if kernel_dir == ''
# use default path for native builds
kernel_version = run_command('uname', '-r').stdout().strip()
if kernel_dir == ''
# use default path for native builds
kernel_version = run_command('uname', '-r').stdout().strip()
-make_returncode = run_command('make', '-sC', kernel_dir,
+make_returncode = run_command('make', '-sC', kernel_dir + '/build',
'kernelversion').returncode()
if make_returncode != 0
warning('Cannot compile kernel modules as requested - are kernel headers installed?')
'kernelversion').returncode()
if make_returncode != 0
warning('Cannot compile kernel modules as requested - are kernel headers installed?')