ac_cxx_member_templates_outside_class

Synopsis

AC_CXX_MEMBER_TEMPLATES_OUTSIDE_CLASS

Version

2004-02-04     0.5.65   :   Cxx

Author

Luc Maisonobe <luc@spaceroots.org>
license: AllPermissive

Description

If the compiler supports member templates outside the class declaration, define HAVE_MEMBER_TEMPLATES_OUTSIDE_CLASS.

M4 Source Code

AC_DEFUN([AC_CXX_MEMBER_TEMPLATES_OUTSIDE_CLASS],
[AC_CACHE_CHECK(whether the compiler supports member templates outside the class declaration,
ac_cv_cxx_member_templates_outside_class,
[AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE([
template<class T, int N> class A
{ public :
  template<int N2> A<T,N> operator=(const A<T,N2>& z);
};
template<class T, int N> template<int N2>
A<T,N> A<T,N>::operator=(const A<T,N2>& z){ return A<T,N>(); }],[
A<double,4> x; A<double,7> y; x = y; return 0;],
 ac_cv_cxx_member_templates_outside_class=yes, ac_cv_cxx_member_templates_outside_class=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_member_templates_outside_class" = yes; then
  AC_DEFINE(HAVE_MEMBER_TEMPLATES_OUTSIDE_CLASS,,
            [define if the compiler supports member templates outside the class declaration])
fi
])