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Header <execution> may not be available if it depends on Intel's TBB.

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jzmaddock
2020-07-29 18:57:56 +01:00
parent 03e99668f6
commit d0f983f942
1 changed files with 8 additions and 0 deletions
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8
include/boost/config/stdlib/libstdcpp3.hpp
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@ -319,6 +319,14 @@ extern "C" char *gets (char *__s);
#elif __cplusplus <= 201103
# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
#endif
//
// <execution> has a dependency to Intel's thread building blocks:
// unless these are installed seperately, including <execution> leads
// to inscrutable errors inside libstdc++'s own headers.
//
#if !__has_include(<execution>) || (!__has_include(<tbb/blocked_range.h>) && !defined(_GLIBCXX_USE_TBB_PAR_BACKEND))
#define BOOST_NO_CXX17_HDR_EXECUTION
#endif
#elif __cplusplus < 201402 || (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
#endif