diff options
Diffstat (limited to 'm4/ac_cxx_header_tr1_unordered_map.m4')
| -rw-r--r-- | m4/ac_cxx_header_tr1_unordered_map.m4 | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/m4/ac_cxx_header_tr1_unordered_map.m4 b/m4/ac_cxx_header_tr1_unordered_map.m4 new file mode 100644 index 0000000..9af67b5 --- /dev/null +++ b/m4/ac_cxx_header_tr1_unordered_map.m4 @@ -0,0 +1,34 @@ +# =========================================================================== +# http://autoconf-archive.cryp.to/ac_cxx_header_tr1_unordered_map.html +# =========================================================================== +# +# SYNOPSIS +# +# AC_CXX_HEADER_TR1_UNORDERED_MAP +# +# DESCRIPTION +# +# Check whether the TR1 include <unordered_map> exists and define +# HAVE_TR1_UNORDERED_MAP if it does. +# +# LICENSE +# +# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. + +AC_DEFUN([AC_CXX_HEADER_TR1_UNORDERED_MAP], [ + AC_CACHE_CHECK(for tr1/unordered_map, + ac_cv_cxx_tr1_unordered_map, + [AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE([#include <tr1/unordered_map>], [using std::tr1::unordered_map;], + ac_cv_cxx_tr1_unordered_map=yes, ac_cv_cxx_tr1_unordered_map=no) + AC_LANG_RESTORE + ]) + if test "$ac_cv_cxx_tr1_unordered_map" = yes; then + AC_DEFINE(HAVE_TR1_UNORDERED_MAP,,[Define if tr1/unordered_map is present. ]) + fi +]) |