89763c9a0d
This modifies the build process of Zig to put all of the source files
into libcompiler.a, except main.cpp and userland.cpp.
Next, the build process links main.cpp, userland.cpp, and libcompiler.a
into zig1. userland.cpp is a shim for functions that will later be
replaced with self-hosted implementations.
Next, the build process uses zig1 to build src-self-hosted/stage1.zig
into libuserland.a, which does not depend on any of the things that
are shimmed in userland.cpp, such as translate-c.
Finally, the build process re-links main.cpp and libcompiler.a, except
with libuserland.a instead of userland.cpp. Now the shims are replaced
with .zig code. This provides all of the Zig standard library to the
stage1 C++ compiler, and enables us to move certain things to userland,
such as translate-c.
As a proof of concept I have made the `zig zen` command use text defined
in userland. I added `zig translate-c-2` which is a work-in-progress
reimplementation of translate-c in userland, which currently calls
`std.debug.panic("unimplemented")` and you can see the stack trace makes
it all the way back into the C++ main() function (Thanks LemonBoy for
improving that!).
This could potentially let us move other things into userland, such as
hashing algorithms, the entire cache system, .d file parsing, pretty
much anything that libuserland.a itself doesn't need to depend on.
This can also let us have `zig fmt` in stage1 without the overhead
of child process execution, and without the initial compilation delay
before it gets cached.
See #1964
58 lines
2.4 KiB
C++
58 lines
2.4 KiB
C++
/*
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* Copyright (c) 2015 Andrew Kelley
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*
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* This file is part of zig, which is MIT licensed.
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* See http://opensource.org/licenses/MIT
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*/
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#ifndef ZIG_CODEGEN_HPP
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#define ZIG_CODEGEN_HPP
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#include "parser.hpp"
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#include "errmsg.hpp"
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#include "target.hpp"
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#include "libc_installation.hpp"
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#include <stdio.h>
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CodeGen *codegen_create(Buf *main_pkg_path, Buf *root_src_path, const ZigTarget *target,
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OutType out_type, BuildMode build_mode, Buf *zig_lib_dir, Buf *override_std_dir,
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ZigLibCInstallation *libc, Buf *cache_dir);
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void codegen_set_clang_argv(CodeGen *codegen, const char **args, size_t len);
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void codegen_set_llvm_argv(CodeGen *codegen, const char **args, size_t len);
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void codegen_set_is_test(CodeGen *codegen, bool is_test);
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void codegen_set_each_lib_rpath(CodeGen *codegen, bool each_lib_rpath);
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void codegen_set_emit_file_type(CodeGen *g, EmitFileType emit_file_type);
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void codegen_set_strip(CodeGen *codegen, bool strip);
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void codegen_set_errmsg_color(CodeGen *codegen, ErrColor err_color);
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void codegen_set_out_name(CodeGen *codegen, Buf *out_name);
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void codegen_add_lib_dir(CodeGen *codegen, const char *dir);
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void codegen_add_forbidden_lib(CodeGen *codegen, Buf *lib);
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LinkLib *codegen_add_link_lib(CodeGen *codegen, Buf *lib);
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void codegen_add_framework(CodeGen *codegen, const char *name);
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void codegen_add_rpath(CodeGen *codegen, const char *name);
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void codegen_set_rdynamic(CodeGen *g, bool rdynamic);
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void codegen_set_mmacosx_version_min(CodeGen *g, Buf *mmacosx_version_min);
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void codegen_set_mios_version_min(CodeGen *g, Buf *mios_version_min);
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void codegen_set_linker_script(CodeGen *g, const char *linker_script);
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void codegen_set_test_filter(CodeGen *g, Buf *filter);
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void codegen_set_test_name_prefix(CodeGen *g, Buf *prefix);
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void codegen_set_lib_version(CodeGen *g, size_t major, size_t minor, size_t patch);
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void codegen_add_time_event(CodeGen *g, const char *name);
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void codegen_print_timing_report(CodeGen *g, FILE *f);
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void codegen_link(CodeGen *g);
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void codegen_build_and_link(CodeGen *g);
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ZigPackage *codegen_create_package(CodeGen *g, const char *root_src_dir, const char *root_src_path,
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const char *pkg_path);
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void codegen_add_assembly(CodeGen *g, Buf *path);
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void codegen_add_object(CodeGen *g, Buf *object_path);
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AstNode *codegen_translate_c(CodeGen *g, Buf *path, bool use_userland_implementation);
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Buf *codegen_generate_builtin_source(CodeGen *g);
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#endif
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