79 lines
2.4 KiB
Markdown
79 lines
2.4 KiB
Markdown
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# detect-libc
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Node.js module to detect the C standard library (libc) implementation
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family and version in use on a given Linux system.
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Provides a value suitable for use with the `LIBC` option of
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[prebuild](https://www.npmjs.com/package/prebuild),
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[prebuild-ci](https://www.npmjs.com/package/prebuild-ci) and
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[prebuild-install](https://www.npmjs.com/package/prebuild-install),
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therefore allowing build and provision of pre-compiled binaries
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for musl-based Linux e.g. Alpine as well as glibc-based.
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Currently supports libc detection of `glibc` and `musl`.
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## Install
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```sh
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npm install detect-libc
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```
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## Usage
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### API
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```js
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const { GLIBC, MUSL, family, version, isNonGlibcLinux } = require('detect-libc');
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```
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* `GLIBC` is a String containing the value "glibc" for comparison with `family`.
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* `MUSL` is a String containing the value "musl" for comparison with `family`.
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* `family` is a String representing the system libc family.
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* `version` is a String representing the system libc version number.
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* `isNonGlibcLinux` is a Boolean representing whether the system is a non-glibc Linux, e.g. Alpine.
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### detect-libc command line tool
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When run on a Linux system with a non-glibc libc,
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the child command will be run with the `LIBC` environment variable
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set to the relevant value.
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On all other platforms will run the child command as-is.
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The command line feature requires `spawnSync` provided by Node v0.12+.
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```sh
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detect-libc child-command
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```
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## Integrating with prebuild
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```json
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"scripts": {
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"install": "detect-libc prebuild-install || node-gyp rebuild",
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"test": "mocha && detect-libc prebuild-ci"
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},
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"dependencies": {
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"detect-libc": "^1.0.2",
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"prebuild-install": "^2.2.0"
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},
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"devDependencies": {
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"prebuild": "^6.2.1",
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"prebuild-ci": "^2.2.3"
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}
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```
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## Licence
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Copyright 2017 Lovell Fuller
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0.html)
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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