This works around a build problem that occurs because NUnit ships with a
P/Invoke to a function that doesn't exist on Apple platforms:
MTOUCH : error MT5210: Native linking failed, undefined symbol: _GetVersionEx. Please verify that all the necessary frameworks have been referenced and native libraries are properly linked in. [/Users/xamarinqa/myagent/_work/8/s/xamarin-macios/tests/xharness/tmp-test-dir/monotouch-test58/monotouch-test-tvos.csproj]
MTOUCH : error MT5201: Native linking failed. Please review the build log and the user flags provided to gcc: -fembed-bitcode-marker [/Users/xamarinqa/myagent/_work/8/s/xamarin-macios/tests/xharness/tmp-test-dir/monotouch-test58/monotouch-test-tvos.csproj]
clang : error : linker command failed with exit code 1 (use -v to see invocation) [/Users/xamarinqa/myagent/_work/8/s/xamarin-macios/tests/xharness/tmp-test-dir/monotouch-test58/monotouch-test-tvos.csproj]
Also fix an issue in mtouch where we would overwrite any previous --dlsym
values; they're now accumulative (`--dlsym:foo.dll --dlsym:bar.dll` works
as expected)
Ref: https://github.com/nunit/nunit/issues/3618
In particular NUnit uses reflection to get a private method, and the linker removes
the corresponding private method:
1c680b4dc8/src/NUnitFramework/framework/Internal/TestExecutionContext.cs (L552)
So add an xml definition to keep this private method, and modify project files to
pass the xml definition to mtouch and mmp.
Some care needs to be taken to make sure xharness is still able to clone these project
files.
Rolf Bjarne Kvinge