| # Check for hash_map extension. This is from |
| # http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_map.html |
| AC_DEFUN([AC_CXX_HAVE_STD_EXT_HASH_MAP], |
| [AC_CACHE_CHECK([whether the compiler has <ext/hash_map> defining template class std::hash_map], |
| ac_cv_cxx_have_std_ext_hash_map, |
| [AC_REQUIRE([AC_CXX_NAMESPACES]) |
| AC_LANG_PUSH([C++]) |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <ext/hash_map> |
| #ifdef HAVE_NAMESPACES |
| using namespace std; |
| #endif]], [[hash_map<int, int> t;]])],[ac_cv_cxx_have_std_ext_hash_map=yes],[ac_cv_cxx_have_std_ext_hash_map=no]) |
| AC_LANG_POP([C++])]) |
| if test "$ac_cv_cxx_have_std_ext_hash_map" = yes |
| then |
| AC_DEFINE(HAVE_STD_EXT_HASH_MAP,1,[Have ext/hash_map>]) |
| else |
| AC_DEFINE(HAVE_STD_EXT_HASH_MAP,0,[Does not have ext/hash_map>]) |
| fi |
| ]) |
| |
| AC_DEFUN([AC_CXX_HAVE_GNU_EXT_HASH_MAP], |
| [AC_CACHE_CHECK([whether the compiler has <ext/hash_map> defining template class __gnu_cxx::hash_map], |
| ac_cv_cxx_have_gnu_ext_hash_map, |
| [AC_REQUIRE([AC_CXX_NAMESPACES]) |
| AC_LANG_PUSH([C++]) |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <ext/hash_map> |
| #ifdef HAVE_NAMESPACES |
| using namespace __gnu_cxx; |
| #endif]], [[hash_map<int,int> t; ]])],[ac_cv_cxx_have_gnu_ext_hash_map=yes],[ac_cv_cxx_have_gnu_ext_hash_map=no]) |
| AC_LANG_POP([C++])]) |
| if test "$ac_cv_cxx_have_gnu_ext_hash_map" = yes |
| then |
| AC_DEFINE(HAVE_GNU_EXT_HASH_MAP,1,[Have ext/hash_map]) |
| else |
| AC_DEFINE(HAVE_GNU_EXT_HASH_MAP,0,[Does not have ext/hash_map]) |
| fi |
| ]) |
| |
| AC_DEFUN([AC_CXX_HAVE_GLOBAL_HASH_MAP], |
| [AC_CACHE_CHECK([whether the compiler has <hash_map> defining template class ::hash_map], |
| ac_cv_cxx_have_global_hash_map, |
| [AC_REQUIRE([AC_CXX_NAMESPACES]) |
| AC_LANG_PUSH([C++]) |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <hash_map>]], [[hash_map<int,int> t; ]])],[ac_cv_cxx_have_global_hash_map=yes],[ac_cv_cxx_have_global_hash_map=no]) |
| AC_LANG_POP([C++])]) |
| if test "$ac_cv_cxx_have_global_hash_map" = yes |
| then |
| AC_DEFINE(HAVE_GLOBAL_HASH_MAP,1,[Have <hash_map>]) |
| else |
| AC_DEFINE(HAVE_GLOBAL_HASH_MAP,0,[Does not have <hash_map>]) |
| fi |
| ]) |
| |
| AC_DEFUN([AC_CXX_HAVE_HASH_MAP], |
| [AC_CXX_HAVE_STD_EXT_HASH_MAP |
| AC_CXX_HAVE_GNU_EXT_HASH_MAP |
| AC_CXX_HAVE_GLOBAL_HASH_MAP]) |
| |
| |