X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=configure.ac;h=59a7f355c005cebcd81e7d15f828e4d1899a7c77;hb=b1ca0c41051aa0465bce2397021e1cfd14084388;hp=34386d0663c723283be1f2b46e1c47c4daf9fd4d;hpb=b5b5d43f302e0b9290d3e247ea29699814d46abb;p=collectd.git

diff --git a/configure.ac b/configure.ac
index 34386d06..59a7f355 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2722,6 +2722,7 @@ if test "x$withval" != "xno"; then
   else
     AC_MSG_RESULT([no])
     with_libgrpcpp="no (requires C++11 support)"
+    with_libprotobuf="no (<google/protobuf/util/time_util.h> requires C++11 support)"
   fi
 fi
 
@@ -4568,7 +4569,7 @@ if test "x$withval" != "xno"; then
   AC_CHECK_LIB([protobuf], [main],
     [
       SAVE_CPPFLAGS="$CPPFLAGS"
-      CPPFLAGS="$with_libprotobuf_cppflags $PROTOBUF_CFLAGS"
+      CPPFLAGS="-std=c++11 $with_libprotobuf_cppflags $PROTOBUF_CFLAGS"
       if test "x$PROTOBUF_LIBS" = "x"
       then
         PROTOBUF_LIBS="-lprotobuf"