package.py: skip dwarfsrcfiles for Clang LTO static libraries

When using Clang toolchain with LTO enabled, static libraries (.a) contain
LLVM bitcode objects instead of ELF objects. dwarfsrcfiles cannot process
these files and fails with "not a valid ELF file" error.

Rather than catching the error message, guard the dwarfsrcfiles call by
checking for the specific conditions: static library (using is_static_lib()
magic check) + clang toolchain + lto in DISTRO_FEATURES. When all conditions
are met, skip the call silently.

Signed-off-by: mark.yang <mark.yang@lge.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/lib/oe/package.py b/meta/lib/oe/package.py
index baaa0cba02e119a56999fbc338191501429788c5..279cd567b312d6c5d23f0956788263d5d3693f70 100644 (file)
--- a/meta/lib/oe/package.py
+++ b/meta/lib/oe/package.py
@@ -770,6 +770,14 @@ def parse_debugsources_from_dwarfsrcfiles_output(dwarfsrcfiles_output):
     return debugfiles.keys()
 
 def source_info(file, d, fatal=True):
+    # Skip static libraries when using Clang toolchain with LTO enabled.
+    # In this case, .a files contain LLVM bitcode instead of ELF objects,
+    # and dwarfsrcfiles cannot process them.
+    if is_static_lib(file):
+        if d.getVar('TOOLCHAIN') == "clang" and bb.utils.contains('DISTRO_FEATURES', 'lto', True, False, d):
+            bb.debug(1, "Skipping dwarfsrcfiles for Clang LTO archive: %s" % file)
+            return []
+
     cmd = ["dwarfsrcfiles", file]
     try:
         output = subprocess.check_output(cmd, universal_newlines=True, stderr=subprocess.STDOUT)