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# ============================================================================
# http://autoconf-archive.cryp.to/ac_cxx_member_templates_outside_class.html
# ============================================================================
#
# SYNOPSIS
#
# AC_CXX_MEMBER_TEMPLATES_OUTSIDE_CLASS
#
# DESCRIPTION
#
# If the compiler supports member templates outside the class declaration,
# define HAVE_MEMBER_TEMPLATES_OUTSIDE_CLASS.
#
# LICENSE
#
# Copyright (c) 2008 Todd Veldhuizen
# Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved.
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
])
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