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zig cc: Add support for -exported_symbols_list (#30628)

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Resolves [unsupported linker arg: `-exported_symbols_list`](https://github.com/ziglang/zig/issues/24662)

This PR has been tested with https://github.com/anttiharju/compare-changes/pull/117 (via commits like https://github.com/anttiharju/nur-packages/commit/75b17b948e3046c198931fefce13661276789ff1) where the `zig cc` ([via this wrapper](https://github.com/anttiharju/compare-changes/blob/791129d4011f71b4b59110c79d07c73ed92c4308/.cargo/zcc/aarch64-apple-darwin.sh)) successfully builds a macOS binary (build would fail with zig 0.15.2):

Co-authored-by: Gunnar Wagenknecht <gunnar@wagenknecht.org>
Reviewed-on: https://codeberg.org/ziglang/zig/pulls/30628
Reviewed-by: Andrew Kelley <andrew@ziglang.org>
Co-authored-by: Antti Harju <anttiharju@noreply.codeberg.org>
Co-committed-by: Antti Harju <anttiharju@noreply.codeberg.org>
This commit is contained in:
Antti Harju
2026-01-14 19:16:05 +01:00
committed by Andrew Kelley
parent b99dc12ece
commit f695ca08e3
1 changed files with 11 additions and 0 deletions
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src/main.zig
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@@ -665,6 +665,7 @@ const usage_build_generic =
\\ -weak_framework [name] (Darwin) link against framework and mark it and all referenced symbols as weak
\\ -F[dir] (Darwin) add search path for frameworks
\\ --export=[value] (WebAssembly) Force a symbol to be exported
\\ --exported_symbols_list [file] (Darwin) Force symbols in the file to be exported
\\
\\Test Options:
\\ --test-filter [text] Skip tests that do not match any filter
@@ -2612,6 +2613,16 @@ fn buildOutputType(
};
} else if (mem.eql(u8, arg, "--export")) {
try linker_export_symbol_names.append(arena, linker_args_it.nextOrFatal());
} else if (mem.eql(u8, arg, "-exported_symbols_list")) {
const exported_symbols_list = linker_args_it.nextOrFatal();
const content = Io.Dir.cwd().readFileAlloc(io, exported_symbols_list, arena, .limited(10 * 1024 * 1024)) catch |err| {
fatal("unable to read exported symbols list '{s}': {s}", .{ exported_symbols_list, @errorName(err) });
};
var symbols_it = mem.splitScalar(u8, content, '\n');
while (symbols_it.next()) |line| {
if (line.len == 0) continue;
try linker_export_symbol_names.append(arena, line);
}
} else if (mem.eql(u8, arg, "--compress-debug-sections")) {
const arg1 = linker_args_it.nextOrFatal();
linker_compress_debug_sections = std.meta.stringToEnum(std.zig.CompressDebugSections, arg1) orelse {