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compiler: Set libc++ ABI version to 2 for Emscripten.

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It remains 1 everywhere else.

Also remove some code that allowed setting the libc++ ABI version on the
Compilation since there are no current plans to actually expose this in the CLI.
This commit is contained in:
Alex Rønne Petersen 2025-05-04 12:25:05 +02:00
parent 7b45bd3c09
commit 566e4ab6b1
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2 changed files with 3 additions and 13 deletions
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4
src/Compilation.zig
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@ -259,8 +259,6 @@ crt_files: std.StringHashMapUnmanaged(CrtFile) = .empty,
/// Null means only show snippet on first error.
reference_trace: ?u32 = null,
libcxx_abi_version: libcxx.AbiVersion = libcxx.AbiVersion.default,
/// This mutex guards all `Compilation` mutable state.
/// Disabled in single-threaded mode because the thread pool spawns in the same thread.
mutex: if (builtin.single_threaded) struct {
@ -1172,7 +1170,6 @@ pub const CreateOptions = struct {
force_load_objc: bool = false,
/// Whether local symbols should be discarded from the symbol table.
discard_local_symbols: bool = false,
libcxx_abi_version: libcxx.AbiVersion = libcxx.AbiVersion.default,
/// (Windows) PDB source path prefix to instruct the linker how to resolve relative
/// paths when consolidating CodeView streams into a single PDB file.
pdb_source_path: ?[]const u8 = null,
@ -1545,7 +1542,6 @@ pub fn create(gpa: Allocator, arena: Allocator, options: CreateOptions) !*Compil
.debug_compiler_runtime_libs = options.debug_compiler_runtime_libs,
.debug_compile_errors = options.debug_compile_errors,
.incremental = options.incremental,
.libcxx_abi_version = options.libcxx_abi_version,
.root_name = root_name,
.sysroot = sysroot,
.windows_libs = windows_libs,

12
src/libcxx.zig
View file

@ -8,13 +8,6 @@ const build_options = @import("build_options");
const trace = @import("tracy.zig").trace;
const Module = @import("Package/Module.zig");
pub const AbiVersion = enum(u2) {
@"1" = 1,
@"2" = 2,
pub const default: AbiVersion = .@"1";
};
const libcxxabi_files = [_][]const u8{
"src/abort_message.cpp",
"src/cxa_aux_runtime.cpp",
@ -145,11 +138,12 @@ pub fn buildLibCxx(comp: *Compilation, prog_node: std.Progress.Node) BuildError!
const cxxabi_include_path = try comp.zig_lib_directory.join(arena, &[_][]const u8{ "libcxxabi", "include" });
const cxx_include_path = try comp.zig_lib_directory.join(arena, &[_][]const u8{ "libcxx", "include" });
const cxx_src_include_path = try comp.zig_lib_directory.join(arena, &[_][]const u8{ "libcxx", "src" });
const abi_version: u2 = if (target.os.tag == .emscripten) 2 else 1;
const abi_version_arg = try std.fmt.allocPrint(arena, "-D_LIBCPP_ABI_VERSION={d}", .{
@intFromEnum(comp.libcxx_abi_version),
abi_version,
});
const abi_namespace_arg = try std.fmt.allocPrint(arena, "-D_LIBCPP_ABI_NAMESPACE=__{d}", .{
@intFromEnum(comp.libcxx_abi_version),
abi_version,
});
const optimize_mode = comp.compilerRtOptMode();