commit 73c2cfb97b1070c75db2c9cbf0b46de914883495
author William A. Kennington III <wak@google.com> Wed Sep 12 18:01:37 2018 -0700
committer William A. Kennington III <wak@google.com> Thu Sep 13 18:21:33 2018 -0700
tree e366818c6f8bee5391d0f9ad97a89fc01076bea7
parent 8f6c51564d634eb26f1ca8aa599fbbda19e06dec

Switch to C++17

There is no harm in doing this since we are not a client library and all
environments using this project should have c++17 compliant compilers at
this point.

Tested:
    Run through unit test suite.

Change-Id: Iceae5375fd69b1929e1c4e2c6c297d131c61de68
Signed-off-by: William A. Kennington III <wak@google.com>

configure.ac

diff --git a/configure.ac b/configure.ac
index a911296..6c5ac70 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,7 @@
 AC_PROG_INSTALL
 
 # Checks for typedefs, structures, and compiler characteristics.
-AX_CXX_COMPILE_STDCXX_14([noext])
+AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory])
 AX_APPEND_COMPILE_FLAGS([-Wall -Werror], [CXXFLAGS])
 
 # For linking