fix build on macOS

Sadly due to a workaround for LLD linker limitations on macOS
we cannot put libuserland into an .a file; instead we have to use object
files. Again due to linker limitations, bundling compiler_rt.o into
another relocatable object also doesn't work. So we're left with
disabling stack probing on macOS for the stage1 self-hosted code.

These workarounds could all be removed if the macos support in the LLD
linker improved, or if Zig project had its own linker that did not have
these issues.

1 files changed, 6 insertions, 4 deletions

diff --git a/src/link.cpp b/src/link.cpp
index 810f6072ad..8900d0351b 100644
--- a/src/link.cpp
+++ b/src/link.cpp
@@ -25,6 +25,7 @@ static CodeGen *create_child_codegen(CodeGen *parent_gen, Buf *root_src_path, Ou
     CodeGen *child_gen = codegen_create(nullptr, root_src_path, parent_gen->zig_target, out_type,
         parent_gen->build_mode, parent_gen->zig_lib_dir, parent_gen->zig_std_dir, libc, get_stage1_cache_path());
     child_gen->disable_gen_h = true;
+    child_gen->disable_stack_probing = true;
     child_gen->verbose_tokenize = parent_gen->verbose_tokenize;
     child_gen->verbose_ast = parent_gen->verbose_ast;
     child_gen->verbose_link = parent_gen->verbose_link;
@@ -1653,6 +1654,11 @@ static void construct_linker_job(LinkJob *lj) {
     }
 }
 
+void zig_link_add_compiler_rt(CodeGen *g) {
+    Buf *compiler_rt_o_path = build_compiler_rt(g, OutTypeObj);
+    g->link_objects.append(compiler_rt_o_path);
+}
+
 void codegen_link(CodeGen *g) {
     codegen_add_time_event(g, "Build Dependencies");
 
@@ -1681,10 +1687,6 @@ void codegen_link(CodeGen *g) {
         for (size_t i = 0; i < g->link_objects.length; i += 1) {
             file_names.append(buf_ptr(g->link_objects.at(i)));
         }
-        if (g->bundle_compiler_rt) {
-            Buf *compiler_rt_o_path = build_compiler_rt(g, OutTypeObj);
-            file_names.append(buf_ptr(compiler_rt_o_path));
-        }
         ZigLLVM_OSType os_type = get_llvm_os_type(g->zig_target->os);
         codegen_add_time_event(g, "LLVM Link");
         if (g->verbose_link) {