| Reid Spencer | 491f681 | 2004-09-07 06:56:14 +0000 | [diff] [blame^] | 1 | # Check for C++ namespace support. This is from |
| 2 | # http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_namespaces.html |
| 3 | # |
| 4 | AC_DEFUN([AC_CXX_NAMESPACES], |
| 5 | [AC_CACHE_CHECK(whether the compiler implements namespaces, |
| 6 | ac_cv_cxx_namespaces, |
| 7 | [AC_LANG_SAVE |
| 8 | AC_LANG_CPLUSPLUS |
| 9 | AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}], |
| 10 | [using namespace Outer::Inner; return i;], |
| 11 | ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no) |
| 12 | AC_LANG_RESTORE |
| 13 | ]) |
| 14 | if test "$ac_cv_cxx_namespaces" = yes; then |
| 15 | AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces]) |
| 16 | fi |
| 17 | ]) |
| 18 | |