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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
dnl Autoconf support for C++
dnl Copyright (C) 1988 Eleftherios Gkioulekas <lf@amath.washington.edu>
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301, USA.
dnl
dnl As a special exception to the GNU General Public License, if you
dnl distribute this file as part of a program that contains a configuration
dnl script generated by Autoconf, you may include it under the same
dnl distribution terms that you use for the rest of that program.
# -----------------------------------------------------------------
# This macro should be called to configure your C++ compiler.
# When called, the macro does the following things:
# 1. It finds an appropriate C++ compiler
# If you passed the flag --with-cxx=foo, then it uses that
# particular compiler
# 2. Checks whether the compiler accepts the -g
# ------------------------------------------------------------------
AC_DEFUN([LF_CONFIGURE_CXX],[
AC_REQUIRE([AC_PROG_CXX])dnl
AC_REQUIRE([AC_PROG_CXXCPP])dnl
LF_CXX_PORTABILITY
])
# -----------------------------------------------------------------------
# This macro tests the C++ compiler for various portability problem.
# -----------------------------------------------------------------------
AC_DEFUN([LF_CXX_PORTABILITY],[
dnl
dnl Check for common C++ portability problems
dnl
dnl AC_LANG_PUSH
dnl AC_LANG_CPLUSPLUS
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
dnl Test whether C++ has std::isnan
AC_MSG_CHECKING(whether C++ has std::isnan)
AC_TRY_COMPILE([#include <cmath>], [
std::isnan(0);
], [ AC_MSG_RESULT(yes)
AC_DEFINE(CXX_HAS_STD_ISNAN,[],[Define if has std::isnan]) ],
[ AC_MSG_RESULT(no) ])
dnl Done with the portability checks
dnl AC_LANG_POP([C++])
AC_LANG_RESTORE
])
|
