kernel/image/depmodwrapper: Fixups for depmod

With the rpm package backend enabled, running:

bitbake <image>
bitbake virtual/kernel -c clean
bitbake <image> -c rootfs -f

results in an image with incorrect kernel module dependency information.
The problem is that the System.map and kernel-abiversion files are needed
for depmod and after the recent kernel changes, these are no longer in
sstate.

Its reasonable to require the kernel to unpack/build if you're
about to build a module against it. It is not reasonable to require this
just to build a rootfs.

Therefore stash the needed files specifically for depmod.

Also fix some STAGING_KERNEL_DIR references which were incorrect, found
whilst sorting through his change.

(From OE-Core rev: b851504dcf5e147c9efb1c7b6a4d22c1a1a87cd7)

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

1 files changed, 8 insertions, 7 deletions

diff --git a/meta/lib/oe/rootfs.py b/meta/lib/oe/rootfs.py
index f2891a7043..72d32f7899 100644
--- a/meta/lib/oe/rootfs.py
+++ b/meta/lib/oe/rootfs.py
@@ -209,16 +209,17 @@ class Rootfs(object):
                                   'new', '-v'])
 
     def _generate_kernel_module_deps(self):
-        kernel_abi_ver_file = os.path.join(self.d.getVar('STAGING_KERNEL_BUILDDIR', True),
+        kernel_abi_ver_file = oe.path.join(self.d.getVar('STAGING_DIR_TARGET', True), self.d.getVar('datadir', True), "kernel-depmod",
                                            'kernel-abiversion')
-        if os.path.exists(kernel_abi_ver_file):
-            kernel_ver = open(kernel_abi_ver_file).read().strip(' \n')
-            modules_dir = os.path.join(self.image_rootfs, 'lib', 'modules', kernel_ver)
+        if not os.path.exists(kernel_abi_ver_file):
+            bb.fatal("No kernel-abiversion file found (%s), cannot run depmod, aborting" % kernel_abi_ver_file)
 
-            bb.utils.mkdirhier(modules_dir)
+        kernel_ver = open(kernel_abi_ver_file).read().strip(' \n')
+        modules_dir = os.path.join(self.image_rootfs, 'lib', 'modules', kernel_ver)
 
-            self._exec_shell_cmd(['depmodwrapper', '-a', '-b', self.image_rootfs,
-                                  kernel_ver])
+        bb.utils.mkdirhier(modules_dir)
+
+        self._exec_shell_cmd(['depmodwrapper', '-a', '-b', self.image_rootfs, kernel_ver])
 
     """
     Create devfs: