| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | # Check for hash_set extension. This is modified from |
| 2 | # http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_set.html |
| 3 | AC_DEFUN([AC_CXX_HAVE_STD_EXT_HASH_SET], |
| 4 | [AC_CACHE_CHECK([whether the compiler has <ext/hash_set> defining template class std::hash_set], |
| 5 | ac_cv_cxx_have_std_ext_hash_set, |
| 6 | [AC_REQUIRE([AC_CXX_NAMESPACES]) |
| 7 | AC_LANG_PUSH([C++]) |
| 8 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <ext/hash_set> |
| 9 | #ifdef HAVE_NAMESPACES |
| 10 | using namespace std; |
| 11 | #endif]], [[hash_set<int> t; ]])],[ac_cv_cxx_have_std_ext_hash_set=yes],[ac_cv_cxx_have_std_ext_hash_set=no]) |
| 12 | AC_LANG_POP([C++])]) |
| 13 | if test "$ac_cv_cxx_have_std_ext_hash_set" = yes |
| 14 | then |
| 15 | AC_DEFINE(HAVE_STD_EXT_HASH_SET,1,[Have hash_set in std namespace]) |
| 16 | else |
| 17 | AC_DEFINE(HAVE_STD_EXT_HASH_SET,0,[Does not have hash_set in std namespace]) |
| 18 | fi |
| 19 | ]) |
| 20 | |
| 21 | AC_DEFUN([AC_CXX_HAVE_GNU_EXT_HASH_SET], |
| 22 | [AC_CACHE_CHECK( |
| 23 | [whether the compiler has <ext/hash_set> defining template class __gnu_cxx::hash_set], |
| 24 | ac_cv_cxx_have_gnu_ext_hash_set, |
| 25 | [AC_REQUIRE([AC_CXX_NAMESPACES]) |
| 26 | AC_LANG_PUSH([C++]) |
| 27 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <ext/hash_set> |
| 28 | #ifdef HAVE_NAMESPACES |
| 29 | using namespace __gnu_cxx; |
| 30 | #endif]], [[hash_set<int> t; ]])],[ac_cv_cxx_have_gnu_ext_hash_set=yes],[ac_cv_cxx_have_gnu_ext_hash_set=no]) |
| 31 | AC_LANG_POP([C++])]) |
| 32 | if test "$ac_cv_cxx_have_gnu_ext_hash_set" = yes |
| 33 | then |
| 34 | AC_DEFINE(HAVE_GNU_EXT_HASH_SET,1,[Have hash_set in gnu namespace]) |
| 35 | else |
| 36 | AC_DEFINE(HAVE_GNU_EXT_HASH_SET,0,[Does not have hash_set in gnu namespace]) |
| 37 | fi |
| 38 | ]) |
| 39 | |
| 40 | AC_DEFUN([AC_CXX_HAVE_GLOBAL_HASH_SET], |
| 41 | [AC_CACHE_CHECK([whether the compiler has <hash_set> defining template class ::hash_set], |
| 42 | ac_cv_cxx_have_global_hash_set, |
| 43 | [AC_REQUIRE([AC_CXX_NAMESPACES]) |
| 44 | AC_LANG_PUSH([C++]) |
| 45 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <hash_set>]], [[hash_set<int> t; return 0;]])],[ac_cv_cxx_have_global_hash_set=yes],[ac_cv_cxx_have_global_hash_set=no]) |
| 46 | AC_LANG_POP([C++])]) |
| 47 | if test "$ac_cv_cxx_have_global_hash_set" = yes |
| 48 | then |
| 49 | AC_DEFINE(HAVE_GLOBAL_HASH_SET,1,[Have hash_set in global namespace]) |
| 50 | else |
| 51 | AC_DEFINE(HAVE_GLOBAL_HASH_SET,0,[Does not have hash_set in global namespace]) |
| 52 | fi |
| 53 | ]) |
| 54 | |
| 55 | AC_DEFUN([AC_CXX_HAVE_HASH_SET], |
| 56 | [AC_CXX_HAVE_STD_EXT_HASH_SET |
| 57 | AC_CXX_HAVE_GNU_EXT_HASH_SET |
| 58 | AC_CXX_HAVE_GLOBAL_HASH_SET]) |
| 59 | |
| 60 | |