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Fix: Add -Wa,--noexecstack to cc_builder for assembly files (resolves #939) #940

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Nov 10, 2025
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Fix: Add -Wa,--noexecstack to cc_builder for assembly files (resolves #939) #940

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8 changes: 8 additions & 0 deletions aws-lc-sys/builder/cc_builder.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -354,6 +354,14 @@ impl CcBuilder {
if !cflags.is_empty() {
set_env_for_target("CFLAGS", cflags);
}

// Add --noexecstack flag for assembly files to prevent executable stacks
// This matches the behavior of AWS-LC's CMake build which uses -Wa,--noexecstack
// See: https://github.com/aws/aws-lc/blob/main/crypto/CMakeLists.txt#L77
if target_os() == "linux" || target_os().ends_with("bsd") {
cc_build.asm_flag("-Wa,--noexecstack");
}

cc_build
}

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