summaryrefslogtreecommitdiff
path: root/m4/ac_cxx_full_specialization_syntax.m4
blob: b03b6d77e80d3b0bcc900e02ba6ba124505e7c78 (plain)
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
39
40
41
42
43
44
# ===============================================================================
#  http://www.nongnu.org/autoconf-archive/ac_cxx_full_specialization_syntax.html
# ===============================================================================
#
# OBSOLETE MACRO
#
#   Renamed to AX_CXX_FULL_SPECIALIZATION_SYNTAX
#
# SYNOPSIS
#
#   AC_CXX_FULL_SPECIALIZATION_SYNTAX
#
# DESCRIPTION
#
#   If the compiler recognizes the full specialization syntax, define
#   HAVE_FULL_SPECIALIZATION_SYNTAX.
#
# 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.

AU_ALIAS([AC_CXX_FULL_SPECIALIZATION_SYNTAX], [AX_CXX_FULL_SPECIALIZATION_SYNTAX])
AC_DEFUN([AC_CXX_FULL_SPECIALIZATION_SYNTAX],
[AC_CACHE_CHECK(whether the compiler recognizes the full specialization syntax,
ac_cv_cxx_full_specialization_syntax,
[AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE([
template<class T> class A        { public : int f () const { return 1; } };
template<>        class A<float> { public:  int f () const { return 0; } };],[
A<float> a; return a.f();],
 ac_cv_cxx_full_specialization_syntax=yes, ac_cv_cxx_full_specialization_syntax=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_full_specialization_syntax" = yes; then
  AC_DEFINE(HAVE_FULL_SPECIALIZATION_SYNTAX,,
            [define if the compiler recognizes the full specialization syntax])
fi
])