https://bugs.gentoo.org/560212 pull in headers for funcs that are used --- a/libdm/dm_handle2path.c +++ b/libdm/dm_handle2path.c @@ -20,6 +20,9 @@ #include <dmapi_kern.h> #include "dmapi_lib.h" +#include <fcntl.h> /* open */ +#include <unistd.h> /* close */ +#include <string.h> /* strlen */ #include <mntent.h> #include <dirent.h> #ifdef linux