Error installing avr-libc

Brandon Allbery allbery.b at
Mon Feb 3 10:29:10 PST 2014

On Mon, Feb 3, 2014 at 12:51 PM, Dan Aldrich <daldrich at> wrote:

> Get this error trying to install avr-libc, is this conflicting with
> another macport app installed?
> sudo port install avr-libc
> Password:
> --->  Computing dependencies for avr-libc
> --->  Cleaning avr-libc

This is not an error, it is an indication that avr-libc is already

> --->  Scanning binaries for linking errors: 100.0%

Everything from here on is a sanity check that MacPorts runs on itself, and
is (usually) not directly related to what you otherwise asked it to do.

> --->  Configuring webkit-gtk3
> Error: webkit-gtk3 is not supported for this installation of MacPorts.  It
> requires libc++ be selected as your C++ runtime.  Please use
> webkit-gtk3-2.0 instead

This is not related to avr-libc. It's actually a victim of Apple changing
the way C++ works with Xcode 5 and Mavericks, which has an effect even on
other releases.

It is telling you that a port that you already have installed (webkit-gtk3)
had to be changed to only work with Xcode 5.0.2 and later (clang's C++
runtime), and that if you are not running those then you must remove
webkit-gtk3 and install webkit-gtk3-2.0 instead (gcc's C++ runtime). If you
later upgrade your OS or Xcode, you will again have to remove
webkit-gtk3-2.0 and install webkit-gtk3.

brandon s allbery kf8nh                               sine nomine associates
allbery.b at                                  ballbery at
unix, openafs, kerberos, infrastructure, xmonad
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