diff options
Diffstat (limited to 'include/llvm/ADT/hash_set.cmake')
-rw-r--r-- | include/llvm/ADT/hash_set.cmake | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/include/llvm/ADT/hash_set.cmake b/include/llvm/ADT/hash_set.cmake new file mode 100644 index 0000000000..5a2ffae68e --- /dev/null +++ b/include/llvm/ADT/hash_set.cmake @@ -0,0 +1,111 @@ +//===-- llvm/ADT/hash_set - "Portable" wrapper around hash_set --*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// vim:ft=cpp +// +// This file provides a wrapper around the mysterious <hash_set> header file +// that seems to move around between GCC releases into and out of namespaces at +// will. #including this header will cause hash_set to be available in the +// global namespace. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_ADT_HASH_SET +#define LLVM_ADT_HASH_SET + +// Compiler Support Matrix +// +// Version Namespace Header File +// 2.95.x :: hash_set +// 3.0.4 std ext/hash_set +// 3.1 __gnu_cxx ext/hash_set +// HP aCC6 std stdex/rw/hashset.h +// MS VC++ stdext hash_set + +#cmakedefine HAVE_GNU_EXT_HASH_SET +#cmakedefine HAVE_STD_EXT_HASH_SET +#cmakedefine HAVE_GLOBAL_HASH_SET +#cmakedefine HAVE_RW_STDEX_HASH_SET_H + +// GCC versions 3.1 and later put hash_set in <ext/hash_set> and in +// the __gnu_cxx namespace. +#if defined(HAVE_GNU_EXT_HASH_SET) +# include <ext/hash_set> +# ifndef HASH_NAMESPACE +# define HASH_NAMESPACE __gnu_cxx +# endif + +// GCC 3.0.x puts hash_set in <ext/hash_set> and in the std namespace. +#elif defined(HAVE_STD_EXT_HASH_SET) +# include <ext/hash_set> +# ifndef HASH_NAMESPACE +# define HASH_NAMESPACE std +# endif + +// Older compilers such as GCC before version 3.0 do not keep +// extensions in the `ext' directory, and ignore the `std' namespace. +#elif defined(HAVE_GLOBAL_HASH_SET) +# include <hash_set> +# ifndef HASH_NAMESPACE +# define HASH_NAMESPACE std +# endif + +// HP aCC doesn't include an SGI-like hash_set. For this platform (or +// any others using Rogue Wave Software's Tools.h++ library), we wrap +// around them in std:: +#elif defined(HAVE_RW_STDEX_HASH_SET_H) +# include <rw/stdex/hashset.h> +# ifndef HASH_NAMESPACE +# define HASH_NAMESPACE std +# endif + +// Support Microsoft VC++. +#elif defined(_MSC_VER) +# include <hash_set> +# ifndef HASH_NAMESPACE +# define HASH_NAMESPACE stdext +# endif + +// Give a warning if we couldn't find it, instead of (or in addition to) +// randomly doing something dumb. +#else +# warning "Autoconfiguration failed to find the hash_set header file." +#endif + +// we wrap Rogue Wave Tools.h++ rw_hashset into something SGI-looking, here: +#ifdef HAVE_RW_STDEX_HASH_SET_H +namespace HASH_NAMESPACE { + +/* +template <class DataType> struct hash { + unsigned int operator()(const unsigned int& x) const { + return x; + } +}; +*/ + +template <typename ValueType, + class _HashFcn = hash<ValueType>, + class _EqualKey = equal_to<ValueType>, + class _A = allocator <ValueType> > +class hash_set : + public rw_hashset<ValueType, class _HashFcn, class _EqualKey, class _A> { +}; + +} // end HASH_NAMESPACE; +#endif + +using HASH_NAMESPACE::hash_set; + +// Include vector because ext/hash_set includes stl_vector.h and leaves +// out specializations like stl_bvector.h, causing link conflicts. +#include <vector> + +#include "llvm/ADT/HashExtras.h" + +#endif |