Node-gyp: How to add dependence to static library in binding.gyp?

[AlexAtNet]

I did not find in the documentation how to add static library to binding.gyp?

I've successfully compiled my node.js extension with reference to the shared library as follows:

    {
      "targets": [
        {
          "target_name": "myext",
          "sources": [
            "code/main.cpp",
            "code/load.cpp",
            "include/load.h"
          ],
          "include_dirs": [
            "include", "../Library/include"
          ],
          "libraries": [
            "-lmylib", "-L/home/admin/MyLib/Library/binaries/linux/Release"
          ],
          "cflags!": [ "-fno-exceptions" ],
          "cflags": [ "-std=c++11" ],
          "cflags_cc!": [ "-fno-exceptions" ]
        }
      ]
    }

and now want to add static version of the library to the extension to avoid libray loading issues. Is this possible?

Thanks!

[TooTallNate]

Just specify the path the to the static .a file in the "libraries" section:

  "libraries": [ "/usr/local/lib/mylib.a" ]

[AlexAtNet]

thanks, the answer is helpful

[Vimos]

I have a similar problem,
my static library is in "deps/csk2". I got

"g++: error: ./deps/csk2/libcsk2_linux_x64.a: No such file or directory"

But if I change the library path to absolute path("/home/vimos/Public/git/lm-redis/klm/node-sri/deps/csk2/libcsk2_<(OS)_x64.a"), no error reports.

Why？

[ashish0389]

Thank you for your answer @TooTallNate . It's really helpful.

[peiyun007]

@Vimos , you can write like this: "libraries": [ "-Wl,-rpath, mylib.a" ] . This can work.

[Embedded4development]

if i want to link shared library then i need to just replace .a with .so or anything else do i need to do?

[bnoordhuis]

@Embedded4development 'libraries': ['-L/path/to/dir', '-lfoo'] if the shared object is called libfoo.so. The -L switch is only necessary when it's not in a standard location. You may also want to pass -Wl,-rpath in that case.

[Embedded4development]

@bnoordhuis
if i have multiple libraries then what would be perfect syntax to map library name & respective path?

[bnoordhuis]

@Embedded4development 'libraries': ['-lfoo', '-lbar', '-lbaz'] - add search directories and rpaths if necessary.

[Embedded4development]

@bnoordhuis Thanks for useful response..

[drFabio]

I am compiling on Windows and as I saw the file get's compiled but the static library is not embedded on the code, is there a way for the generated .node file to have the static library embbedded on it's code? So that the client does not need to have a dll.

[bnoordhuis]

@drFabio If you have a dll, it's not a static library.

[drFabio]

@bnoordhuis I have a .lib but the generated .node file when inspected with dependency walker says it's needing the dll.
It compiles without error , but when in use on the windows machine if the user does not have a registered dll it does not work.

[bnoordhuis]

@drFabio Where does the lib file come from? Who or what produces it?

[drFabio]

It is libeay32.lib I use the lib that comes from the installer in from
http://slproweb.com/products/Win32OpenSSL.html that is recommended on
https://github.com/nodejs/node-gyp/wiki/Linking-to-OpenSSL

On Aug 3, 2016 5:00 PM, "Ben Noordhuis" [email protected] wrote:

@drFabio https://github.com/drFabio Where does the lib file come from?
Who or what produces it?

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[bnoordhuis]

At a guess, it sounds like the lib file is just glue code for the dll. In that case you're SOL.

[drFabio]

This whole time I was assuming this was node-gyp default behaviour.
Everything makes sense now. Thanks a ton!

On Aug 3, 2016 5:53 PM, "Ben Noordhuis" [email protected] wrote:

At a guess, it sounds like the lib file is just glue code for the dll. In
that case you're SOL.

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[Shivani26Singh]

How to add dependence of shared_library in binding.gyp?
I have .node file of my C++ project and I want to refer this .node file in its Unit test project.
But I am unable to link .node/ .dll file in binding.gyp file of my Unit Test project.
If I build my C++ project with static library, I am able to execute my unit tests sucessfully.

[bumi001]

Instead of
"libraries": ["-lmylib", "-L/home/admin/MyLib/Library/binaries/linux/Release"]
you could say
"libraries": ["-lmylib", "-L' assuming your libmylib.so file is in the same directory as binding.gyp.

[ghost]

For making the path relative, just use module_root_dir, which is a variable exposed by node-gyp.

"libraries": ["<(module_root_dir)/......"]

---

-Wl,-rpath,... did not work for me, causing symbol lookup errors.

[nehasharan]

What is wrong in below code? It is throwing linking error.
'targets': [
{
'target_name': 'abc',
'type': 'shared_library',
'conditions': [],
'dependencies': [],
'libraries':[
'mylib.a'
],
'mac_framework_dirs' : [
],
'all_dependent_settings': {},
},

[phishoes]

Just specify the path the to the static .a file in the "libraries" section:

  "libraries": [ "/usr/local/lib/mylib.a" ]

Does this make it so in node you can call the function from mylib.a? If so, what would that formatting look like?