Re: [MacPorts] #43203: dbus not building on 10.6.8. ‘O_CLOEXEC’ undeclared

[MacPorts]

#43203: dbus not building on 10.6.8. ‘O_CLOEXEC’ undeclared
------------------------+--------------------------------
  Reporter:  gnurser@…  |      Owner:  macports-tickets@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.2.1
Resolution:             |   Keywords:
      Port:             |
------------------------+--------------------------------

Comment (by egall@…):

 `O_CLOEXEC` is normally defined in `fcntl.h`, but the `fcntl.h` from
 Darwin's Libc is just a wrapper around `<sys/fcntl.h>`. I am also on Snow
 Leopard, so I checked my `<sys/fcntl.h>`, and can confirm that I do not
 have `O_CLOEXEC` in mine, either. I tried checking newer versions the
 Darwin Libc sources on opensource.apple.com, but could not find where
 `<sys/fcntl.h>` is located in there... Anyways, the next thing I checked
 was Gnulib, and Gnulib's `fcntl.h` defines `O_CLOEXEC` like this:
 {{{
 #if !defined O_CLOEXEC && defined O_NOINHERIT
 /* Mingw spells it 'O_NOINHERIT'.  */
 # define O_CLOEXEC O_NOINHERIT
 #endif

 #ifndef O_CLOEXEC
 # define O_CLOEXEC 0
 #endif
 }}}
 Gnulib also provides a `cloexec.c` file and a `cloexec.h` file that, taken
 together, actually implement the functionality that the `O_CLOEXEC` flag
 represents. `dbus` could try using these in cases when `O_CLOEXEC` is not
 available...

-- 
Ticket URL: <https://trac.macports.org/ticket/43203#comment:1>
MacPorts <http://www.macports.org/>
Ports system for OS X