gh-110152: regrtest handles cross compilation and HOSTRUNNER (#110156)

* _add_python_opts() now handles cross compilation and HOSTRUNNER.
* display_header() now tells if Python is cross-compiled, display
  HOSTRUNNER, and get the host platform.
* Remove Tools/scripts/run_tests.py script.
* Remove "make hostrunnertest": use "make buildbottest"
  or "make test" instead.

1 files changed, 0 insertions, 78 deletions

diff --git a/Tools/scripts/run_tests.py b/Tools/scripts/run_tests.py
deleted file mode 100644
index 3e3d15d..0000000
--- a/Tools/scripts/run_tests.py
+++ /dev/null
@@ -1,78 +0,0 @@
-"""Run Python's test suite in a fast, rigorous way.
-
-The defaults are meant to be reasonably thorough, while skipping certain
-tests that can be time-consuming or resource-intensive (e.g. largefile),
-or distracting (e.g. audio and gui). These defaults can be overridden by
-simply passing a -u option to this script.
-
-"""
-
-import os
-import shlex
-import sys
-import sysconfig
-import test.support
-
-
-def is_multiprocess_flag(arg):
-    return arg.startswith('-j') or arg.startswith('--multiprocess')
-
-
-def is_python_flag(arg):
-    return arg.startswith('-p') or arg.startswith('--python')
-
-
-def main(regrtest_args):
-    args = [sys.executable]
-
-    cross_compile = '_PYTHON_HOST_PLATFORM' in os.environ
-    if (hostrunner := os.environ.get("_PYTHON_HOSTRUNNER")) is None:
-        hostrunner = sysconfig.get_config_var("HOSTRUNNER")
-    if cross_compile:
-        # emulate -E, but keep PYTHONPATH + cross compile env vars, so
-        # test executable can load correct sysconfigdata file.
-        keep = {
-            '_PYTHON_PROJECT_BASE',
-            '_PYTHON_HOST_PLATFORM',
-            '_PYTHON_SYSCONFIGDATA_NAME',
-            'PYTHONPATH'
-        }
-        environ = {
-            name: value for name, value in os.environ.items()
-            if not name.startswith(('PYTHON', '_PYTHON')) or name in keep
-        }
-    else:
-        environ = os.environ.copy()
-
-    # Allow user-specified interpreter options to override our defaults.
-    args.extend(test.support.args_from_interpreter_flags())
-
-    args.extend(['-m', 'test',    # Run the test suite
-                 '--fast-ci',     # Fast Continuous Integration mode
-                 ])
-    if not any(is_multiprocess_flag(arg) for arg in regrtest_args):
-        if cross_compile and hostrunner:
-            # For now use only two cores for cross-compiled builds;
-            # hostrunner can be expensive.
-            args.extend(['-j', '2'])
-
-    if cross_compile and hostrunner:
-        # If HOSTRUNNER is set and -p/--python option is not given, then
-        # use hostrunner to execute python binary for tests.
-        if not any(is_python_flag(arg) for arg in regrtest_args):
-            buildpython = sysconfig.get_config_var("BUILDPYTHON")
-            args.extend(["--python", f"{hostrunner} {buildpython}"])
-
-    args.extend(regrtest_args)
-
-    print(shlex.join(args), flush=True)
-
-    if sys.platform == 'win32':
-        from subprocess import call
-        sys.exit(call(args))
-    else:
-        os.execve(sys.executable, args, environ)
-
-
-if __name__ == '__main__':
-    main(sys.argv[1:])