configure: add -Wc++{14,17,20}-extensions
authorJames Zern <jzern@google.com>
Sat, 13 Aug 2022 05:24:39 +0000 (22:24 -0700)
committerJames Zern <jzern@google.com>
Sat, 13 Aug 2022 05:24:39 +0000 (22:24 -0700)
commit33b385ec4e850b2663a0048667c34289e38473d2
treeec2a843ec2df2c15d547b6faff29c17ca7821234
parentc082f0ca151f4e16ce7e459dd7018a16db3a763c
configure: add -Wc++{14,17,20}-extensions

the snapshot of googletest and the test files themselves are targeting
c++11 currently; these warnings are supported by recent versions of
clang

Change-Id: I5d36b3bd4058ba1610f0c8b27cad27aadee85939
configure