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Detect cxx_constexpr support when compiling with clang.

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This commit is contained in:
Rasmus Munk Larsen 2016-04-27 14:33:51 -07:00
parent 318e65e0ae
commit 1a325ef71c
1 changed files with 7 additions and 7 deletions
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4
Eigen/src/Core/util/Macros.h
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@ -371,10 +371,10 @@
// Does the compiler support const expressions?
#ifdef __CUDACC__
// Const expressions are supported provided that c++11 is enabled and we're using either clang or nvcc 7.5 or above
#if __cplusplus > 199711L && defined(__CUDACC_VER__) && (defined(__clang__) || __CUDACC_VER__ >= 70500)
#if __cplusplus > 199711L && defined(__CUDACC_VER__) && (EIGEN_COMP_CLANG || __CUDACC_VER__ >= 70500)
#define EIGEN_HAS_CONSTEXPR 1
#endif
#elif (defined(__cplusplus) && __cplusplus >= 201402L) || \
#elif __has_feature(cxx_constexpr) || (defined(__cplusplus) && __cplusplus >= 201402L) || \
EIGEN_GNUC_AT_LEAST(4,8)
#define EIGEN_HAS_CONSTEXPR 1
#endif