X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=configure.ac;h=6e4a4119d97cfadc8c7f59f09663d2e866b5bce5;hp=a932568ea99ff45f8b08ec14a5e819dbf476462b;hb=24064b43ff0aebda40b1b4605fa6abc2920b4518;hpb=52c44ffaee28a70b6df3280c3354ee4241473b14

diff --git a/configure.ac b/configure.ac
index a932568e..6e4a4119 100644
--- a/configure.ac
+++ b/configure.ac
@@ -39,6 +39,7 @@ AS_IF([test -z "$YACCEXE" -a ! -f $srcdir/ginsh/ginsh_parser.hpp],
 
 dnl Switch to C++ language mode for the following libraries and headers.
 AC_LANG([C++])
+AX_CXX_COMPILE_STDCXX_11
 
 dnl Make sure all the necessary standard headers are installed on the system.
 GINAC_STD_CXX_HEADERS