INCLUDE(CheckCCompilerFlag)
IF(UNIX)
-- SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall -Werror -Wconversion")
-+ SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall -Werror")
+- SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall -Werror -Wconversion -Wextra")
++ SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall -Werror -Wextra")
# No "-Wall -Werror" for C flags, to avoid third_party code break.
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
SET(PROJECT_RESOURCE_DIR share/${PRODUCT_NAME})