================
@@ -386,6 +386,11 @@ ifeq (,$(filter 1, $(USE_LIBSTDCPP) $(USE_LIBCPP) 
$(USE_SYSTEM_STDLIB)))
     ifneq "$(LIBCPP_INCLUDE_TARGET_DIR)" ""
       CXXFLAGS += -cxx-isystem $(LIBCPP_INCLUDE_TARGET_DIR)
     endif
+
+       # If `-nostdlib++` is not passed, clang will link to the system's 
stdlib.
+       ifeq ($(LDC), clang)
+               LDFLAGS += -nostdlib++ -nostdinc++
----------------
Michael137 wrote:

So it seems like `nostdlib++` is undocumented: 
https://clang.llvm.org/docs/ClangCommandLineReference.html#cmdoption-clang-nostdlib

But there is also 
[`-nostdlib`/`--no-standard-libraries`](https://clang.llvm.org/docs/ClangCommandLineReference.html#cmdoption-clang1-nostdlib).
 Which is also not documented.

>From my reading, looks like the two are synonymous. When specified, Clang 
>won't add the `-lc++`/`-lstdc++` flags.

But you're saying we need `-lnostdlib++`? That sounds like it is the underlying 
linker that Clang ends up invoking that needs this. I see GNU LD supports 
these: https://gcc.gnu.org/onlinedocs/gcc/Link-Options.html. Is that why we 
need them on Linux?

https://github.com/llvm/llvm-project/pull/164462
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