@node ax_cxx_have_reference_wrapper @unnumberedsec ax_cxx_have_reference_wrapper @majorheading Synopsis @smallexample AX_CXX_HAVE_REFERENCE_WRAPPER() @end smallexample @majorheading Description This macro checks if std::reference_wrapper, added in C++11, is defined in the header. If it is, define the ax_cv_cxx_have_reference_wrapper environment variable to "yes" and define HAVE_CXX_REFERENCE_WRAPPER. @majorheading Source Code Download the @uref{http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=m4/ax_cxx_have_reference_wrapper.m4,latest version of @file{ax_cxx_have_reference_wrapper.m4}} or browse @uref{http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=history;f=m4/ax_cxx_have_reference_wrapper.m4,the macro's revision history}. @majorheading License @w{Copyright @copyright{} 2014 Enrico M. Crisostomo @email{enrico.m.crisostomo@@gmail.com}} 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.