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-rw-r--r--configure.ac3
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 5f45cdeb..54d0c6bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,6 +17,9 @@ LIBS="$LIBS $BOOST_PROGRAM_OPTIONS_LIBS $BOOST_REGEX_LIBS $BOOST_THREAD_LIBS"
AC_CHECK_HEADER(boost/math/special_functions/digamma.hpp,
[AC_DEFINE([HAVE_BOOST_DIGAMMA], [], [flag for boost::math::digamma])])
+AC_CHECK_HEADER(google/dense_hash_map,
+ [AC_DEFINE([HAVE_SPARSEHASH], [], [flag for google::dense_hash_map])])
+
AC_PROG_INSTALL
GTEST_LIB_CHECK