>>> Completed installing libsigc++-2.2.3 into /var/tmp/portage/dev-libs/libsigc++-2.2.3/image/ * QA Notice: Unrecognized configure options: * * configure: WARNING: Unrecognized options: --enable-debug * configure: WARNING: Unrecognized options: --enable-debug strip: i686-pc-linux-gnu-strip --strip-unneeded -R .comment usr/lib/libsigc-2.0.so.0.0.0 usr/lib/libsigc-2.0.a removing executable bit: usr/lib/libsigc-2.0.la
This is solved in 2.2.7