[Pythonmac-SIG] Building compatible dependencies

[Russell E. Owen]

In article <DE3C03BF-1749-4171-B5A9-2A4B5EE5774A at mac.com>,
 Ronald Oussoren <ronaldoussoren at mac.com> wrote:

> On 11 Jun 2014, at 17:58, Chris Barker <Chris.Barker at noaa.gov> wrote:
> 
> > Hi folks,
> > 
> > I know it'a at least theoretically possible to build libs under 10.9 that 
> > will work on 10.6 -- specifically compatible with the python.org python 
> > binaries.
> > 
> > But I"m having trouble finding documentation of what flags you need.
> > 
> > MACOSX_DEPLOYMENT_TARGET=10.6
> > 
> > should be required -- but anything else?
> > 
> > personally, I've solved this by building on the oldest machine I want to 
> > support, but that's not always possible anymore.
> > 
> > Anyone have an example?
> 
> Setting MACOSX_DEPLOYMENT_TARGET should be enough, but you may need to do 
> more work depending on the code that you try to build. In particular, code 
> using configure scripts might find APIs or libraries that are available on 
> 10.9 and not on 10.6. 

Also, X11 moved at one point. If you build on too new a machine then any 
attempt to use X11 will work on older operating systems.

- Russell