port a node addon from node-waf to node-gyp

[NodeNinja]

I am trying to build this  https://github.com/substack/node-bigint module on linux

I was previously built with node-waf but I am trying to build it with node-gyp to use in on the most recent versions of node.

I have a bindings.gyp file as under.

{

  "targets": [

{

 "target_name": "bigint",

 "sources": [ "bigint.cc" ]

}

]

}

However with this file the module builds successfuly but I don't think it is linked to libgmp that it needs to function correctly.

How do link libgmp to that module.

I have installed gmp5.0.5 on my linux system but I don't seem to find it in usr/bin; usr/local/bin etc.

[Ben Noordhuis]

'libraries': ['-lgmp'] should do it.

[NodeNinja]

'libraries': ['-lgmp'] should do it.

That seems to work out my updated binding.gyp is as under

{

  "targets": [

{

 "target_name": "bigint",

 "sources": [ "bigint.cc" ],

                  "libraries": ["-lgmp"]

}

]

}

However when I check the size of the final compiled "bigint.node" file it is showing much lower size that previous builds

node-waf linux      - 204kb with libgmp

node-gyp on win   - 274kb   with mpir instead of libgmp

node-gyp on linux - 58Kb with libgmp 

Is libgmp being dynamically linked to bigint or am I messing up somewhere else?

[mscdex]

On Sep 26, 12:54 pm, NodeNinja <aeon6f...@gmail.com> wrote:
> Is libgmp being dynamically linked to bigint or am I messing up somewhere
> else?

Yes it should be dynamically linked now. You can double check by doing
`ldd /path/to/binding.node`.

[NodeNinja]

On Thursday, September 27, 2012 12:11:08 AM UTC+5:30, mscdex wrote:

Yes it should be dynamically linked now. You can double check by doing
`ldd /path/to/binding.node`.

I think you meant `ldd /path/to/bigint.node`. 

and it prints out:

linux-gate.so.1 (0xb779f000)

libgmp.so.10 => /usr/lib/libgmp.so.10 (0xb7722000)

libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb763a000)

libm.so.6 => /usr/lib/libm.so.6 (0xb75fa000)

libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0xb75dd000)

libpthread.so.0 => /usr/lib/libpthread.so.0 (0xb75c2000)

libc.so.6 => /usr/lib/libc.so.6 (0xb7416000)

/usr/lib/ld-linux.so.2 (0xb77a0000) 

Not that I understand what this means but since its printing out libgmp at some places seems like its linked to it.

Don't understand what the so.1 or so.6 is though...

[mscdex]

On Sep 26, 3:11 pm, NodeNinja <aeon6f...@gmail.com> wrote:
> libgmp.so.10 => /usr/lib/libgmp.so.10 (0xb7722000)

This means it is dynamically linking to libgmp. So you should be good
to go.