enable -O2 for build option

Signed-off-by: Frank Li <[email protected]>

Author: nxpfrankli

libuuu/CMakeLists.txt

@@ -11,6 +11,7 @@ find_package(Threads)
 include_directories(${LIBUSB_INCLUDE_DIRS} include)
 
 set(CMAKE_CXX_FLAGS_DEBUG "-g -Wall -Wstrict-aliasing -Wextra")
+set(CMAKE_CXX_FLAGS "-O2")
 
 set(SOURCES
 	error.cpp

uuu/CMakeLists.txt

@@ -10,7 +10,7 @@ pkg_check_modules(LIBZ REQUIRED zlib)
 find_package(Threads)
 
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -O2")
 
 if (NOT APPLE)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libstdc++ -static-libgcc")