Don't serialize linking for the make generator by default

Don't serialize linking for the make generator by default

Instead, projects that want this feature should define a LINK_wrapper

BUG=none
R=thakis@chromium.org

Committed: https://code.google.com/p/gyp/source/detail?r=2022

[jochen (gone - plz use gerrit), 2015-01-09 14:12:09]

ptal

v8 still uses the make generator, however, we used to override LINK by default
to get parallel linking.

It's rather difficult, however, to always guess the right LINK command, so I'd
rather just switch the default of gyp

ptal

[Nico, 2015-01-10 01:14:35]

Does setting LINK to '$(CXX.target)' do the right thing for you?

[jochen (gone - plz use gerrit), 2015-01-12 08:30:33]

On 2015/01/10 at 01:14:35, thakis wrote:
> Does setting LINK to '$(CXX.target)' do the right thing for you?

well, not in the gyp file, no (setting it in make_global_default_settings).

[Nico, 2015-01-12 16:18:24]

On 2015/01/12 08:30:33, jochen (slow) wrote:
> On 2015/01/10 at 01:14:35, thakis wrote:
> > Does setting LINK to '$(CXX.target)' do the right thing for you?
> 
> well, not in the gyp file, no (setting it in make_global_default_settings).

What goes wrong?

[jochen (gone - plz use gerrit), 2015-01-13 10:52:13]

On 2015/01/12 at 16:18:24, thakis wrote:
> On 2015/01/12 08:30:33, jochen (slow) wrote:
> > On 2015/01/10 at 01:14:35, thakis wrote:
> > > Does setting LINK to '$(CXX.target)' do the right thing for you?
> > 
> > well, not in the gyp file, no (setting it in make_global_default_settings).
> 
> What goes wrong?

The LINK ?= $(CXX.target) line is emitted before the LINK ?= flock line in the
Makefile, so it doesn't do anything

[Nico, 2015-01-13 15:55:38]

Ah, I see. lgtm, this seems simpler than making it work. Thanks!

[jochen (gone - plz use gerrit), 2015-01-14 10:40:45]

Committed patchset #1 (id:1) manually as r2022 (presubmit successful).