Makefile.am:140: warning: source file 'os_win32/popen_win32.cpp' is in a subdirectory,
Makefile.am:140: but option 'subdir-objects' is disabled
automake: warning: possible forward-incompatibility.
automake: At least one source file is in a subdirectory, but the 'subdir-objects'
automake: automake option hasn't been enabled.  For now, the corresponding output
automake: object file(s) will be placed in the top-level directory.  However, this
automake: behavior may change in a future Automake major version, with object
automake: files being placed in the same subdirectory as the corresponding sources.
automake: You are advised to start using 'subdir-objects' option throughout your
automake: project, to avoid future incompatibility.
Makefile.am:238: warning: source file 'getopt/getopt.c' is in a subdirectory,
Makefile.am:238: but option 'subdir-objects' is disabled
Makefile.am:238: warning: source file 'getopt/getopt1.c' is in a subdirectory,
Makefile.am:238: but option 'subdir-objects' is disabled
Makefile.am:258: warning: source file 'regex/regex.c' is in a subdirectory,
Makefile.am:258: but option 'subdir-objects' is disabled
Makefile.am:283: warning: source file 'os_win32/wmiquery.cpp' is in a subdirectory,
Makefile.am:283: but option 'subdir-objects' is disabled
Makefile.am:269: warning: source file 'regex/regcomp.c' is in a subdirectory,
Makefile.am:269: but option 'subdir-objects' is disabled
Makefile.am:269: warning: source file 'regex/regexec.c' is in a subdirectory,
Makefile.am:269: but option 'subdir-objects' is disabled
Makefile.am:269: warning: source file 'regex/regex_internal.c' is in a subdirectory,
Makefile.am:269: but option 'subdir-objects' is disabled
Makefile.am:223: warning: source file 'os_win32/daemon_win32.cpp' is in a subdirectory,
Makefile.am:223: but option 'subdir-objects' is disabled
Makefile.am:223: warning: source file 'os_win32/popen_win32.cpp' is in a subdirectory,
Makefile.am:223: but option 'subdir-objects' is disabled
Makefile.am:223: warning: source file 'os_win32/syslog_win32.cpp' is in a subdirectory,
Makefile.am:223: but option 'subdir-objects' is disabled
Makefile.am:246: warning: source file 'getopt/getopt.c' is in a subdirectory,
Makefile.am:246: but option 'subdir-objects' is disabled
Makefile.am:246: warning: source file 'getopt/getopt1.c' is in a subdirectory,
Makefile.am:246: but option 'subdir-objects' is disabled
Makefile.am:263: warning: source file 'regex/regex.c' is in a subdirectory,
Makefile.am:263: but option 'subdir-objects' is disabled
Makefile.am:288: warning: source file 'os_win32/wmiquery.cpp' is in a subdirectory,
Makefile.am:288: but option 'subdir-objects' is disabled
Makefile.am:274: warning: source file 'regex/regcomp.c' is in a subdirectory,
Makefile.am:274: but option 'subdir-objects' is disabled
Makefile.am:274: warning: source file 'regex/regexec.c' is in a subdirectory,
Makefile.am:274: but option 'subdir-objects' is disabled
Makefile.am:274: warning: source file 'regex/regex_internal.c' is in a subdirectory,
Makefile.am:274: but option 'subdir-objects' is disabled
smartd.cpp: In function ‘void capabilities_drop_now()’:
smartd.cpp:1059:14: warning: ignoring return value of ‘int capng_apply(capng_select_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
 1059 |   capng_apply(CAPNG_SELECT_BOTH);
      |   ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~