This splits out the bionic modulemap from the glibc modulemap. They are
sufficiently different that the duplication is worth it. Furthermore,
it will enable properly identifying the libc on android. Once fully
detangled, this will enable the use of bionic on non-android platforms.
Reviewed the cases of Glibc where branching occurred and checked the
skipped headers against the Android NDK sysroot, and added the Android
check in the right places. This will give access to a lot more
functions from libc.
Unlike Darwin, on Linux when using functions from math.h the m library
needs to be added to the compilation. This should be explicit in the
module map, rather than being implicit in the driver.
Fixes SR-9198
Cross-compilation for multiple architectures & sdks require various
variables to be split to specify the arch/adk variant being focused on.
This change modifies various uses of the `SWIFT_SDK_${SDK}_PATH` to
`SWIFT_SDK_${SDK}_ARCH_${ARCH}`
sys/user.h provides definitions for registers. It would previously get
merged into the sys module which could result in it being multiply
included (as in the case of libdispatch). Add an explicit submodule.
Noticed when building libdispatch on Linux AArch64.
Things like: PthreadBarriers.swift:114:50: error: cannot convert value of type 'UnsafeMutablePointer<pthread_mutex_t>' (aka 'UnsafeMutablePointer<OpaquePointer>') to expected argument type 'UnsafeMutablePointer<pthread_mutex_t?>' (aka 'UnsafeMutablePointer<Optional<OpaquePointer>>')
on barrier.pointee.mutex . I need to do more research to understand this
