/usr/share/aclocal/ax_cxx_template_keyword_qualifier.m4 is in autoconf-archive 20140228-1.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# http://www.gnu.org/software/autoconf-archive/ax_cxx_template_keyword_qualifier.html
# =====================================================================================
#
# SYNOPSIS
#
# AX_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. This file is offered as-is, without any
# warranty.
#serial 6
AU_ALIAS([AC_CXX_TEMPLATE_KEYWORD_QUALIFIER], [AX_CXX_TEMPLATE_KEYWORD_QUALIFIER])
AC_DEFUN([AX_CXX_TEMPLATE_KEYWORD_QUALIFIER],
[AC_CACHE_CHECK(whether the compiler supports use of the template keyword as a qualifier,
ax_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;],
ax_cv_cxx_template_keyword_qualifier=yes, ax_cv_cxx_template_keyword_qualifier=no)
AC_LANG_RESTORE
])
if test "$ax_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
])
|