While we on Linux will do a compile test to check for a
system zlib, the test on a Windows host was less accurate, causing
us to compile in the zlib from 3rdparty/ here. This caused compilation
errors after updating the freetype font engine to support color fonts,
since the zlib in 3rdparty/ was included implicitly in the freetype
library, and since it depends on Qt headers, the compilation failed
in this context.
The hotfix is to force system zlib on Android for Windows hosts, since
we know it is available in the NDK. Doing a proper build check is not
worth it right now, due to future plans for changing configure. We
will still break for an explicit -qt-zlib compilation, so the plan is
to fix this in an upcoming commit by separating libpng into
a library.
Change-Id: I7854c3c762fa37f7ee4b5f1112dbae8b5973ea86
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
e6cb3b8c76