====== Cleaning ======
Makefile:4: *** Package alsa not found, please install alsa development package or add directory containing `alsa.pc` in PKG_CONFIG_PATH.  Stop.
../../../scripts/Makefile.include:4: *** O=build_tools/ does not exist.  Stop.
 ====== Baseline building the tree ======
Makefile:4: *** Package alsa not found, please install alsa development package or add directory containing `alsa.pc` in PKG_CONFIG_PATH.  Stop.
robust_list.c: In function ‘child_circular_list’:
robust_list.c:522:24: warning: storing the address of local variable ‘a’ in ‘head.list.next’ [-Wdangling-pointer=]
  522 |         head.list.next = &a.list;
      |         ~~~~~~~~~~~~~~~^~~~~~~~~
robust_list.c:513:28: note: ‘a’ declared here
  513 |         struct lock_struct a, b, c;
      |                            ^
robust_list.c:512:40: note: ‘head’ declared here
  512 |         static struct robust_list_head head;
      |                                        ^~~~
In file included from iommufd_utils.h:11,
                 from iommufd.c:12:
In function ‘_test_cmd_get_hw_info’,
    inlined from ‘iommufd_ioas_get_hw_info’ at iommufd.c:791:3,
    inlined from ‘wrapper_iommufd_ioas_get_hw_info’ at iommufd.c:751:1:
iommufd_utils.h:873:37: warning: array subscript ‘struct iommu_test_hw_info[0]’ is partly outside array bounds of ‘struct iommu_test_hw_info_buffer_smaller[1]’ [-Warray-bounds=]
  873 |                         assert(!info->flags);
      |                                 ~~~~^~~~~~~
iommufd.c: In function ‘wrapper_iommufd_ioas_get_hw_info’:
iommufd.c:760:11: note: object ‘buffer_smaller’ of size 4
  760 |         } buffer_smaller;
      |           ^~~~~~~~~~~~~~
 ====== Building the tree before the patch ======
Makefile:4: *** Package alsa not found, please install alsa development package or add directory containing `alsa.pc` in PKG_CONFIG_PATH.  Stop.
 ====== Checking if tree is clean ======
 ====== Building the tree with the patch ======
Makefile:4: *** Package alsa not found, please install alsa development package or add directory containing `alsa.pc` in PKG_CONFIG_PATH.  Stop.
 ====== Checking if tree is clean ======