It was working on Linux because _GNU_SOURCE gets us POSIX.1-2008
compatibility, but not on macOS or the BSDs. There, we were still stuck
to full second precision.
This commit uses the template trick introduced by the futimes code
(which itself was inspired by commit 2fb42eb4af
in QtNetwork). Also note how it adds support for birth time, if the
system's stat struct has that information.
Tested to work on MacOS and FreeBSD. The manual filetest produces:
Name: .
Path: . (/usr/home/tjmaciei/src/qt/qt5)
Size: 1536 Type: Directory
Attrs: readable writable executable hidden nativepath
Mode: drwxr-xr-x
Owner: tjmaciei (1001) Group: tjmaciei (1001)
Access: 2017-07-13T20:03:47.916
Birth: 2017-07-13T20:03:47.916
Change: 2017-07-13T20:04:41.648
Modified: 2017-07-13T20:04:41.648
Linux will require support for statx(2).
Change-Id: I8d96dea9955d4c749b99fffd14cd97d7a8c6d45d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
5a9b1425e1