Building upmpdcli aborts because of an unsafe header inclusion of
`/usr/include/libupnpp`. Using `{prefix}` to get the header path is
wrong for cross-compilation.
Instead of hard-coding the flags for libupnpp use pkg-config to get the
correct ones.
Note that this patch adds the host-pkgconfig dependency unconditionally and
removes the necessity to pass the libupnpp manually to LIBS for a static
build.
Upstream-status: https://github.com/medoc92/upmpdcli/pull/49
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
