oeqa/selftest/rust: strip debug symbols from test binaries

Strip debug symbols from test binaries using RUSTFLAGS='-C strip=debuginfo'
to reduce binary sizes from 300+ MB to ~140 MB.

This is especially critical for PowerPC mac99 which has a hardcoded 768MB
RAM limit in QEMU. Without stripping, test binaries uploaded to /tmp (tmpfs)
cause 'No space left on device' errors during test execution.

The size reduction also benefits all other architectures by reducing
memory pressure and upload times during testing.

(From OE-Core rev: ede3ac6f587507f98ffbe9a8b07e21e57c27c986)

Signed-off-by: Peter Tatrai <peter.tatrai.ext@siemens.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/lib/oeqa/selftest/cases/rust.py b/meta/lib/oeqa/selftest/cases/rust.py
index 06acf53e9a..31222e2456 100644
--- a/meta/lib/oeqa/selftest/cases/rust.py
+++ b/meta/lib/oeqa/selftest/cases/rust.py
@@ -122,6 +122,9 @@ class RustSelfTestSystemEmulated(OESelftestTestCase, OEPTestResultTestCase):
             cmd = "export TARGET_VENDOR=\"-poky\";"
             cmd = cmd + " export PATH=%s/recipe-sysroot-native/usr/bin/python3-native:%s/recipe-sysroot-native/usr/bin:%s/recipe-sysroot-native/usr/bin/%s:%s/hosttools:$PATH;" % (rustlibpath, rustlibpath, rustlibpath, tcpath, tmpdir)
             cmd = cmd + " export RUST_TARGET_PATH=%s/rust-targets;" % rustlibpath
+            # Strip debug symbols from test binaries to reduce size (300+ MB -> ~140 MB)
+            # PowerPC mac99 QEMU has 768MB RAM limit, so we need to minimize test binary sizes
+            cmd = cmd + " export RUSTFLAGS='-C strip=debuginfo';"
             # Trigger testing.
             cmd = cmd + " export TEST_DEVICE_ADDR=\"%s:12345\";" % qemu.ip
             cmd = cmd + " cd %s; python3 src/bootstrap/bootstrap.py test %s --target %s" % (builddir, testargs, targetsys)