Fix python path for gyp.

Fix python path for gyp.

BUG=
R=jochen@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=18974

[Michael Achenbach, 2014-01-31 08:56:51]

PTAL. I wonder why we didn't need that before... but after running make
dependencies now after the last gyp update, it looks like that the system is
using the wrong gyp from python when running the stand-alone make.

[jochen (gone - plz use gerrit), 2014-01-31 08:59:58]

lgtm

[Michael Achenbach, 2014-01-31 09:02:17]

Hum - "sudo apt-get remove gyp" did the trick... then I'd rather not commit
this.

[jochen (gone - plz use gerrit), 2014-01-31 09:07:22]

On 2014/01/31 09:02:17, Michael Achenbach wrote:
> Hum - "sudo apt-get remove gyp" did the trick... then I'd rather not commit
> this.

We often get questions about this on v8-users@... I think it might be a
worthwhile change

[Jakob Kummerow, 2014-01-31 09:07:46]

On 2014/01/31 09:02:17, Michael Achenbach wrote:
> then I'd rather not commit this.

I was about to say: in the interest of being more robust towards various system
configurations, I'd be fine with landing this nevertheless.

[Michael Achenbach, 2014-01-31 09:09:09]

Ok - agreed. It is more consistent if "make dependencies" and "make xxx" match
the same gyp, independent of any system settings.

[Michael Achenbach, 2014-01-31 09:09:49]

Committed patchset #1 manually as r18974 (presubmit successful).

[Nico, 2014-06-24 04:35:14]

Are you sure this does anything?

Nicos-MacBook-Pro:tmp thakis$ cat Makefile 
foo:
	PYTHONPATH="$(shell pwd)/tools/generate_shim_headers:$(PYTHONPATH)" \
	PYTHONPATH="$(shell pwd)/build/gyp/pylib:$(PYTHONPATH)" \
	bash -c 'echo $${PYTHONPATH}'

.PHONY: foo
Nicos-MacBook-Pro:tmp thakis$ make
PYTHONPATH="/Users/thakis/src/tmp/tools/generate_shim_headers:" \
	PYTHONPATH="/Users/thakis/src/tmp/build/gyp/pylib:" \
	bash -c 'echo ${PYTHONPATH}'
/Users/thakis/src/tmp/build/gyp/pylib:


Looks like the first path is just ignored…

[Michael Achenbach, 2014-06-25 07:11:20]

On 2014/06/24 04:35:14, Nico (away) wrote:
> Are you sure this does anything?
> 
> Nicos-MacBook-Pro:tmp thakis$ cat Makefile 
> foo:
> 	PYTHONPATH="$(shell pwd)/tools/generate_shim_headers:$(PYTHONPATH)" \
> 	PYTHONPATH="$(shell pwd)/build/gyp/pylib:$(PYTHONPATH)" \
> 	bash -c 'echo $${PYTHONPATH}'
> 
> .PHONY: foo
> Nicos-MacBook-Pro:tmp thakis$ make
> PYTHONPATH="/Users/thakis/src/tmp/tools/generate_shim_headers:" \
> 	PYTHONPATH="/Users/thakis/src/tmp/build/gyp/pylib:" \
> 	bash -c 'echo ${PYTHONPATH}'
> /Users/thakis/src/tmp/build/gyp/pylib:
> 
> 
> Looks like the first path is just ignored…

Interesting. I wonder why we could live without generate_shim_headers in our
path?