Fix cross-platform compilation using distutils._msvccompiler.MSVCCompiler.

Avasam · jaraco · commit 809a9a7cf528 · 2024-09-15T10:39:17.000-04:00
Actually use the `plat_name` param in `MSVCCompiler.initialize`. Selective cherry-pick of pypa/distutils@a0339c1. Closes #4648.
diff --git a/newsfragments/4648.bugfix.rst b/newsfragments/4648.bugfix.rst
@@ -0,0 +1 @@
+Fix cross-platform compilation using ``distutils._msvccompiler.MSVCCompiler`` -- by :user:`saschanaz` and :user:`Avasam`
diff --git a/setuptools/_distutils/_msvccompiler.py b/setuptools/_distutils/_msvccompiler.py
@@ -284,7 +284,7 @@ def initialize(self, plat_name=None):
                 f"--plat-name must be one of {tuple(_vcvars_names)}"
             )
 
-        plat_spec = _get_vcvars_spec(get_host_platform(), get_platform())
+        plat_spec = _get_vcvars_spec(get_host_platform(), plat_name)
 
         vc_env = _get_vc_env(plat_spec)
         if not vc_env:

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Fix cross-platform compilation using ``distutils._msvccompiler.MSVCCompiler`` -- by :user:`saschanaz` and :user:`Avasam`
Original file line number	Diff line number	Diff line change
`@@ -284,7 +284,7 @@ def initialize(self, plat_name=None):`
`284`	`284`	`f"--plat-name must be one of {tuple(_vcvars_names)}"`
`285`	`285`	`)`
`286`	`286`
`287`		`- plat_spec = _get_vcvars_spec(get_host_platform(), get_platform())`
	`287`	`+ plat_spec = _get_vcvars_spec(get_host_platform(), plat_name)`
`288`	`288`
`289`	`289`	`vc_env = _get_vc_env(plat_spec)`
`290`	`290`	`if not vc_env:`