Merge pull request #2758 from nsait-linaro/win_arm64_launchers

Fixes 2757: Add win/arm64 launchers to create arm64 executables

changelog.d/2757.change.rst

@@ -0,0 +1 @@
+Add windows arm64 launchers for scripts generated by easy_install.

msvc-build-launcher-arm64.cmd

@@ -0,0 +1,19 @@
+@echo off
+
+REM Build with jaraco/windows Docker image
+
+set PATH_OLD=%PATH%
+set PATH=C:\BuildTools\VC\Auxiliary\Build;%PATH_OLD%
+
+REM now for arm 64-bit
+REM Cross compile for arm64
+call VCVARSx86_arm64
+if "%ERRORLEVEL%"=="0" (
+  cl /D "GUI=0" /D "WIN32_LEAN_AND_MEAN" launcher.c /O2 /link /MACHINE:arm64 /SUBSYSTEM:CONSOLE /out:setuptools/cli-arm64.exe
+  cl /D "GUI=1" /D "WIN32_LEAN_AND_MEAN" launcher.c /O2 /link /MACHINE:arm64 /SUBSYSTEM:WINDOWS /out:setuptools/gui-arm64.exe
+) else (
+  echo Visual Studio 2019 with arm64 toolchain not installed
+)
+
+set PATH=%PATH_OLD%
+

setuptools/command/easy_install.py

@@ -2263,7 +2263,10 @@ def get_win_launcher(type):
     """
     launcher_fn = '%s.exe' % type
     if is_64bit():
-        launcher_fn = launcher_fn.replace(".", "-64.")
+        if get_platform() == "win-arm64":
+            launcher_fn = launcher_fn.replace(".", "-arm64.")
+        else:
+            launcher_fn = launcher_fn.replace(".", "-64.")
     else:
         launcher_fn = launcher_fn.replace(".", "-32.")
     return resource_string('setuptools', launcher_fn)

setuptools/tests/test_windows_wrappers.py

@@ -13,6 +13,7 @@
 """
 
 import sys
+import platform
 import textwrap
 import subprocess
 
@@ -51,10 +52,20 @@ def create_script(cls, tmpdir):
             f.write(w)
 
 
+def win_launcher_exe(prefix):
+    """ A simple routine to select launcher script based on platform."""
+    assert prefix in ('cli', 'gui')
+    if platform.machine() == "ARM64":
+        return "{}-arm64.exe".format(prefix)
+    else:
+        return "{}-32.exe".format(prefix)
+
+
 class TestCLI(WrapperTester):
     script_name = 'foo-script.py'
-    wrapper_source = 'cli-32.exe'
     wrapper_name = 'foo.exe'
+    wrapper_source = win_launcher_exe('cli')
+
     script_tmpl = textwrap.dedent("""
         #!%(python_exe)s
         import sys
@@ -155,7 +166,7 @@ class TestGUI(WrapperTester):
     -----------------------
     """
     script_name = 'bar-script.pyw'
-    wrapper_source = 'gui-32.exe'
+    wrapper_source = win_launcher_exe('gui')
     wrapper_name = 'bar.exe'
 
     script_tmpl = textwrap.dedent("""