Merge pull request #2526 from LemonBoy/arch-format-osx

Build archives using the K_DARWIN format when targeting osx

src/link.cpp

@@ -776,14 +776,6 @@ static const char *get_libc_crt_file(CodeGen *parent, const char *file) {
 }
 
 static Buf *build_a_raw(CodeGen *parent_gen, const char *aname, Buf *full_path, OutType child_out_type) {
-    // The Mach-O LLD code is not well maintained, and trips an assertion
-    // when we link compiler_rt and libc.zig as libraries rather than objects.
-    // Here we workaround this by having compiler_rt and libc.zig be objects.
-    // TODO write our own linker. https://github.com/ziglang/zig/issues/1535
-    if (parent_gen->zig_target->os == OsMacOSX) {
-        child_out_type = OutTypeObj;
-    }
-
     CodeGen *child_gen = create_child_codegen(parent_gen, full_path, child_out_type,
             parent_gen->libc);
     codegen_set_out_name(child_gen, buf_create_from_str(aname));

src/os.cpp

@@ -1350,7 +1350,7 @@ static void init_rand() {
         zig_panic("unable to open /dev/urandom");
     }
     char bytes[sizeof(unsigned)];
-    size_t amt_read;
+    ssize_t amt_read;
     while ((amt_read = read(fd, bytes, sizeof(unsigned))) == -1) {
         if (errno == EINTR) continue;
         zig_panic("unable to read /dev/urandom");

src/zig_llvm.cpp

@@ -877,6 +877,7 @@ bool ZigLLVMWriteArchive(const char *archive_name, const char **file_names, size
         case ZigLLVM_Linux:
             kind = object::Archive::K_GNU;
             break;
+        case ZigLLVM_MacOSX:
         case ZigLLVM_Darwin:
         case ZigLLVM_IOS:
             kind = object::Archive::K_DARWIN;