| dnl $Id: ac_cxx_partial_specialization.m4,v 1.2 2004/04/23 23:41:52 opetzold Exp $ |
| dnl |
| dnl Check if the compiler supports partial template specialization, |
| dnl on support define HAVE_PARTIAL_SPECIALIZATION. |
| dnl |
| |
| AC_DEFUN([AC_CXX_PARTIAL_SPECIALIZATION], |
| [AC_CACHE_CHECK(whether the compiler supports partial specialization, |
| ac_cv_cxx_partial_specialization, |
| [AC_LANG_PUSH([C++]) |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ |
| template<class T, int N> class X { public : enum { e = 0 }; }; |
| template<int N> class X<double, N> { public : enum { e = 1 }; }; |
| template<class T> class X<T, 2> { public : enum { e = 2 }; }; |
| ]], [[return (X<int,3>::e == 0) && (X<double,3>::e == 1) && (X<float,2>::e == 2);]])],[ac_cv_cxx_partial_specialization=yes],[ac_cv_cxx_partial_specialization=no]) |
| AC_LANG_POP([C++]) |
| ]) |
| if test "$ac_cv_cxx_partial_specialization" = yes; then |
| AC_DEFINE(HAVE_PARTIAL_SPECIALIZATION,,[Define if the compiler supports partial specialization]) |
| fi |
| ]) |
