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# ===========================================================================
# http://autoconf-archive.cryp.to/ac_cxx_template_keyword_qualifier.html
# ===========================================================================
#
# SYNOPSIS
#
# AC_CXX_TEMPLATE_KEYWORD_QUALIFIER
#
# DESCRIPTION
#
# If the compiler supports use of the template keyword as a qualifier,
# define HAVE_TEMPLATE_KEYWORD_QUALIFIER.
#
# LICENSE
#
# Copyright (c) 2008 Todd Veldhuizen
# Copyright (c) 2008 Bernardo Innocenti
# 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_TEMPLATE_KEYWORD_QUALIFIER],
[AC_CACHE_CHECK(whether the compiler supports use of the template keyword as a qualifier,
ac_cv_cxx_template_keyword_qualifier,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([
class X
{
public:
template<int> void member() {}
template<int> static void static_member() {}
};
template<class T> void f(T* p)
{
p->template member<200>(); // OK: < starts template argument
T::template static_member<100>(); // OK: < starts explicit qualification
}
],[X x; f(&x); return 0;],
ac_cv_cxx_template_keyword_qualifier=yes, ac_cv_cxx_template_keyword_qualifier=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_template_keyword_qualifier" = yes; then
AC_DEFINE(HAVE_TEMPLATE_KEYWORD_QUALIFIER,,
[define if the compiler supports use of the template keyword as a qualifier])
fi
])
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