build: enable C++20
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I6d994b7113fc06c6fd8a77faee239d8614219855
diff --git a/configure.ac b/configure.ac
index 17fc87f..b55685a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@
[AC_MSG_ERROR([Could not find cereal/archives/binary.hpp... cereal package required])])
# Checks for typedefs, structures, and compiler characteristics.
-AX_CXX_COMPILE_STDCXX_17([noext])
+AX_CXX_COMPILE_STDCXX([20],[noext])
AX_APPEND_COMPILE_FLAGS([-Wall -Werror], [CXXFLAGS])
LT_INIT