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libunwind: Pass -fPIC -funwind-tables via module options instead of CFLAGS.

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Alex Rønne Petersen 2024-11-05 15:26:05 +01:00
parent eb14fd8806
commit 5685a10ded
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1 changed files with 4 additions and 8 deletions
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12
src/libunwind.zig
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@ -46,6 +46,7 @@ pub fn buildStaticLib(comp: *Compilation, prog_node: std.Progress.Node) BuildErr
);
return error.SubCompilationFailed;
};
const target = comp.root_mod.resolved_target.result;
const root_mod = Module.create(arena, .{
.global_cache_directory = comp.global_cache_directory,
.paths = .{
@ -63,8 +64,9 @@ pub fn buildStaticLib(comp: *Compilation, prog_node: std.Progress.Node) BuildErr
.valgrind = false,
.sanitize_c = false,
.sanitize_thread = false,
.unwind_tables = false,
.pic = comp.root_mod.pic,
// necessary so that libunwind can unwind through its own stack frames
.unwind_tables = true,
.pic = if (target_util.supports_fpic(target)) true else null,
.optimize_mode = comp.compilerRtOptMode(),
},
.global = config,
@ -83,7 +85,6 @@ pub fn buildStaticLib(comp: *Compilation, prog_node: std.Progress.Node) BuildErr
const root_name = "unwind";
const link_mode = .static;
const target = comp.root_mod.resolved_target.result;
const basename = try std.zig.binNameAlloc(arena, .{
.root_name = root_name,
.target = target,
@ -114,16 +115,11 @@ pub fn buildStaticLib(comp: *Compilation, prog_node: std.Progress.Node) BuildErr
try cflags.append("-fno-exceptions");
try cflags.append("-I");
try cflags.append(try comp.zig_lib_directory.join(arena, &[_][]const u8{ "libunwind", "include" }));
if (target_util.supports_fpic(target)) {
try cflags.append("-fPIC");
}
try cflags.append("-D_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS");
try cflags.append("-Wa,--noexecstack");
try cflags.append("-fvisibility=hidden");
try cflags.append("-fvisibility-inlines-hidden");
try cflags.append("-fvisibility-global-new-delete=force-hidden");
// necessary so that libunwind can unwind through its own stack frames
try cflags.append("-funwind-tables");
// This is intentionally always defined because the macro definition means, should it only
// build for the target specified by compiler defines. Since we pass -target the compiler