update CMakeLists.txt for face detection and alignment

Author: jiezhang-zz

FaceAlignment/CMakeLists.txt

@@ -11,6 +11,7 @@ option(BUILD_EXAMPLES  "Set to ON to build examples"  ON)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 message(STATUS "C++11 support has been enabled by default.")
 
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2")
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.1")
 

FaceDetection/CMakeLists.txt

@@ -7,6 +7,8 @@ option(BUILD_EXAMPLES  "Set to ON to build examples"  ON)
 option(USE_OPENMP      "Set to ON to build use openmp"  ON)
 option(USE_SSE         "Set to ON to build use SSE"  ON)
 
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2")
+
 # Use C++11
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)