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#ifndef FOUNDATION_SYSTEM_H
# define FOUNDATION_SYSTEM_H
#ifdef _WIN32
#define FOUNDATION_SYSTEM_WINDOWS
#define FOUNDATION_SYSTEM_API_NO_CLOCK
//define something for Windows (32-bit and 64-bit, this part is common)
#ifdef _WIN64
#define FOUNDATION_SYSTEM_WINDOWS_64
//define something for Windows (64-bit only)
#else
#define FOUNDATION_SYSTEM_WINDOWS_32
//define something for Windows (32-bit only)
#endif
#elif __APPLE__
#include "TargetConditionals.h"
#include "Availability.h"
#if TARGET_OS_MAC
#define FOUNDATION_SYSTEM_UNIX
#define FOUNDATION_SYSTEM_MACOS
#if !defined(__MAC_10_12) || __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_12
#define FOUNDATION_SYSTEM_API_NO_CLOCK
#endif
// Other kinds of Mac OS
#else
# error "foundation: system: Unknown Apple platform"
#endif
#elif __linux__
#define FOUNDATION_SYSTEM_UNIX
#define FOUNDATION_SYSTEM_LINUX
// linux
#elif defined(__FreeBSD__)
#define FOUNDATION_SYSTEM_UNIX
#define FOUNDATION_SYSTEM_BSD
#define FOUNDATION_SYSTEM_FREEBSD
// freeBSD
#elif defined(__NetBSD__)
#define FOUNDATION_SYSTEM_UNIX
#define FOUNDATION_SYSTEM_BSD
#define FOUNDATION_SYSTEM_NETBSD
// NetBSD
#elif defined(__OpenBSD__)
#define FOUNDATION_SYSTEM_UNIX
#define FOUNDATION_SYSTEM_BSD
#define FOUNDATION_SYSTEM_OPENBSD
// OpenBSD
#elif __unix__ // all unices not caught above
#define FOUNDATION_SYSTEM_UNIX
// Unix
#elif defined(_POSIX_VERSION)
#define FOUNDATION_SYSTEM_UNIX
// POSIX
#else
# error "foundation: system: Unknown compiler"
#endif
#endif
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