tools/make-ext4fs: Fix build on MacOSX
MacOSX does not support "-Wl,-Bstatic" so do not force the static
linking.
We only copy the static libz library into the staging libraries
directories, the linker will anyway only find the static version and
link against that on all systems.
Fixes: 8dcd941d8b9 ("tools/zlib: move zlib build to tools")
Signed-off-by: Hauke Mehrtens <[email protected]>
Hauke Mehrtens