While msys2 itself may be x86_64 running emulated, it still does
indicate whether the host machine runs ARM64 (since recent
changes in https://github.com/msys2/msys2-runtime/pull/244 and
https://github.com/msys2/msys2-runtime/pull/245).
The msys2 uname command also exposes the Windows build number,
which allows determining whether armv7 and/or x86_64 binaries
can be executed.
It's enough to check for the _UCRT define these days, as long
as we are including a header that pulls in the base mingw headers.
Since 8b2ece59fccf0a65257b1ba2fe8d67d7e8a2e8c1 in mingw-w64 (May 6th
2019), the mingw-w64 headers define _UCRT. Since
94a28397eec79e54ce5a8354512f43da88f815d2 (committed on the same date),
the mingw-w64 headers use 0xE00 instead of 0x1400 for UCRT.
It is available on all architectures by default now. Keep the
HAVE_OPENMP conditional within the test makefile to allow custom
testing without having it available.
Since a356782426f5bf54a00570e1f925345e5fda7b2e in llvm-project,
OpenMP can be built for mingw/aarch64, since
fb947c358661b3bd3d5e1fa776ec74cc0f308854 it should work correctly
in all currently tested cases, and since
97958c9bb83cec44b6ce13e732b53de0171a5d43 it can be built for
mingw/armv7.
Use the TOOLEXT variable in run-tests.sh in the same way as in the
Makefile. The Makefile sets this variable automatically if invoked
by mingw32-make, but if running run-tests.sh in WSL with native
Windows compilers, then we need to set TOOLEXT manually when calling
run-tests.sh.
Allow skipping the cfguard failure tests when run in such a
configuration, since Linux make in WSL can't easily run cmd.exe
like in MSYS2.
This was split in 591a5c2ddc since
we couldn't/shouldn't test these for UWP targets.
When the testing for UWP targets was reduced in
551b046498, there was no longer any
distinction between TESTS_CPP_LOAD_DLL and TESTS_CPP, so merge
them back.
Ideally we'd wipe the whole test/<arch> directory before running
the tests (we do that if CLEAN is set), but here we only wipe out
the specific ones that can affect how new tests are built and linked.
For x86_64 and aarch64, this requires https://reviews.llvm.org/D89231.
The C++ destructors aren't executed while doing the longjmp (contrary
to how it works MSVC's C++ exceptions), but it no longer crashes.
LLVM's OpenMP implementation only supports Windows on x86, and it
requires a MASM-compatible assembler to build it. Build UASM
for this purpose, for now. (UASM isn't available packaged in
debian/ubuntu repos.) In the future, llvm-ml should be able
to handle it instead, but it's not currently mature enough.
Not including it in the regular build-all.sh for now, as UASM
isn't generally available.
Martin Storsjö