license/license_image: Fix license file layout to avoid overlapping files

Currently DEPLOY_DIR/licenses is added to SSTATE_ALLOW_OVERLAP_FILES. This
leads to bugs since when one MACHINE_ARCH recipes is cleaned, it removes the
files for another which then results in later build failures as license files
disappear.

The solution is to include SSTAGE_PKGARCH in the path names to the license files.
That does mean a search has to be used to find the correct license files for a
given PN but that can be done via SSTATE_ARCHS.

The implication for other tools is the layout has changed so tools will need to
adapt to the new paths. The benefit is no more strange build failures such as from
patterns like:

MACHINE=qemux86-64 bitbake core-image-minimal
MACHINE=genericx86-64 bitbake core-image-minimal
MACHINE=qemux86-64 bitbake linux-yocto -c clean
MACHINE=genericx86-64 bitbake core-image-minimal -C rootfs

[YOCTO #14123]

For anyone finding this commit, I'd question how much people should be relying on
this code for tooling and suggest the SPDX manifests should be the preferred data
format going forward anyway.

(From OE-Core rev: 1a4ab9fc26659507e678e87312b514e8ea515673)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 34 insertions, 12 deletions

diff --git a/meta/classes-recipe/license_image.bbclass b/meta/classes-recipe/license_image.bbclass
index fc859c7c65..19b3dc55ba 100644
--- a/meta/classes-recipe/license_image.bbclass
+++ b/meta/classes-recipe/license_image.bbclass
@@ -18,7 +18,7 @@ python() {
 
 python write_package_manifest() {
     # Get list of installed packages
-    license_image_dir = d.expand('${LICENSE_DIRECTORY}/${IMAGE_NAME}')
+    license_image_dir = d.expand('${LICENSE_DIRECTORY}/${SSTATE_PKGARCH}/${IMAGE_NAME}')
     bb.utils.mkdirhier(license_image_dir)
     from oe.rootfs import image_list_installed_packages
     from oe.utils import format_pkg_list
@@ -49,7 +49,7 @@ python license_create_manifest() {
             pkg_dic[pkg_name]["LICENSE"] = pkg_dic[pkg_name][pkg_lic_name]
 
     rootfs_license_manifest = os.path.join(d.getVar('LICENSE_DIRECTORY'),
-                        d.getVar('IMAGE_NAME'), 'license.manifest')
+                        d.getVar('SSTATE_PKGARCH'), d.getVar('IMAGE_NAME'), 'license.manifest')
     write_license_files(d, rootfs_license_manifest, pkg_dic, rootfs=True)
 }
 
@@ -59,6 +59,8 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs=True):
 
     bad_licenses = (d.getVar("INCOMPATIBLE_LICENSE") or "").split()
     bad_licenses = expand_wildcard_licenses(d, bad_licenses)
+    pkgarchs = d.getVar("SSTATE_ARCHS").split()
+    pkgarchs.reverse()
 
     exceptions = (d.getVar("INCOMPATIBLE_LICENSE_EXCEPTIONS") or "").split()
     with open(license_manifest, "w") as license_file:
@@ -98,9 +100,13 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs=True):
                 license_file.write("FILES: %s\n\n" % pkg_dic[pkg]["FILES"])
 
             for lic in pkg_dic[pkg]["LICENSES"]:
-                lic_file = os.path.join(d.getVar('LICENSE_DIRECTORY'),
-                                        pkg_dic[pkg]["PN"], "generic_%s" % 
-                                        re.sub(r'\+', '', lic))
+                for pkgarch in pkgarchs:
+                    lic_file = os.path.join(d.getVar('LICENSE_DIRECTORY'),
+                                            pkgarch,
+                                            pkg_dic[pkg]["PN"], "generic_%s" %
+                                            re.sub(r'\+', '', lic))
+                    if os.path.exists(lic_file):
+                        break
                 # add explicity avoid of CLOSED license because isn't generic
                 if lic == "CLOSED":
                    continue
@@ -130,8 +136,13 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs=True):
             for pkg in sorted(pkg_dic):
                 pkg_rootfs_license_dir = os.path.join(rootfs_license_dir, pkg)
                 bb.utils.mkdirhier(pkg_rootfs_license_dir)
-                pkg_license_dir = os.path.join(d.getVar('LICENSE_DIRECTORY'),
-                                            pkg_dic[pkg]["PN"]) 
+                for pkgarch in pkgarchs:
+                    pkg_license_dir = os.path.join(d.getVar('LICENSE_DIRECTORY'),
+                                                   pkgarch, pkg_dic[pkg]["PN"])
+                    if os.path.exists(pkg_license_dir):
+                        break
+                if not os.path.exists(pkg_license_dir ):
+                    bb.fatal("Couldn't find license information for dependency %s" % pkg)
 
                 pkg_manifest_licenses = [canonical_license(d, lic) \
                         for lic in pkg_dic[pkg]["LICENSES"]]
@@ -183,7 +194,7 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs=True):
                     os.lchown(p, 0, 0)
                     os.chmod(p, stat.S_IRWXU | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH | stat.S_IXOTH)
 
-
+write_license_files[vardepsexclude] = "SSTATE_ARCHS"
 
 def license_deployed_manifest(d):
     """
@@ -195,6 +206,8 @@ def license_deployed_manifest(d):
     dep_dic = {}
     man_dic = {}
     lic_dir = d.getVar("LICENSE_DIRECTORY")
+    pkgarchs = d.getVar("SSTATE_ARCHS").split()
+    pkgarchs.reverse()
 
     dep_dic = get_deployed_dependencies(d)
     for dep in dep_dic.keys():
@@ -204,12 +217,19 @@ def license_deployed_manifest(d):
         man_dic[dep]["PN"] = dep
         man_dic[dep]["FILES"] = \
             " ".join(get_deployed_files(dep_dic[dep]))
-        with open(os.path.join(lic_dir, dep, "recipeinfo"), "r") as f:
+
+        for pkgarch in pkgarchs:
+            licfile = os.path.join(lic_dir, pkgarch, dep, "recipeinfo")
+            if os.path.exists(licfile):
+                break
+        if not os.path.exists(licfile):
+            bb.fatal("Couldn't find license information for dependency %s" % dep)
+        with open(licfile, "r") as f:
             for line in f.readlines():
                 key,val = line.split(": ", 1)
                 man_dic[dep][key] = val[:-1]
 
-    lic_manifest_dir = os.path.join(d.getVar('LICENSE_DIRECTORY'),
+    lic_manifest_dir = os.path.join(d.getVar('LICENSE_DIRECTORY'), d.getVar('SSTATE_PKGARCH'),
                                     d.getVar('IMAGE_NAME'))
     bb.utils.mkdirhier(lic_manifest_dir)
     image_license_manifest = os.path.join(lic_manifest_dir, 'image_license.manifest')
@@ -217,7 +237,7 @@ def license_deployed_manifest(d):
 
     link_name = d.getVar('IMAGE_LINK_NAME')
     if link_name:
-        lic_manifest_symlink_dir = os.path.join(d.getVar('LICENSE_DIRECTORY'),
+        lic_manifest_symlink_dir = os.path.join(d.getVar('LICENSE_DIRECTORY'), d.getVar('SSTATE_PKGARCH'),
                                     link_name)
         # remove old symlink
         if os.path.islink(lic_manifest_symlink_dir):
@@ -227,6 +247,8 @@ def license_deployed_manifest(d):
         if lic_manifest_dir != lic_manifest_symlink_dir:
             os.symlink(lic_manifest_dir, lic_manifest_symlink_dir)
 
+license_deployed_manifest[vardepsexclude] = "SSTATE_ARCHS"
+
 def get_deployed_dependencies(d):
     """
     Get all the deployed dependencies of an image
@@ -255,7 +277,7 @@ def get_deployed_dependencies(d):
                 break
 
     return deploy
-get_deployed_dependencies[vardepsexclude] = "BB_TASKDEPDATA"
+get_deployed_dependencies[vardepsexclude] = "BB_TASKDEPDATA SSTATE_ARCHS"
 
 def get_deployed_files(man_file):
     """