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Build emutls.c on Android. #458

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Merged
merged 1 commit into from
Mar 30, 2022
Merged

Build emutls.c on Android. #458

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10 changes: 10 additions & 0 deletions build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -489,6 +489,16 @@ mod c {
sources.remove(&["__aeabi_cdcmp", "__aeabi_cfcmp"]);
}

// Android uses emulated TLS so we need a runtime support function.
if target_os == "android" {
sources.extend(&[("__emutls_get_address", "emutls.c")]);

// Work around a bug in the NDK headers (fixed in
// https://r.android.com/2038949 which will be released in a future
// NDK version) by providing a definition of LONG_BIT.
cfg.define("LONG_BIT", "(8 * sizeof(long))");
}

// When compiling the C code we require the user to tell us where the
// source code is, and this is largely done so when we're compiling as
// part of rust-lang/rust we can use the same llvm-project repository as
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