This is a partial implementation of #909 - it is somewhat inefficient (not suspending the task using a future) and does not implement cancellation. A more complete implementation may follow in 1.11.0.
In the 1.10.8 thirdparty packages, OpenCV is split into a lib folder and a lib-10.6 folder, so we should use the proper dylibs to still be able to target 10.6
Besides use of --universal with --osxtarget 11, it's now also possible to create a fat build with ARM64 by using --osxtarget 10.9 --arch x86_64 --arch arm64 (it will use the 11.x SDK but target 10.9)
FMOD Ex is also being disabled when building against the 10.14 SDK or higher, because the necessary libstdc++.6.0.9.dylib is no longer being shipped. FMOD Ex, libRocket and Cg are all disabled on ARM64 (FMOD Ex and Cg don't have the binaries available, libRocket could theoretically be built but there's no point as there won't be an ARM64 build of Python 2.7, and besides, we've deprecated it anyway).
Fixes#1062
This results in size savings for thirdparty libraries that are only used once, and a size increase for libraries used more than once (eg. OpenSSL). More importantly, it prevents conflicts with other versions of the libraries loaded by other Python modules, such as the version of OpenSSL that the hmac module uses.
We need to be careful to only apply this for packages that are either used once, used in a plug-in module, or if we don't need to pass thirdparty library structures across Panda library boundaries. For example, I haven't done this for Bullet, since the Bullet symbols need to be available through libpandabullet.so due to the fact that pandabullet contains calls to the Bullet libraries in the inline methods.
Fixes#851
These were probably added before makepanda gained the ability to automatically add dependencies of static libraries when linking statically.
They don't really do any harm--the linker will probably optimize these out automatically--but it's cleaner not to add unused dependencies.
It doesn't seem like this setting is actually needed (because mayapath does the necessary set-up), but while it's set, we might as well set it to something more sensible.
rdb
Daniel
kamgha
Mitchell Stokes
Sam Edwards