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-rw-r--r--src/link.cpp83
1 files changed, 55 insertions, 28 deletions
diff --git a/src/link.cpp b/src/link.cpp
index 8b75f0e783..424b06169e 100644
--- a/src/link.cpp
+++ b/src/link.cpp
@@ -29,10 +29,20 @@ static const char *get_libc_static_file(CodeGen *g, const char *file) {
return buf_ptr(out_buf);
}
-static Buf *build_o_raw(CodeGen *parent_gen, const char *oname, Buf *full_path) {
+static Buf *build_a_raw(CodeGen *parent_gen, const char *aname, Buf *full_path) {
ZigTarget *child_target = parent_gen->is_native_target ? nullptr : &parent_gen->zig_target;
- CodeGen *child_gen = codegen_create(full_path, child_target, OutTypeObj, parent_gen->build_mode,
- parent_gen->zig_lib_dir);
+
+ // The Mach-O LLD code is not well maintained, and trips an assertion
+ // when we link compiler_rt and builtin as libraries rather than objects.
+ // Here we workaround this by having compiler_rt and builtin be objects.
+ // TODO write our own linker. https://github.com/ziglang/zig/issues/1535
+ OutType child_out_type = OutTypeLib;
+ if (parent_gen->zig_target.os == OsMacOSX) {
+ child_out_type = OutTypeObj;
+ }
+
+ CodeGen *child_gen = codegen_create(full_path, child_target, child_out_type,
+ parent_gen->build_mode, parent_gen->zig_lib_dir);
child_gen->out_h_path = nullptr;
child_gen->verbose_tokenize = parent_gen->verbose_tokenize;
@@ -43,19 +53,22 @@ static Buf *build_o_raw(CodeGen *parent_gen, const char *oname, Buf *full_path)
child_gen->verbose_cimport = parent_gen->verbose_cimport;
codegen_set_strip(child_gen, parent_gen->strip_debug_symbols);
- codegen_set_is_static(child_gen, parent_gen->is_static);
+ codegen_set_is_static(child_gen, true);
+ child_gen->disable_pic = parent_gen->disable_pic;
- codegen_set_out_name(child_gen, buf_create_from_str(oname));
+ codegen_set_out_name(child_gen, buf_create_from_str(aname));
codegen_set_errmsg_color(child_gen, parent_gen->err_color);
codegen_set_mmacosx_version_min(child_gen, parent_gen->mmacosx_version_min);
codegen_set_mios_version_min(child_gen, parent_gen->mios_version_min);
- for (size_t i = 0; i < parent_gen->link_libs_list.length; i += 1) {
- LinkLib *link_lib = parent_gen->link_libs_list.at(i);
- LinkLib *new_link_lib = codegen_add_link_lib(child_gen, link_lib->name);
- new_link_lib->provided_explicitly = link_lib->provided_explicitly;
+ // This is so that compiler_rt and builtin libraries know whether they
+ // will eventually be linked with libc. They make different decisions
+ // about what to export depending on whether libc is linked.
+ if (parent_gen->libc_link_lib != nullptr) {
+ LinkLib *new_link_lib = codegen_add_link_lib(child_gen, parent_gen->libc_link_lib->name);
+ new_link_lib->provided_explicitly = parent_gen->libc_link_lib->provided_explicitly;
}
child_gen->enable_cache = true;
@@ -63,12 +76,12 @@ static Buf *build_o_raw(CodeGen *parent_gen, const char *oname, Buf *full_path)
return &child_gen->output_file_path;
}
-static Buf *build_o(CodeGen *parent_gen, const char *oname) {
- Buf *source_basename = buf_sprintf("%s.zig", oname);
+static Buf *build_a(CodeGen *parent_gen, const char *aname) {
+ Buf *source_basename = buf_sprintf("%s.zig", aname);
Buf *full_path = buf_alloc();
os_path_join(parent_gen->zig_std_special_dir, source_basename, full_path);
- return build_o_raw(parent_gen, oname, full_path);
+ return build_a_raw(parent_gen, aname, full_path);
}
static Buf *build_compiler_rt(CodeGen *parent_gen) {
@@ -77,7 +90,7 @@ static Buf *build_compiler_rt(CodeGen *parent_gen) {
Buf *full_path = buf_alloc();
os_path_join(dir_path, buf_create_from_str("index.zig"), full_path);
- return build_o_raw(parent_gen, "compiler_rt", full_path);
+ return build_a_raw(parent_gen, "compiler_rt", full_path);
}
static const char *get_darwin_arch_string(const ZigTarget *t) {
@@ -197,6 +210,8 @@ static Buf *get_dynamic_linker_path(CodeGen *g) {
static void construct_linker_job_elf(LinkJob *lj) {
CodeGen *g = lj->codegen;
+ lj->args.append("-error-limit=0");
+
if (g->libc_link_lib != nullptr) {
find_libc_lib_path(g);
}
@@ -215,10 +230,9 @@ static void construct_linker_job_elf(LinkJob *lj) {
lj->args.append(getLDMOption(&g->zig_target));
bool is_lib = g->out_type == OutTypeLib;
- bool is_static = g->is_static || (!is_lib && g->link_libs_list.length == 0);
- bool shared = !is_static && is_lib;
+ bool shared = !g->is_static && is_lib;
Buf *soname = nullptr;
- if (is_static) {
+ if (g->is_static) {
if (g->zig_target.arch.arch == ZigLLVM_arm || g->zig_target.arch.arch == ZigLLVM_armeb ||
g->zig_target.arch.arch == ZigLLVM_thumb || g->zig_target.arch.arch == ZigLLVM_thumbeb)
{
@@ -242,7 +256,7 @@ static void construct_linker_job_elf(LinkJob *lj) {
if (lj->link_in_crt) {
const char *crt1o;
const char *crtbegino;
- if (is_static) {
+ if (g->is_static) {
crt1o = "crt1.o";
crtbegino = "crtbeginT.o";
} else {
@@ -293,7 +307,7 @@ static void construct_linker_job_elf(LinkJob *lj) {
lj->args.append(buf_ptr(g->libc_static_lib_dir));
}
- if (!is_static) {
+ if (!g->is_static) {
if (g->dynamic_linker != nullptr) {
assert(buf_len(g->dynamic_linker) != 0);
lj->args.append("-dynamic-linker");
@@ -315,10 +329,10 @@ static void construct_linker_job_elf(LinkJob *lj) {
lj->args.append((const char *)buf_ptr(g->link_objects.at(i)));
}
- if (g->out_type == OutTypeExe || g->out_type == OutTypeLib) {
+ if (g->out_type == OutTypeExe || (g->out_type == OutTypeLib && !g->is_static)) {
if (g->libc_link_lib == nullptr) {
- Buf *builtin_o_path = build_o(g, "builtin");
- lj->args.append(buf_ptr(builtin_o_path));
+ Buf *builtin_a_path = build_a(g, "builtin");
+ lj->args.append(buf_ptr(builtin_a_path));
}
// sometimes libgcc is missing stuff, so we still build compiler_rt and rely on weak linkage
@@ -345,7 +359,7 @@ static void construct_linker_job_elf(LinkJob *lj) {
// libc dep
if (g->libc_link_lib != nullptr) {
- if (is_static) {
+ if (g->is_static) {
lj->args.append("--start-group");
lj->args.append("-lgcc");
lj->args.append("-lgcc_eh");
@@ -387,6 +401,7 @@ static void construct_linker_job_elf(LinkJob *lj) {
static void construct_linker_job_wasm(LinkJob *lj) {
CodeGen *g = lj->codegen;
+ lj->args.append("-error-limit=0");
lj->args.append("--no-entry"); // So lld doesn't look for _start.
lj->args.append("-o");
lj->args.append(buf_ptr(&g->output_file_path));
@@ -425,6 +440,8 @@ static bool zig_lld_link(ZigLLVM_ObjectFormatType oformat, const char **args, si
static void construct_linker_job_coff(LinkJob *lj) {
CodeGen *g = lj->codegen;
+ lj->args.append("/ERRORLIMIT:0");
+
if (g->libc_link_lib != nullptr) {
find_libc_lib_path(g);
}
@@ -546,10 +563,10 @@ static void construct_linker_job_coff(LinkJob *lj) {
lj->args.append((const char *)buf_ptr(g->link_objects.at(i)));
}
- if (g->out_type == OutTypeExe || g->out_type == OutTypeLib) {
+ if (g->out_type == OutTypeExe || (g->out_type == OutTypeLib && !g->is_static)) {
if (g->libc_link_lib == nullptr) {
- Buf *builtin_o_path = build_o(g, "builtin");
- lj->args.append(buf_ptr(builtin_o_path));
+ Buf *builtin_a_path = build_a(g, "builtin");
+ lj->args.append(buf_ptr(builtin_a_path));
}
// msvc compiler_rt is missing some stuff, so we still build it and rely on weak linkage
@@ -761,6 +778,7 @@ static bool darwin_version_lt(DarwinPlatform *platform, int major, int minor) {
static void construct_linker_job_macho(LinkJob *lj) {
CodeGen *g = lj->codegen;
+ lj->args.append("-error-limit=0");
lj->args.append("-demangle");
if (g->linker_rdynamic) {
@@ -878,7 +896,7 @@ static void construct_linker_job_macho(LinkJob *lj) {
}
// compiler_rt on darwin is missing some stuff, so we still build it and rely on LinkOnce
- if (g->out_type == OutTypeExe || g->out_type == OutTypeLib) {
+ if (g->out_type == OutTypeExe || (g->out_type == OutTypeLib && !g->is_static)) {
Buf *compiler_rt_o_path = build_compiler_rt(g);
lj->args.append(buf_ptr(compiler_rt_o_path));
}
@@ -960,8 +978,17 @@ void codegen_link(CodeGen *g) {
}
if (g->out_type == OutTypeLib && g->is_static) {
- fprintf(stderr, "Zig does not yet support creating static libraries\nSee https://github.com/ziglang/zig/issues/1493\n");
- exit(1);
+ ZigList<const char *> file_names = {};
+ for (size_t i = 0; i < g->link_objects.length; i += 1) {
+ file_names.append((const char *)buf_ptr(g->link_objects.at(i)));
+ }
+ ZigLLVM_OSType os_type = get_llvm_os_type(g->zig_target.os);
+ codegen_add_time_event(g, "LLVM Link");
+ if (ZigLLVMWriteArchive(buf_ptr(&g->output_file_path), file_names.items, file_names.length, os_type)) {
+ fprintf(stderr, "Unable to write archive '%s'\n", buf_ptr(&g->output_file_path));
+ exit(1);
+ }
+ return;
}
lj.link_in_crt = (g->libc_link_lib != nullptr && g->out_type == OutTypeExe);
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-29 14:21:34 +0000