1 files changed, 1 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4
index 1ffc46ab..e8d099d4 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -12,6 +12,7 @@
 # PARTICULAR PURPOSE.
 
 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
+m4_include([m4/ax_cxx_compile_stdcxx.m4])
 m4_include([m4/ax_random_device.m4])
 m4_include([m4/libtool.m4])
 m4_include([m4/ltoptions.m4])