`shared_library` support

[indutny]

gyp.js currently supports static_library, executable, and none target_type, but shared_library is very important for Node.js addons! Therefore we need to support it in ninja.

Hints:

• New ninja rule solink needs to be added here
• This rule should be used there

Possible problems - many.

Support:

• OS X
• Windows
• Linux
• FreeBSD (needs verification, should work)
• Others (needs verification, should work)

[indutny]

Could be tested on https://github.com/indutny/llnode

[indutny]

I'm going to take OS X support for this.

[indutny]

OS X - done.

[indutny]

Linux - appears to be working.

[indutny]

I'm inclined to say that FreeBSD and other Unixes should work, but this needs a verification.

[indutny]

Anyone wants to verify this?

[kapouer]

Hey i'd like to ! Could you tell me where i should start ? llnode seems to be something different.

[indutny]

@kapouer thank you!

@pmed you said that you tested windows shared_library support on node.js addons, would you care to share some info on this with us? Thanks!

[indutny]

@kapouer llnode may be a bit too complicated. However, if you want to give it a shot, the way to do it is:

• Install node.js on the system
• Install ninja from https://ninja-build.org/
• npm install -g gyp.js
• git clone git@github.com:indutny/llnode.git && cd llnode
• Install lldb-3.8 or any lldb, and its headers (Honestly, I don't know how to do it on FreeBSD, or anywhere else except Mac and Linux)
• run gyp -Icommon.gypi llnode.gyp
• run ninja -C out/Release
• ls -la out/Release
• should have llnode.so

[indutny]

Alright, I have pushed gyppies to the repo. So it should be possible to test this by just running npm test. Note that tests should be run from MSVS console on Windows, and the NINJA env variable should be set to the full path to ninja.exe.