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-rw-r--r--src/physac.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/physac.h b/src/physac.h
index d3fdaca4..8c109935 100644
--- a/src/physac.h
+++ b/src/physac.h
@@ -253,6 +253,7 @@ PHYSACDEF void ClosePhysics(void);
int __stdcall QueryPerformanceCounter(unsigned long long int *lpPerformanceCount);
int __stdcall QueryPerformanceFrequency(unsigned long long int *lpFrequency);
#elif defined(__linux__) || defined(PLATFORM_WEB)
+ #define _POSIX_C_SOURCE 199309L // Required for CLOCK_MONOTONIC if compiled with c99 without gnu ext.
//#define _DEFAULT_SOURCE // Enables BSD function definitions and C99 POSIX compliance
#include <sys/time.h> // Required for: timespec
#include <time.h> // Required for: clock_gettime()