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Merged in rmlarsen/eigen2 (pull request PR-183)

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Detect cxx_constexpr support when compiling with clang.
This commit is contained in:
Benoit Steiner 2016-04-27 15:19:54 -07:00
commit 2b917291d9
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? // Does the compiler support const expressions?
#ifdef __CUDACC__ #ifdef __CUDACC__
// Const expressions are supported provided that c++11 is enabled and we're using either clang or nvcc 7.5 or above // 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 #define EIGEN_HAS_CONSTEXPR 1
#endif #endif
#elif (defined(__cplusplus) && __cplusplus >= 201402L) || \ #elif __has_feature(cxx_relaxed_constexpr) || (defined(__cplusplus) && __cplusplus >= 201402L) || \
EIGEN_GNUC_AT_LEAST(4,8) EIGEN_GNUC_AT_LEAST(4,8)
#define EIGEN_HAS_CONSTEXPR 1 #define EIGEN_HAS_CONSTEXPR 1
#endif #endif