15 lines
735 B
Text
15 lines
735 B
Text
# Checks whether the compiler implements namespaces
|
|
AC_DEFUN([AC_CXX_NAMESPACES],
|
|
[AC_CACHE_CHECK(whether the compiler implements namespaces,
|
|
ac_cv_cxx_namespaces,
|
|
[AC_LANG_SAVE
|
|
AC_LANG_CPLUSPLUS
|
|
AC_TRY_COMPILE([namespace Outer {
|
|
namespace Inner { int i = 0; }}],
|
|
[using namespace Outer::Inner; return i;],
|
|
ac_cv_cxx_namespaces=yes,
|
|
ac_cv_cxx_namespaces=no)
|
|
AC_LANG_RESTORE])
|
|
if test "$ac_cv_cxx_namespaces" = yes; then
|
|
AC_DEFINE(HAVE_NAMESPACES, 1, [define if the compiler implements namespaces])
|
|
fi])
|