mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-13 04:48:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

build.zig: restore the ability to bootstrap with zig0 via option

Browse Source
This commit is contained in:
Andrew Kelley 2022-02-17 23:49:13 -07:00
parent dd12a7b1e5
commit eee500c0b5
1 changed files with 73 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

82
build.zig
View File

@ -129,6 +129,7 @@ pub fn build(b: *Builder) !void {
const force_gpa = b.option(bool, "force-gpa", "Force the compiler to use GeneralPurposeAllocator") orelse false;
const link_libc = b.option(bool, "force-link-libc", "Force self-hosted compiler to link libc") orelse enable_llvm;
const strip = b.option(bool, "strip", "Omit debug information") orelse false;
const use_zig0 = b.option(bool, "zig0", "Bootstrap using zig0") orelse false;
const mem_leak_frames: u32 = b.option(u32, "mem-leak-frames", "How many stack frames to print when a memory leak occurs. Tests get 2x this amount.") orelse blk: {
if (strip) break :blk @as(u32, 0);
@ -136,7 +137,11 @@ pub fn build(b: *Builder) !void {
break :blk 4;
};
const main_file: []const u8 = if (is_stage1) "src/stage1.zig" else "src/main.zig";
const main_file: ?[]const u8 = mf: {
if (!is_stage1) break :mf "src/main.zig";
if (use_zig0) break :mf null;
break :mf "src/stage1.zig";
};
const exe = b.addExecutable("zig", main_file);
exe.strip = strip;
@ -245,17 +250,76 @@ pub fn build(b: *Builder) !void {
softfloat.addCSourceFiles(&softfloat_sources, &[_][]const u8{ "-std=c99", "-O3" });
softfloat.single_threaded = single_threaded;
exe.addIncludePath("src");
exe.addIncludePath("deps/SoftFloat-3e/source/include");
exe.addIncludePath("deps/SoftFloat-3e-prebuilt");
const zig0 = b.addExecutable("zig0", null);
zig0.addCSourceFiles(&.{"src/stage1/zig0.cpp"}, &exe_cflags);
zig0.addIncludePath("zig-cache/tmp"); // for config.h
zig0.defineCMacro("ZIG_VERSION_MAJOR", b.fmt("{d}", .{zig_version.major}));
zig0.defineCMacro("ZIG_VERSION_MINOR", b.fmt("{d}", .{zig_version.minor}));
zig0.defineCMacro("ZIG_VERSION_PATCH", b.fmt("{d}", .{zig_version.patch}));
zig0.defineCMacro("ZIG_VERSION_STRING", b.fmt("\"{s}\"", .{version}));
exe.defineCMacro("ZIG_LINK_MODE", "Static");
for ([_]*std.build.LibExeObjStep{ zig0, exe, test_stage2 }) |artifact| {
artifact.addIncludePath("src");
artifact.addIncludePath("deps/SoftFloat-3e/source/include");
artifact.addIncludePath("deps/SoftFloat-3e-prebuilt");
exe.addCSourceFiles(&stage1_sources, &exe_cflags);
exe.addCSourceFiles(&optimized_c_sources, &[_][]const u8{ "-std=c99", "-O3" });
artifact.defineCMacro("ZIG_LINK_MODE", "Static");
exe.linkLibrary(softfloat);
exe.linkLibCpp();
artifact.addCSourceFiles(&stage1_sources, &exe_cflags);
artifact.addCSourceFiles(&optimized_c_sources, &[_][]const u8{ "-std=c99", "-O3" });
artifact.linkLibrary(softfloat);
artifact.linkLibCpp();
}
try addStaticLlvmOptionsToExe(zig0);
const zig1_obj_ext = target.getObjectFormat().fileExt(target.getCpuArch());
const zig1_obj_path = b.pathJoin(&.{ "zig-cache", "tmp", b.fmt("zig1{s}", .{zig1_obj_ext}) });
const zig1_compiler_rt_path = b.pathJoin(&.{ b.pathFromRoot("lib"), "std", "special", "compiler_rt.zig" });
const zig1_obj = zig0.run();
zig1_obj.addArgs(&.{
"src/stage1.zig",
"-target",
try target.zigTriple(b.allocator),
"-mcpu=baseline",
"--name",
"zig1",
"--zig-lib-dir",
b.pathFromRoot("lib"),
b.fmt("-femit-bin={s}", .{b.pathFromRoot(zig1_obj_path)}),
"-fcompiler-rt",
"-lc",
});
{
zig1_obj.addArgs(&.{ "--pkg-begin", "build_options" });
zig1_obj.addFileSourceArg(exe_options.getSource());
zig1_obj.addArgs(&.{ "--pkg-end", "--pkg-begin", "compiler_rt", zig1_compiler_rt_path, "--pkg-end" });
}
switch (mode) {
.Debug => {},
.ReleaseFast => {
zig1_obj.addArg("-OReleaseFast");
zig1_obj.addArg("--strip");
},
.ReleaseSafe => {
zig1_obj.addArg("-OReleaseSafe");
zig1_obj.addArg("--strip");
},
.ReleaseSmall => {
zig1_obj.addArg("-OReleaseSmall");
zig1_obj.addArg("--strip");
},
}
if (single_threaded orelse false) {
zig1_obj.addArg("-fsingle-threaded");
}
if (use_zig0) {
exe.step.dependOn(&zig1_obj.step);
exe.addObjectFile(zig1_obj_path);
}
// This is intentionally a dummy path. stage1.zig tries to @import("compiler_rt") in case
// of being built by cmake. But when built by zig it's gonna get a compiler_rt so that