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
|
dnl @synopsis AC_CXX_HAVE_FREEZE_SSTREAM
dnl
dnl Check if the compiler has (need) freeze method call in
dnl stringstream/ strstream. Seems that Win32 and STLPort have it,
dnl libstdc++ not ...
dnl
dnl Eg:
dnl
dnl #include <sstream>
dnl #ifdef HAVE_NAMESPACES
dnl using namespace std;
dnl #endif
dnl #ifdef HAVE_SSTREAM
dnl stringstream message;
dnl #else
dnl strstream message;
dnl #endif
dnl message << "Hello";
dnl #ifdef HAVE_FREEZE_SSTREAM
dnl message.freeze(0);
dnl #endif
dnl
dnl @category Cxx
dnl @author Alain BARBET <alian@cpan.org>
dnl @version 2002-09-04
dnl @license GPLWithACException
AC_DEFUN([AC_CXX_HAVE_FREEZE_SSTREAM],
[AC_CACHE_CHECK(whether the compiler has freeze in stringstream,
ac_cv_cxx_have_freeze_sstream,
[AC_REQUIRE([AC_CXX_NAMESPACES])
AC_REQUIRE([AC_CXX_HAVE_SSTREAM])
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <sstream>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif],
[#ifdef HAVE_SSTREAM
stringstream message;
#else
strstream message;
#endif
message << "Hello"; message.freeze(0); return 0;],
ac_cv_cxx_have_freeze_sstream=yes, ac_cv_cxx_have_freeze_sstream=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_have_freeze_sstream" = yes; then
AC_DEFINE(HAVE_FREEZE_SSTREAM,,[define if the compiler has freeze in
stringstream])
fi
])
|
