| author |  Andrew Kelley <andrew@ziglang.org> 2021-05-12 22:25:20-07:00 |
| committer | Andrew Kelley <andrew@ziglang.org> 2021-05-12 22:25:20-07:00 |
| log | a7aa3ca66c271bc6f2905e4c3f0dd78763584d5b |
| tree | 24e232f653f0e57b9c5d988cd3e10ccf842add65 |
| parent | 344dc0cc0ffcd32ffb07c43ca7123b8564f2a506 |
stage2: build and provide libunwind when compiling for native libc
5ac91794cce8bd53916a378815be01e4365d53d9 made Zig link against the
system libc when targeting the native C ABI. However this made it stop
putting libunwind.a on the linker line when it needed to sometimes,
causing undefined symbols when linking against C++ code.2 files changed, 3 insertions(+), 1 deletions(-)
src
src/Compilation.zig-1
| ... | ... | @@ -3278,7 +3278,6 @@ fn wantBuildLibUnwindFromSource(comp: *Compilation) bool { |
| 3278 | 3278 | .Exe => true, |
| 3279 | 3279 | }; |
| 3280 | 3280 | return comp.bin_file.options.link_libc and is_exe_or_dyn_lib and |
| 3281 | comp.bin_file.options.libc_installation == null and | |
| 3282 | 3281 | comp.bin_file.options.object_format != .c and |
| 3283 | 3282 | target_util.libcNeedsLibUnwind(comp.getTarget()); |
| 3284 | 3283 | } |
src/link/Elf.zig+3
| ... | ... | @@ -1648,6 +1648,9 @@ fn linkWithLLD(self: *Elf, comp: *Compilation) !void { |
| 1648 | 1648 | // libc dep |
| 1649 | 1649 | if (self.base.options.link_libc) { |
| 1650 | 1650 | if (self.base.options.libc_installation != null) { |
| 1651 | if (target_util.libcNeedsLibUnwind(target)) { | |
| 1652 | try argv.append(comp.libunwind_static_lib.?.full_object_path); | |
| 1653 | } | |
| 1651 | 1654 | const needs_grouping = self.base.options.link_mode == .Static; |
| 1652 | 1655 | if (needs_grouping) try argv.append("--start-group"); |
| 1653 | 1656 | // This matches the order of glibc.libs |