[issue35537] use os.posix_spawn in subprocess
STINNER Victor
report at bugs.python.org
Tue Jan 15 05:04:06 EST 2019
STINNER Victor <vstinner at redhat.com> added the comment:
If someone wants to implement a runtime check for musl, here is an heuristic based on ldd output and libc filenames:
https://github.com/lovell/detect-libc/blob/master/lib/detect-libc.js
var GLIBC = 'glibc';
var MUSL = 'musl';
// Try ldd
var ldd = spawnSync('ldd', ['--version'], spawnOptions);
if (ldd.status === 0 && ldd.stdout.indexOf(MUSL) !== -1) {
family = MUSL;
version = versionFromMuslLdd(ldd.stdout);
method = 'ldd';
} else if (ldd.status === 1 && ldd.stderr.indexOf(MUSL) !== -1) {
family = MUSL;
version = versionFromMuslLdd(ldd.stderr);
method = 'ldd';
} else {
// Try filesystem (family only)
var lib = safeReaddirSync('/lib');
if (lib.some(contains('-linux-gnu'))) {
family = GLIBC;
method = 'filesystem';
} else if (lib.some(contains('libc.musl-'))) {
family = MUSL;
method = 'filesystem';
} else if (lib.some(contains('ld-musl-'))) {
family = MUSL;
method = 'filesystem';
} else {
var usrSbin = safeReaddirSync('/usr/sbin');
if (usrSbin.some(contains('glibc'))) {
family = GLIBC;
method = 'filesystem';
}
}
}
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<https://bugs.python.org/issue35537>
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