zig/src-self-hosted/main.zig
2017-11-24 14:56:05 -05:00

288 lines
14 KiB
Zig

const builtin = @import("builtin");
const io = @import("std").io;
const os = @import("std").os;
const heap = @import("std").heap;
// TODO: sync up CLI with c++ code
// TODO: concurrency
error InvalidArgument;
error MissingArg0;
var arg0: []u8 = undefined;
var stderr_file: io.File = undefined;
const stderr = &stderr_file.out_stream;
pub fn main() -> %void {
stderr_file = %return io.getStdErr();
if (internal_main()) |_| {
return;
} else |err| {
if (err == error.InvalidArgument) {
stderr.print("\n") %% return err;
printUsage(stderr) %% return err;
} else {
stderr.print("{}\n", err) %% return err;
}
return err;
}
}
pub fn internal_main() -> %void {
var args_it = os.args();
var incrementing_allocator = heap.IncrementingAllocator.init(10 * 1024 * 1024) %% |err| {
io.stderr.printf("Unable to allocate memory") %% {};
return err;
};
defer incrementing_allocator.deinit();
const allocator = &incrementing_allocator.allocator;
arg0 = %return (args_it.next(allocator) ?? error.MissingArg0);
defer allocator.free(arg0);
var build_mode = builtin.Mode.Debug;
var strip = false;
var is_static = false;
var verbose = false;
var verbose_link = false;
var verbose_ir = false;
var mwindows = false;
var mconsole = false;
while (args_it.next()) |arg_or_err| {
const arg = %return arg_or_err;
if (arg[0] == '-') {
if (strcmp(arg, "--release-fast") == 0) {
build_mode = builtin.Mode.ReleaseFast;
} else if (strcmp(arg, "--release-safe") == 0) {
build_mode = builtin.Mode.ReleaseSafe;
} else if (strcmp(arg, "--strip") == 0) {
strip = true;
} else if (strcmp(arg, "--static") == 0) {
is_static = true;
} else if (strcmp(arg, "--verbose") == 0) {
verbose = true;
} else if (strcmp(arg, "--verbose-link") == 0) {
verbose_link = true;
} else if (strcmp(arg, "--verbose-ir") == 0) {
verbose_ir = true;
} else if (strcmp(arg, "-mwindows") == 0) {
mwindows = true;
} else if (strcmp(arg, "-mconsole") == 0) {
mconsole = true;
} else if (strcmp(arg, "-municode") == 0) {
municode = true;
} else if (strcmp(arg, "-rdynamic") == 0) {
rdynamic = true;
} else if (strcmp(arg, "--each-lib-rpath") == 0) {
each_lib_rpath = true;
} else if (strcmp(arg, "--enable-timing-info") == 0) {
timing_info = true;
} else if (strcmp(arg, "--test-cmd-bin") == 0) {
test_exec_args.append(nullptr);
} else if (arg[1] == 'L' && arg[2] != 0) {
// alias for --library-path
lib_dirs.append(&arg[2]);
} else if (strcmp(arg, "--pkg-begin") == 0) {
if (i + 2 >= argc) {
fprintf(stderr, "Expected 2 arguments after --pkg-begin\n");
return usage(arg0);
}
CliPkg *new_cur_pkg = allocate<CliPkg>(1);
i += 1;
new_cur_pkg->name = argv[i];
i += 1;
new_cur_pkg->path = argv[i];
new_cur_pkg->parent = cur_pkg;
cur_pkg->children.append(new_cur_pkg);
cur_pkg = new_cur_pkg;
} else if (strcmp(arg, "--pkg-end") == 0) {
if (cur_pkg->parent == nullptr) {
fprintf(stderr, "Encountered --pkg-end with no matching --pkg-begin\n");
return EXIT_FAILURE;
}
cur_pkg = cur_pkg->parent;
} else if (i + 1 >= argc) {
fprintf(stderr, "Expected another argument after %s\n", arg);
return usage(arg0);
} else {
i += 1;
if (strcmp(arg, "--output") == 0) {
out_file = argv[i];
} else if (strcmp(arg, "--output-h") == 0) {
out_file_h = argv[i];
} else if (strcmp(arg, "--color") == 0) {
if (strcmp(argv[i], "auto") == 0) {
color = ErrColorAuto;
} else if (strcmp(argv[i], "on") == 0) {
color = ErrColorOn;
} else if (strcmp(argv[i], "off") == 0) {
color = ErrColorOff;
} else {
fprintf(stderr, "--color options are 'auto', 'on', or 'off'\n");
return usage(arg0);
}
} else if (strcmp(arg, "--name") == 0) {
out_name = argv[i];
} else if (strcmp(arg, "--libc-lib-dir") == 0) {
libc_lib_dir = argv[i];
} else if (strcmp(arg, "--libc-static-lib-dir") == 0) {
libc_static_lib_dir = argv[i];
} else if (strcmp(arg, "--libc-include-dir") == 0) {
libc_include_dir = argv[i];
} else if (strcmp(arg, "--msvc-lib-dir") == 0) {
msvc_lib_dir = argv[i];
} else if (strcmp(arg, "--kernel32-lib-dir") == 0) {
kernel32_lib_dir = argv[i];
} else if (strcmp(arg, "--zig-install-prefix") == 0) {
zig_install_prefix = argv[i];
} else if (strcmp(arg, "--dynamic-linker") == 0) {
dynamic_linker = argv[i];
} else if (strcmp(arg, "-isystem") == 0) {
clang_argv.append("-isystem");
clang_argv.append(argv[i]);
} else if (strcmp(arg, "-dirafter") == 0) {
clang_argv.append("-dirafter");
clang_argv.append(argv[i]);
} else if (strcmp(arg, "-mllvm") == 0) {
clang_argv.append("-mllvm");
clang_argv.append(argv[i]);
llvm_argv.append(argv[i]);
} else if (strcmp(arg, "--library-path") == 0 || strcmp(arg, "-L") == 0) {
lib_dirs.append(argv[i]);
} else if (strcmp(arg, "--library") == 0) {
link_libs.append(argv[i]);
} else if (strcmp(arg, "--object") == 0) {
objects.append(argv[i]);
} else if (strcmp(arg, "--assembly") == 0) {
asm_files.append(argv[i]);
} else if (strcmp(arg, "--cache-dir") == 0) {
cache_dir = argv[i];
} else if (strcmp(arg, "--target-arch") == 0) {
target_arch = argv[i];
} else if (strcmp(arg, "--target-os") == 0) {
target_os = argv[i];
} else if (strcmp(arg, "--target-environ") == 0) {
target_environ = argv[i];
} else if (strcmp(arg, "-mmacosx-version-min") == 0) {
mmacosx_version_min = argv[i];
} else if (strcmp(arg, "-mios-version-min") == 0) {
mios_version_min = argv[i];
} else if (strcmp(arg, "-framework") == 0) {
frameworks.append(argv[i]);
} else if (strcmp(arg, "--linker-script") == 0) {
linker_script = argv[i];
} else if (strcmp(arg, "-rpath") == 0) {
rpath_list.append(argv[i]);
} else if (strcmp(arg, "--test-filter") == 0) {
test_filter = argv[i];
} else if (strcmp(arg, "--test-name-prefix") == 0) {
test_name_prefix = argv[i];
} else if (strcmp(arg, "--ver-major") == 0) {
ver_major = atoi(argv[i]);
} else if (strcmp(arg, "--ver-minor") == 0) {
ver_minor = atoi(argv[i]);
} else if (strcmp(arg, "--ver-patch") == 0) {
ver_patch = atoi(argv[i]);
} else if (strcmp(arg, "--test-cmd") == 0) {
test_exec_args.append(argv[i]);
} else {
fprintf(stderr, "Invalid argument: %s\n", arg);
return usage(arg0);
}
}
}
}
}
fn printUsage(outstream: &io.OutStream) -> %void {
%return outstream.print("Usage: {} [command] [options]\n", arg0);
%return outstream.write(
\\Commands:
\\ build build project from build.zig
\\ build-exe [source] create executable from source or object files
\\ build-lib [source] create library from source or object files
\\ build-obj [source] create object from source or assembly
\\ translate-c [source] convert c code to zig code
\\ targets list available compilation targets
\\ test [source] create and run a test build
\\ version print version number and exit
\\ zen print zen of zig and exit
\\Compile Options:
\\ --assembly [source] add assembly file to build
\\ --cache-dir [path] override the cache directory
\\ --color [auto|off|on] enable or disable colored error messages
\\ --enable-timing-info print timing diagnostics
\\ --libc-include-dir [path] directory where libc stdlib.h resides
\\ --name [name] override output name
\\ --output [file] override destination path
\\ --output-h [file] override generated header file path
\\ --pkg-begin [name] [path] make package available to import and push current pkg
\\ --pkg-end pop current pkg
\\ --release-fast build with optimizations on and safety off
\\ --release-safe build with optimizations on and safety on
\\ --static output will be statically linked
\\ --strip exclude debug symbols
\\ --target-arch [name] specify target architecture
\\ --target-environ [name] specify target environment
\\ --target-os [name] specify target operating system
\\ --verbose turn on compiler debug output
\\ --verbose-link turn on compiler debug output for linking only
\\ --verbose-ir turn on compiler debug output for IR only
\\ --zig-install-prefix [path] override directory where zig thinks it is installed
\\ -dirafter [dir] same as -isystem but do it last
\\ -isystem [dir] add additional search path for other .h files
\\ -mllvm [arg] additional arguments to forward to LLVM's option processing
\\Link Options:
\\ --ar-path [path] set the path to ar
\\ --dynamic-linker [path] set the path to ld.so
\\ --each-lib-rpath add rpath for each used dynamic library
\\ --libc-lib-dir [path] directory where libc crt1.o resides
\\ --libc-static-lib-dir [path] directory where libc crtbegin.o resides
\\ --msvc-lib-dir [path] (windows) directory where vcruntime.lib resides
\\ --kernel32-lib-dir [path] (windows) directory where kernel32.lib resides
\\ --library [lib] link against lib
\\ --library-path [dir] add a directory to the library search path
\\ --linker-script [path] use a custom linker script
\\ --object [obj] add object file to build
\\ -L[dir] alias for --library-path
\\ -rdynamic add all symbols to the dynamic symbol table
\\ -rpath [path] add directory to the runtime library search path
\\ -mconsole (windows) --subsystem console to the linker
\\ -mwindows (windows) --subsystem windows to the linker
\\ -municode (windows) link with unicode
\\ -framework [name] (darwin) link against framework
\\ -mios-version-min [ver] (darwin) set iOS deployment target
\\ -mmacosx-version-min [ver] (darwin) set Mac OS X deployment target
\\ --ver-major [ver] dynamic library semver major version
\\ --ver-minor [ver] dynamic library semver minor version
\\ --ver-patch [ver] dynamic library semver patch version
\\Test Options:
\\ --test-filter [text] skip tests that do not match filter
\\ --test-name-prefix [text] add prefix to all tests
\\ --test-cmd [arg] specify test execution command one arg at a time
\\ --test-cmd-bin appends test binary path to test cmd args
\\
);
}
const ZIG_ZEN =
\\ * Communicate intent precisely.
\\ * Edge cases matter.
\\ * Favor reading code over writing code.
\\ * Only one obvious way to do things.
\\ * Runtime crashes are better than bugs.
\\ * Compile errors are better than runtime crashes.
\\ * Incremental improvements.
\\ * Avoid local maximums.
\\ * Reduce the amount one must remember.
\\ * Minimize energy spent on coding style.
\\ * Together we serve end users.
\\
;