diff options
Diffstat (limited to 'm4/stl_hash.m4')
| -rw-r--r-- | m4/stl_hash.m4 | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/m4/stl_hash.m4 b/m4/stl_hash.m4 deleted file mode 100644 index 912b954e..00000000 --- a/m4/stl_hash.m4 +++ /dev/null @@ -1,43 +0,0 @@ -# We check two things: where the include file is for hash_map, and -# what namespace hash_map lives in within that include file. We -# include AC_TRY_COMPILE for all the combinations we've seen in the -# wild. We define one of HAVE_HASH_MAP or HAVE_EXT_HASH_MAP depending -# on location, and HASH_NAMESPACE to be the namespace hash_map is -# defined in. -# -# Ideally we'd use AC_CACHE_CHECK, but that only lets us store one value -# at a time, and we need to store two (filename and namespace). -# prints messages itself, so we have to do the message-printing ourselves -# via AC_MSG_CHECKING + AC_MSG_RESULT. (TODO(csilvers): can we cache?) - -AC_DEFUN([AC_CXX_STL_HASH], - [AC_MSG_CHECKING(the location of hash_map) - AC_LANG_SAVE - AC_LANG_CPLUSPLUS - ac_cv_cxx_hash_map="" - for location in ext/hash_map hash_map; do - for namespace in __gnu_cxx "" std stdext; do - if test -z "$ac_cv_cxx_hash_map"; then - AC_TRY_COMPILE([#include <$location>], - [${namespace}::hash_map<int, int> t], - [ac_cv_cxx_hash_map="<$location>"; - ac_cv_cxx_hash_namespace="$namespace";]) - fi - done - done - ac_cv_cxx_hash_set=`echo "$ac_cv_cxx_hash_map" | sed s/map/set/`; - if test -n "$ac_cv_cxx_hash_map"; then - AC_DEFINE(HAVE_HASH_MAP, 1, [define if the compiler has hash_map]) - AC_DEFINE(HAVE_HASH_SET, 1, [define if the compiler has hash_set]) - AC_DEFINE_UNQUOTED(HASH_MAP_H,$ac_cv_cxx_hash_map, - [the location of <hash_map>]) - AC_DEFINE_UNQUOTED(HASH_SET_H,$ac_cv_cxx_hash_set, - [the location of <hash_set>]) - AC_DEFINE_UNQUOTED(HASH_NAMESPACE,$ac_cv_cxx_hash_namespace, - [the namespace of hash_map/hash_set]) - AC_MSG_RESULT([$ac_cv_cxx_hash_map]) - else - AC_MSG_RESULT() - AC_MSG_WARN([could not find an STL hash_map]) - fi -]) |