diff --git a/std/build.zig b/std/build.zig index 99de9b519..24fa85383 100644 --- a/std/build.zig +++ b/std/build.zig @@ -814,6 +814,7 @@ pub const LibExeObjStep = struct { out_h_filename: []const u8, assembly_files: ArrayList([]const u8), packages: ArrayList(Pkg), + build_options_contents: std.Buffer, // C only stuff source_files: ArrayList([]const u8), @@ -905,6 +906,7 @@ pub const LibExeObjStep = struct { .lib_paths = ArrayList([]const u8).init(builder.allocator), .object_src = undefined, .disable_libc = true, + .build_options_contents = std.Buffer.initSize(builder.allocator, 0) catch unreachable, }; self.computeOutFileNames(); return self; @@ -945,6 +947,7 @@ pub const LibExeObjStep = struct { .out_h_filename = undefined, .assembly_files = undefined, .packages = undefined, + .build_options_contents = undefined, }; self.computeOutFileNames(); return self; @@ -1096,6 +1099,12 @@ pub const LibExeObjStep = struct { self.include_dirs.append(self.builder.cache_root) catch unreachable; } + pub fn addBuildOption(self: *LibExeObjStep, comptime T: type, name: []const u8, value: T) void { + assert(self.is_zig); + const out = &std.io.BufferOutStream.init(&self.build_options_contents).stream; + out.print("pub const {} = {};\n", name, value) catch unreachable; + } + pub fn addIncludeDir(self: *LibExeObjStep, path: []const u8) void { self.include_dirs.append(path) catch unreachable; } @@ -1155,6 +1164,15 @@ pub const LibExeObjStep = struct { zig_args.append(builder.pathFromRoot(root_src)) catch unreachable; } + if (self.build_options_contents.len() > 0) { + const build_options_file = try os.path.join(builder.allocator, builder.cache_root, builder.fmt("{}_build_options.zig", self.name)); + try std.io.writeFile(builder.allocator, build_options_file, self.build_options_contents.toSliceConst()); + try zig_args.append("--pkg-begin"); + try zig_args.append("build_options"); + try zig_args.append(builder.pathFromRoot(build_options_file)); + try zig_args.append("--pkg-end"); + } + for (self.object_files.toSliceConst()) |object_file| { zig_args.append("--object") catch unreachable; zig_args.append(builder.pathFromRoot(object_file)) catch unreachable;