oeqa/selftest/minidebuginfo: Create selftest for minidebuginfo

Add a new selftest to validate minidebuginfo support. This selftest
builds a complete target image with PACKAGE_MINIDEBUGINFO enabled. ELFs
included in the image are expected to have minidebuginfo included in the
resulting executables and shared libraries, the self test validates this
by unpacking the image and checking for the associated ".gnu_debugdata"
section on busybox and libc ELFs.

(From OE-Core rev: e7b0b23fd8357456ba41fe8d222f10313536d2d3)

Signed-off-by: Nathan Rossi <nathan.rossi@digi.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
(cherry picked from commit 5063a31ad05b75ec6ac12158fe759e81fcdb1585)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/cases/minidebuginfo.py

@@ -0,0 +1,49 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+import os
+import subprocess
+import tempfile
+import shutil
+
+from oeqa.selftest.case import OESelftestTestCase
+from oeqa.utils.commands import bitbake, get_bb_var, runCmd
+
+
+class Minidebuginfo(OESelftestTestCase):
+    def test_minidebuginfo(self):
+        target_sys = get_bb_var("TARGET_SYS")
+        binutils = "binutils-cross-{}".format(get_bb_var("TARGET_ARCH"))
+
+        self.write_config("""
+PACKAGE_MINIDEBUGINFO = "1"
+IMAGE_FSTYPES = "tar.bz2"
+""")
+        bitbake("core-image-minimal {}:do_addto_recipe_sysroot".format(binutils))
+
+        deploy_dir = get_bb_var("DEPLOY_DIR_IMAGE")
+        native_sysroot = get_bb_var("RECIPE_SYSROOT_NATIVE", binutils)
+        readelf = get_bb_var("READELF", "core-image-minimal")
+
+        # add usr/bin/${TARGET_SYS} to PATH
+        env = os.environ.copy()
+        paths = [os.path.join(native_sysroot, "usr", "bin", target_sys)]
+        paths += env["PATH"].split(":")
+        env["PATH"] = ":".join(paths)
+
+        # confirm that executables and shared libraries contain an ELF section
+        # ".gnu_debugdata" which stores minidebuginfo.
+        with tempfile.TemporaryDirectory(prefix = "unpackfs-") as unpackedfs:
+            filename = os.path.join(deploy_dir, "core-image-minimal-{}.tar.bz2".format(self.td["MACHINE"]))
+            shutil.unpack_archive(filename, unpackedfs)
+
+            r = runCmd([readelf, "-W", "-S", os.path.join(unpackedfs, "bin", "busybox")],
+                    native_sysroot = native_sysroot, env = env)
+            self.assertIn(".gnu_debugdata", r.output)
+
+            r = runCmd([readelf, "-W", "-S", os.path.join(unpackedfs, "lib", "libc.so.6")],
+                    native_sysroot = native_sysroot, env = env)
+            self.assertIn(".gnu_debugdata", r.output)
+