How to cross-compile libc variants like musl?

<p>Most Linux binaries implicitly link to GNU libc, however recent Linux flavors like Alpine actually include musl, rather than libc.</p> <p>What&#39;s the best way to setup a Go project to build one binary for GNU libc, and another binary for musl libc, so that no matter which Linux flavor the user has, the corresponding binary can be easily published online?</p> <p>Go&#39;s toolchain includes out-of-the-box support for a wide variety of systems, however there does not appear to be much support for musl yet. This leads me to believe that a separate build bot is necessary (compiling for GNU libc on a GNU/Linux build host, compiling for musl libc on an Alpine build host). But I would prefer to build these two variant binaries from the very same developer machine if possible.</p> <p>What do you think?</p> <hr/>**评论：**<br/><br/>4ad: <pre><p>In most cases you can avoid linking with libc on Linux if you don&#39;t need cgo.</p> <p>You can also statically link with musl, but note that musl lacks features that people might want to use non-pure Go in the first place. For example, musl does&#39;t support arbitrary name resolvers, e.g. no LDAP support; it only supports DNS, just like the pure Go net package.</p> <p>On the other hand musl does support os/user.</p></pre>pierrrre: <pre><p>build your binary from the docker image golang:1.8.1-alpine</p></pre>