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-rw-r--r--config-daemon.ac3
1 files changed, 3 insertions, 0 deletions
diff --git a/config-daemon.ac b/config-daemon.ac
index fb80c754c9..a6cf29ca42 100644
--- a/config-daemon.ac
+++ b/config-daemon.ac
@@ -5,9 +5,12 @@ AC_MSG_RESULT([$guix_build_daemon])
 
 dnl C++ environment.  This macro must be used unconditionnaly.
 AC_PROG_CXX
+AC_LANG([C++])
 
 if test "x$guix_build_daemon" = "xyes"; then
 
+  GUIX_ASSERT_CXX11
+
   AC_PROG_RANLIB
   AC_CONFIG_HEADER([nix/config.h])