# Build fails on NetBSD

```
fs_util.cc: In function 'std::optional<std::filesystem::__cxx11::path> lnav::filesystem::self_path()':
fs_util.cc:54:18: error: 'PROC_PIDPATHINFO_MAXSIZE' was not declared in this scope
   54 |     char pathbuf[PROC_PIDPATHINFO_MAXSIZE];
      |                  ^~~~~~~~~~~~~~~~~~~~~~~~
fs_util.cc:56:33: error: 'pathbuf' was not declared in this scope
```

constant `PROC_PIDPATHINFO_MAXSIZE` not defined
 - on macOS: `MacOSX.sdk/usr/include/sys/proc_info.h:#define PROC_PIDPATHINFO_MAXSIZE        (4*MAXPATHLEN)`
method `proc_pidpath` not defined
 - on macOS: `MacOSX.sdk/usr/include/libproc.h:int proc_pidpath(int pid, void * buffer, uint32_t  buffersize) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);`

