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AC_CXX_HAVE_EXT_HASH_MAP
Check if the compiler has ext/hash_map Eg:
#if defined(HAVE_EXT_HASH_MAP) #include <ext/hash_map> #else #if defined(HAVE_STL) #include <hash_map> #else # Can't find hash_map header ! #endif #endif
This file is Alain BARBET's AC_CXX_HAVE_EXT_HASH_SET 1.1 with s/set/map/g :)
Perceval ANICHINI <perceval.anichini@epita.fr>
2002-09-25
AC_DEFUN([AC_CXX_HAVE_EXT_HASH_MAP], [AC_CACHE_CHECK(whether the compiler has ext/hash_map, ac_cv_cxx_have_ext_hash_map, [AC_REQUIRE([AC_CXX_NAMESPACES]) AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include <ext/hash_map> #ifdef HAVE_NAMESPACES using namespace std; #endif],[hash_map<int, int> t; return 0;], ac_cv_cxx_have_ext_hash_map=yes, ac_cv_cxx_have_ext_hash_map=no) AC_LANG_RESTORE ]) if test "$ac_cv_cxx_have_ext_hash_map" = yes; then AC_DEFINE(HAVE_EXT_HASH_MAP,,[define if the compiler has ext/hash_map]) fi ])