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AC_DEFUN([AC_CXX_NAMESPACES],
[AC_CACHE_CHECK(whether the compiler implements namespaces,
ac_cv_cxx_namespaces,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
[using namespace Outer::Inner; return i;],
ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_namespaces" = yes; then
AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])
fi
])
AC_DEFUN([AC_CXX_GNUCXX_HASHMAP],[
AC_CACHE_CHECK(whether the compiler supports __gnu_cxx::hash_map,
ac_cv_cxx_gnucxx_hashmap,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <ext/hash_map>
using __gnu_cxx::hash_map;],
[],
ac_cv_cxx_gnucxx_hashmap=yes, ac_cv_cxx_gnucxx_hashmap=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_gnucxx_hashmap" = yes; then
AC_DEFINE(HAVE_GNUCXX_HASHMAP,,[define if the compiler supports __gnu_cxx::hash_map])
fi
])
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 "$ac_cv_cxx_have_ext_hash_map" = yes; then
AC_DEFINE(HAVE_EXT_HASH_MAP,,[define if the compiler has ext/hash_map])
fi
])
AC_DEFUN([AC_CXX_STLPORT_HASHMAP],[
AC_CACHE_CHECK(whether the compiler supports std::hash_map,
ac_cv_cxx_stlport_hashmap,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <hash_map>
using std::hash_map;],
[],
ac_cv_cxx_stlport_hashmap=yes, ac_cv_cxx_stlport_hashmap=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_stlport_hashmap" = yes; then
AC_DEFINE(HAVE_STLPORT_HASHMAP,,[define if the compiler supports std::hash_map])
fi
])
#################################################################################
# The below definitions for AC_TYPE_UINTMAX_T AND AC_TYPE_UNSIGNED_LONG_LONG_INT
# were taken from the Autoconf types.m4 file;
# they're included here since older distributions of autoconf don't
# have these macros defined.
#################################################################################
# AC_TYPE_UINTMAX_T
# -----------------
AC_DEFUN([AC_TYPE_UINTMAX_T],
[
AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
AC_CHECK_TYPE([uintmax_t],
[AC_DEFINE([HAVE_UINTMAX_T], 1,
[Define to 1 if the system has the type `uintmax_t'.])],
[test $ac_cv_type_unsigned_long_long_int = yes \
&& ac_type='unsigned long long int' \
|| ac_type='unsigned long int'
AC_DEFINE_UNQUOTED([uintmax_t], [$ac_type],
[Define to the widest unsigned integer type
if <stdint.h> and <inttypes.h> do not define.])])
])
# AC_TYPE_UNSIGNED_LONG_LONG_INT
# ------------------------------
AC_DEFUN([AC_TYPE_UNSIGNED_LONG_LONG_INT],
[
AC_CACHE_CHECK([for unsigned long long int],
[ac_cv_type_unsigned_long_long_int],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[unsigned long long int ull = 18446744073709551615ULL;
typedef int a[(18446744073709551615ULL <= (unsigned long long int) -1
? 1 : -1)];
int i = 63;]],
[[unsigned long long int ullmax = 18446744073709551615ull;
return (ull << 63 | ull >> 63 | ull << i | ull >> i
| ullmax / ull | ullmax % ull);]])],
[ac_cv_type_unsigned_long_long_int=yes],
[ac_cv_type_unsigned_long_long_int=no])])
if test $ac_cv_type_unsigned_long_long_int = yes; then
AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], 1,
[Define to 1 if the system has the type `unsigned long long int'.])
fi
])
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