According to Mac OSX's man page [1], this is how we should get the list
of exported symbols:
nm -g -P foo.dylib
-g to only show the exported symbols
-P to show it in a "portable" format, ie. readable by a script
Since this is supported by GNU nm as well, let's use that everywhere,
although some care needs to be taken as there are some differences in
the output.
[1] https://www.unix.com/man-page/osx/1/nm/
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Tested-by: Vinson Lee <vlee@freedesktop.org>
I've re-written this in bash a couple times over the years, and then
I realised python is much more portable and already required by Mesa, so
we might as well make use of it.
I decided to still use the build system's NM instead of re-implementing
symbols extraction, to offload the complexity of keeping it compatible
with many systems (Linux, Unix, BSD, MacOS, etc.), especially when
cross-building.
This new script checks not only that nothing is exported when it
shouldn't be, but also that everything that should be exported is.
Sometimes, some symbols _can_ be exported but don't have to be, in which
case they can be prefixed with `(optional)`.
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by Dylan Baker <dylan@pnwbakers.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Eric Engestrom