Commit a4eaeee720
Changed files (11)
src/codegen.cpp
@@ -9778,7 +9778,7 @@ static void gen_c_object(CodeGen *g, Buf *self_exe_path, CFile *c_file) {
Termination term;
ZigList<const char *> args = {};
args.append(buf_ptr(self_exe_path));
- args.append("cc");
+ args.append("clang");
Buf *out_dep_path = buf_sprintf("%s.d", buf_ptr(out_obj_path));
add_cc_args(g, args, buf_ptr(out_dep_path), false);
src/error.cpp
@@ -83,6 +83,7 @@ const char *err_str(Error err) {
case ErrorTargetHasNoDynamicLinker: return "target has no dynamic linker";
case ErrorInvalidAbiVersion: return "invalid C ABI version";
case ErrorInvalidOperatingSystemVersion: return "invalid operating system version";
+ case ErrorUnknownClangOption: return "unknown Clang option";
}
return "(invalid error)";
}
src/link.cpp
@@ -2008,7 +2008,7 @@ static const char *get_def_lib(CodeGen *parent, const char *name, Buf *def_in_fi
ZigList<const char *> args = {};
args.append(buf_ptr(self_exe_path));
- args.append("cc");
+ args.append("clang");
args.append("-x");
args.append("c");
args.append(buf_ptr(def_in_file));
src/main.cpp
@@ -36,7 +36,7 @@ static int print_full_usage(const char *arg0, FILE *file, int return_code) {
" build-lib [source] create library from source or object files\n"
" build-obj [source] create object from source or assembly\n"
" builtin show the source code of @import(\"builtin\")\n"
- " cc C compiler\n"
+ " cc use Zig as a drop-in C compiler\n"
" fmt parse files and render in canonical zig format\n"
" id print the base64-encoded compiler id\n"
" init-exe initialize a `zig build` application in the cwd\n"
@@ -271,7 +271,7 @@ static int main0(int argc, char **argv) {
return 0;
}
- if (argc >= 2 && (strcmp(argv[1], "cc") == 0 ||
+ if (argc >= 2 && (strcmp(argv[1], "clang") == 0 ||
strcmp(argv[1], "-cc1") == 0 || strcmp(argv[1], "-cc1as") == 0))
{
return ZigClang_main(argc, argv);
@@ -575,9 +575,55 @@ static int main0(int argc, char **argv) {
return (term.how == TerminationIdClean) ? term.code : -1;
} else if (argc >= 2 && strcmp(argv[1], "fmt") == 0) {
return stage2_fmt(argc, argv);
- }
-
- for (int i = 1; i < argc; i += 1) {
+ } else if (argc >= 2 && strcmp(argv[1], "cc") == 0) {
+ const char *o_arg = nullptr;
+ bool c_arg = false;
+ Stage2ClangArgIterator it;
+ stage2_clang_arg_iterator(&it, argc, argv);
+ while (it.has_next) {
+ if ((err = stage2_clang_arg_next(&it))) {
+ fprintf(stderr, "unable to parse command line parameters: %s\n", err_str(err));
+ return EXIT_FAILURE;
+ }
+ switch (it.kind) {
+ case Stage2ClangArgTarget: // example: -target riscv64-linux-unknown
+ target_string = it.only_arg;
+ break;
+ case Stage2ClangArgO: // -o
+ o_arg = it.only_arg;
+ break;
+ case Stage2ClangArgC: // -c
+ c_arg = true;
+ break;
+ case Stage2ClangArgOther:
+ for (size_t i = 0; i < it.other_args_len; i += 1) {
+ clang_argv.append(it.other_args_ptr[i]);
+ }
+ break;
+ case Stage2ClangArgPositional: {
+ CFile *c_file = heap::c_allocator.create<CFile>();
+ c_file->source_path = it.only_arg;
+ c_source_files.append(c_file);
+ break;
+ }
+ case Stage2ClangArgL: // -l
+ if (strcmp(it.only_arg, "c") == 0)
+ have_libc = true;
+ link_libs.append(it.only_arg);
+ break;
+ }
+ }
+ if (!c_arg) {
+ cmd = CmdBuild;
+ out_type = OutTypeExe;
+ if (o_arg == nullptr) {
+ zig_panic("TODO set out name to a.out");
+ }
+ } else {
+ cmd = CmdBuild;
+ out_type = OutTypeObj;
+ }
+ } else for (int i = 1; i < argc; i += 1) {
char *arg = argv[i];
if (arg[0] == '-') {
src/stage2.cpp
@@ -304,3 +304,15 @@ enum Error stage2_detect_native_paths(struct Stage2NativePaths *native_paths) {
return ErrorNone;
}
+
+void stage2_clang_arg_iterator(struct Stage2ClangArgIterator *it,
+ size_t argc, char **argv)
+{
+ const char *msg = "stage0 called stage2_clang_arg_iterator";
+ stage2_panic(msg, strlen(msg));
+}
+
+enum Error stage2_clang_arg_next(struct Stage2ClangArgIterator *it) {
+ const char *msg = "stage0 called stage2_clang_arg_next";
+ stage2_panic(msg, strlen(msg));
+}
src/stage2.h
@@ -105,6 +105,7 @@ enum Error {
ErrorTargetHasNoDynamicLinker,
ErrorInvalidAbiVersion,
ErrorInvalidOperatingSystemVersion,
+ ErrorUnknownClangOption,
};
// ABI warning
@@ -316,4 +317,34 @@ struct Stage2NativePaths {
// ABI warning
ZIG_EXTERN_C enum Error stage2_detect_native_paths(struct Stage2NativePaths *native_paths);
+// ABI warning
+enum Stage2ClangArg {
+ Stage2ClangArgTarget,
+ Stage2ClangArgO,
+ Stage2ClangArgC,
+ Stage2ClangArgOther,
+ Stage2ClangArgPositional,
+ Stage2ClangArgL,
+};
+
+// ABI warning
+struct Stage2ClangArgIterator {
+ bool has_next;
+ enum Stage2ClangArg kind;
+ const char *only_arg;
+ const char *second_arg;
+ const char **other_args_ptr;
+ size_t other_args_len;
+ const char **argv_ptr;
+ size_t argv_len;
+ size_t next_index;
+};
+
+// ABI warning
+ZIG_EXTERN_C void stage2_clang_arg_iterator(struct Stage2ClangArgIterator *it,
+ size_t argc, char **argv);
+
+// ABI warning
+ZIG_EXTERN_C enum Error stage2_clang_arg_next(struct Stage2ClangArgIterator *it);
+
#endif
src-self-hosted/clang_options.zig
@@ -0,0 +1,126 @@
+const std = @import("std");
+const mem = std.mem;
+
+pub const list = @import("clang_options_data.zig").data;
+
+pub const CliArg = struct {
+ name: []const u8,
+ syntax: Syntax,
+
+ /// TODO we're going to want to change this when we start shipping self-hosted because this causes
+ /// all the functions in stage2.zig to get exported.
+ zig_equivalent: @import("stage2.zig").ClangArgIterator.ZigEquivalent,
+
+ /// Prefixed by "-"
+ pd1: bool = false,
+
+ /// Prefixed by "--"
+ pd2: bool = false,
+
+ /// Prefixed by "/"
+ psl: bool = false,
+
+ const Syntax = union(enum) {
+ /// A flag with no values.
+ flag,
+
+ /// An option which prefixes its (single) value.
+ joined,
+
+ /// An option which is followed by its value.
+ separate,
+
+ /// An option which is either joined to its (non-empty) value, or followed by its value.
+ joined_or_separate,
+
+ /// An option which is both joined to its (first) value, and followed by its (second) value.
+ joined_and_separate,
+
+ /// An option followed by its values, which are separated by commas.
+ comma_joined,
+
+ /// An option which consumes an optional joined argument and any other remaining arguments.
+ remaining_args_joined,
+
+ /// An option which is which takes multiple (separate) arguments.
+ multi_arg: u8,
+ };
+
+ fn matchEql(self: CliArg, arg: []const u8) bool {
+ if (self.pd1 and arg.len >= self.name.len + 1 and
+ mem.startsWith(u8, arg, "-") and mem.eql(u8, arg[1..], self.name))
+ {
+ return true;
+ }
+ if (self.pd2 and arg.len >= self.name.len + 2 and
+ mem.startsWith(u8, arg, "--") and mem.eql(u8, arg[2..], self.name))
+ {
+ return true;
+ }
+ if (self.psl and arg.len >= self.name.len + 1 and
+ mem.startsWith(u8, arg, "/") and mem.eql(u8, arg[1..], self.name))
+ {
+ return true;
+ }
+ return false;
+ }
+
+ fn matchStartsWith(self: CliArg, arg: []const u8) usize {
+ if (self.pd1 and arg.len >= self.name.len + 1 and
+ mem.startsWith(u8, arg, "-") and mem.startsWith(u8, arg[1..], self.name))
+ {
+ return self.name.len + 1;
+ }
+ if (self.pd2 and arg.len >= self.name.len + 2 and
+ mem.startsWith(u8, arg, "--") and mem.startsWith(u8, arg[2..], self.name))
+ {
+ return self.name.len + 2;
+ }
+ if (self.psl and arg.len >= self.name.len + 1 and
+ mem.startsWith(u8, arg, "/") and mem.startsWith(u8, arg[1..], self.name))
+ {
+ return self.name.len + 1;
+ }
+ return 0;
+ }
+};
+
+/// Shortcut function for initializing a `CliArg`
+pub fn flagpd1(name: []const u8) CliArg {
+ return .{
+ .name = name,
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ };
+}
+
+/// Shortcut function for initializing a `CliArg`
+pub fn joinpd1(name: []const u8) CliArg {
+ return .{
+ .name = name,
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ };
+}
+
+/// Shortcut function for initializing a `CliArg`
+pub fn jspd1(name: []const u8) CliArg {
+ return .{
+ .name = name,
+ .syntax = .joined_or_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ };
+}
+
+/// Shortcut function for initializing a `CliArg`
+pub fn sepd1(name: []const u8) CliArg {
+ return .{
+ .name = name,
+ .syntax = .separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ };
+}
src-self-hosted/clang_options_data.zig
@@ -0,0 +1,5632 @@
+// This file is generated by tools/update_clang_options.zig.
+// zig fmt: off
+usingnamespace @import("clang_options.zig");
+pub const data = blk: { @setEvalBranchQuota(6000); break :blk &[_]CliArg{
+jspd1("A"),
+joinpd1("A-"),
+jspd1("B"),
+flagpd1("C"),
+flagpd1("CC"),
+jspd1("D"),
+flagpd1("E"),
+flagpd1("EB"),
+flagpd1("EL"),
+flagpd1("Eonly"),
+jspd1("F"),
+jspd1("G"),
+joinpd1("G="),
+flagpd1("H"),
+jspd1("I"),
+.{
+ .name = "<input>",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = false,
+ .psl = false,
+},
+flagpd1("I-"),
+jspd1("J"),
+jspd1("L"),
+flagpd1("M"),
+flagpd1("MD"),
+jspd1("MF"),
+flagpd1("MG"),
+jspd1("MJ"),
+flagpd1("MM"),
+flagpd1("MMD"),
+flagpd1("MP"),
+jspd1("MQ"),
+jspd1("MT"),
+flagpd1("MV"),
+flagpd1("Mach"),
+joinpd1("O"),
+flagpd1("O0"),
+flagpd1("O4"),
+flagpd1("O"),
+flagpd1("ObjC"),
+flagpd1("ObjC++"),
+joinpd1("Ofast"),
+flagpd1("P"),
+flagpd1("Q"),
+flagpd1("Qn"),
+flagpd1("Qunused-arguments"),
+flagpd1("Qy"),
+joinpd1("R"),
+joinpd1("Rpass="),
+joinpd1("Rpass-analysis="),
+joinpd1("Rpass-missed="),
+flagpd1("S"),
+jspd1("T"),
+jspd1("Tbss"),
+jspd1("Tdata"),
+jspd1("Ttext"),
+jspd1("U"),
+.{
+ .name = "<unknown>",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = false,
+ .psl = false,
+},
+jspd1("V"),
+flagpd1("WCL4"),
+joinpd1("W"),
+.{
+ .name = "Wa,",
+ .syntax = .comma_joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+flagpd1("Wall"),
+flagpd1("Wdeprecated"),
+joinpd1("Wframe-larger-than="),
+.{
+ .name = "Wl,",
+ .syntax = .comma_joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+joinpd1("Wlarge-by-value-copy="),
+flagpd1("Wlarge-by-value-copy"),
+joinpd1("Wlarger-than-"),
+joinpd1("Wlarger-than="),
+flagpd1("Wno-deprecated"),
+joinpd1("Wno-nonportable-cfstrings"),
+flagpd1("Wno-rewrite-macros"),
+flagpd1("Wno-write-strings"),
+joinpd1("Wnonportable-cfstrings"),
+.{
+ .name = "Wp,",
+ .syntax = .comma_joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+flagpd1("Wwrite-strings"),
+flagpd1("X"),
+joinpd1("X"),
+sepd1("Xanalyzer"),
+.{
+ .name = "Xarch_",
+ .syntax = .joined_and_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+sepd1("Xassembler"),
+sepd1("Xclang"),
+sepd1("Xcuda-fatbinary"),
+sepd1("Xcuda-ptxas"),
+sepd1("Xlinker"),
+sepd1("Xopenmp-target"),
+.{
+ .name = "Xopenmp-target=",
+ .syntax = .joined_and_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+sepd1("Xpreprocessor"),
+flagpd1("Z"),
+joinpd1("Z"),
+flagpd1("Z-Xlinker-no-demangle"),
+flagpd1("Z-reserved-lib-cckext"),
+flagpd1("Z-reserved-lib-stdc++"),
+sepd1("Zlinker-input"),
+.{
+ .name = "CLASSPATH",
+ .syntax = .separate,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "CLASSPATH=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("###"),
+.{
+ .name = "AI",
+ .syntax = .joined_or_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Brepro",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Brepro-",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Bt",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Bt+",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "C",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "D",
+ .syntax = .joined_or_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "E",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "EH",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "EP",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "F",
+ .syntax = .joined_or_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "FA",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "FA",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "FC",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "FI",
+ .syntax = .joined_or_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "FR",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "FS",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "FU",
+ .syntax = .joined_or_separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fa",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fd",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fe",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fi",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fm",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fo",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fp",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fr",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Fx",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "G1",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "G2",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GA",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GF",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GF-",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GH",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GL",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GL-",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GR",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GR-",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GS",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GS-",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GT",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GX",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GX-",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "GZ",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Gd",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Ge",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Gh",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Gm",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
+.{
+ .name = "Gm-",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
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+ .name = "Gr",
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+ .pd2 = false,
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+ .name = "Gregcall",
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+ .pd2 = false,
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+},
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+ .pd2 = false,
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+ .pd2 = false,
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+ .name = "d1PP",
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+ .name = "d1reportAllClassLayout",
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+ .name = "d2FastFail",
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+ .name = "diagnostics:column",
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+ .name = "doc",
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+ .name = "errorReport",
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+ .psl = true,
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+.{
+ .name = "execution-charset:",
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+ .name = "fallback",
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+ .psl = true,
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+ .name = "favor",
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+ .psl = true,
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+ .name = "fp:except",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = true,
+},
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+ .name = "fp:except-",
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+.{
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+.{
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+},
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+.{
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+ .name = "print-multi-os-directory",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("print-preamble"),
+.{
+ .name = "print-prog-name=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "print-resource-dir",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "print-search-dirs",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("print-stats"),
+.{
+ .name = "print-supported-cpus",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "print-target-triple",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("fprintf"),
+flagpd1("fno-printf"),
+flagpd1("private_bundle"),
+flagpd1("fprofile-correction"),
+flagpd1("fno-profile-correction"),
+flagpd1("fprofile"),
+flagpd1("fno-profile"),
+flagpd1("fprofile-generate-sampling"),
+flagpd1("fno-profile-generate-sampling"),
+flagpd1("fprofile-reusedist"),
+flagpd1("fno-profile-reusedist"),
+flagpd1("fprofile-values"),
+flagpd1("fno-profile-values"),
+flagpd1("fprotect-parens"),
+flagpd1("fno-protect-parens"),
+flagpd1("pthread"),
+flagpd1("pthreads"),
+.{
+ .name = "ptxas-path=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("r"),
+flagpd1("frange-check"),
+flagpd1("fno-range-check"),
+flagpd1("rdynamic"),
+sepd1("read_only_relocs"),
+flagpd1("freal-4-real-10"),
+flagpd1("fno-real-4-real-10"),
+flagpd1("freal-4-real-16"),
+flagpd1("fno-real-4-real-16"),
+flagpd1("freal-4-real-8"),
+flagpd1("fno-real-4-real-8"),
+flagpd1("freal-8-real-10"),
+flagpd1("fno-real-8-real-10"),
+flagpd1("freal-8-real-16"),
+flagpd1("fno-real-8-real-16"),
+flagpd1("freal-8-real-4"),
+flagpd1("fno-real-8-real-4"),
+flagpd1("frealloc-lhs"),
+flagpd1("fno-realloc-lhs"),
+sepd1("record-command-line"),
+flagpd1("frecursive"),
+flagpd1("fno-recursive"),
+flagpd1("fregs-graph"),
+flagpd1("fno-regs-graph"),
+flagpd1("relaxed-aliasing"),
+.{
+ .name = "relocatable-pch",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("remap"),
+sepd1("remap-file"),
+flagpd1("frename-registers"),
+flagpd1("fno-rename-registers"),
+flagpd1("freorder-blocks"),
+flagpd1("fno-reorder-blocks"),
+flagpd1("frepack-arrays"),
+flagpd1("fno-repack-arrays"),
+sepd1("resource-dir"),
+joinpd1("resource-dir="),
+flagpd1("rewrite-legacy-objc"),
+flagpd1("rewrite-macros"),
+flagpd1("rewrite-objc"),
+flagpd1("rewrite-test"),
+flagpd1("fripa"),
+flagpd1("fno-ripa"),
+sepd1("rpath"),
+.{
+ .name = "rsp-quoting=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "rtlib=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("s"),
+.{
+ .name = "save-stats",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "save-stats=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "save-temps",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "save-temps=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("fschedule-insns2"),
+flagpd1("fno-schedule-insns2"),
+flagpd1("fschedule-insns"),
+flagpd1("fno-schedule-insns"),
+flagpd1("fsecond-underscore"),
+flagpd1("fno-second-underscore"),
+.{
+ .name = "sectalign",
+ .syntax = .{ .multi_arg = 3 },
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+.{
+ .name = "sectcreate",
+ .syntax = .{ .multi_arg = 3 },
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+.{
+ .name = "sectobjectsymbols",
+ .syntax = .{ .multi_arg = 2 },
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+.{
+ .name = "sectorder",
+ .syntax = .{ .multi_arg = 3 },
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+flagpd1("fsee"),
+flagpd1("fno-see"),
+jspd1("seg1addr"),
+sepd1("seg_addr_table"),
+sepd1("seg_addr_table_filename"),
+.{
+ .name = "segaddr",
+ .syntax = .{ .multi_arg = 2 },
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+.{
+ .name = "segcreate",
+ .syntax = .{ .multi_arg = 3 },
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+flagpd1("seglinkedit"),
+.{
+ .name = "segprot",
+ .syntax = .{ .multi_arg = 3 },
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+joinpd1("segs_read_"),
+sepd1("segs_read_only_addr"),
+sepd1("segs_read_write_addr"),
+flagpd1("setup-static-analyzer"),
+.{
+ .name = "shared",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("shared-libgcc"),
+flagpd1("shared-libsan"),
+flagpd1("show-encoding"),
+.{
+ .name = "show-includes",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("show-inst"),
+flagpd1("fsign-zero"),
+flagpd1("fno-sign-zero"),
+flagpd1("fsignaling-nans"),
+flagpd1("fno-signaling-nans"),
+flagpd1("single_module"),
+flagpd1("fsingle-precision-constant"),
+flagpd1("fno-single-precision-constant"),
+flagpd1("fspec-constr-count"),
+flagpd1("fno-spec-constr-count"),
+.{
+ .name = "specs",
+ .syntax = .separate,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "specs=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+sepd1("split-dwarf-file"),
+sepd1("split-dwarf-output"),
+flagpd1("split-stacks"),
+flagpd1("fstack-arrays"),
+flagpd1("fno-stack-arrays"),
+flagpd1("fstack-check"),
+flagpd1("fno-stack-check"),
+sepd1("stack-protector"),
+sepd1("stack-protector-buffer-size"),
+.{
+ .name = "static",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("static-define"),
+flagpd1("static-libgcc"),
+flagpd1("static-libgfortran"),
+flagpd1("static-libsan"),
+flagpd1("static-libstdc++"),
+flagpd1("static-openmp"),
+flagpd1("static-pie"),
+joinpd1("stats-file="),
+.{
+ .name = "std=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+joinpd1("std-default="),
+.{
+ .name = "stdlib=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+jspd1("stdlib++-isystem"),
+flagpd1("fstrength-reduce"),
+flagpd1("fno-strength-reduce"),
+jspd1("sub_library"),
+jspd1("sub_umbrella"),
+flagpd1("sys-header-deps"),
+.{
+ .name = "system-header-prefix=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("t"),
+.{
+ .name = "target=",
+ .syntax = .joined,
+ .zig_equivalent = .target,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+sepd1("target-abi"),
+sepd1("target-cpu"),
+sepd1("target-feature"),
+.{
+ .name = "target",
+ .syntax = .separate,
+ .zig_equivalent = .target,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+sepd1("target-linker-version"),
+joinpd1("target-sdk-version="),
+flagpd1("templight-dump"),
+flagpd1("test-coverage"),
+flagpd1("time"),
+flagpd1("ftls-model"),
+flagpd1("fno-tls-model"),
+flagpd1("ftracer"),
+flagpd1("fno-tracer"),
+.{
+ .name = "traditional",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+.{
+ .name = "traditional-cpp",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("ftree-dce"),
+flagpd1("fno-tree-dce"),
+flagpd1("ftree_loop_im"),
+flagpd1("fno-tree_loop_im"),
+flagpd1("ftree_loop_ivcanon"),
+flagpd1("fno-tree_loop_ivcanon"),
+flagpd1("ftree_loop_linear"),
+flagpd1("fno-tree_loop_linear"),
+flagpd1("ftree-salias"),
+flagpd1("fno-tree-salias"),
+flagpd1("ftree-ter"),
+flagpd1("fno-tree-ter"),
+flagpd1("ftree-vectorizer-verbose"),
+flagpd1("fno-tree-vectorizer-verbose"),
+flagpd1("ftree-vrp"),
+flagpd1("fno-tree-vrp"),
+.{
+ .name = "trigraphs",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("trim-egraph"),
+sepd1("triple"),
+joinpd1("triple="),
+flagpd1("twolevel_namespace"),
+flagpd1("twolevel_namespace_hints"),
+jspd1("u"),
+sepd1("umbrella"),
+flagpd1("undef"),
+jspd1("undefined"),
+flagpd1("funderscoring"),
+flagpd1("fno-underscoring"),
+sepd1("unexported_symbols_list"),
+flagpd1("funroll-all-loops"),
+flagpd1("fno-unroll-all-loops"),
+flagpd1("funsafe-loop-optimizations"),
+flagpd1("fno-unsafe-loop-optimizations"),
+flagpd1("funswitch-loops"),
+flagpd1("fno-unswitch-loops"),
+.{
+ .name = "unwindlib=",
+ .syntax = .joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("fuse-linker-plugin"),
+flagpd1("fno-use-linker-plugin"),
+flagpd1("v"),
+flagpd1("fvariable-expansion-in-unroller"),
+flagpd1("fno-variable-expansion-in-unroller"),
+flagpd1("fvect-cost-model"),
+flagpd1("fno-vect-cost-model"),
+flagpd1("vectorize-loops"),
+flagpd1("vectorize-slp"),
+flagpd1("verify"),
+.{
+ .name = "verify=",
+ .syntax = .comma_joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+.{
+ .name = "verify-debug-info",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = false,
+ .pd2 = true,
+ .psl = false,
+},
+flagpd1("verify-ignore-unexpected"),
+.{
+ .name = "verify-ignore-unexpected=",
+ .syntax = .comma_joined,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = false,
+ .psl = false,
+},
+flagpd1("verify-pch"),
+flagpd1("version"),
+.{
+ .name = "via-file-asm",
+ .syntax = .flag,
+ .zig_equivalent = .other,
+ .pd1 = true,
+ .pd2 = true,
+ .psl = false,
+},
+joinpd1("vtordisp-mode="),
+flagpd1("w"),
+sepd1("weak_framework"),
+sepd1("weak_library"),
+sepd1("weak_reference_mismatches"),
+joinpd1("weak-l"),
+flagpd1("fweb"),
+flagpd1("fno-web"),
+flagpd1("whatsloaded"),
+flagpd1("fwhole-file"),
+flagpd1("fno-whole-file"),
+flagpd1("fwhole-program"),
+flagpd1("fno-whole-program"),
+flagpd1("whyload"),
+jspd1("working-directory"),
+joinpd1("working-directory="),
+jspd1("x"),
+joinpd1("y"),
+sepd1("z"),
+};};
src-self-hosted/stage2.zig
@@ -113,6 +113,7 @@ const Error = extern enum {
TargetHasNoDynamicLinker,
InvalidAbiVersion,
InvalidOperatingSystemVersion,
+ UnknownClangOption,
};
const FILE = std.c.FILE;
@@ -1215,3 +1216,157 @@ fn convertSlice(slice: [][:0]u8, ptr: *[*][*:0]u8, len: *usize) !void {
}
ptr.* = new_slice.ptr;
}
+
+const clang_args = @import("clang_options.zig").list;
+
+// ABI warning
+pub const ClangArgIterator = extern struct {
+ has_next: bool,
+ zig_equivalent: ZigEquivalent,
+ only_arg: [*:0]const u8,
+ second_arg: [*:0]const u8,
+ other_args_ptr: [*]const [*:0]const u8,
+ other_args_len: usize,
+ argv_ptr: [*]const [*:0]const u8,
+ argv_len: usize,
+ next_index: usize,
+
+ // ABI warning
+ pub const ZigEquivalent = extern enum {
+ target,
+ o,
+ c,
+ other,
+ positional,
+ l,
+ };
+
+ fn init(argv: []const [*:0]const u8) ClangArgIterator {
+ return .{
+ .next_index = 2, // `zig cc foo` this points to `foo`
+ .has_next = argv.len > 2,
+ .zig_equivalent = undefined,
+ .only_arg = undefined,
+ .second_arg = undefined,
+ .other_args_ptr = undefined,
+ .other_args_len = undefined,
+ .argv_ptr = argv.ptr,
+ .argv_len = argv.len,
+ };
+ }
+
+ fn next(self: *ClangArgIterator) !void {
+ assert(self.has_next);
+ assert(self.next_index < self.argv_len);
+ // In this state we know that the parameter we are looking at is a root parameter
+ // rather than an argument to a parameter.
+ self.other_args_ptr = self.argv_ptr + self.next_index;
+ self.other_args_len = 1; // We adjust this value below when necessary.
+ const arg = mem.span(self.argv_ptr[self.next_index]);
+ self.next_index += 1;
+ defer {
+ if (self.next_index >= self.argv_len) self.has_next = false;
+ }
+
+ if (!mem.startsWith(u8, arg, "-")) {
+ self.zig_equivalent = .positional;
+ self.only_arg = arg.ptr;
+ return;
+ }
+
+ find_clang_arg: for (clang_args) |clang_arg| switch (clang_arg.syntax) {
+ .flag => if (clang_arg.matchEql(arg)) {
+ self.zig_equivalent = clang_arg.zig_equivalent;
+ self.only_arg = arg.ptr;
+
+ break :find_clang_arg;
+ },
+ .joined, .comma_joined => {
+ // Example: --target=foo
+ const prefix_len = clang_arg.matchStartsWith(arg);
+ if (prefix_len != 0) {
+ self.zig_equivalent = clang_arg.zig_equivalent;
+ self.only_arg = arg.ptr + prefix_len; // This will skip over the "--target=" part.
+
+ break :find_clang_arg;
+ }
+ },
+ .joined_or_separate => {
+ // Examples: `-lfoo`, `-l foo`
+ const prefix_len = clang_arg.matchStartsWith(arg);
+ if (prefix_len == arg.len) {
+ if (self.next_index >= self.argv_len) {
+ std.debug.warn("Expected parameter after '{}'\n", .{arg});
+ process.exit(1);
+ }
+ self.only_arg = self.argv_ptr[self.next_index];
+ self.next_index += 1;
+ self.other_args_len += 1;
+ self.zig_equivalent = clang_arg.zig_equivalent;
+
+ break :find_clang_arg;
+ } else if (prefix_len != 0) {
+ self.zig_equivalent = clang_arg.zig_equivalent;
+ self.only_arg = arg.ptr + prefix_len;
+
+ break :find_clang_arg;
+ }
+ },
+ .joined_and_separate => {
+ // Example: `-Xopenmp-target=riscv64-linux-unknown foo`
+ const prefix_len = clang_arg.matchStartsWith(arg);
+ if (prefix_len != 0) {
+ self.only_arg = arg.ptr + prefix_len;
+ if (self.next_index >= self.argv_len) {
+ std.debug.warn("Expected parameter after '{}'\n", .{arg});
+ process.exit(1);
+ }
+ self.second_arg = self.argv_ptr[self.next_index];
+ self.next_index += 1;
+ self.other_args_len += 1;
+ self.zig_equivalent = clang_arg.zig_equivalent;
+ break :find_clang_arg;
+ }
+ },
+ .separate => if (clang_arg.matchEql(arg)) {
+ if (self.next_index >= self.argv_len) {
+ std.debug.warn("Expected parameter after '{}'\n", .{arg});
+ process.exit(1);
+ }
+ self.only_arg = self.argv_ptr[self.next_index];
+ self.next_index += 1;
+ self.other_args_len += 1;
+ self.zig_equivalent = clang_arg.zig_equivalent;
+ break :find_clang_arg;
+ },
+ .remaining_args_joined => {
+ const prefix_len = clang_arg.matchStartsWith(arg);
+ if (prefix_len != 0) {
+ @panic("TODO");
+ }
+ },
+ .multi_arg => if (clang_arg.matchEql(arg)) {
+ @panic("TODO");
+ },
+ }
+ else {
+ std.debug.warn("Unknown Clang option: '{}'\n", .{arg});
+ process.exit(1);
+ }
+ }
+};
+
+export fn stage2_clang_arg_iterator(
+ result: *ClangArgIterator,
+ argc: usize,
+ argv: [*]const [*:0]const u8,
+) void {
+ result.* = ClangArgIterator.init(argv[0..argc]);
+}
+
+export fn stage2_clang_arg_next(it: *ClangArgIterator) Error {
+ it.next() catch |err| switch (err) {
+ error.UnknownClangOption => return .UnknownClangOption,
+ };
+ return .None;
+}
tools/process_headers.zig
@@ -1,14 +1,14 @@
-// To get started, run this tool with no args and read the help message.
-//
-// The build systems of musl-libc and glibc require specifying a single target
-// architecture. Meanwhile, Zig supports out-of-the-box cross compilation for
-// every target. So the process to create libc headers that Zig ships is to use
-// this tool.
-// First, use the musl/glibc build systems to create installations of all the
-// targets in the `glibc_targets`/`musl_targets` variables.
-// Next, run this tool to create a new directory which puts .h files into
-// <arch> subdirectories, with `generic` being files that apply to all architectures.
-// You'll then have to manually update Zig source repo with these new files.
+//! To get started, run this tool with no args and read the help message.
+//!
+//! The build systems of musl-libc and glibc require specifying a single target
+//! architecture. Meanwhile, Zig supports out-of-the-box cross compilation for
+//! every target. So the process to create libc headers that Zig ships is to use
+//! this tool.
+//! First, use the musl/glibc build systems to create installations of all the
+//! targets in the `glibc_targets`/`musl_targets` variables.
+//! Next, run this tool to create a new directory which puts .h files into
+//! <arch> subdirectories, with `generic` being files that apply to all architectures.
+//! You'll then have to manually update Zig source repo with these new files.
const std = @import("std");
const Arch = std.Target.Cpu.Arch;
tools/update_clang_options.zig
@@ -0,0 +1,274 @@
+//! To get started, run this tool with no args and read the help message.
+//!
+//! Clang has a file "options.td" which describes all of its command line parameter options.
+//! When using `zig cc`, Zig acts as a proxy between the user and Clang. It does not need
+//! to understand all the parameters, but it does need to understand some of them, such as
+//! the target. This means that Zig must understand when a C command line parameter expects
+//! to "consume" the next parameter on the command line.
+//!
+//! For example, `-z -target` would mean to pass `-target` to the linker, whereas `-E -target`
+//! would mean that the next parameter specifies the target.
+
+const std = @import("std");
+const fs = std.fs;
+const assert = std.debug.assert;
+const json = std.json;
+
+const KnownOpt = struct {
+ name: []const u8,
+
+ /// Corresponds to stage.zig ClangArgIterator.Kind
+ ident: []const u8,
+};
+
+const known_options = [_]KnownOpt{
+ .{
+ .name = "target",
+ .ident = "target",
+ },
+ .{
+ .name = "o",
+ .ident = "o",
+ },
+ .{
+ .name = "c",
+ .ident = "c",
+ },
+ .{
+ .name = "l",
+ .ident = "l",
+ },
+};
+
+const blacklisted_options = [_][]const u8{};
+
+fn knownOption(name: []const u8) ?[]const u8 {
+ const chopped_name = if (std.mem.endsWith(u8, name, "=")) name[0 .. name.len - 1] else name;
+ for (known_options) |item| {
+ if (std.mem.eql(u8, chopped_name, item.name)) {
+ return item.ident;
+ }
+ }
+ return null;
+}
+
+pub fn main() anyerror!void {
+ var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
+ defer arena.deinit();
+
+ const allocator = &arena.allocator;
+ const args = try std.process.argsAlloc(allocator);
+
+ if (args.len <= 1) {
+ usageAndExit(std.io.getStdErr(), args[0], 1);
+ }
+ if (std.mem.eql(u8, args[1], "--help")) {
+ usageAndExit(std.io.getStdOut(), args[0], 0);
+ }
+ if (args.len < 3) {
+ usageAndExit(std.io.getStdErr(), args[0], 1);
+ }
+
+ const llvm_tblgen_exe = args[1];
+ if (std.mem.startsWith(u8, llvm_tblgen_exe, "-")) {
+ usageAndExit(std.io.getStdErr(), args[0], 1);
+ }
+
+ const llvm_src_root = args[2];
+ if (std.mem.startsWith(u8, llvm_src_root, "-")) {
+ usageAndExit(std.io.getStdErr(), args[0], 1);
+ }
+
+ const child_args = [_][]const u8{
+ llvm_tblgen_exe,
+ "--dump-json",
+ try std.fmt.allocPrint(allocator, "{}/clang/include/clang/Driver/Options.td", .{llvm_src_root}),
+ try std.fmt.allocPrint(allocator, "-I={}/llvm/include", .{llvm_src_root}),
+ try std.fmt.allocPrint(allocator, "-I={}/clang/include/clang/Driver", .{llvm_src_root}),
+ };
+
+ const child_result = try std.ChildProcess.exec2(.{
+ .allocator = allocator,
+ .argv = &child_args,
+ .max_output_bytes = 100 * 1024 * 1024,
+ });
+
+ std.debug.warn("{}\n", .{child_result.stderr});
+
+ const json_text = switch (child_result.term) {
+ .Exited => |code| if (code == 0) child_result.stdout else {
+ std.debug.warn("llvm-tblgen exited with code {}\n", .{code});
+ std.process.exit(1);
+ },
+ else => {
+ std.debug.warn("llvm-tblgen crashed\n", .{});
+ std.process.exit(1);
+ },
+ };
+
+ var parser = json.Parser.init(allocator, false);
+ const tree = try parser.parse(json_text);
+ const root_map = &tree.root.Object;
+
+ var all_names = std.ArrayList([]const u8).init(allocator);
+ {
+ var it = root_map.iterator();
+ it_map: while (it.next()) |kv| {
+ if (kv.key.len == 0) continue;
+ if (kv.key[0] == '!') continue;
+ if (kv.value != .Object) continue;
+ if (!kv.value.Object.contains("NumArgs")) continue;
+ if (!kv.value.Object.contains("Name")) continue;
+ for (blacklisted_options) |blacklisted_key| {
+ if (std.mem.eql(u8, blacklisted_key, kv.key)) continue :it_map;
+ }
+ if (kv.value.Object.get("Name").?.value.String.len == 0) continue;
+ try all_names.append(kv.key);
+ }
+ }
+ std.sort.sort([]const u8, all_names.span(), nameLessThan);
+
+ var stdout_bos = std.io.bufferedOutStream(std.io.getStdOut().outStream());
+ const stdout = stdout_bos.outStream();
+ try stdout.writeAll(
+ \\// This file is generated by tools/update_clang_options.zig.
+ \\// zig fmt: off
+ \\usingnamespace @import("clang_options.zig");
+ \\pub const data = blk: { @setEvalBranchQuota(6000); break :blk &[_]CliArg{
+ \\
+ );
+
+ for (all_names.span()) |key| {
+ const obj = &root_map.get(key).?.value.Object;
+ const name = obj.get("Name").?.value.String;
+ var pd1 = false;
+ var pd2 = false;
+ var pslash = false;
+ for (obj.get("Prefixes").?.value.Array.span()) |prefix_json| {
+ const prefix = prefix_json.String;
+ if (std.mem.eql(u8, prefix, "-")) {
+ pd1 = true;
+ } else if (std.mem.eql(u8, prefix, "--")) {
+ pd2 = true;
+ } else if (std.mem.eql(u8, prefix, "/")) {
+ pslash = true;
+ } else {
+ std.debug.warn("{} (key {}) has unrecognized prefix '{}'\n", .{ name, key, prefix });
+ std.process.exit(1);
+ }
+ }
+ const num_args = @intCast(u8, obj.get("NumArgs").?.value.Integer);
+ const syntax_str: []const u8 = blk: {
+ for (obj.get("!superclasses").?.value.Array.span()) |superclass_json| {
+ const superclass = superclass_json.String;
+ if (std.mem.eql(u8, superclass, "Joined")) {
+ break :blk ".joined";
+ } else if (std.mem.eql(u8, superclass, "CLJoined")) {
+ break :blk ".joined";
+ } else if (std.mem.eql(u8, superclass, "CLIgnoredJoined")) {
+ break :blk ".joined";
+ } else if (std.mem.eql(u8, superclass, "CLCompileJoined")) {
+ break :blk ".joined";
+ } else if (std.mem.eql(u8, superclass, "JoinedOrSeparate")) {
+ break :blk ".joined_or_separate";
+ } else if (std.mem.eql(u8, superclass, "CLJoinedOrSeparate")) {
+ break :blk ".joined_or_separate";
+ } else if (std.mem.eql(u8, superclass, "CLCompileJoinedOrSeparate")) {
+ break :blk ".joined_or_separate";
+ } else if (std.mem.eql(u8, superclass, "Flag")) {
+ break :blk ".flag";
+ } else if (std.mem.eql(u8, superclass, "CLFlag")) {
+ break :blk ".flag";
+ } else if (std.mem.eql(u8, superclass, "CLIgnoredFlag")) {
+ break :blk ".flag";
+ } else if (std.mem.eql(u8, superclass, "Separate")) {
+ break :blk ".separate";
+ } else if (std.mem.eql(u8, superclass, "JoinedAndSeparate")) {
+ break :blk ".joined_and_separate";
+ } else if (std.mem.eql(u8, superclass, "CommaJoined")) {
+ break :blk ".comma_joined";
+ } else if (std.mem.eql(u8, superclass, "CLRemainingArgsJoined")) {
+ break :blk ".remaining_args_joined";
+ } else if (std.mem.eql(u8, superclass, "MultiArg")) {
+ break :blk try std.fmt.allocPrint(allocator, ".{{ .multi_arg = {} }}", .{num_args});
+ }
+ }
+ if (std.mem.eql(u8, name, "<input>")) {
+ break :blk ".flag";
+ } else if (std.mem.eql(u8, name, "<unknown>")) {
+ break :blk ".flag";
+ }
+ const kind_def = obj.get("Kind").?.value.Object.get("def").?.value.String;
+ if (std.mem.eql(u8, kind_def, "KIND_FLAG")) {
+ break :blk ".flag";
+ }
+ std.debug.warn("{} (key {}) has unrecognized superclasses:\n", .{ name, key });
+ for (obj.get("!superclasses").?.value.Array.span()) |superclass_json| {
+ std.debug.warn(" {}\n", .{superclass_json.String});
+ }
+ std.process.exit(1);
+ };
+ if (knownOption(name)) |ident| {
+ try stdout.print(
+ \\.{{
+ \\ .name = "{}",
+ \\ .syntax = {},
+ \\ .zig_equivalent = .{},
+ \\ .pd1 = {},
+ \\ .pd2 = {},
+ \\ .psl = {},
+ \\}},
+ \\
+ , .{ name, syntax_str, ident, pd1, pd2, pslash });
+ } else if (pd1 and !pd2 and !pslash and
+ std.mem.eql(u8, syntax_str, ".flag"))
+ {
+ try stdout.print("flagpd1(\"{}\"),\n", .{name});
+ } else if (pd1 and !pd2 and !pslash and
+ std.mem.eql(u8, syntax_str, ".joined"))
+ {
+ try stdout.print("joinpd1(\"{}\"),\n", .{name});
+ } else if (pd1 and !pd2 and !pslash and
+ std.mem.eql(u8, syntax_str, ".joined_or_separate"))
+ {
+ try stdout.print("jspd1(\"{}\"),\n", .{name});
+ } else if (pd1 and !pd2 and !pslash and
+ std.mem.eql(u8, syntax_str, ".separate"))
+ {
+ try stdout.print("sepd1(\"{}\"),\n", .{name});
+ } else {
+ try stdout.print(
+ \\.{{
+ \\ .name = "{}",
+ \\ .syntax = {},
+ \\ .zig_equivalent = .other,
+ \\ .pd1 = {},
+ \\ .pd2 = {},
+ \\ .psl = {},
+ \\}},
+ \\
+ , .{ name, syntax_str, pd1, pd2, pslash });
+ }
+ }
+
+ try stdout.writeAll(
+ \\};};
+ \\
+ );
+
+ try stdout_bos.flush();
+}
+
+fn nameLessThan(a: []const u8, b: []const u8) bool {
+ return std.mem.lessThan(u8, a, b);
+}
+
+fn usageAndExit(file: fs.File, arg0: []const u8, code: u8) noreturn {
+ file.outStream().print(
+ \\Usage: {} /path/to/llvm-tblgen /path/to/git/llvm/llvm-project
+ \\
+ \\Prints to stdout Zig code which you can use to replace the file src-self-hosted/clang_options_data.zig.
+ \\
+ , .{arg0}) catch std.process.exit(1);
+ std.process.exit(code);
+}