Tweaking compatibility

Author: lemire

CMakeLists.txt

@@ -10,6 +10,7 @@ project(FrameOfReference CXX C)
 set(PROJECT_URL "https://github.com/lemire/FrameOfReference")
 set(PROJECT_DESCRIPTION "C++ library to pack and unpack vectors of integers having a small range of values using a technique called Frame of Reference")
 
+set(CMAKE_CXX_STANDARD 11)
 
 
 # library target

src/test.cpp

@@ -90,7 +90,8 @@ class WallClockTimer {
 };
 
 #ifndef _WIN32
-
+#include <sys/time.h>
+#include <sys/resource.h>
 class CPUTimer {
 public:
 	// clock_t t1, t2;