION(LV_BUILD_PLUGIN PLUGIN_NAME PLUGIN_TYPE)
     ${PARSE_ARGS_LINK_OPTIONS}
   )
 
-  SET_TARGET_PROPERTIES(${SO_NAME} PROPERTIES
-    LINK_FLAGS -Wl,--unresolved-symbols,ignore-in-shared-libs
-  )
+  IF(ENABLE_SO_UNRESOLVED_SYMBOL_CHECKS)
+    TARGET_LINK_OPTIONS(${SO_NAME}
+      PRIVATE
+      -Wl,--unresolved-symbols,ignore-in-shared-libs
+    )
+  ENDIF()
 
   TARGET_LINK_LIBRARIES(${SO_NAME}
     PRIVATE