gistfile0.txt

From ba7f0374ed98dcfef60fffe52c5845df2abc6ffa Mon Sep 17 00:00:00 2001
From: Christopher Larson <[email protected]>
Date: Fri, 5 Feb 2021 02:43:04 +0500
Subject: [PATCH] copydebugsources_extra: check alternative paths for source
 files for debug

This handles paths being pulled from paths that package.bbclass currently
does not handle, such as generated sources written to ${B}, as is the case
for libstdc++, or those from work-shared.

Signed-off-by: Christopher Larson <[email protected]>
---
 classes/copydebugsources_extra.bbclass | 48 ++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/classes/copydebugsources_extra.bbclass b/classes/copydebugsources_extra.bbclass
index 91f4da2..d10c6d2 100644
--- a/classes/copydebugsources_extra.bbclass
+++ b/classes/copydebugsources_extra.bbclass
@@ -1,3 +1,5 @@
+# Handle any source paths owned by us which are not in the assumed path relative to WORKDIR, such as
+# sources generated and written in ${B}
 def copydebugsources(debugsrcdir, sources, d):
     # The debug src information written out to sourcefile is further processed
     # and copied to the destination here.
@@ -39,6 +41,52 @@ def copydebugsources(debugsrcdir, sources, d):
         bb.utils.mkdirhier(basepath)
         cpath.updatecache(basepath)
 
+        copy_extra = {}
+        prefix_map = d.getVar('DEBUG_PREFIX_MAP')
+        if prefix_map:
+            # Handle any source paths owned by us which are not in the assumed path relative to WORKDIR, such as
+            # sources generated and written in ${B}
+            import shlex
+
+            prefix_maps = []
+            for arg in shlex.split(prefix_map):
+                if arg.startswith('-fdebug-prefix-map=') or arg.startswith('-ffile-prefix-map='):
+                    _, from_path, to_path = arg.split('=', 2)
+                    if to_path and from_path != workdir:
+                        # Entries like recipe-sysroot are excluded here
+                        prefix_maps.append((from_path, to_path))
+
+            if prefix_maps:
+                copy_extra = {}
+                srcroot = os.path.join(localsrc_prefix, workbasedir)
+                for srcfile in list(sources):
+                    if any(srcfile.endswith(i) for i in ['<internal>', '<built-in>']):
+                        continue
+                    elif 'recipe-sysroot' in srcfile:
+                        continue
+
+                    relative = srcfile.replace(localsrc_prefix, '')
+                    existing = os.path.join(workparentdir, relative)
+                    if not os.path.exists(existing):
+                        if prefix_maps:
+                            for from_path, to_path in reversed(prefix_maps):
+                                if srcfile.startswith(to_path + os.sep):
+                                    candidate = os.path.join(from_path, srcfile[len(to_path) + 1:])
+                                    if os.path.exists(candidate):
+                                        dest = oe.path.join(dvar, debugsrcdir, relative)
+                                        copy_extra[candidate] = dest
+                                        break
+                            else:
+                                bb.debug(1, 'copydebugsources: %s does not exist' % existing)
+                        else:
+                            bb.debug(1, 'copydebugsources: %s does not exist' % existing)
+
+        for src, dest in copy_extra.items():
+            src = os.path.realpath(src)
+            bb.utils.mkdirhier(os.path.dirname(dest))
+            bb.debug(1, 'copydebugsources: %s -> %s' % (src, dest))
+            oe.path.copyhardlink(src, dest)
+
         # Ignore files from the recipe sysroots (target and native)
         processdebugsrc =  "LC_ALL=C ; sort -z -u '%s' | egrep -v -z '((<internal>|<built-in>)$|/.*recipe-sysroot.*/)' | "
         # We need to ignore files that are not actually ours
-- 
2.36.1