[llvm] [llvm] Disable some LLVM arguments in runtimes mode (PR #73031)

[Joseph Huber via llvm-commits]

https://github.com/jhuber6 updated https://github.com/llvm/llvm-project/pull/73031

>From d4a872911989b02c9d5bee92161b6d480d31ed5a Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Tue, 21 Nov 2023 14:06:38 -0600
Subject: [PATCH] [llvm] Disable some LLVM arguments in runtimes mode

Summary:
There are a few default options that LLVM adds that can be problematic
for runtimes builds. These options are generally intended to handle
building LLVM itself, but are also added when building in a runtimes
mode. One such issue I've run into is that in `libc` we deliberately use
`--target` to use a different device toolchain, which doesn't support
some linker arguments passed via `-Wl`. This is observed in
https://github.com/llvm/llvm-project/pull/73030 when attempting to use
these options.
---
 runtimes/CMakeLists.txt | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/runtimes/CMakeLists.txt b/runtimes/CMakeLists.txt
index 010ec879e44a322..d2ed041c8b754d4 100644
--- a/runtimes/CMakeLists.txt
+++ b/runtimes/CMakeLists.txt
@@ -151,9 +151,11 @@ endif()
 # Avoid checking whether the compiler is working.
 set(LLVM_COMPILER_CHECKED ON)
 
+# This can be used to detect whether we're in the runtimes build.
+set(LLVM_RUNTIMES_BUILD ON)
+
 # Handle common options used by all runtimes.
 include(AddLLVM)
-include(HandleLLVMOptions)
 
 find_package(Python3 REQUIRED COMPONENTS Interpreter)
 
@@ -179,9 +181,6 @@ if(CMAKE_HOST_APPLE AND APPLE)
   include(UseLibtool)
 endif()
 
-# This can be used to detect whether we're in the runtimes build.
-set(LLVM_RUNTIMES_BUILD ON)
-
 foreach(entry ${runtimes})
   get_filename_component(projName ${entry} NAME)