Commit cefcf39faaa892784ed59d0960858195b0a9d367 | zig

author	Andrew Kelley <andrew@ziglang.org> 2024-09-19 12:54:56-07:00
committer	Andrew Kelley <andrew@ziglang.org> 2024-09-19 18:20:22-07:00
log	cefcf39faaa892784ed59d0960858195b0a9d367
tree	2e089ed7f6cf6eccbee28ebb5a6262b44ec6d77a
parent	38af1b7ed1cd6d4a71bd2f22e09b90cf186571d5

compiler_rt: strong linkage when compiling to .c

This works around a problem that started happening with LLD around
version 18.1.8:

```
lld-link: error: duplicate symbol: .weak.__nexf2.default
>>> defined at CMakeFiles/zig2.dir/compiler_rt.c.obj
>>> defined at compiler_rt.lib(compiler_rt.lib.obj)
```

1 files changed, 8 insertions(+), 2 deletions(-)

lib
- compiler_rt
  - common.zig

lib/compiler_rt/common.zig+8-2

...	...	@@ -1,8 +1,14 @@
1	1	const std = @import("std");
2	2	const builtin = @import("builtin");
3	3	const native_endian = builtin.cpu.arch.endian();
	4	const ofmt_c = builtin.object_format == .c;
4	5
5		pub const linkage: std.builtin.GlobalLinkage = if (builtin.is_test) .internal else .weak;
	6	pub const linkage: std.builtin.GlobalLinkage = if (builtin.is_test)
	7	.internal
	8	else if (ofmt_c)
	9	.strong
	10	else
	11	.weak;
6	12	/// Determines the symbol's visibility to other objects.
7	13	/// For WebAssembly this allows the symbol to be resolved to other modules, but will not
8	14	/// export it to the host runtime.
...	...	@@ -28,7 +34,7 @@ pub const want_float_exceptions = !builtin.cpu.arch.isWasm();
28	34
29	35	// Libcalls that involve u128 on Windows x86-64 are expected by LLVM to use the
30	36	// calling convention of @Vector(2, u64), rather than what's standard.
31		pub const want_windows_v2u64_abi = builtin.os.tag == .windows and builtin.cpu.arch == .x86_64 and @import("builtin").object_format != .c;
	37	pub const want_windows_v2u64_abi = builtin.os.tag == .windows and builtin.cpu.arch == .x86_64 and !ofmt_c;
32	38
33	39	/// This governs whether to use these symbol names for f16/f32 conversions
34	40	/// rather than the standard names: