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63 lines
2.0 KiB
Plaintext
63 lines
2.0 KiB
Plaintext
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# Check for hash_map extension. This is from
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# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_map.html
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AC_DEFUN([AC_CXX_HAVE_STD_EXT_HASH_MAP],
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[AC_CACHE_CHECK([whether the compiler has <ext/hash_map> defining template class std::hash_map],
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ac_cv_cxx_have_std_ext_hash_map,
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[AC_REQUIRE([AC_CXX_NAMESPACES])
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <ext/hash_map>
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#ifdef HAVE_NAMESPACES
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using namespace std;
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#endif],[hash_map<int, int> t;],
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[ac_cv_cxx_have_std_ext_hash_map=yes], [ac_cv_cxx_have_std_ext_hash_map=no])
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AC_LANG_RESTORE])
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HAVE_STD_EXT_HASH_MAP=0
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if test "$ac_cv_cxx_have_std_ext_hash_map" = yes
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then
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HAVE_STD_EXT_HASH_MAP=1
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fi
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AC_SUBST(HAVE_STD_EXT_HASH_MAP)])
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AC_DEFUN([AC_CXX_HAVE_GNU_EXT_HASH_MAP],
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[AC_CACHE_CHECK([whether the compiler has <ext/hash_map> defining template class __gnu_cxx::hash_map],
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ac_cv_cxx_have_gnu_ext_hash_map,
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[AC_REQUIRE([AC_CXX_NAMESPACES])
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <ext/hash_map>
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#ifdef HAVE_NAMESPACES
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using namespace __gnu_cxx;
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#endif],[hash_map<int,int> t; ],
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[ac_cv_cxx_have_gnu_ext_hash_map=yes],[ac_cv_cxx_have_gnu_ext_hash_map=no])
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AC_LANG_RESTORE])
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HAVE_GNU_EXT_HASH_MAP=0
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if test "$ac_cv_cxx_have_gnu_ext_hash_map" = yes
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then
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HAVE_GNU_EXT_HASH_MAP=1
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fi
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AC_SUBST(HAVE_GNU_EXT_HASH_MAP)])
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AC_DEFUN([AC_CXX_HAVE_GLOBAL_HASH_MAP],
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[AC_CACHE_CHECK([whether the compiler has <hash_map> defining template class ::hash_map],
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ac_cv_cxx_have_global_hash_map,
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[AC_REQUIRE([AC_CXX_NAMESPACES])
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <hash_map>],[hash_map<int,int> t; ],
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[ac_cv_cxx_have_global_hash_map=yes], [ac_cv_cxx_have_global_hash_map=no])
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AC_LANG_RESTORE])
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HAVE_GLOBAL_HASH_MAP=0
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if test "$ac_cv_cxx_have_global_hash_map" = yes
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then
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HAVE_GLOBAL_HASH_MAP=1
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fi
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AC_SUBST(HAVE_GLOBAL_HASH_MAP)])
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AC_DEFUN([AC_CXX_HAVE_HASH_MAP],
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[AC_CXX_HAVE_STD_EXT_HASH_MAP
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AC_CXX_HAVE_GNU_EXT_HASH_MAP
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AC_CXX_HAVE_GLOBAL_HASH_MAP])
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