Hi, in OpenWRT projects like FORTIFY_SOURCE have been making inroads, but c-ares has been a bit of a hiccup. Nothing major, but I'm trying to keep local changes to packages as minimal as possible, so I wanted to bring this up here.
The autotools macro m4/xc-val-flgs.m4 is, in my opinion, rather excessively forceful on aborting the build if it finds any -D flags in CFLAGS, when it wants them to be only in CPPFLAGS. Does this _really_ need to be a fatal error? (Does it even need to be checking this at all?) See https://github.com/openwrt/packages/pull/1464 and the two different approaches there. Sincerely, Karl Palsson
