====== 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;
      |                                        ^~~~
 ====== 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 ======