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-rw-r--r--src/main.zig294
1 files changed, 92 insertions, 202 deletions
diff --git a/src/main.zig b/src/main.zig
index 1a445107ba..76c43476ee 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -478,6 +478,7 @@ const usage_build_generic =
\\ --sysroot [path] Set the system root directory (usually /)
\\ --version [ver] Dynamic library semver
\\ --entry [name] Set the entrypoint symbol name
+ \\ --force_undefined [name] Specify the symbol must be defined for the link to succeed
\\ -fsoname[=name] Override the default SONAME value
\\ -fno-soname Disable emitting a SONAME
\\ -fLLD Force using LLD as the linker
@@ -680,6 +681,28 @@ const Listen = union(enum) {
stdio,
};
+const ArgsIterator = struct {
+ resp_file: ?ArgIteratorResponseFile = null,
+ args: []const []const u8,
+ i: usize = 0,
+ fn next(it: *@This()) ?[]const u8 {
+ if (it.i >= it.args.len) {
+ if (it.resp_file) |*resp| return resp.next();
+ return null;
+ }
+ defer it.i += 1;
+ return it.args[it.i];
+ }
+ fn nextOrFatal(it: *@This()) []const u8 {
+ if (it.i >= it.args.len) {
+ if (it.resp_file) |*resp| if (resp.next()) |ret| return ret;
+ fatal("expected parameter after {s}", .{it.args[it.i - 1]});
+ }
+ defer it.i += 1;
+ return it.args[it.i];
+ }
+};
+
fn buildOutputType(
gpa: Allocator,
arena: Allocator,
@@ -784,6 +807,7 @@ fn buildOutputType(
var test_evented_io = false;
var test_no_exec = false;
var entry: ?[]const u8 = null;
+ var force_undefined_symbols: std.StringArrayHashMapUnmanaged(void) = .{};
var stack_size_override: ?u64 = null;
var image_base_override: ?u64 = null;
var use_llvm: ?bool = null;
@@ -917,28 +941,7 @@ fn buildOutputType(
soname = .yes_default_value;
- const Iterator = struct {
- resp_file: ?ArgIteratorResponseFile = null,
- args: []const []const u8,
- i: usize = 0,
- fn next(it: *@This()) ?[]const u8 {
- if (it.i >= it.args.len) {
- if (it.resp_file) |*resp| return resp.next();
- return null;
- }
- defer it.i += 1;
- return it.args[it.i];
- }
- fn nextOrFatal(it: *@This()) []const u8 {
- if (it.i >= it.args.len) {
- if (it.resp_file) |*resp| if (resp.next()) |ret| return ret;
- fatal("expected parameter after {s}", .{it.args[it.i - 1]});
- }
- defer it.i += 1;
- return it.args[it.i];
- }
- };
- var args_iter = Iterator{
+ var args_iter = ArgsIterator{
.args = all_args[2..],
};
@@ -1029,6 +1032,8 @@ fn buildOutputType(
optimize_mode_string = args_iter.nextOrFatal();
} else if (mem.eql(u8, arg, "--entry")) {
entry = args_iter.nextOrFatal();
+ } else if (mem.eql(u8, arg, "--force_undefined")) {
+ try force_undefined_symbols.put(gpa, args_iter.nextOrFatal(), {});
} else if (mem.eql(u8, arg, "--stack")) {
const next_arg = args_iter.nextOrFatal();
stack_size_override = std.fmt.parseUnsigned(u64, next_arg, 0) catch |err| {
@@ -1816,6 +1821,9 @@ fn buildOutputType(
.entry => {
entry = it.only_arg;
},
+ .force_undefined_symbol => {
+ try force_undefined_symbols.put(gpa, it.only_arg, {});
+ },
.weak_library => try system_libs.put(it.only_arg, .{ .weak = true }),
.weak_framework => try frameworks.put(gpa, it.only_arg, .{ .weak = true }),
.headerpad_max_install_names => headerpad_max_install_names = true,
@@ -1843,17 +1851,14 @@ fn buildOutputType(
}
}
// Parse linker args.
- var i: usize = 0;
- while (i < linker_args.items.len) : (i += 1) {
- const arg = linker_args.items[i];
+ var linker_args_it = ArgsIterator{
+ .args = linker_args.items,
+ };
+ while (linker_args_it.next()) |arg| {
if (mem.eql(u8, arg, "-soname") or
mem.eql(u8, arg, "--soname"))
{
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- const name = linker_args.items[i];
+ const name = linker_args_it.nextOrFatal();
soname = .{ .yes = name };
// Use it as --name.
// Example: libsoundio.so.2
@@ -1881,64 +1886,37 @@ fn buildOutputType(
}
provided_name = name[prefix..end];
} else if (mem.eql(u8, arg, "-rpath")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- try rpath_list.append(linker_args.items[i]);
+ try rpath_list.append(linker_args_it.nextOrFatal());
} else if (mem.eql(u8, arg, "--subsystem")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- subsystem = try parseSubSystem(linker_args.items[i]);
+ subsystem = try parseSubSystem(linker_args_it.nextOrFatal());
} else if (mem.eql(u8, arg, "-I") or
mem.eql(u8, arg, "--dynamic-linker") or
mem.eql(u8, arg, "-dynamic-linker"))
{
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- target_dynamic_linker = linker_args.items[i];
+ target_dynamic_linker = linker_args_it.nextOrFatal();
} else if (mem.eql(u8, arg, "-E") or
mem.eql(u8, arg, "--export-dynamic") or
mem.eql(u8, arg, "-export-dynamic"))
{
rdynamic = true;
} else if (mem.eql(u8, arg, "--version-script")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- version_script = linker_args.items[i];
+ version_script = linker_args_it.nextOrFatal();
} else if (mem.eql(u8, arg, "-O")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- linker_optimization = std.fmt.parseUnsigned(u8, linker_args.items[i], 10) catch |err| {
- fatal("unable to parse optimization level '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ const opt = linker_args_it.nextOrFatal();
+ linker_optimization = std.fmt.parseUnsigned(u8, opt, 10) catch |err| {
+ fatal("unable to parse optimization level '{s}': {s}", .{ opt, @errorName(err) });
};
} else if (mem.startsWith(u8, arg, "-O")) {
linker_optimization = std.fmt.parseUnsigned(u8, arg["-O".len..], 10) catch |err| {
fatal("unable to parse optimization level '{s}': {s}", .{ arg, @errorName(err) });
};
} else if (mem.eql(u8, arg, "-pagezero_size")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- const next_arg = linker_args.items[i];
+ const next_arg = linker_args_it.nextOrFatal();
pagezero_size = std.fmt.parseUnsigned(u64, eatIntPrefix(next_arg, 16), 16) catch |err| {
fatal("unable to parse pagezero size '{s}': {s}", .{ next_arg, @errorName(err) });
};
} else if (mem.eql(u8, arg, "-headerpad")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- const next_arg = linker_args.items[i];
+ const next_arg = linker_args_it.nextOrFatal();
headerpad_size = std.fmt.parseUnsigned(u32, eatIntPrefix(next_arg, 16), 16) catch |err| {
fatal("unable to parse headerpad size '{s}': {s}", .{ next_arg, @errorName(err) });
};
@@ -1961,11 +1939,7 @@ fn buildOutputType(
} else if (mem.eql(u8, arg, "--print-map")) {
linker_print_map = true;
} else if (mem.eql(u8, arg, "--sort-section")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- const arg1 = linker_args.items[i];
+ const arg1 = linker_args_it.nextOrFatal();
linker_sort_section = std.meta.stringToEnum(link.SortSection, arg1) orelse {
fatal("expected [name|alignment] after --sort-section, found '{s}'", .{arg1});
};
@@ -1998,28 +1972,16 @@ fn buildOutputType(
} else if (mem.startsWith(u8, arg, "--export=")) {
try linker_export_symbol_names.append(arg["--export=".len..]);
} else if (mem.eql(u8, arg, "--export")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- try linker_export_symbol_names.append(linker_args.items[i]);
+ try linker_export_symbol_names.append(linker_args_it.nextOrFatal());
} else if (mem.eql(u8, arg, "--compress-debug-sections")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- const arg1 = linker_args.items[i];
+ const arg1 = linker_args_it.nextOrFatal();
linker_compress_debug_sections = std.meta.stringToEnum(link.CompressDebugSections, arg1) orelse {
fatal("expected [none|zlib] after --compress-debug-sections, found '{s}'", .{arg1});
};
} else if (mem.startsWith(u8, arg, "-z")) {
var z_arg = arg[2..];
if (z_arg.len == 0) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker extension flag after '{s}'", .{arg});
- }
- z_arg = linker_args.items[i];
+ z_arg = linker_args_it.nextOrFatal();
}
if (mem.eql(u8, z_arg, "nodelete")) {
linker_z_nodelete = true;
@@ -2056,51 +2018,33 @@ fn buildOutputType(
fatal("unsupported linker extension flag: -z {s}", .{z_arg});
}
} else if (mem.eql(u8, arg, "--major-image-version")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- version.major = std.fmt.parseUnsigned(u32, linker_args.items[i], 10) catch |err| {
- fatal("unable to parse major image version '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ const major = linker_args_it.nextOrFatal();
+ version.major = std.fmt.parseUnsigned(u32, major, 10) catch |err| {
+ fatal("unable to parse major image version '{s}': {s}", .{ major, @errorName(err) });
};
have_version = true;
} else if (mem.eql(u8, arg, "--minor-image-version")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- version.minor = std.fmt.parseUnsigned(u32, linker_args.items[i], 10) catch |err| {
- fatal("unable to parse minor image version '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ const minor = linker_args_it.nextOrFatal();
+ version.minor = std.fmt.parseUnsigned(u32, minor, 10) catch |err| {
+ fatal("unable to parse minor image version '{s}': {s}", .{ minor, @errorName(err) });
};
have_version = true;
} else if (mem.eql(u8, arg, "-e") or mem.eql(u8, arg, "--entry")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- entry = linker_args.items[i];
+ entry = linker_args_it.nextOrFatal();
+ } else if (mem.eql(u8, arg, "-u")) {
+ try force_undefined_symbols.put(gpa, linker_args_it.nextOrFatal(), {});
} else if (mem.eql(u8, arg, "--stack") or mem.eql(u8, arg, "-stack_size")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- stack_size_override = std.fmt.parseUnsigned(u64, linker_args.items[i], 0) catch |err| {
- fatal("unable to parse stack size override '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ const stack_size = linker_args_it.nextOrFatal();
+ stack_size_override = std.fmt.parseUnsigned(u64, stack_size, 0) catch |err| {
+ fatal("unable to parse stack size override '{s}': {s}", .{ stack_size, @errorName(err) });
};
} else if (mem.eql(u8, arg, "--image-base")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- image_base_override = std.fmt.parseUnsigned(u64, linker_args.items[i], 0) catch |err| {
- fatal("unable to parse image base override '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ const image_base = linker_args_it.nextOrFatal();
+ image_base_override = std.fmt.parseUnsigned(u64, image_base, 0) catch |err| {
+ fatal("unable to parse image base override '{s}': {s}", .{ image_base, @errorName(err) });
};
} else if (mem.eql(u8, arg, "-T") or mem.eql(u8, arg, "--script")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- linker_script = linker_args.items[i];
+ linker_script = linker_args_it.nextOrFatal();
} else if (mem.eql(u8, arg, "--eh-frame-hdr")) {
link_eh_frame_hdr = true;
} else if (mem.eql(u8, arg, "--no-eh-frame-hdr")) {
@@ -2138,130 +2082,74 @@ fn buildOutputType(
} else if (mem.eql(u8, arg, "--major-os-version") or
mem.eql(u8, arg, "--minor-os-version"))
{
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
// This option does not do anything.
+ _ = linker_args_it.nextOrFatal();
} else if (mem.eql(u8, arg, "--major-subsystem-version")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
-
+ const major = linker_args_it.nextOrFatal();
major_subsystem_version = std.fmt.parseUnsigned(
u32,
- linker_args.items[i],
+ major,
10,
) catch |err| {
- fatal("unable to parse major subsystem version '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ fatal("unable to parse major subsystem version '{s}': {s}", .{ major, @errorName(err) });
};
} else if (mem.eql(u8, arg, "--minor-subsystem-version")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
-
+ const minor = linker_args_it.nextOrFatal();
minor_subsystem_version = std.fmt.parseUnsigned(
u32,
- linker_args.items[i],
+ minor,
10,
) catch |err| {
- fatal("unable to parse minor subsystem version '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ fatal("unable to parse minor subsystem version '{s}': {s}", .{ minor, @errorName(err) });
};
} else if (mem.eql(u8, arg, "-framework")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- try frameworks.put(gpa, linker_args.items[i], .{});
+ try frameworks.put(gpa, linker_args_it.nextOrFatal(), .{});
} else if (mem.eql(u8, arg, "-weak_framework")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- try frameworks.put(gpa, linker_args.items[i], .{ .weak = true });
+ try frameworks.put(gpa, linker_args_it.nextOrFatal(), .{ .weak = true });
} else if (mem.eql(u8, arg, "-needed_framework")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- try frameworks.put(gpa, linker_args.items[i], .{ .needed = true });
+ try frameworks.put(gpa, linker_args_it.nextOrFatal(), .{ .needed = true });
} else if (mem.eql(u8, arg, "-needed_library")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- try system_libs.put(linker_args.items[i], .{ .needed = true });
+ try system_libs.put(linker_args_it.nextOrFatal(), .{ .needed = true });
} else if (mem.startsWith(u8, arg, "-weak-l")) {
try system_libs.put(arg["-weak-l".len..], .{ .weak = true });
} else if (mem.eql(u8, arg, "-weak_library")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- try system_libs.put(linker_args.items[i], .{ .weak = true });
+ try system_libs.put(linker_args_it.nextOrFatal(), .{ .weak = true });
} else if (mem.eql(u8, arg, "-compatibility_version")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- compatibility_version = std.builtin.Version.parse(linker_args.items[i]) catch |err| {
- fatal("unable to parse -compatibility_version '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ const compat_version = linker_args_it.nextOrFatal();
+ compatibility_version = std.builtin.Version.parse(compat_version) catch |err| {
+ fatal("unable to parse -compatibility_version '{s}': {s}", .{ compat_version, @errorName(err) });
};
} else if (mem.eql(u8, arg, "-current_version")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- version = std.builtin.Version.parse(linker_args.items[i]) catch |err| {
- fatal("unable to parse -current_version '{s}': {s}", .{ linker_args.items[i], @errorName(err) });
+ const curr_version = linker_args_it.nextOrFatal();
+ version = std.builtin.Version.parse(curr_version) catch |err| {
+ fatal("unable to parse -current_version '{s}': {s}", .{ curr_version, @errorName(err) });
};
have_version = true;
} else if (mem.eql(u8, arg, "--out-implib") or
mem.eql(u8, arg, "-implib"))
{
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- emit_implib = .{ .yes = linker_args.items[i] };
+ emit_implib = .{ .yes = linker_args_it.nextOrFatal() };
emit_implib_arg_provided = true;
} else if (mem.eql(u8, arg, "-undefined")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- if (mem.eql(u8, "dynamic_lookup", linker_args.items[i])) {
+ const lookup_type = linker_args_it.nextOrFatal();
+ if (mem.eql(u8, "dynamic_lookup", lookup_type)) {
linker_allow_shlib_undefined = true;
- } else if (mem.eql(u8, "error", linker_args.items[i])) {
+ } else if (mem.eql(u8, "error", lookup_type)) {
linker_allow_shlib_undefined = false;
} else {
- fatal("unsupported -undefined option '{s}'", .{linker_args.items[i]});
+ fatal("unsupported -undefined option '{s}'", .{lookup_type});
}
} else if (mem.eql(u8, arg, "-install_name")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- install_name = linker_args.items[i];
+ install_name = linker_args_it.nextOrFatal();
} else if (mem.eql(u8, arg, "-force_load")) {
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
try link_objects.append(.{
- .path = linker_args.items[i],
+ .path = linker_args_it.nextOrFatal(),
.must_link = true,
});
} else if (mem.eql(u8, arg, "-hash-style") or
mem.eql(u8, arg, "--hash-style"))
{
- i += 1;
- if (i >= linker_args.items.len) {
- fatal("expected linker arg after '{s}'", .{arg});
- }
- const next_arg = linker_args.items[i];
+ const next_arg = linker_args_it.nextOrFatal();
hash_style = std.meta.stringToEnum(link.HashStyle, next_arg) orelse {
fatal("expected [sysv|gnu|both] after --hash-style, found '{s}'", .{
next_arg,
@@ -3219,6 +3107,7 @@ fn buildOutputType(
.link_eh_frame_hdr = link_eh_frame_hdr,
.link_emit_relocs = link_emit_relocs,
.entry = entry,
+ .force_undefined_symbols = force_undefined_symbols,
.stack_size_override = stack_size_override,
.image_base_override = image_base_override,
.strip = strip,
@@ -5295,6 +5184,7 @@ pub const ClangArgIterator = struct {
emit_llvm,
sysroot,
entry,
+ force_undefined_symbol,
weak_library,
weak_framework,
headerpad_max_install_names,
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-28 04:22:10 +0000