- Issue #14330: For cross builds, don't use host python, use host search paths
for host compiler.
diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
index 2f2fac2..eccd304 100644
--- a/Lib/sysconfig.py
+++ b/Lib/sysconfig.py
@@ -138,6 +138,10 @@
if os.name == "nt" and "\\pcbuild\\amd64" in _PROJECT_BASE[-14:].lower():
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir, pardir))
+# set for cross builds
+if "_PROJECT_BASE" in os.environ:
+ _PROJECT_BASE = _safe_realpath(os.environ["_PROJECT_BASE"])
+
def _is_python_source_dir(d):
for fn in ("Setup.dist", "Setup.local"):
if os.path.isfile(os.path.join(d, "Modules", fn)):
@@ -673,6 +677,10 @@
# Mac OS is M68k or PPC, etc.
return sys.platform
+ # Set for cross builds explicitly
+ if "_PYTHON_HOST_PLATFORM" in os.environ:
+ return os.environ["_PYTHON_HOST_PLATFORM"]
+
# Try to distinguish various flavours of Unix
osname, host, release, version, machine = os.uname()