lib/lib64 issue with CMAKE-based builds and SDK 3.30
It seems that cmake-based builds are installing into /app/lib64 and pkg-config is failing to find the pc files.
This did not happen with 3.28. I am not sure whether that was because the builds installed into /app/lib or pkg-config was looking into /app/lib64 as well.
Reproduction: Try building shotwell with shotwell@66d8bccd. It will fail at gexiv2 because it cannot find exiv2.
As a work-around, I am setting -DCMAKE_INSTALL_LIBDIR=lib in the two CMake files, but I am not sure if that's the proper way to go or if the SDK needs changing.