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[Support] Fix build under Emscripten 

Summary:
Emscripten's libc doesn't define MNT_LOCAL, thus causing a build
failure in the fallback path. However, to the best of my knowledge,
it also doesn't support remote file system mounts, so we may simply
return `true` here (as we do for e.g. Fuchsia). With this fix, the
core LLVM libraries build correctly under emscripten (though some
of the tools and utils do not).

Reviewers: kripken
Differential Revision: https://reviews.llvm.org/D63688

llvm-svn: 364143
This commit is contained in:
Keno Fischer 2019-06-23 00:29:59 +00:00
parent bc85dbe2ba
commit 5f4ae7c457
1 changed files with 3 additions and 0 deletions
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3
llvm/lib/Support/Unix/Path.inc
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@ -424,6 +424,9 @@ static bool is_local_impl(struct STATVFS &Vfs) {
#elif defined(__Fuchsia__) #elif defined(__Fuchsia__)
// Fuchsia doesn't yet support remote filesystem mounts. // Fuchsia doesn't yet support remote filesystem mounts.
return true; return true;
#elif defined(__EMSCRIPTEN__)
// Emscripten doesn't currently support remote filesystem mounts.
return true;
#elif defined(__HAIKU__) #elif defined(__HAIKU__)
// Haiku doesn't expose this information. // Haiku doesn't expose this information.
return false; return false;