1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
##### http://autoconf-archive.cryp.to/ac_cxx_extern_template.html
#
# SYNOPSIS
#
# AC_CXX_EXTERN_TEMPLATE
#
# DESCRIPTION
#
# Test whether the C++ compiler supports "extern template".
#
# LAST MODIFICATION
#
# 2007-11-21 by Adam Piatyszek <ediap@users.sourceforge.net>
#
# COPYLEFT
#
# Copyright (c) 2005 Patrick Mauritz <oxygene@studentenbude.ath.cx>
#
# 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_EXTERN_TEMPLATE],
[AC_CACHE_CHECK([whether the compiler supports extern template],
[ac_cv_cxx_extern_template],
[AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[template <typename T> void foo(T);
extern template void foo<int>(int);]],
[])],
[ac_cv_cxx_extern_template=yes],
[ac_cv_cxx_extern_template=no])
AC_LANG_POP([C++])])
if test "$ac_cv_cxx_extern_template" = yes; then
AC_DEFINE([HAVE_EXTERN_TEMPLATE], [1],
[Define if the compiler supports extern template])
fi
])
|
