826 lines
25 KiB
C++
826 lines
25 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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#include "link.hpp"
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#include "os.hpp"
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#include "config.h"
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#include "codegen.hpp"
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#include "analyze.hpp"
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struct LinkJob {
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CodeGen *codegen;
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Buf out_file;
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ZigList<const char *> args;
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bool link_in_crt;
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HashMap<Buf *, bool, buf_hash, buf_eql_buf> rpath_table;
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};
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static const char *get_libc_file(CodeGen *g, const char *file) {
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Buf *out_buf = buf_alloc();
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os_path_join(g->libc_lib_dir, buf_create_from_str(file), out_buf);
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return buf_ptr(out_buf);
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}
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static const char *get_libc_static_file(CodeGen *g, const char *file) {
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Buf *out_buf = buf_alloc();
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os_path_join(g->libc_static_lib_dir, buf_create_from_str(file), out_buf);
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return buf_ptr(out_buf);
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}
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static Buf *build_o_raw(CodeGen *parent_gen, const char *oname, Buf *full_path) {
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ZigTarget *child_target = parent_gen->is_native_target ? nullptr : &parent_gen->zig_target;
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CodeGen *child_gen = codegen_create(full_path, child_target, OutTypeObj, parent_gen->build_mode);
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codegen_set_omit_zigrt(child_gen, true);
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child_gen->want_h_file = false;
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codegen_set_cache_dir(child_gen, parent_gen->cache_dir);
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codegen_set_strip(child_gen, parent_gen->strip_debug_symbols);
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codegen_set_is_static(child_gen, parent_gen->is_static);
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codegen_set_out_name(child_gen, buf_create_from_str(oname));
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codegen_set_verbose(child_gen, parent_gen->verbose);
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codegen_set_errmsg_color(child_gen, parent_gen->err_color);
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codegen_set_mmacosx_version_min(child_gen, parent_gen->mmacosx_version_min);
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codegen_set_mios_version_min(child_gen, parent_gen->mios_version_min);
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codegen_build(child_gen);
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const char *o_ext = target_o_file_ext(&child_gen->zig_target);
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Buf *o_out_name = buf_sprintf("%s%s", oname, o_ext);
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Buf *output_path = buf_alloc();
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os_path_join(parent_gen->cache_dir, o_out_name, output_path);
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codegen_link(child_gen, buf_ptr(output_path));
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return output_path;
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}
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static Buf *build_o(CodeGen *parent_gen, const char *oname) {
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Buf *source_basename = buf_sprintf("%s.zig", oname);
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Buf *full_path = buf_alloc();
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os_path_join(parent_gen->zig_std_special_dir, source_basename, full_path);
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return build_o_raw(parent_gen, oname, full_path);
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}
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static Buf *build_compiler_rt(CodeGen *parent_gen) {
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Buf *dir_path = buf_alloc();
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os_path_join(parent_gen->zig_std_special_dir, buf_create_from_str("compiler_rt"), dir_path);
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Buf *full_path = buf_alloc();
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os_path_join(dir_path, buf_create_from_str("index.zig"), full_path);
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return build_o_raw(parent_gen, "compiler_rt", full_path);
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}
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static const char *get_exe_file_extension(CodeGen *g) {
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if (g->zig_target.os == ZigLLVM_Win32) {
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return ".exe";
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} else {
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return "";
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}
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}
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static const char *get_darwin_arch_string(const ZigTarget *t) {
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switch (t->arch.arch) {
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case ZigLLVM_aarch64:
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return "arm64";
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case ZigLLVM_thumb:
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case ZigLLVM_arm:
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return "arm";
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case ZigLLVM_ppc:
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return "ppc";
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case ZigLLVM_ppc64:
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return "ppc64";
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case ZigLLVM_ppc64le:
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return "ppc64le";
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default:
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return ZigLLVMGetArchTypeName(t->arch.arch);
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}
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}
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static const char *getLDMOption(const ZigTarget *t) {
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switch (t->arch.arch) {
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case ZigLLVM_x86:
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return "elf_i386";
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case ZigLLVM_aarch64:
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return "aarch64linux";
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case ZigLLVM_aarch64_be:
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return "aarch64_be_linux";
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case ZigLLVM_arm:
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case ZigLLVM_thumb:
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return "armelf_linux_eabi";
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case ZigLLVM_armeb:
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case ZigLLVM_thumbeb:
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return "armebelf_linux_eabi";
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case ZigLLVM_ppc:
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return "elf32ppclinux";
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case ZigLLVM_ppc64:
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return "elf64ppc";
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case ZigLLVM_ppc64le:
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return "elf64lppc";
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case ZigLLVM_sparc:
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case ZigLLVM_sparcel:
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return "elf32_sparc";
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case ZigLLVM_sparcv9:
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return "elf64_sparc";
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case ZigLLVM_mips:
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return "elf32btsmip";
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case ZigLLVM_mipsel:
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return "elf32ltsmip";
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return "elf64btsmip";
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case ZigLLVM_mips64el:
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return "elf64ltsmip";
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case ZigLLVM_systemz:
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return "elf64_s390";
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case ZigLLVM_x86_64:
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if (t->env_type == ZigLLVM_GNUX32) {
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return "elf32_x86_64";
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}
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return "elf_x86_64";
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default:
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zig_unreachable();
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}
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}
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static void add_rpath(LinkJob *lj, Buf *rpath) {
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if (lj->rpath_table.maybe_get(rpath) != nullptr)
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return;
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lj->args.append("-rpath");
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lj->args.append(buf_ptr(rpath));
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lj->rpath_table.put(rpath, true);
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}
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static void construct_linker_job_elf(LinkJob *lj) {
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CodeGen *g = lj->codegen;
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if (lj->link_in_crt) {
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find_libc_lib_path(g);
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}
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if (g->linker_script) {
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lj->args.append("-T");
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lj->args.append(g->linker_script);
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}
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lj->args.append("--gc-sections");
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lj->args.append("-m");
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lj->args.append(getLDMOption(&g->zig_target));
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bool is_lib = g->out_type == OutTypeLib;
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bool shared = !g->is_static && is_lib;
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Buf *soname = nullptr;
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if (g->is_static) {
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if (g->zig_target.arch.arch == ZigLLVM_arm || g->zig_target.arch.arch == ZigLLVM_armeb ||
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g->zig_target.arch.arch == ZigLLVM_thumb || g->zig_target.arch.arch == ZigLLVM_thumbeb)
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{
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lj->args.append("-Bstatic");
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} else {
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lj->args.append("-static");
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}
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} else if (shared) {
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lj->args.append("-shared");
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if (buf_len(&lj->out_file) == 0) {
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buf_appendf(&lj->out_file, "lib%s.so.%" ZIG_PRI_usize ".%" ZIG_PRI_usize ".%" ZIG_PRI_usize "",
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buf_ptr(g->root_out_name), g->version_major, g->version_minor, g->version_patch);
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}
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soname = buf_sprintf("lib%s.so.%" ZIG_PRI_usize "", buf_ptr(g->root_out_name), g->version_major);
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}
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lj->args.append("-o");
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lj->args.append(buf_ptr(&lj->out_file));
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if (lj->link_in_crt) {
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const char *crt1o;
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const char *crtbegino;
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if (g->is_static) {
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crt1o = "crt1.o";
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crtbegino = "crtbeginT.o";
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} else {
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crt1o = "Scrt1.o";
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crtbegino = "crtbegin.o";
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}
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lj->args.append(get_libc_file(g, crt1o));
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lj->args.append(get_libc_file(g, "crti.o"));
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lj->args.append(get_libc_static_file(g, crtbegino));
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}
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for (size_t i = 0; i < g->rpath_list.length; i += 1) {
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Buf *rpath = g->rpath_list.at(i);
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add_rpath(lj, rpath);
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}
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if (g->each_lib_rpath) {
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for (size_t i = 0; i < g->lib_dirs.length; i += 1) {
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const char *lib_dir = g->lib_dirs.at(i);
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for (size_t i = 0; i < g->link_libs_list.length; i += 1) {
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LinkLib *link_lib = g->link_libs_list.at(i);
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if (buf_eql_str(link_lib->name, "c")) {
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continue;
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}
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bool does_exist;
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Buf *test_path = buf_sprintf("%s/lib%s.so", lib_dir, buf_ptr(link_lib->name));
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if (os_file_exists(test_path, &does_exist) != ErrorNone) {
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zig_panic("link: unable to check if file exists: %s", buf_ptr(test_path));
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}
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if (does_exist) {
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add_rpath(lj, buf_create_from_str(lib_dir));
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break;
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}
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}
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}
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}
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for (size_t i = 0; i < g->lib_dirs.length; i += 1) {
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const char *lib_dir = g->lib_dirs.at(i);
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lj->args.append("-L");
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lj->args.append(lib_dir);
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}
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if (g->libc_link_lib != nullptr) {
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lj->args.append("-L");
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lj->args.append(buf_ptr(g->libc_lib_dir));
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lj->args.append("-L");
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lj->args.append(buf_ptr(g->libc_static_lib_dir));
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}
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if (g->dynamic_linker && buf_len(g->dynamic_linker) > 0) {
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lj->args.append("-dynamic-linker");
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lj->args.append(buf_ptr(g->dynamic_linker));
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} else {
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lj->args.append("-dynamic-linker");
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lj->args.append(buf_ptr(target_dynamic_linker(&g->zig_target)));
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}
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if (shared) {
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lj->args.append("-soname");
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lj->args.append(buf_ptr(soname));
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}
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// .o files
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for (size_t i = 0; i < g->link_objects.length; i += 1) {
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lj->args.append((const char *)buf_ptr(g->link_objects.at(i)));
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}
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if (g->libc_link_lib == nullptr && (g->out_type == OutTypeExe || g->out_type == OutTypeLib)) {
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Buf *builtin_o_path = build_o(g, "builtin");
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lj->args.append(buf_ptr(builtin_o_path));
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Buf *compiler_rt_o_path = build_compiler_rt(g);
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lj->args.append(buf_ptr(compiler_rt_o_path));
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}
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for (size_t i = 0; i < g->link_libs_list.length; i += 1) {
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LinkLib *link_lib = g->link_libs_list.at(i);
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if (buf_eql_str(link_lib->name, "c")) {
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continue;
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}
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Buf *arg;
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if (buf_starts_with_str(link_lib->name, "/") || buf_ends_with_str(link_lib->name, ".a") ||
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buf_ends_with_str(link_lib->name, ".so"))
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{
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arg = link_lib->name;
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} else {
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arg = buf_sprintf("-l%s", buf_ptr(link_lib->name));
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}
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lj->args.append(buf_ptr(arg));
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}
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// libc dep
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if (g->libc_link_lib != nullptr) {
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if (g->is_static) {
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lj->args.append("--start-group");
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lj->args.append("-lgcc");
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lj->args.append("-lgcc_eh");
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lj->args.append("-lc");
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lj->args.append("-lm");
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lj->args.append("--end-group");
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} else {
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lj->args.append("-lgcc");
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lj->args.append("--as-needed");
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lj->args.append("-lgcc_s");
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lj->args.append("--no-as-needed");
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lj->args.append("-lc");
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lj->args.append("-lm");
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lj->args.append("-lgcc");
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lj->args.append("--as-needed");
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lj->args.append("-lgcc_s");
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lj->args.append("--no-as-needed");
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}
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}
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// crt end
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if (lj->link_in_crt) {
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lj->args.append(get_libc_static_file(g, "crtend.o"));
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lj->args.append(get_libc_file(g, "crtn.o"));
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}
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}
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static bool is_target_cyg_mingw(const ZigTarget *target) {
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return (target->os == ZigLLVM_Win32 && target->env_type == ZigLLVM_Cygnus) ||
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(target->os == ZigLLVM_Win32 && target->env_type == ZigLLVM_GNU);
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}
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static void construct_linker_job_coff(LinkJob *lj) {
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CodeGen *g = lj->codegen;
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if (lj->link_in_crt) {
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find_libc_lib_path(g);
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}
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lj->args.append("-NOLOGO");
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if (g->zig_target.arch.arch == ZigLLVM_x86) {
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lj->args.append("-MACHINE:X86");
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} else if (g->zig_target.arch.arch == ZigLLVM_x86_64) {
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lj->args.append("-MACHINE:X64");
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} else if (g->zig_target.arch.arch == ZigLLVM_arm) {
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lj->args.append("-MACHINE:ARM");
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}
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if (g->windows_subsystem_windows) {
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lj->args.append("/SUBSYSTEM:windows");
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} else if (g->windows_subsystem_console) {
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lj->args.append("/SUBSYSTEM:console");
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}
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//bool dll = g->out_type == OutTypeLib;
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//bool shared = !g->is_static && dll;
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//if (g->is_static) {
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// lj->args.append("-Bstatic");
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//} else {
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// if (dll) {
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// lj->args.append("--dll");
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// } else if (shared) {
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// lj->args.append("--shared");
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// }
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// lj->args.append("-Bdynamic");
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// if (dll || shared) {
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// lj->args.append("-e");
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// if (g->zig_target.arch.arch == ZigLLVM_x86) {
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// lj->args.append("_DllMainCRTStartup@12");
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// } else {
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// lj->args.append("DllMainCRTStartup");
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// }
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// lj->args.append("--enable-auto-image-base");
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// }
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//}
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lj->args.append(buf_ptr(buf_sprintf("-OUT:%s", buf_ptr(&lj->out_file))));
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if (lj->link_in_crt) {
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zig_panic("TODO link in c runtime");
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//if (shared || dll) {
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// lj->args.append(get_libc_file(g, "dllcrt2.o"));
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//} else {
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// if (g->windows_linker_unicode) {
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// lj->args.append(get_libc_file(g, "crt2u.o"));
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// } else {
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// lj->args.append(get_libc_file(g, "crt2.o"));
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// }
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//}
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//lj->args.append(get_libc_static_file(g, "crtbegin.o"));
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} else {
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lj->args.append("-NODEFAULTLIB");
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lj->args.append("-ENTRY:_start");
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}
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for (size_t i = 0; i < g->lib_dirs.length; i += 1) {
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const char *lib_dir = g->lib_dirs.at(i);
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lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", lib_dir)));
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}
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if (g->libc_link_lib != nullptr) {
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lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", buf_ptr(g->libc_lib_dir))));
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lj->args.append(buf_ptr(buf_sprintf("-LIBPATH:%s", buf_ptr(g->libc_static_lib_dir))));
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}
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for (size_t i = 0; i < g->link_objects.length; i += 1) {
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lj->args.append((const char *)buf_ptr(g->link_objects.at(i)));
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}
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if (g->libc_link_lib == nullptr && (g->out_type == OutTypeExe || g->out_type == OutTypeLib)) {
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Buf *builtin_o_path = build_o(g, "builtin");
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lj->args.append(buf_ptr(builtin_o_path));
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Buf *compiler_rt_o_path = build_compiler_rt(g);
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lj->args.append(buf_ptr(compiler_rt_o_path));
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}
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Buf *def_contents = buf_alloc();
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for (size_t lib_i = 0; lib_i < g->link_libs_list.length; lib_i += 1) {
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LinkLib *link_lib = g->link_libs_list.at(lib_i);
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if (buf_eql_str(link_lib->name, "c")) {
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continue;
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}
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if (link_lib->provided_explicitly) {
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Buf *arg = buf_sprintf("-l%s", buf_ptr(link_lib->name));
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lj->args.append(buf_ptr(arg));
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} else {
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buf_appendf(def_contents, "LIBRARY %s\nEXPORTS\n", buf_ptr(link_lib->name));
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for (size_t exp_i = 0; exp_i < link_lib->symbols.length; exp_i += 1) {
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Buf *symbol_name = link_lib->symbols.at(exp_i);
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buf_appendf(def_contents, "%s\n", buf_ptr(symbol_name));
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}
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buf_appendf(def_contents, "\n");
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}
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}
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if (buf_len(def_contents) != 0) {
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Buf *dll_path = buf_alloc();
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os_path_join(g->cache_dir, buf_create_from_str("all.dll"), dll_path);
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ZigLLDDefToLib(def_contents, dll_path);
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Buf *all_lib_path = buf_alloc();
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os_path_join(g->cache_dir, buf_create_from_str("all.lib"), all_lib_path);
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lj->args.append(buf_ptr(all_lib_path));
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}
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|
|
if (g->libc_link_lib != nullptr) {
|
|
if (g->is_static) {
|
|
lj->args.append("--start-group");
|
|
}
|
|
|
|
lj->args.append("-lmingw32");
|
|
|
|
lj->args.append("-lgcc");
|
|
bool is_android = (g->zig_target.env_type == ZigLLVM_Android);
|
|
bool is_cyg_ming = is_target_cyg_mingw(&g->zig_target);
|
|
if (!g->is_static && !is_android) {
|
|
if (!is_cyg_ming) {
|
|
lj->args.append("--as-needed");
|
|
}
|
|
//lj->args.append("-lgcc_s");
|
|
if (!is_cyg_ming) {
|
|
lj->args.append("--no-as-needed");
|
|
}
|
|
}
|
|
if (g->is_static && !is_android) {
|
|
//lj->args.append("-lgcc_eh");
|
|
}
|
|
if (is_android && !g->is_static) {
|
|
lj->args.append("-ldl");
|
|
}
|
|
|
|
lj->args.append("-lmoldname");
|
|
lj->args.append("-lmingwex");
|
|
lj->args.append("-lmsvcrt");
|
|
|
|
|
|
if (g->windows_subsystem_windows) {
|
|
lj->args.append("-lgdi32");
|
|
lj->args.append("-lcomdlg32");
|
|
}
|
|
lj->args.append("-ladvapi32");
|
|
lj->args.append("-lshell32");
|
|
lj->args.append("-luser32");
|
|
lj->args.append("-lkernel32");
|
|
|
|
if (g->is_static) {
|
|
lj->args.append("--end-group");
|
|
}
|
|
|
|
if (lj->link_in_crt) {
|
|
lj->args.append(get_libc_static_file(g, "crtend.o"));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
|
|
// grouped values as integers. Numbers which are not provided are set to 0.
|
|
// return true if the entire string was parsed (9.2), or all groups were
|
|
// parsed (10.3.5extrastuff).
|
|
static bool darwin_get_release_version(const char *str, int *major, int *minor, int *micro, bool *had_extra) {
|
|
*had_extra = false;
|
|
|
|
*major = 0;
|
|
*minor = 0;
|
|
*micro = 0;
|
|
|
|
if (*str == '\0')
|
|
return false;
|
|
|
|
char *end;
|
|
*major = (int)strtol(str, &end, 10);
|
|
if (*str != '\0' && *end == '\0')
|
|
return true;
|
|
if (*end != '.')
|
|
return false;
|
|
|
|
str = end + 1;
|
|
*minor = (int)strtol(str, &end, 10);
|
|
if (*str != '\0' && *end == '\0')
|
|
return true;
|
|
if (*end != '.')
|
|
return false;
|
|
|
|
str = end + 1;
|
|
*micro = (int)strtol(str, &end, 10);
|
|
if (*str != '\0' && *end == '\0')
|
|
return true;
|
|
if (str == end)
|
|
return false;
|
|
*had_extra = true;
|
|
return true;
|
|
}
|
|
|
|
enum DarwinPlatformKind {
|
|
MacOS,
|
|
IPhoneOS,
|
|
IPhoneOSSimulator,
|
|
};
|
|
|
|
struct DarwinPlatform {
|
|
DarwinPlatformKind kind;
|
|
int major;
|
|
int minor;
|
|
int micro;
|
|
};
|
|
|
|
static void get_darwin_platform(LinkJob *lj, DarwinPlatform *platform) {
|
|
CodeGen *g = lj->codegen;
|
|
|
|
if (g->mmacosx_version_min) {
|
|
platform->kind = MacOS;
|
|
} else if (g->mios_version_min) {
|
|
platform->kind = IPhoneOS;
|
|
} else {
|
|
zig_panic("unable to infer -macosx-version-min or -mios-version-min");
|
|
}
|
|
|
|
bool had_extra;
|
|
if (platform->kind == MacOS) {
|
|
if (!darwin_get_release_version(buf_ptr(g->mmacosx_version_min),
|
|
&platform->major, &platform->minor, &platform->micro, &had_extra) ||
|
|
had_extra || platform->major != 10 || platform->minor >= 100 || platform->micro >= 100)
|
|
{
|
|
zig_panic("invalid -mmacosx-version-min");
|
|
}
|
|
} else if (platform->kind == IPhoneOS) {
|
|
if (!darwin_get_release_version(buf_ptr(g->mios_version_min),
|
|
&platform->major, &platform->minor, &platform->micro, &had_extra) ||
|
|
had_extra || platform->major >= 10 || platform->minor >= 100 || platform->micro >= 100)
|
|
{
|
|
zig_panic("invalid -mios-version-min");
|
|
}
|
|
} else {
|
|
zig_unreachable();
|
|
}
|
|
|
|
if (platform->kind == IPhoneOS &&
|
|
(g->zig_target.arch.arch == ZigLLVM_x86 ||
|
|
g->zig_target.arch.arch == ZigLLVM_x86_64))
|
|
{
|
|
platform->kind = IPhoneOSSimulator;
|
|
}
|
|
}
|
|
|
|
static bool darwin_version_lt(DarwinPlatform *platform, int major, int minor) {
|
|
if (platform->major < major) {
|
|
return true;
|
|
} else if (platform->major > major) {
|
|
return false;
|
|
}
|
|
if (platform->minor < minor) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void construct_linker_job_macho(LinkJob *lj) {
|
|
CodeGen *g = lj->codegen;
|
|
|
|
lj->args.append("-demangle");
|
|
|
|
if (g->linker_rdynamic) {
|
|
lj->args.append("-export_dynamic");
|
|
}
|
|
|
|
bool is_lib = g->out_type == OutTypeLib;
|
|
bool shared = !g->is_static && is_lib;
|
|
if (g->is_static) {
|
|
lj->args.append("-static");
|
|
} else {
|
|
lj->args.append("-dynamic");
|
|
}
|
|
|
|
if (is_lib) {
|
|
zig_panic("TODO linker args on darwin for making a library");
|
|
}
|
|
|
|
lj->args.append("-arch");
|
|
lj->args.append(get_darwin_arch_string(&g->zig_target));
|
|
|
|
DarwinPlatform platform;
|
|
get_darwin_platform(lj, &platform);
|
|
switch (platform.kind) {
|
|
case MacOS:
|
|
lj->args.append("-macosx_version_min");
|
|
break;
|
|
case IPhoneOS:
|
|
lj->args.append("-iphoneos_version_min");
|
|
break;
|
|
case IPhoneOSSimulator:
|
|
lj->args.append("-ios_simulator_version_min");
|
|
break;
|
|
}
|
|
lj->args.append(buf_ptr(buf_sprintf("%d.%d.%d", platform.major, platform.minor, platform.micro)));
|
|
|
|
|
|
if (g->out_type == OutTypeExe) {
|
|
if (g->is_static) {
|
|
lj->args.append("-no_pie");
|
|
} else {
|
|
lj->args.append("-pie");
|
|
}
|
|
}
|
|
|
|
lj->args.append("-o");
|
|
lj->args.append(buf_ptr(&lj->out_file));
|
|
|
|
if (shared) {
|
|
zig_panic("TODO");
|
|
} else if (g->is_static) {
|
|
lj->args.append("-lcrt0.o");
|
|
} else {
|
|
switch (platform.kind) {
|
|
case MacOS:
|
|
if (darwin_version_lt(&platform, 10, 5)) {
|
|
lj->args.append("-lcrt1.o");
|
|
} else if (darwin_version_lt(&platform, 10, 6)) {
|
|
lj->args.append("-lcrt1.10.5.o");
|
|
} else if (darwin_version_lt(&platform, 10, 8)) {
|
|
lj->args.append("-lcrt1.10.6.o");
|
|
}
|
|
break;
|
|
case IPhoneOS:
|
|
if (g->zig_target.arch.arch == ZigLLVM_aarch64) {
|
|
// iOS does not need any crt1 files for arm64
|
|
} else if (darwin_version_lt(&platform, 3, 1)) {
|
|
lj->args.append("-lcrt1.o");
|
|
} else if (darwin_version_lt(&platform, 6, 0)) {
|
|
lj->args.append("-lcrt1.3.1.o");
|
|
}
|
|
break;
|
|
case IPhoneOSSimulator:
|
|
// no crt1.o needed
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (size_t i = 0; i < g->lib_dirs.length; i += 1) {
|
|
const char *lib_dir = g->lib_dirs.at(i);
|
|
lj->args.append("-L");
|
|
lj->args.append(lib_dir);
|
|
}
|
|
|
|
for (size_t i = 0; i < g->link_objects.length; i += 1) {
|
|
lj->args.append((const char *)buf_ptr(g->link_objects.at(i)));
|
|
}
|
|
|
|
for (size_t i = 0; i < g->link_libs_list.length; i += 1) {
|
|
LinkLib *link_lib = g->link_libs_list.at(i);
|
|
if (buf_eql_str(link_lib->name, "c")) {
|
|
continue;
|
|
}
|
|
Buf *arg = buf_sprintf("-l%s", buf_ptr(link_lib->name));
|
|
lj->args.append(buf_ptr(arg));
|
|
}
|
|
|
|
// on Darwin, libSystem has libc in it, but also you have to use it
|
|
// to make syscalls because the syscall numbers are not documented
|
|
// and change between versions.
|
|
// so we always link against libSystem
|
|
lj->args.append("-lSystem");
|
|
|
|
if (platform.kind == MacOS) {
|
|
if (darwin_version_lt(&platform, 10, 5)) {
|
|
lj->args.append("-lgcc_s.10.4");
|
|
} else if (darwin_version_lt(&platform, 10, 6)) {
|
|
lj->args.append("-lgcc_s.10.5");
|
|
}
|
|
} else {
|
|
zig_panic("TODO");
|
|
}
|
|
|
|
for (size_t i = 0; i < g->darwin_frameworks.length; i += 1) {
|
|
lj->args.append("-framework");
|
|
lj->args.append(buf_ptr(g->darwin_frameworks.at(i)));
|
|
}
|
|
|
|
}
|
|
|
|
static void construct_linker_job(LinkJob *lj) {
|
|
switch (lj->codegen->zig_target.oformat) {
|
|
case ZigLLVM_UnknownObjectFormat:
|
|
zig_unreachable();
|
|
|
|
case ZigLLVM_COFF:
|
|
return construct_linker_job_coff(lj);
|
|
case ZigLLVM_ELF:
|
|
return construct_linker_job_elf(lj);
|
|
case ZigLLVM_MachO:
|
|
return construct_linker_job_macho(lj);
|
|
}
|
|
}
|
|
|
|
void codegen_link(CodeGen *g, const char *out_file) {
|
|
codegen_add_time_event(g, "Build Dependencies");
|
|
|
|
LinkJob lj = {0};
|
|
|
|
// even though we're calling LLD as a library it thinks the first
|
|
// argument is its own exe name
|
|
lj.args.append("lld");
|
|
|
|
lj.rpath_table.init(4);
|
|
lj.codegen = g;
|
|
if (out_file) {
|
|
buf_init_from_str(&lj.out_file, out_file);
|
|
} else {
|
|
buf_resize(&lj.out_file, 0);
|
|
}
|
|
|
|
if (g->verbose) {
|
|
fprintf(stderr, "\nOptimization:\n");
|
|
fprintf(stderr, "---------------\n");
|
|
LLVMDumpModule(g->module);
|
|
}
|
|
if (g->verbose) {
|
|
fprintf(stderr, "\nLink:\n");
|
|
fprintf(stderr, "-------\n");
|
|
}
|
|
|
|
bool override_out_file = (buf_len(&lj.out_file) != 0);
|
|
if (!override_out_file) {
|
|
assert(g->root_out_name);
|
|
|
|
buf_init_from_buf(&lj.out_file, g->root_out_name);
|
|
if (g->out_type == OutTypeExe) {
|
|
buf_append_str(&lj.out_file, get_exe_file_extension(g));
|
|
}
|
|
}
|
|
|
|
if (g->out_type == OutTypeObj) {
|
|
if (override_out_file) {
|
|
assert(g->link_objects.length == 1);
|
|
Buf *o_file_path = g->link_objects.at(0);
|
|
int err;
|
|
if ((err = os_rename(o_file_path, &lj.out_file))) {
|
|
zig_panic("unable to rename object file into final output: %s", err_str(err));
|
|
}
|
|
}
|
|
if (g->verbose) {
|
|
fprintf(stderr, "OK\n");
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (g->out_type == OutTypeLib && g->is_static) {
|
|
// invoke `ar`
|
|
// example:
|
|
// # static link into libfoo.a
|
|
// ar rcs libfoo.a foo1.o foo2.o
|
|
zig_panic("TODO invoke ar");
|
|
return;
|
|
}
|
|
|
|
lj.link_in_crt = (g->libc_link_lib != nullptr && g->out_type == OutTypeExe);
|
|
|
|
construct_linker_job(&lj);
|
|
|
|
|
|
if (g->verbose) {
|
|
for (size_t i = 0; i < lj.args.length; i += 1) {
|
|
const char *space = (i != 0) ? " " : "";
|
|
fprintf(stderr, "%s%s", space, lj.args.at(i));
|
|
}
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
Buf diag = BUF_INIT;
|
|
|
|
codegen_add_time_event(g, "LLVM Link");
|
|
if (!ZigLLDLink(g->zig_target.oformat, lj.args.items, lj.args.length, &diag)) {
|
|
fprintf(stderr, "%s\n", buf_ptr(&diag));
|
|
exit(1);
|
|
}
|
|
|
|
codegen_add_time_event(g, "Done");
|
|
|
|
if (g->verbose) {
|
|
fprintf(stderr, "OK\n");
|
|
}
|
|
}
|