qemuboot: don't fail when QB_DEFAULT_KERNEL isn't symlink

* in some cases we might set QB_DEFAULT_KERNEL to the real filename
  instead of symlink and then this whole readlink work around actually
  breaks the build, because os.readlink fails on normal files:

  >>> os.readlink('deploy/images/qemux86/bzImage-linux-yocto-qemux86-master-20160927084848.bin')
  'bzImage-linux-yocto-qemux86.bin'
  >>> os.readlink('deploy/images/qemux86/bzImage-linux-yocto-qemux86.bin')
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  OSError: [Errno 22] Invalid argument: '/jenkins/mjansa/build-starfish-master-mcf/BUILD/deploy/images/qemux86/bzImage-linux-yocto-qemux86.bin'

(From OE-Core rev: a11d0d8641b7dfb05c78645cf21f2c04a08c4822)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/qemuboot.bbclass b/meta/classes/qemuboot.bbclass
index 97a235772d..ef9a128796 100644
--- a/meta/classes/qemuboot.bbclass
+++ b/meta/classes/qemuboot.bbclass
@@ -69,7 +69,7 @@ python write_qemuboot_conf() {
     # to the kernel file, which hinders relocatability of the qb conf.
     # Read the link and replace it with the full filename of the target.
     kernel_link = os.path.join(d.getVar('DEPLOY_DIR_IMAGE', True), d.getVar('QB_DEFAULT_KERNEL', True))
-    kernel = os.readlink(kernel_link)
+    kernel = os.path.realpath(kernel_link)
     cf.set('config_bsp', 'QB_DEFAULT_KERNEL', kernel)
 
     bb.utils.mkdirhier(os.path.dirname(qemuboot))