Commit 47d2e5de90faec1221f61255c36e2be81c9e3db3 | zig

author	Antonin Décimo <antonin.decimo@gmail.com> 2026-03-17 09:24:30+01:00
committer	Andrew Kelley <andrew@ziglang.org> 2026-03-17 09:24:30+01:00
log	47d2e5de90faec1221f61255c36e2be81c9e3db3
tree	0cf931347841419905197a167080ffa24e4e503e
parent	bd89b61a2117d4ec0b0edb8a2b0b0aacb7388a3b

CLI: parse ld64 `-w` "suppress all warnings" option (#31545)

Apple's ld64 and LLVM's ld.ld64 both support a `-w` option to suppress all linker warnings. This option is used in OCaml's build system, parse it so that Zig may be used as a compiler to build an OCaml cross-compiler targeting aarch64-macos.

See also https://codeberg.org/ziglang/zig/issues/31210.

Reviewed-on: https://codeberg.org/ziglang/zig/pulls/31545
Reviewed-by: Andrew Kelley <andrew@ziglang.org>
Co-authored-by: Antonin Décimo <antonin.decimo@gmail.com>
Co-committed-by: Antonin Décimo <antonin.decimo@gmail.com>

1 files changed, 3 insertions(+), 0 deletions(-)

src
- main.zig

src/main.zig+3

 @@ -2718,6 +2718,9 @@ fn buildOutputType(
                     entry = .{ .named = linker_args_it.nextOrFatal() };
                 } else if (mem.eql(u8, arg, "-u")) {
                     try force_undefined_symbols.put(arena, linker_args_it.nextOrFatal(), {});
+                } else if (mem.eql(u8, arg, "-w")) {
+                    // This ignores the -w flag of ld64 and ld64.lld to suppress all linker warnings
+                    // since Zig doesn't emit linker warnings.
                 } else if (mem.eql(u8, arg, "-x") or mem.eql(u8, arg, "--discard-all")) {
                     discard_local_symbols = true;
                 } else if (mem.eql(u8, arg, "--stack") or mem.eql(u8, arg, "-stack_size")) {