docs: cmake build
[m6w6/libmemcached] / m4 / have_cstdint.m4
1 # ===========================================================================
2 # http://tangent.org/
3 # ===========================================================================
4 #
5 # SYNOPSIS
6 #
7 # AX_CXX_CSTDINT()
8 #
9 # DESCRIPTION
10 #
11 # Example:
12 #
13 # LICENSE
14 #
15 # Copyright (c) 2012 Brian Aker` <brian@tangent.org>
16 #
17 # This program is free software: you can redistribute it and/or modify it
18 # under the terms of the GNU General Public License as published by the
19 # Free Software Foundation, either version 3 of the License, or (at your
20 # option) any later version.
21 #
22 # This program is distributed in the hope that it will be useful, but
23 # WITHOUT ANY WARRANTY; without even the implied warranty of
24 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
25 # Public License for more details.
26 #
27 # You should have received a copy of the GNU General Public License along
28 # with this program. If not, see <http://www.gnu.org/licenses/>.
29 #
30 # As a special exception, the respective Autoconf Macro's copyright owner
31 # gives unlimited permission to copy, distribute and modify the configure
32 # scripts that are the output of Autoconf when processing the Macro. You
33 # need not follow the terms of the GNU General Public License when using
34 # or distributing such scripts, even though portions of the text of the
35 # Macro appear in them. The GNU General Public License (GPL) does govern
36 # all other use of the material that constitutes the Autoconf Macro.
37 #
38 # This special exception to the GPL applies to versions of the Autoconf
39 # Macro released by the Autoconf Archive. When you make and distribute a
40 # modified version of the Autoconf Macro, you may extend this special
41 # exception to the GPL to apply to your modified version as well.
42
43 #serial 4
44
45
46 AC_DEFUN([AX_CXX_CSTDINT], [
47 AC_REQUIRE([AC_PROG_CXX])
48 AC_REQUIRE([AC_PROG_CXXCPP])
49
50 AC_CACHE_CHECK([for location of cstdint], [ac_cv_cxx_cstdint], [
51 AC_LANG_PUSH([C++])
52 AX_SAVE_FLAGS
53 CXXFLAGS="${CXX_STANDARD} ${CXXFLAGS}"
54
55 AC_COMPILE_IFELSE([
56 AC_LANG_PROGRAM([#include <cstdint>], [
57 uint32_t t
58 ])],
59 [ac_cxx_cstdint_cstdint="<cstdint>"])
60
61 AS_IF([test -z "$ac_cxx_cstdint_cstdint"],[
62 AC_COMPILE_IFELSE([
63 AC_LANG_PROGRAM([#include <tr1/cstdint>], [ uint32_t t ])],
64 [ac_cxx_cstdint_tr1_cstdint="<tr1/cstdint>"])
65
66 AS_IF([test -z "$ac_cxx_cstdint_tr1_cstdint"],[
67 AC_COMPILE_IFELSE([
68 AC_LANG_PROGRAM([#include <boost/cstdint.hpp>], [ uint32_t t ])],
69 [ac_cxx_cstdint_boost_cstdint_hpp="<boost/cstdint.hpp>"])
70 ])
71 ])
72
73 AC_LANG_POP
74 AX_RESTORE_FLAGS
75
76 AS_IF([test -n "$ac_cxx_cstdint_cstdint"], [ac_cv_cxx_cstdint=$ac_cxx_cstdint_cstdint],
77 [test -n "$ac_cxx_cstdint_tr1_cstdint"], [ac_cv_cxx_cstdint=$ac_cxx_cstdint_tr1_cstdint],
78 [test -n "$ac_cxx_cstdint_boost_cstdint_hpp"], [ac_cv_cxx_cstdint=$ac_cxx_cstdint_boost_cstdint_hpp])
79 ])
80
81 AS_IF([test -n "$ac_cv_cxx_cstdint"], [:], [
82 ac_cv_cxx_cstdint="<stdint.h>"
83 AC_MSG_WARN([Could not find a cstdint header.])
84 ])
85
86 AC_DEFINE_UNQUOTED([CSTDINT_H],[$ac_cv_cxx_cstdint], [the location of <cstdint>])
87
88 ])