In file included from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33:0,
                 from /usr/include/stdio.h:27,
                 from gen_uuid.c:46:
/usr/include/features.h:183:3: warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Wcpp]
 # warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
   ^~~~~~~
gen_uuid.c: In function 'get_clock':
gen_uuid.c:297:10: warning: implicit declaration of function 'flock' [-Wimplicit-function-declaration]
   while (flock(state_fd, LOCK_EX) < 0) {
          ^~~~~
randutils.c: In function 'random_get_fd':
randutils.c:41:2: warning: implicit declaration of function 'gettimeofday' [-Wimplicit-function-declaration]
  gettimeofday(&tv, 0);
  ^~~~~~~~~~~~
ar: `u' modifier ignored since `D' is the default (see `U')
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY