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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_cxx_templates.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CXX_TEMPLATES
#
# DESCRIPTION
#
# If the compiler supports basic templates, define HAVE_TEMPLATES.
#
# 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. This file is offered as-is, without any
# warranty.
#serial 8
AU_ALIAS([AC_CXX_TEMPLATES], [AX_CXX_TEMPLATES])
AC_DEFUN([AX_CXX_TEMPLATES],
[dnl
AC_CACHE_CHECK([whether the compiler supports basic templates],
[ax_cv_cxx_templates],
[AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE([dnl
AC_LANG_PROGRAM([
template<class T> class A {public:A(){};};
template<class T> void f(const A<T>& ){};
],
[A<double> d; A<int> i; f(d); f(i); return 0;])],
[ax_cv_cxx_templates=yes],
[ax_cv_cxx_templates=no])
AC_LANG_POP([C++])
])
AS_IF([test "X$ax_cv_cxx_templates" = "Xyes"],
[AC_DEFINE(HAVE_TEMPLATES,,[define if the compiler supports basic templates])])
])
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