From baf1444929f4592aa36711cda6700a937e6c4613 Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek@google.com>
Date: Fri, 10 Sep 2021 00:07:07 -0700
Subject: [PATCH] [CMake] Use NOT instead of STREQUAL

`<var> STREQUAL ""` fails when `<var>` is unset which can be the
case when using runtimes as top-level build. Use `NOT` instead.

Differential Revision: https://reviews.llvm.org/D109570
---
 runtimes/CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/runtimes/CMakeLists.txt b/runtimes/CMakeLists.txt
index e926c3c30f49..b88aa46c663d 100644
--- a/runtimes/CMakeLists.txt
+++ b/runtimes/CMakeLists.txt
@@ -61,7 +61,7 @@ endif()
 # If building standalone by pointing CMake at this runtimes directory,
 # LLVM_BINARY_DIR isn't set, find_package(LLVM) will fail and these
 # intermediate paths are unset.
-if (LLVM_BINARY_DIR STREQUAL "")
+if (NOT LLVM_BINARY_DIR)
   set(LLVM_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
 endif()
 if (NOT LLVM_FOUND)