25 #ifndef _GLIBCXX_OS_DEFINES
26 #define _GLIBCXX_OS_DEFINES 1
31 #if __cplusplus >= 199711L
32 #define __CORRECT_ISO_CPP_MATH_H_PROTO
33 #define __CORRECT_ISO_CPP_STDLIB_H_PROTO
34 #define __CORRECT_ISO_CPP_STRING_H_PROTO
35 #define __CORRECT_ISO_CPP_WCHAR_H_PROTO
39 #ifndef CLOCK_MONOTONIC
40 #define CLOCK_MONOTONIC CLOCK_HIGHRES