Support of Alpine Linux / Musl libc builds

[Flarna]

As far as I know node-pre-gyp uses os, bitness , node module version to select the pre-built binaries to download.

Isn't this an issue for Linux systems using Musl libc? As far as I know they are not 100% ABI compatible therefore it may happen that non working binaries are downloaded.

Or is it currently needed to compile from source for Musl libc always?

[reconbot]

We don't currently have flags for things like c library or arm version or
os variant.

On Mon, Nov 7, 2016, 8:50 AM Flarna notifications@github.com wrote:

As far as I know node-pre-gyp uses os, bitness , node module version to
select the pre-built binaries to download.

Isn't this an issue for Linux systems using Musl libc? As far as I know
they are not 100% ABI compatible therefore it may happen that non working
binaries are downloaded.

Or is it currently needed to compile from source for Musl libc always?

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[springmeyer]

@Flarna correct. Alternative C or C++ libraries are not supported by default. However, If you want to produce binaries for them you can. You would use the --toolset argument (https://github.com/mapbox/node-pre-gyp/blob/105ecdcb82131594178d17575f60f48ec32c5ac6/CHANGELOG.md#060). What you would do is:

• Compile a given module on alpine linux and pass --toolset=musl where the musl could be any string you want.
• Publish the binary like node-pre-gyp package publish --toolset=musl
• Then you could install the binary like: npm install --toolset=musl

[Flarna]

Thanks a lot!

[coreprocess]

@Flarna node-pre-gyp just released a new version, which support the {libc} token in the path and package name variables. The token resolves to glibc or musl.

See:

• https://github.com/mapbox/node-pre-gyp/blob/master/CHANGELOG.md#0639
• https://github.com/mapbox/node-pre-gyp/blob/master/README.md#versioning
• Working example: https://github.com/core-process/snapsync/blob/master/node/package.json#L14-L15