From: Khem Raj <raj.khem@gmail.com>
Date: Thu, 7 Aug 2025 04:35:54 +0000 (-0700)
Subject: python3-numpy: Always use libgcc for unwinder on aarch64
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a85f07858b7cf8353541cbe72e2b1a95982d06f3;p=thirdparty%2Fopenembedded%2Fopenembedded-core-contrib.git

python3-numpy: Always use libgcc for unwinder on aarch64

With libgcc (working):

Result: inf
Warnings: ['overflow encountered in cast']

With compiler-rt (failing):

Result: inf (probably still correct)
Warnings: [] (no warnings generated)

The issue is likely that compiler-rt on AArch64 doesn't trigger
the floating-point exceptions that NumPy expects for overflow
detection in type casting operations.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
---

diff --git a/meta/recipes-devtools/python/python3-numpy_2.3.1.bb b/meta/recipes-devtools/python/python3-numpy_2.3.1.bb
index bc718d37c4d..ed41d03e6b5 100644
--- a/meta/recipes-devtools/python/python3-numpy_2.3.1.bb
+++ b/meta/recipes-devtools/python/python3-numpy_2.3.1.bb
@@ -23,6 +23,9 @@ S = "${UNPACKDIR}/numpy-${PV}"
 
 PACKAGECONFIG[svml] = "-Ddisable-svml=false,-Ddisable-svml=true"
 
+# the overflow tests fail with compiler-rt on aarch64
+LDFLAGS:append:toolchain-clang:aarch64 = " -rtlib=libgcc -unwindlib=libgcc"
+
 # Remove references to buildpaths from numpy's __config__.py
 do_install:append() {
     sed -i \