diff options
Diffstat (limited to 'autoconf/m4/cxx_bidi_iterator.m4')
| -rw-r--r-- | autoconf/m4/cxx_bidi_iterator.m4 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/autoconf/m4/cxx_bidi_iterator.m4 b/autoconf/m4/cxx_bidi_iterator.m4 new file mode 100644 index 0000000..e16976d --- /dev/null +++ b/autoconf/m4/cxx_bidi_iterator.m4 @@ -0,0 +1,23 @@ +# +# Check for bidirectional iterator extension. This is modified from +# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_set.html +# +AC_DEFUN([AC_CXX_HAVE_BI_ITERATOR], +[AC_CACHE_CHECK(whether the compiler has the bidirectional iterator, +ac_cv_cxx_have_bi_iterator, +[AC_REQUIRE([AC_CXX_NAMESPACES]) + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE([#include <iterator> +#ifdef HAVE_NAMESPACES +using namespace std; +#endif],[bidirectional_iterator<int,int> t; return 0;], + ac_cv_cxx_have_bi_iterator=yes, ac_cv_cxx_have_bi_iterator=no) + AC_LANG_RESTORE +]) +HAVE_BI_ITERATOR=0 +if test "$ac_cv_cxx_have_bi_iterator" = yes +then + HAVE_BI_ITERATOR=1 +fi +AC_SUBST(HAVE_BI_ITERATOR)]) |