https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53431
--- Comment #17 from Jeffrey Walton <noloader at gmail dot com> --- (In reply to Jonathan Wakely from comment #15) > (In reply to Jeffrey Walton from comment #13) > > This issued caused Crypto++ to remove -Wall (and above) under GCC. > > That seems to be throwing the baby out with the bathwater. Why not simply use > > -Wall -Wno-unused-value -Wno-unused-variable > Here's a concrete example that just hit my inbox: https://groups.google.com/d/msg/cryptopp-users/ixwCeessWZ8/xR2eOC3-j0MJ. Its a user who compiling/linking against the library. We can't control what options he puts on the command line. But he will discuss a noisy compile :)