| 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, |
| Reid Spencer | 12de17d | 2004-09-19 22:31:49 +0000 | [diff] [blame] | 7 | [AC_LANG_PUSH([C++]) |
| 8 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM( |
| 9 | [[namespace Outer { namespace Inner { int i = 0; }}]], |
| 10 | [[using namespace Outer::Inner; return i;]])], |
| 11 | ac_cv_cxx_namespaces=yes, |
| 12 | ac_cv_cxx_namespaces=no) |
| 13 | AC_LANG_POP([C++]) |
| Reid Spencer | 491f681 | 2004-09-07 06:56:14 +0000 | [diff] [blame] | 14 | ]) |
| 15 | if test "$ac_cv_cxx_namespaces" = yes; then |
| 16 | AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces]) |
| 17 | fi |
| 18 | ]) |
| 19 | |