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port a node addon from node-waf to node-gyp
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NodeNinja  
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 More options Sep 26 2012, 12:01 pm
From: NodeNinja <aeon6f...@gmail.com>
Date: Wed, 26 Sep 2012 09:01:00 -0700 (PDT)
Subject: port a node addon from node-waf to node-gyp
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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.


 
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Ben Noordhuis  
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 More options Sep 26 2012, 12:13 pm
From: Ben Noordhuis <i...@bnoordhuis.nl>
Date: Wed, 26 Sep 2012 18:13:46 +0200
Local: Wed, Sep 26 2012 12:13 pm
Subject: Re: [nodejs] port a node addon from node-waf to node-gyp
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'libraries': ['-lgmp'] should do it.

 
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NodeNinja  
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 More options Sep 26 2012, 12:54 pm
From: NodeNinja <aeon6f...@gmail.com>
Date: Wed, 26 Sep 2012 09:54:23 -0700 (PDT)
Local: Wed, Sep 26 2012 12:54 pm
Subject: Re: [nodejs] port a node addon from node-waf to node-gyp
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> '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?


 
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mscdex  
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 More options Sep 26 2012, 2:41 pm
From: mscdex <msc...@gmail.com>
Date: Wed, 26 Sep 2012 11:40:57 -0700 (PDT)
Local: Wed, Sep 26 2012 2:40 pm
Subject: Re: port a node addon from node-waf to node-gyp
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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`.

 
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NodeNinja  
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 More options Sep 26 2012, 3:11 pm
From: NodeNinja <aeon6f...@gmail.com>
Date: Wed, 26 Sep 2012 12:11:22 -0700 (PDT)
Local: Wed, Sep 26 2012 3:11 pm
Subject: Re: port a node addon from node-waf to node-gyp
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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...


 
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mscdex  
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 More options Sep 26 2012, 4:57 pm
From: mscdex <msc...@gmail.com>
Date: Wed, 26 Sep 2012 13:56:50 -0700 (PDT)
Local: Wed, Sep 26 2012 4:56 pm
Subject: Re: port a node addon from node-waf to node-gyp
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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.

 
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