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Match the C binding's target arch detection with the root crate's

This commit is contained in:
rsdy 2021-10-09 19:46:07 +01:00
parent c5941a2731
commit 6b9cbe5e23
1 changed files with 12 additions and 4 deletions
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16
c/blake3_c_rust_bindings/build.rs
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@ -22,6 +22,10 @@ fn is_armv7() -> bool {
target_components()[0] == "armv7"
}
fn is_aarch64() -> bool {
target_components()[0] == "aarch64"
}
// Windows targets may be using the MSVC toolchain or the GNU toolchain. The
// right compiler flags to use depend on the toolchain. (And we don't want to
// use flag_if_supported, because we don't want features to be silently
@ -148,10 +152,14 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
avx512_build.compile("blake3_avx512");
}
// We only build NEON code here if 1) it's requested and 2) the root crate
// is not already building it. The only time this will really happen is if
// you build this crate by hand with the "neon" feature for some reason.
if defined("CARGO_FEATURE_NEON") {
// We only build NEON code here if
// 1) it's requested
// and 2) the root crate is not already building it.
// The only time this will really happen is if you build this
// crate by hand with the "neon" feature for some reason.
//
// In addition, 3) if the target is aarch64, NEON is on by default.
if defined("CARGO_FEATURE_NEON") || is_aarch64() {
let mut neon_build = new_build();
neon_build.file(c_dir_path("blake3_neon.c"));
// ARMv7 platforms that support NEON generally need the following