From dc966f1278c1077938626d682666767d2c8d0c72 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Sat, 9 Apr 2022 18:29:47 +0000
Subject: [PATCH] setup.py: Do not detect multiarch paths when cross-compiling

add_multiarch_paths() function relies on host tools like dpkg-configure
to operate, which is not good when cross compiling, since it ends up
adding native paths in includes in certain cases, e.g. when building
for aarch64 targets using aarch64 build hosts running debian-like
distributions e.g. ubuntu, it ends up adding native multiarch paths
-I/usr/include/aarch64-linux-gnu during cross compile and since arches
are so similar, cross compiler (epecially clang) is inhererently configured
with multiarch ends up adding these paths to compiler cmdline which
works ok with gcc since headers are similar but clang barfs on some gcc
extentions and build fails due to missing gnu extentions but it silently
compiles when using cross gcc.

Fixes python3 cross build by not running this funciton when cross compiling

Upstream-Status: Inappropriate [OE-Specific]
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 setup.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 2e7f263..f7a3d39 100644
--- a/setup.py
+++ b/setup.py
@@ -839,7 +839,8 @@ class PyBuildExt(build_ext):
         # only change this for cross builds for 3.3, issues on Mageia
         if CROSS_COMPILING:
             self.add_cross_compiling_paths()
-        self.add_multiarch_paths()
+        if not CROSS_COMPILING:
+            self.add_multiarch_paths()
         self.add_ldflags_cppflags()
 
     def init_inc_lib_dirs(self):
-- 
2.25.1

