tracy/public/client/TracyCpuid.hpp

#ifndef __TRACYCPUID_HPP__
#define __TRACYCPUID_HPP__

// Prior to GCC 11 the cpuid.h header did not have any include guards and thus
// including it more than once would cause a compiler error due to symbol
// redefinitions. In order to support older GCC versions, we have to wrap this
// include between custom include guards to prevent this issue.
// See also https://github.com/wolfpld/tracy/issues/452

#include <cpuid.h>

#endif
Fix cpuid symbol redefinition on older GCC versions Since commit 940f32c1a892dd194c3c6d66bb3550149de919fc building the Tracy library on Linux using a GCC version < 11 would result in compile errors due to symbol redefinitions of __get_cpuid_max, __get_cpuid and __get_cpuid_count. This is because prior to GCC 11 the cpuid.h header file did not have any include guards and thus including this header more than once would produce the abovementioned errors. To work around this issue, including cpuid.h has been wrapped into a custom header file that itself uses include guards and thus shields cpuid.h from being included multiple times. Fixes #452 2022-08-31 15:59:46 +00:00			`#ifndef __TRACYCPUID_HPP__`
			`#define __TRACYCPUID_HPP__`

			`// Prior to GCC 11 the cpuid.h header did not have any include guards and thus`
			`// including it more than once would cause a compiler error due to symbol`
			`// redefinitions. In order to support older GCC versions, we have to wrap this`
			`// include between custom include guards to prevent this issue.`
			`// See also https://github.com/wolfpld/tracy/issues/452`

			`#include <cpuid.h>`

			`#endif`