zig/build.zig
2018-05-17 23:21:44 -04:00

256 lines
9.1 KiB
Zig

const builtin = @import("builtin");
const std = @import("std");
const Builder = std.build.Builder;
const tests = @import("test/tests.zig");
const os = std.os;
const BufMap = std.BufMap;
const warn = std.debug.warn;
const mem = std.mem;
const ArrayList = std.ArrayList;
const Buffer = std.Buffer;
const io = std.io;
pub fn build(b: &Builder) !void {
const mode = b.standardReleaseOptions();
var docgen_exe = b.addExecutable("docgen", "doc/docgen.zig");
const rel_zig_exe = try os.path.relative(b.allocator, b.build_root, b.zig_exe);
var docgen_cmd = b.addCommand(null, b.env_map, [][]const u8{
docgen_exe.getOutputPath(),
rel_zig_exe,
"doc/langref.html.in",
os.path.join(b.allocator, b.cache_root, "langref.html") catch unreachable,
});
docgen_cmd.step.dependOn(&docgen_exe.step);
const docs_step = b.step("docs", "Build documentation");
docs_step.dependOn(&docgen_cmd.step);
const test_step = b.step("test", "Run all the tests");
// find the stage0 build artifacts because we're going to re-use config.h and zig_cpp library
const build_info = try b.exec([][]const u8{
b.zig_exe,
"BUILD_INFO",
});
var index: usize = 0;
const cmake_binary_dir = nextValue(&index, build_info);
const cxx_compiler = nextValue(&index, build_info);
const llvm_config_exe = nextValue(&index, build_info);
const lld_include_dir = nextValue(&index, build_info);
const lld_libraries = nextValue(&index, build_info);
const std_files = nextValue(&index, build_info);
const c_header_files = nextValue(&index, build_info);
const dia_guids_lib = nextValue(&index, build_info);
const llvm = findLLVM(b, llvm_config_exe) catch unreachable;
var exe = b.addExecutable("zig", "src-self-hosted/main.zig");
exe.setBuildMode(mode);
// This is for finding /lib/libz.a on alpine linux.
// TODO turn this into -Dextra-lib-path=/lib option
exe.addLibPath("/lib");
exe.addIncludeDir("src");
exe.addIncludeDir(cmake_binary_dir);
addCppLib(b, exe, cmake_binary_dir, "zig_cpp");
if (lld_include_dir.len != 0) {
exe.addIncludeDir(lld_include_dir);
var it = mem.split(lld_libraries, ";");
while (it.next()) |lib| {
exe.addObjectFile(lib);
}
} else {
addCppLib(b, exe, cmake_binary_dir, "embedded_lld_elf");
addCppLib(b, exe, cmake_binary_dir, "embedded_lld_coff");
addCppLib(b, exe, cmake_binary_dir, "embedded_lld_lib");
}
dependOnLib(exe, llvm);
if (exe.target.getOs() == builtin.Os.linux) {
const libstdcxx_path_padded = try b.exec([][]const u8{
cxx_compiler,
"-print-file-name=libstdc++.a",
});
const libstdcxx_path = ??mem.split(libstdcxx_path_padded, "\r\n").next();
if (mem.eql(u8, libstdcxx_path, "libstdc++.a")) {
warn(
\\Unable to determine path to libstdc++.a
\\On Fedora, install libstdc++-static and try again.
\\
);
return error.RequiredLibraryNotFound;
}
exe.addObjectFile(libstdcxx_path);
exe.linkSystemLibrary("pthread");
} else if (exe.target.isDarwin()) {
exe.linkSystemLibrary("c++");
}
if (dia_guids_lib.len != 0) {
exe.addObjectFile(dia_guids_lib);
}
if (exe.target.getOs() != builtin.Os.windows) {
exe.linkSystemLibrary("xml2");
}
exe.linkSystemLibrary("c");
b.default_step.dependOn(&exe.step);
const skip_self_hosted = b.option(bool, "skip-self-hosted", "Main test suite skips building self hosted compiler") ?? false;
if (!skip_self_hosted) {
test_step.dependOn(&exe.step);
}
const verbose_link_exe = b.option(bool, "verbose-link", "Print link command for self hosted compiler") ?? false;
exe.setVerboseLink(verbose_link_exe);
b.installArtifact(exe);
installStdLib(b, std_files);
installCHeaders(b, c_header_files);
const test_filter = b.option([]const u8, "test-filter", "Skip tests that do not match filter");
const with_lldb = b.option(bool, "with-lldb", "Run tests in LLDB to get a backtrace if one fails") ?? false;
test_step.dependOn(docs_step);
test_step.dependOn(tests.addPkgTests(b, test_filter, "test/behavior.zig", "behavior", "Run the behavior tests", with_lldb));
test_step.dependOn(tests.addPkgTests(b, test_filter, "std/index.zig", "std", "Run the standard library tests", with_lldb));
test_step.dependOn(tests.addPkgTests(b, test_filter, "std/special/compiler_rt/index.zig", "compiler-rt", "Run the compiler_rt tests", with_lldb));
test_step.dependOn(tests.addCompareOutputTests(b, test_filter));
test_step.dependOn(tests.addBuildExampleTests(b, test_filter));
test_step.dependOn(tests.addCompileErrorTests(b, test_filter));
test_step.dependOn(tests.addAssembleAndLinkTests(b, test_filter));
test_step.dependOn(tests.addRuntimeSafetyTests(b, test_filter));
test_step.dependOn(tests.addTranslateCTests(b, test_filter));
test_step.dependOn(tests.addGenHTests(b, test_filter));
}
fn dependOnLib(lib_exe_obj: &std.build.LibExeObjStep, dep: &const LibraryDep) void {
for (dep.libdirs.toSliceConst()) |lib_dir| {
lib_exe_obj.addLibPath(lib_dir);
}
for (dep.system_libs.toSliceConst()) |lib| {
lib_exe_obj.linkSystemLibrary(lib);
}
for (dep.libs.toSliceConst()) |lib| {
lib_exe_obj.addObjectFile(lib);
}
for (dep.includes.toSliceConst()) |include_path| {
lib_exe_obj.addIncludeDir(include_path);
}
}
fn addCppLib(b: &Builder, lib_exe_obj: &std.build.LibExeObjStep, cmake_binary_dir: []const u8, lib_name: []const u8) void {
const lib_prefix = if (lib_exe_obj.target.isWindows()) "" else "lib";
lib_exe_obj.addObjectFile(os.path.join(b.allocator, cmake_binary_dir, "zig_cpp", b.fmt("{}{}{}", lib_prefix, lib_name, lib_exe_obj.target.libFileExt())) catch unreachable);
}
const LibraryDep = struct {
libdirs: ArrayList([]const u8),
libs: ArrayList([]const u8),
system_libs: ArrayList([]const u8),
includes: ArrayList([]const u8),
};
fn findLLVM(b: &Builder, llvm_config_exe: []const u8) !LibraryDep {
const libs_output = try b.exec([][]const u8{
llvm_config_exe,
"--libs",
"--system-libs",
});
const includes_output = try b.exec([][]const u8{
llvm_config_exe,
"--includedir",
});
const libdir_output = try b.exec([][]const u8{
llvm_config_exe,
"--libdir",
});
var result = LibraryDep{
.libs = ArrayList([]const u8).init(b.allocator),
.system_libs = ArrayList([]const u8).init(b.allocator),
.includes = ArrayList([]const u8).init(b.allocator),
.libdirs = ArrayList([]const u8).init(b.allocator),
};
{
var it = mem.split(libs_output, " \r\n");
while (it.next()) |lib_arg| {
if (mem.startsWith(u8, lib_arg, "-l")) {
try result.system_libs.append(lib_arg[2..]);
} else {
if (os.path.isAbsolute(lib_arg)) {
try result.libs.append(lib_arg);
} else {
try result.system_libs.append(lib_arg);
}
}
}
}
{
var it = mem.split(includes_output, " \r\n");
while (it.next()) |include_arg| {
if (mem.startsWith(u8, include_arg, "-I")) {
try result.includes.append(include_arg[2..]);
} else {
try result.includes.append(include_arg);
}
}
}
{
var it = mem.split(libdir_output, " \r\n");
while (it.next()) |libdir| {
if (mem.startsWith(u8, libdir, "-L")) {
try result.libdirs.append(libdir[2..]);
} else {
try result.libdirs.append(libdir);
}
}
}
return result;
}
pub fn installStdLib(b: &Builder, stdlib_files: []const u8) void {
var it = mem.split(stdlib_files, ";");
while (it.next()) |stdlib_file| {
const src_path = os.path.join(b.allocator, "std", stdlib_file) catch unreachable;
const dest_path = os.path.join(b.allocator, "lib", "zig", "std", stdlib_file) catch unreachable;
b.installFile(src_path, dest_path);
}
}
pub fn installCHeaders(b: &Builder, c_header_files: []const u8) void {
var it = mem.split(c_header_files, ";");
while (it.next()) |c_header_file| {
const src_path = os.path.join(b.allocator, "c_headers", c_header_file) catch unreachable;
const dest_path = os.path.join(b.allocator, "lib", "zig", "include", c_header_file) catch unreachable;
b.installFile(src_path, dest_path);
}
}
fn nextValue(index: &usize, build_info: []const u8) []const u8 {
const start = index.*;
while (true) : (index.* += 1) {
switch (build_info[index.*]) {
'\n' => {
const result = build_info[start..index.*];
index.* += 1;
return result;
},
'\r' => {
const result = build_info[start..index.*];
index.* += 2;
return result;
},
else => continue,
}
}
}