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.

(From OE-Core rev: a85f07858b7cf8353541cbe72e2b1a95982d06f3)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 0 deletions

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 bc718d37c4..ed41d03e6b 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 \