| Revision: | 2510 |
| Committed: | Thu Dec 15 14:47:17 2005 UTC (18 years, 6 months ago) by gezelter |
| File size: | 998 byte(s) |
| Log Message: | Adding checks for various features used by ANTLR |
| # | User | Rev | Content |
|---|---|---|---|
| 1 | gezelter | 2510 | dnl |
| 2 | dnl AC_CXX_NAMESPACES | ||
| 3 | dnl | ||
| 4 | dnl Description | ||
| 5 | dnl | ||
| 6 | dnl If the compiler can prevent names clashes using namespaces, | ||
| 7 | dnl define HAVE_NAMESPACES. | ||
| 8 | dnl | ||
| 9 | dnl Version: 1.2 (last modified: 2000-07-19) | ||
| 10 | dnl Author: Luc Maisonobe | ||
| 11 | dnl | ||
| 12 | dnl from http://www.gnu.org/software/ac-archive/htmldoc/index.html | ||
| 13 | dnl | ||
| 14 | dnl License: | ||
| 15 | dnl GNU General Public License | ||
| 16 | dnl [http://www.gnu.org/software/ac-archive/htmldoc/COPYING.html] | ||
| 17 | dnl with this special exception | ||
| 18 | dnl [http://www.gnu.org/software/ac-archive/htmldoc/COPYING-Exception.html]. | ||
| 19 | dnl | ||
| 20 | |||
| 21 | AC_DEFUN([AC_CXX_NAMESPACES], | ||
| 22 | [AC_CACHE_CHECK(whether the compiler implements namespaces, | ||
| 23 | ac_cv_cxx_namespaces, | ||
| 24 | [AC_LANG_SAVE | ||
| 25 | AC_LANG_CPLUSPLUS | ||
| 26 | AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}], | ||
| 27 | [using namespace Outer::Inner; return i;], | ||
| 28 | ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no) | ||
| 29 | AC_LANG_RESTORE | ||
| 30 | ]) | ||
| 31 | if test "$ac_cv_cxx_namespaces" = yes; then | ||
| 32 | AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces]) | ||
| 33 | fi | ||
| 34 | ]) |