Issues addressed:
- xcode build failed with
... was built for newer OSX version (10.10) than being linked (10.5)
fixed by setting GYP mac deployment target to the nix value
- a gyp bug when SDKROOT is not set (and removed an orphaned gyp patch
- path to python in generated gyp-mac-tool
- noisy build due to static assert warnings, by silencing warnings
- use of system xcodebuild and libtool replaced by darwin.cctools
The build was originally failing due to a missing libtool. Trying to add
the buildInput "libtool" did not work out, since a few command line
arguments are not supported. I've applied the same workaround as for
"xcodebuild".
The second change is about the install step, where the path of
"libv8.dylib" was just slightly different.
