mirror of
https://github.com/ziglang/zig.git
synced 2025-12-21 05:33:15 +00:00
1543 lines
60 KiB
Zig
1543 lines
60 KiB
Zig
const Compilation = @This();
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const std = @import("std");
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const mem = std.mem;
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const Allocator = std.mem.Allocator;
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const Value = @import("value.zig").Value;
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const assert = std.debug.assert;
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const log = std.log.scoped(.compilation);
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const Target = std.Target;
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const target_util = @import("target.zig");
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const Package = @import("Package.zig");
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const link = @import("link.zig");
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const trace = @import("tracy.zig").trace;
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const liveness = @import("liveness.zig");
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const build_options = @import("build_options");
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const LibCInstallation = @import("libc_installation.zig").LibCInstallation;
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const glibc = @import("glibc.zig");
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const fatal = @import("main.zig").fatal;
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const Module = @import("Module.zig");
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/// General-purpose allocator. Used for both temporary and long-term storage.
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gpa: *Allocator,
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/// Arena-allocated memory used during initialization. Should be untouched until deinit.
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arena_state: std.heap.ArenaAllocator.State,
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bin_file: *link.File,
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c_object_table: std.AutoArrayHashMapUnmanaged(*CObject, void) = .{},
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link_error_flags: link.File.ErrorFlags = .{},
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work_queue: std.fifo.LinearFifo(WorkItem, .Dynamic),
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/// The ErrorMsg memory is owned by the `CObject`, using Compilation's general purpose allocator.
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failed_c_objects: std.AutoArrayHashMapUnmanaged(*CObject, *ErrorMsg) = .{},
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keep_source_files_loaded: bool,
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use_clang: bool,
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sanitize_c: bool,
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/// When this is `true` it means invoking clang as a sub-process is expected to inherit
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/// stdin, stdout, stderr, and if it returns non success, to forward the exit code.
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/// Otherwise we attempt to parse the error messages and expose them via the Compilation API.
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/// This is `true` for `zig cc`, `zig c++`, and `zig translate-c`.
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clang_passthrough_mode: bool,
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/// Whether to print clang argvs to stdout.
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debug_cc: bool,
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disable_c_depfile: bool,
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c_source_files: []const CSourceFile,
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clang_argv: []const []const u8,
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cache_parent: *std.cache_hash.Cache,
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/// Path to own executable for invoking `zig clang`.
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self_exe_path: ?[]const u8,
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zig_lib_directory: Directory,
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zig_cache_directory: Directory,
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libc_include_dir_list: []const []const u8,
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rand: *std.rand.Random,
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/// Populated when we build libc++.a. A WorkItem to build this is placed in the queue
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/// and resolved before calling linker.flush().
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libcxx_static_lib: ?[]const u8 = null,
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/// Populated when we build libc++abi.a. A WorkItem to build this is placed in the queue
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/// and resolved before calling linker.flush().
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libcxxabi_static_lib: ?[]const u8 = null,
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/// Populated when we build libunwind.a. A WorkItem to build this is placed in the queue
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/// and resolved before calling linker.flush().
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libunwind_static_lib: ?[]const u8 = null,
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/// Populated when we build c.a. A WorkItem to build this is placed in the queue
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/// and resolved before calling linker.flush().
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libc_static_lib: ?[]const u8 = null,
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/// For example `Scrt1.o` and `libc.so.6`. These are populated after building libc from source,
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/// The set of needed CRT (C runtime) files differs depending on the target and compilation settings.
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/// The key is the basename, and the value is the absolute path to the completed build artifact.
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crt_files: std.StringHashMapUnmanaged([]const u8) = .{},
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/// Keeping track of this possibly open resource so we can close it later.
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owned_link_dir: ?std.fs.Dir,
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pub const InnerError = Module.InnerError;
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/// For passing to a C compiler.
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pub const CSourceFile = struct {
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src_path: []const u8,
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extra_flags: []const []const u8 = &[0][]const u8{},
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};
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const WorkItem = union(enum) {
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/// Write the machine code for a Decl to the output file.
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codegen_decl: *Module.Decl,
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/// The Decl needs to be analyzed and possibly export itself.
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/// It may have already be analyzed, or it may have been determined
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/// to be outdated; in this case perform semantic analysis again.
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analyze_decl: *Module.Decl,
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/// The source file containing the Decl has been updated, and so the
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/// Decl may need its line number information updated in the debug info.
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update_line_number: *Module.Decl,
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/// Invoke the Clang compiler to create an object file, which gets linked
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/// with the Compilation.
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c_object: *CObject,
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/// one of the glibc static objects
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glibc_crt_file: glibc.CRTFile,
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/// one of the glibc shared objects
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glibc_so: *const glibc.Lib,
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};
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pub const CObject = struct {
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/// Relative to cwd. Owned by arena.
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src_path: []const u8,
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/// Owned by arena.
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extra_flags: []const []const u8,
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arena: std.heap.ArenaAllocator.State,
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status: union(enum) {
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new,
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success: struct {
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/// The outputted result. Owned by gpa.
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object_path: []u8,
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/// This is a file system lock on the cache hash manifest representing this
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/// object. It prevents other invocations of the Zig compiler from interfering
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/// with this object until released.
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lock: std.cache_hash.Lock,
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},
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/// There will be a corresponding ErrorMsg in Compilation.failed_c_objects.
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failure,
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},
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/// Returns if there was failure.
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pub fn clearStatus(self: *CObject, gpa: *Allocator) bool {
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switch (self.status) {
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.new => return false,
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.failure => {
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self.status = .new;
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return true;
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},
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.success => |*success| {
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gpa.free(success.object_path);
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success.lock.release();
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self.status = .new;
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return false;
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},
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}
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}
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pub fn destroy(self: *CObject, gpa: *Allocator) void {
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_ = self.clearStatus(gpa);
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self.arena.promote(gpa).deinit();
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}
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};
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pub const AllErrors = struct {
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arena: std.heap.ArenaAllocator.State,
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list: []const Message,
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pub const Message = struct {
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src_path: []const u8,
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line: usize,
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column: usize,
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byte_offset: usize,
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msg: []const u8,
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pub fn renderToStdErr(self: Message) void {
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std.debug.print("{}:{}:{}: error: {}\n", .{
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self.src_path,
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self.line + 1,
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self.column + 1,
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self.msg,
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});
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}
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};
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pub fn deinit(self: *AllErrors, gpa: *Allocator) void {
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self.arena.promote(gpa).deinit();
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}
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fn add(
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arena: *std.heap.ArenaAllocator,
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errors: *std.ArrayList(Message),
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sub_file_path: []const u8,
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source: []const u8,
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simple_err_msg: ErrorMsg,
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) !void {
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const loc = std.zig.findLineColumn(source, simple_err_msg.byte_offset);
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try errors.append(.{
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.src_path = try arena.allocator.dupe(u8, sub_file_path),
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.msg = try arena.allocator.dupe(u8, simple_err_msg.msg),
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.byte_offset = simple_err_msg.byte_offset,
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.line = loc.line,
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.column = loc.column,
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});
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}
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};
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pub const Directory = struct {
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/// This field is redundant for operations that can act on the open directory handle
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/// directly, but it is needed when passing the directory to a child process.
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/// `null` means cwd.
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path: ?[]const u8,
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handle: std.fs.Dir,
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};
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pub const EmitLoc = struct {
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/// If this is `null` it means the file will be output to the cache directory.
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/// When provided, both the open file handle and the path name must outlive the `Compilation`.
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directory: ?Compilation.Directory,
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/// This may not have sub-directories in it.
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basename: []const u8,
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};
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pub const InitOptions = struct {
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zig_lib_directory: Directory,
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zig_cache_directory: Directory,
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target: Target,
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root_name: []const u8,
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root_pkg: ?*Package,
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output_mode: std.builtin.OutputMode,
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rand: *std.rand.Random,
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dynamic_linker: ?[]const u8 = null,
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/// `null` means to not emit a binary file.
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emit_bin: ?EmitLoc,
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/// `null` means to not emit a C header file.
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emit_h: ?EmitLoc = null,
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link_mode: ?std.builtin.LinkMode = null,
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object_format: ?std.builtin.ObjectFormat = null,
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optimize_mode: std.builtin.Mode = .Debug,
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keep_source_files_loaded: bool = false,
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clang_argv: []const []const u8 = &[0][]const u8{},
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lld_argv: []const []const u8 = &[0][]const u8{},
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lib_dirs: []const []const u8 = &[0][]const u8{},
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rpath_list: []const []const u8 = &[0][]const u8{},
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c_source_files: []const CSourceFile = &[0]CSourceFile{},
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link_objects: []const []const u8 = &[0][]const u8{},
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framework_dirs: []const []const u8 = &[0][]const u8{},
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frameworks: []const []const u8 = &[0][]const u8{},
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system_libs: []const []const u8 = &[0][]const u8{},
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link_libc: bool = false,
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link_libcpp: bool = false,
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want_pic: ?bool = null,
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want_sanitize_c: ?bool = null,
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want_stack_check: ?bool = null,
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want_valgrind: ?bool = null,
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use_llvm: ?bool = null,
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use_lld: ?bool = null,
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use_clang: ?bool = null,
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rdynamic: bool = false,
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strip: bool = false,
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single_threaded: bool = false,
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is_native_os: bool,
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link_eh_frame_hdr: bool = false,
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linker_script: ?[]const u8 = null,
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version_script: ?[]const u8 = null,
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override_soname: ?[]const u8 = null,
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linker_gc_sections: ?bool = null,
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function_sections: ?bool = null,
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linker_allow_shlib_undefined: ?bool = null,
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linker_bind_global_refs_locally: ?bool = null,
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disable_c_depfile: bool = false,
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linker_z_nodelete: bool = false,
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linker_z_defs: bool = false,
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clang_passthrough_mode: bool = false,
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debug_cc: bool = false,
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debug_link: bool = false,
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stack_size_override: ?u64 = null,
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self_exe_path: ?[]const u8 = null,
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version: ?std.builtin.Version = null,
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libc_installation: ?*const LibCInstallation = null,
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};
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pub fn create(gpa: *Allocator, options: InitOptions) !*Compilation {
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const comp: *Compilation = comp: {
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// For allocations that have the same lifetime as Compilation. This arena is used only during this
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// initialization and then is freed in deinit().
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var arena_allocator = std.heap.ArenaAllocator.init(gpa);
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errdefer arena_allocator.deinit();
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const arena = &arena_allocator.allocator;
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// We put the `Compilation` itself in the arena. Freeing the arena will free the module.
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// It's initialized later after we prepare the initialization options.
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const comp = try arena.create(Compilation);
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const root_name = try arena.dupe(u8, options.root_name);
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const ofmt = options.object_format orelse options.target.getObjectFormat();
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// Make a decision on whether to use LLD or our own linker.
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const use_lld = if (options.use_lld) |explicit| explicit else blk: {
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if (!build_options.have_llvm)
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break :blk false;
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if (ofmt == .c)
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break :blk false;
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// Our linker can't handle objects or most advanced options yet.
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if (options.link_objects.len != 0 or
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options.c_source_files.len != 0 or
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options.frameworks.len != 0 or
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options.system_libs.len != 0 or
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options.link_libc or options.link_libcpp or
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options.link_eh_frame_hdr or
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options.linker_script != null or options.version_script != null)
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{
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break :blk true;
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}
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break :blk false;
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};
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// Make a decision on whether to use LLVM or our own backend.
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const use_llvm = if (options.use_llvm) |explicit| explicit else blk: {
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// We would want to prefer LLVM for release builds when it is available, however
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// we don't have an LLVM backend yet :)
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// We would also want to prefer LLVM for architectures that we don't have self-hosted support for too.
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break :blk false;
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};
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const must_dynamic_link = dl: {
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if (target_util.cannotDynamicLink(options.target))
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break :dl false;
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if (target_util.osRequiresLibC(options.target))
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break :dl true;
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if (options.link_libc and options.target.isGnuLibC())
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break :dl true;
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if (options.system_libs.len != 0)
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break :dl true;
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break :dl false;
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};
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const default_link_mode: std.builtin.LinkMode = if (must_dynamic_link) .Dynamic else .Static;
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const link_mode: std.builtin.LinkMode = if (options.link_mode) |lm| blk: {
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if (lm == .Static and must_dynamic_link) {
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return error.UnableToStaticLink;
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}
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break :blk lm;
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} else default_link_mode;
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const libc_dirs = try detectLibCIncludeDirs(
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arena,
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options.zig_lib_directory.path.?,
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options.target,
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options.is_native_os,
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options.link_libc,
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options.libc_installation,
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);
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const must_pic: bool = b: {
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if (target_util.requiresPIC(options.target, options.link_libc))
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break :b true;
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break :b link_mode == .Dynamic;
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};
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const pic = options.want_pic orelse must_pic;
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if (options.emit_h != null) fatal("-femit-h not supported yet", .{}); // TODO
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const emit_bin = options.emit_bin orelse fatal("-fno-emit-bin not supported yet", .{}); // TODO
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// Make a decision on whether to use Clang for translate-c and compiling C files.
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const use_clang = if (options.use_clang) |explicit| explicit else blk: {
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if (build_options.have_llvm) {
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// Can't use it if we don't have it!
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break :blk false;
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}
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// It's not planned to do our own translate-c or C compilation.
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break :blk true;
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};
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const is_safe_mode = switch (options.optimize_mode) {
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.Debug, .ReleaseSafe => true,
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.ReleaseFast, .ReleaseSmall => false,
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};
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const sanitize_c = options.want_sanitize_c orelse is_safe_mode;
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const stack_check: bool = b: {
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if (!target_util.supportsStackProbing(options.target))
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break :b false;
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break :b options.want_stack_check orelse is_safe_mode;
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};
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const valgrind: bool = b: {
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if (!target_util.hasValgrindSupport(options.target))
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break :b false;
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break :b options.want_valgrind orelse (options.optimize_mode == .Debug);
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};
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const single_threaded = options.single_threaded or target_util.isSingleThreaded(options.target);
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// We put everything into the cache hash that *cannot be modified during an incremental update*.
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// For example, one cannot change the target between updates, but one can change source files,
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// so the target goes into the cache hash, but source files do not. This is so that we can
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// find the same binary and incrementally update it even if there are modified source files.
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// We do this even if outputting to the current directory because we need somewhere to store
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// incremental compilation metadata.
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const cache = try arena.create(std.cache_hash.Cache);
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cache.* = .{
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.gpa = gpa,
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.manifest_dir = try options.zig_cache_directory.handle.makeOpenPath("h", .{}),
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};
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errdefer cache.manifest_dir.close();
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// This is shared hasher state common to zig source and all C source files.
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cache.hash.addBytes(build_options.version);
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cache.hash.addBytes(options.zig_lib_directory.path orelse ".");
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cache.hash.add(options.optimize_mode);
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cache.hash.add(options.target.cpu.arch);
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cache.hash.addBytes(options.target.cpu.model.name);
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cache.hash.add(options.target.cpu.features.ints);
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cache.hash.add(options.target.os.tag);
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cache.hash.add(options.target.abi);
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cache.hash.add(ofmt);
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cache.hash.add(pic);
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cache.hash.add(stack_check);
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cache.hash.add(link_mode);
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cache.hash.add(options.strip);
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cache.hash.add(options.link_libc);
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cache.hash.add(options.output_mode);
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// TODO audit this and make sure everything is in it
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const module: ?*Module = if (options.root_pkg) |root_pkg| blk: {
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// Options that are specific to zig source files, that cannot be
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// modified between incremental updates.
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var hash = cache.hash;
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hash.add(valgrind);
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hash.add(single_threaded);
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switch (options.target.os.getVersionRange()) {
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.linux => |linux| {
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hash.add(linux.range.min);
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hash.add(linux.range.max);
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hash.add(linux.glibc);
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},
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.windows => |windows| {
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hash.add(windows.min);
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hash.add(windows.max);
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},
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.semver => |semver| {
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hash.add(semver.min);
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hash.add(semver.max);
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},
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.none => {},
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}
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const digest = hash.final();
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const artifact_sub_dir = try std.fs.path.join(arena, &[_][]const u8{ "o", &digest });
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var artifact_dir = try options.zig_cache_directory.handle.makeOpenPath(artifact_sub_dir, .{});
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errdefer artifact_dir.close();
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const zig_cache_artifact_directory: Directory = .{
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.handle = artifact_dir,
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.path = if (options.zig_cache_directory.path) |p|
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try std.fs.path.join(arena, &[_][]const u8{ p, artifact_sub_dir })
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else
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artifact_sub_dir,
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};
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// TODO when we implement serialization and deserialization of incremental compilation metadata,
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// this is where we would load it. We have open a handle to the directory where
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// the output either already is, or will be.
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// However we currently do not have serialization of such metadata, so for now
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// we set up an empty Module that does the entire compilation fresh.
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const root_scope = rs: {
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if (mem.endsWith(u8, root_pkg.root_src_path, ".zig")) {
|
|
const root_scope = try gpa.create(Module.Scope.File);
|
|
root_scope.* = .{
|
|
.sub_file_path = root_pkg.root_src_path,
|
|
.source = .{ .unloaded = {} },
|
|
.contents = .{ .not_available = {} },
|
|
.status = .never_loaded,
|
|
.root_container = .{
|
|
.file_scope = root_scope,
|
|
.decls = .{},
|
|
},
|
|
};
|
|
break :rs &root_scope.base;
|
|
} else if (mem.endsWith(u8, root_pkg.root_src_path, ".zir")) {
|
|
const root_scope = try gpa.create(Module.Scope.ZIRModule);
|
|
root_scope.* = .{
|
|
.sub_file_path = root_pkg.root_src_path,
|
|
.source = .{ .unloaded = {} },
|
|
.contents = .{ .not_available = {} },
|
|
.status = .never_loaded,
|
|
.decls = .{},
|
|
};
|
|
break :rs &root_scope.base;
|
|
} else {
|
|
unreachable;
|
|
}
|
|
};
|
|
|
|
const module = try arena.create(Module);
|
|
module.* = .{
|
|
.gpa = gpa,
|
|
.comp = comp,
|
|
.root_pkg = root_pkg,
|
|
.root_scope = root_scope,
|
|
.zig_cache_artifact_directory = zig_cache_artifact_directory,
|
|
};
|
|
break :blk module;
|
|
} else null;
|
|
errdefer if (module) |zm| zm.deinit();
|
|
|
|
// For resource management purposes.
|
|
var owned_link_dir: ?std.fs.Dir = null;
|
|
errdefer if (owned_link_dir) |*dir| dir.close();
|
|
|
|
const bin_directory = emit_bin.directory orelse blk: {
|
|
if (module) |zm| break :blk zm.zig_cache_artifact_directory;
|
|
|
|
const digest = cache.hash.peek();
|
|
const artifact_sub_dir = try std.fs.path.join(arena, &[_][]const u8{ "o", &digest });
|
|
var artifact_dir = try options.zig_cache_directory.handle.makeOpenPath(artifact_sub_dir, .{});
|
|
owned_link_dir = artifact_dir;
|
|
const link_artifact_directory: Directory = .{
|
|
.handle = artifact_dir,
|
|
.path = if (options.zig_cache_directory.path) |p|
|
|
try std.fs.path.join(arena, &[_][]const u8{ p, artifact_sub_dir })
|
|
else
|
|
artifact_sub_dir,
|
|
};
|
|
break :blk link_artifact_directory;
|
|
};
|
|
|
|
const bin_file = try link.File.openPath(gpa, .{
|
|
.directory = bin_directory,
|
|
.sub_path = emit_bin.basename,
|
|
.root_name = root_name,
|
|
.module = module,
|
|
.target = options.target,
|
|
.dynamic_linker = options.dynamic_linker,
|
|
.output_mode = options.output_mode,
|
|
.link_mode = link_mode,
|
|
.object_format = ofmt,
|
|
.optimize_mode = options.optimize_mode,
|
|
.use_lld = use_lld,
|
|
.use_llvm = use_llvm,
|
|
.link_libc = options.link_libc,
|
|
.link_libcpp = options.link_libcpp,
|
|
.objects = options.link_objects,
|
|
.frameworks = options.frameworks,
|
|
.framework_dirs = options.framework_dirs,
|
|
.system_libs = options.system_libs,
|
|
.lib_dirs = options.lib_dirs,
|
|
.rpath_list = options.rpath_list,
|
|
.strip = options.strip,
|
|
.is_native_os = options.is_native_os,
|
|
.function_sections = options.function_sections orelse false,
|
|
.allow_shlib_undefined = options.linker_allow_shlib_undefined,
|
|
.bind_global_refs_locally = options.linker_bind_global_refs_locally orelse false,
|
|
.z_nodelete = options.linker_z_nodelete,
|
|
.z_defs = options.linker_z_defs,
|
|
.stack_size_override = options.stack_size_override,
|
|
.linker_script = options.linker_script,
|
|
.version_script = options.version_script,
|
|
.gc_sections = options.linker_gc_sections,
|
|
.eh_frame_hdr = options.link_eh_frame_hdr,
|
|
.rdynamic = options.rdynamic,
|
|
.extra_lld_args = options.lld_argv,
|
|
.override_soname = options.override_soname,
|
|
.version = options.version,
|
|
.libc_installation = libc_dirs.libc_installation,
|
|
.pic = pic,
|
|
.valgrind = valgrind,
|
|
.stack_check = stack_check,
|
|
.single_threaded = single_threaded,
|
|
.debug_link = options.debug_link,
|
|
});
|
|
errdefer bin_file.destroy();
|
|
|
|
comp.* = .{
|
|
.gpa = gpa,
|
|
.arena_state = arena_allocator.state,
|
|
.zig_lib_directory = options.zig_lib_directory,
|
|
.zig_cache_directory = options.zig_cache_directory,
|
|
.bin_file = bin_file,
|
|
.work_queue = std.fifo.LinearFifo(WorkItem, .Dynamic).init(gpa),
|
|
.keep_source_files_loaded = options.keep_source_files_loaded,
|
|
.use_clang = use_clang,
|
|
.clang_argv = options.clang_argv,
|
|
.c_source_files = options.c_source_files,
|
|
.cache_parent = cache,
|
|
.self_exe_path = options.self_exe_path,
|
|
.libc_include_dir_list = libc_dirs.libc_include_dir_list,
|
|
.sanitize_c = sanitize_c,
|
|
.rand = options.rand,
|
|
.clang_passthrough_mode = options.clang_passthrough_mode,
|
|
.debug_cc = options.debug_cc,
|
|
.disable_c_depfile = options.disable_c_depfile,
|
|
.owned_link_dir = owned_link_dir,
|
|
};
|
|
break :comp comp;
|
|
};
|
|
errdefer comp.destroy();
|
|
|
|
// Add a `CObject` for each `c_source_files`.
|
|
try comp.c_object_table.ensureCapacity(gpa, options.c_source_files.len);
|
|
for (options.c_source_files) |c_source_file| {
|
|
var local_arena = std.heap.ArenaAllocator.init(gpa);
|
|
errdefer local_arena.deinit();
|
|
|
|
const c_object = try local_arena.allocator.create(CObject);
|
|
|
|
c_object.* = .{
|
|
.status = .{ .new = {} },
|
|
// TODO look into refactoring to turn these 2 fields simply into a CSourceFile
|
|
.src_path = try local_arena.allocator.dupe(u8, c_source_file.src_path),
|
|
.extra_flags = try local_arena.allocator.dupe([]const u8, c_source_file.extra_flags),
|
|
.arena = local_arena.state,
|
|
};
|
|
comp.c_object_table.putAssumeCapacityNoClobber(c_object, {});
|
|
}
|
|
|
|
// If we need to build glibc for the target, add work items for it.
|
|
// We go through the work queue so that building can be done in parallel.
|
|
if (comp.wantBuildGLibCFromSource()) {
|
|
try comp.addBuildingGLibCWorkItems();
|
|
}
|
|
|
|
return comp;
|
|
}
|
|
|
|
pub fn destroy(self: *Compilation) void {
|
|
const optional_module = self.bin_file.options.module;
|
|
self.bin_file.destroy();
|
|
if (optional_module) |module| module.deinit();
|
|
|
|
const gpa = self.gpa;
|
|
self.work_queue.deinit();
|
|
|
|
{
|
|
var it = self.crt_files.iterator();
|
|
while (it.next()) |entry| {
|
|
gpa.free(entry.key);
|
|
gpa.free(entry.value);
|
|
}
|
|
self.crt_files.deinit(gpa);
|
|
}
|
|
|
|
for (self.c_object_table.items()) |entry| {
|
|
entry.key.destroy(gpa);
|
|
}
|
|
self.c_object_table.deinit(gpa);
|
|
|
|
for (self.failed_c_objects.items()) |entry| {
|
|
entry.value.destroy(gpa);
|
|
}
|
|
self.failed_c_objects.deinit(gpa);
|
|
|
|
self.cache_parent.manifest_dir.close();
|
|
if (self.owned_link_dir) |*dir| dir.close();
|
|
|
|
// This destroys `self`.
|
|
self.arena_state.promote(gpa).deinit();
|
|
}
|
|
|
|
pub fn getTarget(self: Compilation) Target {
|
|
return self.bin_file.options.target;
|
|
}
|
|
|
|
/// Detect changes to source files, perform semantic analysis, and update the output files.
|
|
pub fn update(self: *Compilation) !void {
|
|
const tracy = trace(@src());
|
|
defer tracy.end();
|
|
|
|
// For compiling C objects, we rely on the cache hash system to avoid duplicating work.
|
|
// TODO Look into caching this data in memory to improve performance.
|
|
// Add a WorkItem for each C object.
|
|
try self.work_queue.ensureUnusedCapacity(self.c_object_table.items().len);
|
|
for (self.c_object_table.items()) |entry| {
|
|
self.work_queue.writeItemAssumeCapacity(.{ .c_object = entry.key });
|
|
}
|
|
|
|
if (self.bin_file.options.module) |module| {
|
|
module.generation += 1;
|
|
|
|
// TODO Detect which source files changed.
|
|
// Until then we simulate a full cache miss. Source files could have been loaded for any reason;
|
|
// to force a refresh we unload now.
|
|
if (module.root_scope.cast(Module.Scope.File)) |zig_file| {
|
|
zig_file.unload(module.gpa);
|
|
module.analyzeContainer(&zig_file.root_container) catch |err| switch (err) {
|
|
error.AnalysisFail => {
|
|
assert(self.totalErrorCount() != 0);
|
|
},
|
|
else => |e| return e,
|
|
};
|
|
} else if (module.root_scope.cast(Module.Scope.ZIRModule)) |zir_module| {
|
|
zir_module.unload(module.gpa);
|
|
module.analyzeRootZIRModule(zir_module) catch |err| switch (err) {
|
|
error.AnalysisFail => {
|
|
assert(self.totalErrorCount() != 0);
|
|
},
|
|
else => |e| return e,
|
|
};
|
|
}
|
|
}
|
|
|
|
try self.performAllTheWork();
|
|
|
|
if (self.bin_file.options.module) |module| {
|
|
// Process the deletion set.
|
|
while (module.deletion_set.popOrNull()) |decl| {
|
|
if (decl.dependants.items().len != 0) {
|
|
decl.deletion_flag = false;
|
|
continue;
|
|
}
|
|
try module.deleteDecl(decl);
|
|
}
|
|
}
|
|
|
|
if (self.totalErrorCount() != 0) {
|
|
// Skip flushing.
|
|
self.link_error_flags = .{};
|
|
return;
|
|
}
|
|
|
|
// This is needed before reading the error flags.
|
|
try self.bin_file.flush(self);
|
|
|
|
self.link_error_flags = self.bin_file.errorFlags();
|
|
|
|
// If there are any errors, we anticipate the source files being loaded
|
|
// to report error messages. Otherwise we unload all source files to save memory.
|
|
if (self.totalErrorCount() == 0 and !self.keep_source_files_loaded) {
|
|
if (self.bin_file.options.module) |module| {
|
|
module.root_scope.unload(self.gpa);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Having the file open for writing is problematic as far as executing the
|
|
/// binary is concerned. This will remove the write flag, or close the file,
|
|
/// or whatever is needed so that it can be executed.
|
|
/// After this, one must call` makeFileWritable` before calling `update`.
|
|
pub fn makeBinFileExecutable(self: *Compilation) !void {
|
|
return self.bin_file.makeExecutable();
|
|
}
|
|
|
|
pub fn makeBinFileWritable(self: *Compilation) !void {
|
|
return self.bin_file.makeWritable();
|
|
}
|
|
|
|
pub fn totalErrorCount(self: *Compilation) usize {
|
|
var total: usize = self.failed_c_objects.items().len;
|
|
|
|
if (self.bin_file.options.module) |module| {
|
|
total += module.failed_decls.items().len +
|
|
module.failed_exports.items().len +
|
|
module.failed_files.items().len;
|
|
}
|
|
|
|
// The "no entry point found" error only counts if there are no other errors.
|
|
if (total == 0) {
|
|
return @boolToInt(self.link_error_flags.no_entry_point_found);
|
|
}
|
|
|
|
return total;
|
|
}
|
|
|
|
pub fn getAllErrorsAlloc(self: *Compilation) !AllErrors {
|
|
var arena = std.heap.ArenaAllocator.init(self.gpa);
|
|
errdefer arena.deinit();
|
|
|
|
var errors = std.ArrayList(AllErrors.Message).init(self.gpa);
|
|
defer errors.deinit();
|
|
|
|
for (self.failed_c_objects.items()) |entry| {
|
|
const c_object = entry.key;
|
|
const err_msg = entry.value;
|
|
try AllErrors.add(&arena, &errors, c_object.src_path, "", err_msg.*);
|
|
}
|
|
if (self.bin_file.options.module) |module| {
|
|
for (module.failed_files.items()) |entry| {
|
|
const scope = entry.key;
|
|
const err_msg = entry.value;
|
|
const source = try scope.getSource(module);
|
|
try AllErrors.add(&arena, &errors, scope.subFilePath(), source, err_msg.*);
|
|
}
|
|
for (module.failed_decls.items()) |entry| {
|
|
const decl = entry.key;
|
|
const err_msg = entry.value;
|
|
const source = try decl.scope.getSource(module);
|
|
try AllErrors.add(&arena, &errors, decl.scope.subFilePath(), source, err_msg.*);
|
|
}
|
|
for (module.failed_exports.items()) |entry| {
|
|
const decl = entry.key.owner_decl;
|
|
const err_msg = entry.value;
|
|
const source = try decl.scope.getSource(module);
|
|
try AllErrors.add(&arena, &errors, decl.scope.subFilePath(), source, err_msg.*);
|
|
}
|
|
}
|
|
|
|
if (errors.items.len == 0 and self.link_error_flags.no_entry_point_found) {
|
|
const global_err_src_path = blk: {
|
|
if (self.bin_file.options.module) |module| break :blk module.root_pkg.root_src_path;
|
|
if (self.c_source_files.len != 0) break :blk self.c_source_files[0].src_path;
|
|
if (self.bin_file.options.objects.len != 0) break :blk self.bin_file.options.objects[0];
|
|
break :blk "(no file)";
|
|
};
|
|
try errors.append(.{
|
|
.src_path = global_err_src_path,
|
|
.line = 0,
|
|
.column = 0,
|
|
.byte_offset = 0,
|
|
.msg = try std.fmt.allocPrint(&arena.allocator, "no entry point found", .{}),
|
|
});
|
|
}
|
|
|
|
assert(errors.items.len == self.totalErrorCount());
|
|
|
|
return AllErrors{
|
|
.list = try arena.allocator.dupe(AllErrors.Message, errors.items),
|
|
.arena = arena.state,
|
|
};
|
|
}
|
|
|
|
pub fn performAllTheWork(self: *Compilation) error{OutOfMemory}!void {
|
|
while (self.work_queue.readItem()) |work_item| switch (work_item) {
|
|
.codegen_decl => |decl| switch (decl.analysis) {
|
|
.unreferenced => unreachable,
|
|
.in_progress => unreachable,
|
|
.outdated => unreachable,
|
|
|
|
.sema_failure,
|
|
.codegen_failure,
|
|
.dependency_failure,
|
|
.sema_failure_retryable,
|
|
=> continue,
|
|
|
|
.complete, .codegen_failure_retryable => {
|
|
const module = self.bin_file.options.module.?;
|
|
if (decl.typed_value.most_recent.typed_value.val.cast(Value.Payload.Function)) |payload| {
|
|
switch (payload.func.analysis) {
|
|
.queued => module.analyzeFnBody(decl, payload.func) catch |err| switch (err) {
|
|
error.AnalysisFail => {
|
|
assert(payload.func.analysis != .in_progress);
|
|
continue;
|
|
},
|
|
error.OutOfMemory => return error.OutOfMemory,
|
|
},
|
|
.in_progress => unreachable,
|
|
.sema_failure, .dependency_failure => continue,
|
|
.success => {},
|
|
}
|
|
// Here we tack on additional allocations to the Decl's arena. The allocations are
|
|
// lifetime annotations in the ZIR.
|
|
var decl_arena = decl.typed_value.most_recent.arena.?.promote(module.gpa);
|
|
defer decl.typed_value.most_recent.arena.?.* = decl_arena.state;
|
|
log.debug("analyze liveness of {}\n", .{decl.name});
|
|
try liveness.analyze(module.gpa, &decl_arena.allocator, payload.func.analysis.success);
|
|
}
|
|
|
|
assert(decl.typed_value.most_recent.typed_value.ty.hasCodeGenBits());
|
|
|
|
self.bin_file.updateDecl(module, decl) catch |err| switch (err) {
|
|
error.OutOfMemory => return error.OutOfMemory,
|
|
error.AnalysisFail => {
|
|
decl.analysis = .dependency_failure;
|
|
},
|
|
else => {
|
|
try module.failed_decls.ensureCapacity(module.gpa, module.failed_decls.items().len + 1);
|
|
module.failed_decls.putAssumeCapacityNoClobber(decl, try ErrorMsg.create(
|
|
module.gpa,
|
|
decl.src(),
|
|
"unable to codegen: {}",
|
|
.{@errorName(err)},
|
|
));
|
|
decl.analysis = .codegen_failure_retryable;
|
|
},
|
|
};
|
|
},
|
|
},
|
|
.analyze_decl => |decl| {
|
|
const module = self.bin_file.options.module.?;
|
|
module.ensureDeclAnalyzed(decl) catch |err| switch (err) {
|
|
error.OutOfMemory => return error.OutOfMemory,
|
|
error.AnalysisFail => continue,
|
|
};
|
|
},
|
|
.update_line_number => |decl| {
|
|
const module = self.bin_file.options.module.?;
|
|
self.bin_file.updateDeclLineNumber(module, decl) catch |err| {
|
|
try module.failed_decls.ensureCapacity(module.gpa, module.failed_decls.items().len + 1);
|
|
module.failed_decls.putAssumeCapacityNoClobber(decl, try ErrorMsg.create(
|
|
module.gpa,
|
|
decl.src(),
|
|
"unable to update line number: {}",
|
|
.{@errorName(err)},
|
|
));
|
|
decl.analysis = .codegen_failure_retryable;
|
|
};
|
|
},
|
|
.c_object => |c_object| {
|
|
self.updateCObject(c_object) catch |err| switch (err) {
|
|
error.AnalysisFail => continue,
|
|
else => {
|
|
try self.failed_c_objects.ensureCapacity(self.gpa, self.failed_c_objects.items().len + 1);
|
|
self.failed_c_objects.putAssumeCapacityNoClobber(c_object, try ErrorMsg.create(
|
|
self.gpa,
|
|
0,
|
|
"unable to build C object: {}",
|
|
.{@errorName(err)},
|
|
));
|
|
c_object.status = .{ .failure = {} };
|
|
},
|
|
};
|
|
},
|
|
.glibc_crt_file => |crt_file| {
|
|
glibc.buildCRTFile(self, crt_file) catch |err| {
|
|
// This is a problem with the Zig installation. It's mostly OK to crash here,
|
|
// but TODO because it would be even better if we could recover gracefully
|
|
// from temporary problems such as out-of-disk-space.
|
|
fatal("unable to build glibc CRT file: {}", .{@errorName(err)});
|
|
};
|
|
},
|
|
.glibc_so => |glibc_lib| {
|
|
fatal("TODO build glibc shared object '{}.so.{}'", .{ glibc_lib.name, glibc_lib.sover });
|
|
},
|
|
};
|
|
}
|
|
|
|
fn updateCObject(comp: *Compilation, c_object: *CObject) !void {
|
|
const tracy = trace(@src());
|
|
defer tracy.end();
|
|
|
|
if (!build_options.have_llvm) {
|
|
return comp.failCObj(c_object, "clang not available: compiler not built with LLVM extensions enabled", .{});
|
|
}
|
|
const self_exe_path = comp.self_exe_path orelse
|
|
return comp.failCObj(c_object, "clang compilation disabled", .{});
|
|
|
|
if (c_object.clearStatus(comp.gpa)) {
|
|
// There was previous failure.
|
|
comp.failed_c_objects.removeAssertDiscard(c_object);
|
|
}
|
|
|
|
var ch = comp.cache_parent.obtain();
|
|
defer ch.deinit();
|
|
|
|
ch.hash.add(comp.sanitize_c);
|
|
ch.hash.addListOfBytes(comp.clang_argv);
|
|
ch.hash.add(comp.bin_file.options.link_libcpp);
|
|
ch.hash.addListOfBytes(comp.libc_include_dir_list);
|
|
// TODO
|
|
//cache_int(cache_hash, g->code_model);
|
|
//cache_bool(cache_hash, codegen_have_frame_pointer(g));
|
|
_ = try ch.addFile(c_object.src_path, null);
|
|
{
|
|
// Hash the extra flags, with special care to call addFile for file parameters.
|
|
// TODO this logic can likely be improved by utilizing clang_options_data.zig.
|
|
const file_args = [_][]const u8{"-include"};
|
|
var arg_i: usize = 0;
|
|
while (arg_i < c_object.extra_flags.len) : (arg_i += 1) {
|
|
const arg = c_object.extra_flags[arg_i];
|
|
ch.hash.addBytes(arg);
|
|
for (file_args) |file_arg| {
|
|
if (mem.eql(u8, file_arg, arg) and arg_i + 1 < c_object.extra_flags.len) {
|
|
arg_i += 1;
|
|
_ = try ch.addFile(c_object.extra_flags[arg_i], null);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var arena_allocator = std.heap.ArenaAllocator.init(comp.gpa);
|
|
defer arena_allocator.deinit();
|
|
const arena = &arena_allocator.allocator;
|
|
|
|
const c_source_basename = std.fs.path.basename(c_object.src_path);
|
|
// Special case when doing build-obj for just one C file. When there are more than one object
|
|
// file and building an object we need to link them together, but with just one it should go
|
|
// directly to the output file.
|
|
const direct_o = comp.c_source_files.len == 1 and comp.bin_file.options.module == null and
|
|
comp.bin_file.options.output_mode == .Obj and comp.bin_file.options.objects.len == 0;
|
|
const o_basename_noext = if (direct_o)
|
|
comp.bin_file.options.root_name
|
|
else
|
|
mem.split(c_source_basename, ".").next().?;
|
|
const o_basename = try std.fmt.allocPrint(arena, "{}{}", .{ o_basename_noext, comp.getTarget().oFileExt() });
|
|
|
|
const digest = if ((try ch.hit()) and !comp.disable_c_depfile) ch.final() else blk: {
|
|
var argv = std.ArrayList([]const u8).init(comp.gpa);
|
|
defer argv.deinit();
|
|
|
|
// We can't know the digest until we do the C compiler invocation, so we need a temporary filename.
|
|
const out_obj_path = try comp.tmpFilePath(arena, o_basename);
|
|
var zig_cache_tmp_dir = try comp.zig_cache_directory.handle.makeOpenPath("tmp", .{});
|
|
defer zig_cache_tmp_dir.close();
|
|
|
|
try argv.appendSlice(&[_][]const u8{ self_exe_path, "clang", "-c" });
|
|
|
|
const ext = classifyFileExt(c_object.src_path);
|
|
// TODO capture the .d file and deal with caching stuff
|
|
try comp.addCCArgs(arena, &argv, ext, false, null);
|
|
|
|
try argv.append("-o");
|
|
try argv.append(out_obj_path);
|
|
|
|
try argv.append(c_object.src_path);
|
|
try argv.appendSlice(c_object.extra_flags);
|
|
|
|
if (comp.debug_cc) {
|
|
for (argv.items[0 .. argv.items.len - 1]) |arg| {
|
|
std.debug.print("{} ", .{arg});
|
|
}
|
|
std.debug.print("{}\n", .{argv.items[argv.items.len - 1]});
|
|
}
|
|
|
|
const child = try std.ChildProcess.init(argv.items, arena);
|
|
defer child.deinit();
|
|
|
|
if (comp.clang_passthrough_mode) {
|
|
child.stdin_behavior = .Inherit;
|
|
child.stdout_behavior = .Inherit;
|
|
child.stderr_behavior = .Inherit;
|
|
|
|
const term = child.spawnAndWait() catch |err| {
|
|
return comp.failCObj(c_object, "unable to spawn {}: {}", .{ argv.items[0], @errorName(err) });
|
|
};
|
|
switch (term) {
|
|
.Exited => |code| {
|
|
if (code != 0) {
|
|
// TODO make std.process.exit and std.ChildProcess exit code have the same type
|
|
// and forward it here. Currently it is u32 vs u8.
|
|
std.process.exit(1);
|
|
}
|
|
},
|
|
else => std.process.exit(1),
|
|
}
|
|
} else {
|
|
child.stdin_behavior = .Ignore;
|
|
child.stdout_behavior = .Pipe;
|
|
child.stderr_behavior = .Pipe;
|
|
|
|
try child.spawn();
|
|
|
|
const stdout_reader = child.stdout.?.reader();
|
|
const stderr_reader = child.stderr.?.reader();
|
|
|
|
// TODO Need to poll to read these streams to prevent a deadlock (or rely on evented I/O).
|
|
const stdout = try stdout_reader.readAllAlloc(arena, std.math.maxInt(u32));
|
|
const stderr = try stderr_reader.readAllAlloc(arena, 10 * 1024 * 1024);
|
|
|
|
const term = child.wait() catch |err| {
|
|
return comp.failCObj(c_object, "unable to spawn {}: {}", .{ argv.items[0], @errorName(err) });
|
|
};
|
|
|
|
switch (term) {
|
|
.Exited => |code| {
|
|
if (code != 0) {
|
|
// TODO parse clang stderr and turn it into an error message
|
|
// and then call failCObjWithOwnedErrorMsg
|
|
std.log.err("clang failed with stderr: {}", .{stderr});
|
|
return comp.failCObj(c_object, "clang exited with code {}", .{code});
|
|
}
|
|
},
|
|
else => {
|
|
std.log.err("clang terminated with stderr: {}", .{stderr});
|
|
return comp.failCObj(c_object, "clang terminated unexpectedly", .{});
|
|
},
|
|
}
|
|
}
|
|
|
|
// TODO handle .d files
|
|
|
|
// Rename into place.
|
|
const digest = ch.final();
|
|
const o_sub_path = try std.fs.path.join(arena, &[_][]const u8{ "o", &digest });
|
|
var o_dir = try comp.zig_cache_directory.handle.makeOpenPath(o_sub_path, .{});
|
|
defer o_dir.close();
|
|
// TODO Add renameat capabilities to the std lib in a higher layer than the posix layer.
|
|
const tmp_basename = std.fs.path.basename(out_obj_path);
|
|
try std.os.renameat(zig_cache_tmp_dir.fd, tmp_basename, o_dir.fd, o_basename);
|
|
|
|
ch.writeManifest() catch |err| {
|
|
std.log.warn("failed to write cache manifest when compiling '{}': {}", .{ c_object.src_path, @errorName(err) });
|
|
};
|
|
break :blk digest;
|
|
};
|
|
|
|
const full_object_path = if (comp.zig_cache_directory.path) |p|
|
|
try std.fs.path.join(comp.gpa, &[_][]const u8{ p, "o", &digest, o_basename })
|
|
else
|
|
try std.fs.path.join(comp.gpa, &[_][]const u8{ "o", &digest, o_basename });
|
|
c_object.status = .{
|
|
.success = .{
|
|
.object_path = full_object_path,
|
|
.lock = ch.toOwnedLock(),
|
|
},
|
|
};
|
|
}
|
|
|
|
fn tmpFilePath(comp: *Compilation, arena: *Allocator, suffix: []const u8) error{OutOfMemory}![]const u8 {
|
|
const s = std.fs.path.sep_str;
|
|
return std.fmt.allocPrint(
|
|
arena,
|
|
"{}" ++ s ++ "tmp" ++ s ++ "{x}-{}",
|
|
.{ comp.zig_cache_directory.path.?, comp.rand.int(u64), suffix },
|
|
);
|
|
}
|
|
|
|
/// Add common C compiler args between translate-c and C object compilation.
|
|
fn addCCArgs(
|
|
comp: *Compilation,
|
|
arena: *Allocator,
|
|
argv: *std.ArrayList([]const u8),
|
|
ext: FileExt,
|
|
translate_c: bool,
|
|
out_dep_path: ?[]const u8,
|
|
) !void {
|
|
const target = comp.getTarget();
|
|
|
|
if (translate_c) {
|
|
try argv.appendSlice(&[_][]const u8{ "-x", "c" });
|
|
}
|
|
|
|
if (ext == .cpp) {
|
|
try argv.append("-nostdinc++");
|
|
}
|
|
try argv.appendSlice(&[_][]const u8{
|
|
"-nostdinc",
|
|
"-fno-spell-checking",
|
|
});
|
|
|
|
// We don't ever put `-fcolor-diagnostics` or `-fno-color-diagnostics` because in passthrough mode
|
|
// we want Clang to infer it, and in normal mode we always want it off, which will be true since
|
|
// clang will detect stderr as a pipe rather than a terminal.
|
|
if (!comp.clang_passthrough_mode) {
|
|
// Make stderr more easily parseable.
|
|
try argv.append("-fno-caret-diagnostics");
|
|
}
|
|
|
|
if (comp.bin_file.options.function_sections) {
|
|
try argv.append("-ffunction-sections");
|
|
}
|
|
|
|
try argv.ensureCapacity(argv.items.len + comp.bin_file.options.framework_dirs.len * 2);
|
|
for (comp.bin_file.options.framework_dirs) |framework_dir| {
|
|
argv.appendAssumeCapacity("-iframework");
|
|
argv.appendAssumeCapacity(framework_dir);
|
|
}
|
|
|
|
if (comp.bin_file.options.link_libcpp) {
|
|
const libcxx_include_path = try std.fs.path.join(arena, &[_][]const u8{
|
|
comp.zig_lib_directory.path.?, "libcxx", "include",
|
|
});
|
|
const libcxxabi_include_path = try std.fs.path.join(arena, &[_][]const u8{
|
|
comp.zig_lib_directory.path.?, "libcxxabi", "include",
|
|
});
|
|
|
|
try argv.append("-isystem");
|
|
try argv.append(libcxx_include_path);
|
|
|
|
try argv.append("-isystem");
|
|
try argv.append(libcxxabi_include_path);
|
|
|
|
if (target.abi.isMusl()) {
|
|
try argv.append("-D_LIBCPP_HAS_MUSL_LIBC");
|
|
}
|
|
try argv.append("-D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS");
|
|
try argv.append("-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS");
|
|
}
|
|
|
|
const llvm_triple = try @import("codegen/llvm.zig").targetTriple(arena, target);
|
|
try argv.appendSlice(&[_][]const u8{ "-target", llvm_triple });
|
|
|
|
switch (ext) {
|
|
.c, .cpp, .h => {
|
|
// According to Rich Felker libc headers are supposed to go before C language headers.
|
|
// However as noted by @dimenus, appending libc headers before c_headers breaks intrinsics
|
|
// and other compiler specific items.
|
|
const c_headers_dir = try std.fs.path.join(arena, &[_][]const u8{ comp.zig_lib_directory.path.?, "include" });
|
|
try argv.append("-isystem");
|
|
try argv.append(c_headers_dir);
|
|
|
|
for (comp.libc_include_dir_list) |include_dir| {
|
|
try argv.append("-isystem");
|
|
try argv.append(include_dir);
|
|
}
|
|
|
|
if (target.cpu.model.llvm_name) |llvm_name| {
|
|
try argv.appendSlice(&[_][]const u8{
|
|
"-Xclang", "-target-cpu", "-Xclang", llvm_name,
|
|
});
|
|
}
|
|
// TODO CLI args for target features
|
|
//if (g->zig_target->llvm_cpu_features != nullptr) {
|
|
// // https://github.com/ziglang/zig/issues/5017
|
|
// SplitIterator it = memSplit(str(g->zig_target->llvm_cpu_features), str(","));
|
|
// Optional<Slice<uint8_t>> flag = SplitIterator_next(&it);
|
|
// while (flag.is_some) {
|
|
// try argv.append("-Xclang");
|
|
// try argv.append("-target-feature");
|
|
// try argv.append("-Xclang");
|
|
// try argv.append(buf_ptr(buf_create_from_slice(flag.value)));
|
|
// flag = SplitIterator_next(&it);
|
|
// }
|
|
//}
|
|
if (translate_c) {
|
|
// This gives us access to preprocessing entities, presumably at the cost of performance.
|
|
try argv.append("-Xclang");
|
|
try argv.append("-detailed-preprocessing-record");
|
|
}
|
|
if (out_dep_path) |p| {
|
|
try argv.append("-MD");
|
|
try argv.append("-MV");
|
|
try argv.append("-MF");
|
|
try argv.append(p);
|
|
}
|
|
},
|
|
.so, .assembly, .ll, .bc, .unknown => {},
|
|
}
|
|
// TODO CLI args for cpu features when compiling assembly
|
|
//for (size_t i = 0; i < g->zig_target->llvm_cpu_features_asm_len; i += 1) {
|
|
// try argv.append(g->zig_target->llvm_cpu_features_asm_ptr[i]);
|
|
//}
|
|
|
|
if (target.os.tag == .freestanding) {
|
|
try argv.append("-ffreestanding");
|
|
}
|
|
|
|
// windows.h has files such as pshpack1.h which do #pragma packing, triggering a clang warning.
|
|
// So for this target, we disable this warning.
|
|
if (target.os.tag == .windows and target.abi.isGnu()) {
|
|
try argv.append("-Wno-pragma-pack");
|
|
}
|
|
|
|
if (!comp.bin_file.options.strip) {
|
|
try argv.append("-g");
|
|
}
|
|
|
|
if (comp.haveFramePointer()) {
|
|
try argv.append("-fno-omit-frame-pointer");
|
|
} else {
|
|
try argv.append("-fomit-frame-pointer");
|
|
}
|
|
|
|
if (comp.sanitize_c) {
|
|
try argv.append("-fsanitize=undefined");
|
|
try argv.append("-fsanitize-trap=undefined");
|
|
}
|
|
|
|
switch (comp.bin_file.options.optimize_mode) {
|
|
.Debug => {
|
|
// windows c runtime requires -D_DEBUG if using debug libraries
|
|
try argv.append("-D_DEBUG");
|
|
try argv.append("-Og");
|
|
|
|
if (comp.bin_file.options.link_libc) {
|
|
try argv.append("-fstack-protector-strong");
|
|
try argv.append("--param");
|
|
try argv.append("ssp-buffer-size=4");
|
|
} else {
|
|
try argv.append("-fno-stack-protector");
|
|
}
|
|
},
|
|
.ReleaseSafe => {
|
|
// See the comment in the BuildModeFastRelease case for why we pass -O2 rather
|
|
// than -O3 here.
|
|
try argv.append("-O2");
|
|
if (comp.bin_file.options.link_libc) {
|
|
try argv.append("-D_FORTIFY_SOURCE=2");
|
|
try argv.append("-fstack-protector-strong");
|
|
try argv.append("--param");
|
|
try argv.append("ssp-buffer-size=4");
|
|
} else {
|
|
try argv.append("-fno-stack-protector");
|
|
}
|
|
},
|
|
.ReleaseFast => {
|
|
try argv.append("-DNDEBUG");
|
|
// Here we pass -O2 rather than -O3 because, although we do the equivalent of
|
|
// -O3 in Zig code, the justification for the difference here is that Zig
|
|
// has better detection and prevention of undefined behavior, so -O3 is safer for
|
|
// Zig code than it is for C code. Also, C programmers are used to their code
|
|
// running in -O2 and thus the -O3 path has been tested less.
|
|
try argv.append("-O2");
|
|
try argv.append("-fno-stack-protector");
|
|
},
|
|
.ReleaseSmall => {
|
|
try argv.append("-DNDEBUG");
|
|
try argv.append("-Os");
|
|
try argv.append("-fno-stack-protector");
|
|
},
|
|
}
|
|
|
|
if (target_util.supports_fpic(target) and comp.bin_file.options.pic) {
|
|
try argv.append("-fPIC");
|
|
}
|
|
|
|
try argv.appendSlice(comp.clang_argv);
|
|
}
|
|
|
|
fn failCObj(comp: *Compilation, c_object: *CObject, comptime format: []const u8, args: anytype) InnerError {
|
|
@setCold(true);
|
|
const err_msg = try ErrorMsg.create(comp.gpa, 0, "unable to build C object: " ++ format, args);
|
|
return comp.failCObjWithOwnedErrorMsg(c_object, err_msg);
|
|
}
|
|
|
|
fn failCObjWithOwnedErrorMsg(comp: *Compilation, c_object: *CObject, err_msg: *ErrorMsg) InnerError {
|
|
{
|
|
errdefer err_msg.destroy(comp.gpa);
|
|
try comp.failed_c_objects.ensureCapacity(comp.gpa, comp.failed_c_objects.items().len + 1);
|
|
}
|
|
comp.failed_c_objects.putAssumeCapacityNoClobber(c_object, err_msg);
|
|
c_object.status = .failure;
|
|
return error.AnalysisFail;
|
|
}
|
|
|
|
pub const ErrorMsg = struct {
|
|
byte_offset: usize,
|
|
msg: []const u8,
|
|
|
|
pub fn create(gpa: *Allocator, byte_offset: usize, comptime format: []const u8, args: anytype) !*ErrorMsg {
|
|
const self = try gpa.create(ErrorMsg);
|
|
errdefer gpa.destroy(self);
|
|
self.* = try init(gpa, byte_offset, format, args);
|
|
return self;
|
|
}
|
|
|
|
/// Assumes the ErrorMsg struct and msg were both allocated with allocator.
|
|
pub fn destroy(self: *ErrorMsg, gpa: *Allocator) void {
|
|
self.deinit(gpa);
|
|
gpa.destroy(self);
|
|
}
|
|
|
|
pub fn init(gpa: *Allocator, byte_offset: usize, comptime format: []const u8, args: anytype) !ErrorMsg {
|
|
return ErrorMsg{
|
|
.byte_offset = byte_offset,
|
|
.msg = try std.fmt.allocPrint(gpa, format, args),
|
|
};
|
|
}
|
|
|
|
pub fn deinit(self: *ErrorMsg, gpa: *Allocator) void {
|
|
gpa.free(self.msg);
|
|
self.* = undefined;
|
|
}
|
|
};
|
|
|
|
pub const FileExt = enum {
|
|
c,
|
|
cpp,
|
|
h,
|
|
ll,
|
|
bc,
|
|
assembly,
|
|
so,
|
|
unknown,
|
|
};
|
|
|
|
pub fn hasCExt(filename: []const u8) bool {
|
|
return mem.endsWith(u8, filename, ".c");
|
|
}
|
|
|
|
pub fn hasCppExt(filename: []const u8) bool {
|
|
return mem.endsWith(u8, filename, ".C") or
|
|
mem.endsWith(u8, filename, ".cc") or
|
|
mem.endsWith(u8, filename, ".cpp") or
|
|
mem.endsWith(u8, filename, ".cxx");
|
|
}
|
|
|
|
pub fn hasAsmExt(filename: []const u8) bool {
|
|
return mem.endsWith(u8, filename, ".s") or mem.endsWith(u8, filename, ".S");
|
|
}
|
|
|
|
pub fn classifyFileExt(filename: []const u8) FileExt {
|
|
if (hasCExt(filename)) {
|
|
return .c;
|
|
} else if (hasCppExt(filename)) {
|
|
return .cpp;
|
|
} else if (mem.endsWith(u8, filename, ".ll")) {
|
|
return .ll;
|
|
} else if (mem.endsWith(u8, filename, ".bc")) {
|
|
return .bc;
|
|
} else if (hasAsmExt(filename)) {
|
|
return .assembly;
|
|
} else if (mem.endsWith(u8, filename, ".h")) {
|
|
return .h;
|
|
} else if (mem.endsWith(u8, filename, ".so")) {
|
|
return .so;
|
|
}
|
|
// Look for .so.X, .so.X.Y, .so.X.Y.Z
|
|
var it = mem.split(filename, ".");
|
|
_ = it.next().?;
|
|
var so_txt = it.next() orelse return .unknown;
|
|
while (!mem.eql(u8, so_txt, "so")) {
|
|
so_txt = it.next() orelse return .unknown;
|
|
}
|
|
const n1 = it.next() orelse return .unknown;
|
|
const n2 = it.next();
|
|
const n3 = it.next();
|
|
|
|
_ = std.fmt.parseInt(u32, n1, 10) catch return .unknown;
|
|
if (n2) |x| _ = std.fmt.parseInt(u32, x, 10) catch return .unknown;
|
|
if (n3) |x| _ = std.fmt.parseInt(u32, x, 10) catch return .unknown;
|
|
if (it.next() != null) return .unknown;
|
|
|
|
return .so;
|
|
}
|
|
|
|
test "classifyFileExt" {
|
|
std.testing.expectEqual(FileExt.cpp, classifyFileExt("foo.cc"));
|
|
std.testing.expectEqual(FileExt.unknown, classifyFileExt("foo.nim"));
|
|
std.testing.expectEqual(FileExt.so, classifyFileExt("foo.so"));
|
|
std.testing.expectEqual(FileExt.so, classifyFileExt("foo.so.1"));
|
|
std.testing.expectEqual(FileExt.so, classifyFileExt("foo.so.1.2"));
|
|
std.testing.expectEqual(FileExt.so, classifyFileExt("foo.so.1.2.3"));
|
|
std.testing.expectEqual(FileExt.unknown, classifyFileExt("foo.so.1.2.3~"));
|
|
}
|
|
|
|
fn haveFramePointer(comp: *Compilation) bool {
|
|
return switch (comp.bin_file.options.optimize_mode) {
|
|
.Debug, .ReleaseSafe => !comp.bin_file.options.strip,
|
|
.ReleaseSmall, .ReleaseFast => false,
|
|
};
|
|
}
|
|
|
|
const LibCDirs = struct {
|
|
libc_include_dir_list: []const []const u8,
|
|
libc_installation: ?*const LibCInstallation,
|
|
};
|
|
|
|
fn detectLibCIncludeDirs(
|
|
arena: *Allocator,
|
|
zig_lib_dir: []const u8,
|
|
target: Target,
|
|
is_native_os: bool,
|
|
link_libc: bool,
|
|
libc_installation: ?*const LibCInstallation,
|
|
) !LibCDirs {
|
|
if (!link_libc) {
|
|
return LibCDirs{
|
|
.libc_include_dir_list = &[0][]u8{},
|
|
.libc_installation = null,
|
|
};
|
|
}
|
|
|
|
if (libc_installation) |lci| {
|
|
return detectLibCFromLibCInstallation(arena, target, lci);
|
|
}
|
|
|
|
if (target_util.canBuildLibC(target)) {
|
|
const generic_name = target_util.libCGenericName(target);
|
|
// Some architectures are handled by the same set of headers.
|
|
const arch_name = if (target.abi.isMusl()) target_util.archMuslName(target.cpu.arch) else @tagName(target.cpu.arch);
|
|
const os_name = @tagName(target.os.tag);
|
|
// Musl's headers are ABI-agnostic and so they all have the "musl" ABI name.
|
|
const abi_name = if (target.abi.isMusl()) "musl" else @tagName(target.abi);
|
|
const s = std.fs.path.sep_str;
|
|
const arch_include_dir = try std.fmt.allocPrint(
|
|
arena,
|
|
"{}" ++ s ++ "libc" ++ s ++ "include" ++ s ++ "{}-{}-{}",
|
|
.{ zig_lib_dir, arch_name, os_name, abi_name },
|
|
);
|
|
const generic_include_dir = try std.fmt.allocPrint(
|
|
arena,
|
|
"{}" ++ s ++ "libc" ++ s ++ "include" ++ s ++ "generic-{}",
|
|
.{ zig_lib_dir, generic_name },
|
|
);
|
|
const arch_os_include_dir = try std.fmt.allocPrint(
|
|
arena,
|
|
"{}" ++ s ++ "libc" ++ s ++ "include" ++ s ++ "{}-{}-any",
|
|
.{ zig_lib_dir, @tagName(target.cpu.arch), os_name },
|
|
);
|
|
const generic_os_include_dir = try std.fmt.allocPrint(
|
|
arena,
|
|
"{}" ++ s ++ "libc" ++ s ++ "include" ++ s ++ "any-{}-any",
|
|
.{ zig_lib_dir, os_name },
|
|
);
|
|
|
|
const list = try arena.alloc([]const u8, 4);
|
|
list[0] = arch_include_dir;
|
|
list[1] = generic_include_dir;
|
|
list[2] = arch_os_include_dir;
|
|
list[3] = generic_os_include_dir;
|
|
return LibCDirs{
|
|
.libc_include_dir_list = list,
|
|
.libc_installation = null,
|
|
};
|
|
}
|
|
|
|
if (is_native_os) {
|
|
const libc = try arena.create(LibCInstallation);
|
|
libc.* = try LibCInstallation.findNative(.{ .allocator = arena });
|
|
return detectLibCFromLibCInstallation(arena, target, libc);
|
|
}
|
|
|
|
return LibCDirs{
|
|
.libc_include_dir_list = &[0][]u8{},
|
|
.libc_installation = null,
|
|
};
|
|
}
|
|
|
|
fn detectLibCFromLibCInstallation(arena: *Allocator, target: Target, lci: *const LibCInstallation) !LibCDirs {
|
|
var list = std.ArrayList([]const u8).init(arena);
|
|
try list.ensureCapacity(4);
|
|
|
|
list.appendAssumeCapacity(lci.include_dir.?);
|
|
|
|
const is_redundant = mem.eql(u8, lci.sys_include_dir.?, lci.include_dir.?);
|
|
if (!is_redundant) list.appendAssumeCapacity(lci.sys_include_dir.?);
|
|
|
|
if (target.os.tag == .windows) {
|
|
if (std.fs.path.dirname(lci.include_dir.?)) |include_dir_parent| {
|
|
const um_dir = try std.fs.path.join(arena, &[_][]const u8{ include_dir_parent, "um" });
|
|
list.appendAssumeCapacity(um_dir);
|
|
|
|
const shared_dir = try std.fs.path.join(arena, &[_][]const u8{ include_dir_parent, "shared" });
|
|
list.appendAssumeCapacity(shared_dir);
|
|
}
|
|
}
|
|
return LibCDirs{
|
|
.libc_include_dir_list = list.items,
|
|
.libc_installation = lci,
|
|
};
|
|
}
|
|
|
|
pub fn get_libc_crt_file(comp: *Compilation, arena: *Allocator, basename: []const u8) ![]const u8 {
|
|
if (comp.wantBuildGLibCFromSource()) {
|
|
return comp.crt_files.get(basename).?;
|
|
}
|
|
const lci = comp.bin_file.options.libc_installation orelse return error.LibCInstallationNotAvailable;
|
|
const crt_dir_path = lci.crt_dir orelse return error.LibCInstallationMissingCRTDir;
|
|
const full_path = try std.fs.path.join(arena, &[_][]const u8{ crt_dir_path, basename });
|
|
return full_path;
|
|
}
|
|
|
|
fn addBuildingGLibCWorkItems(comp: *Compilation) !void {
|
|
const static_file_work_items = [_]WorkItem{
|
|
.{ .glibc_crt_file = .crti_o },
|
|
.{ .glibc_crt_file = .crtn_o },
|
|
.{ .glibc_crt_file = .start_os },
|
|
.{ .glibc_crt_file = .abi_note_o },
|
|
.{ .glibc_crt_file = .scrt1_o },
|
|
.{ .glibc_crt_file = .libc_nonshared_a },
|
|
};
|
|
try comp.work_queue.ensureUnusedCapacity(static_file_work_items.len + glibc.libs.len);
|
|
comp.work_queue.writeAssumeCapacity(&static_file_work_items);
|
|
for (glibc.libs) |*glibc_so| {
|
|
comp.work_queue.writeItemAssumeCapacity(.{ .glibc_so = glibc_so });
|
|
}
|
|
}
|
|
|
|
fn wantBuildGLibCFromSource(comp: *Compilation) bool {
|
|
return comp.bin_file.options.link_libc and
|
|
comp.bin_file.options.libc_installation == null and
|
|
comp.bin_file.options.target.isGnuLibC();
|
|
}
|