From 78550e3991c2aba525e201dbc4bfb437e6777d56 Mon Sep 17 00:00:00 2001
From: Hongbin Zheng <etherzhhb@gmail.com>
Date: Fri, 7 Oct 2016 21:32:47 +0000
Subject: [PATCH] [cmake] Treat polly as "in tree" if
 LLVM_EXTERNAL_POLLY_SOURCE_DIR is provided

Differential Revision: https://reviews.llvm.org/D25354

llvm-svn: 283608
---
 llvm/CMakeLists.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index 85d4b51e00b5..4d4aa9f69f99 100644
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -395,6 +395,8 @@ option(LLVM_POLLY_BUILD "Build LLVM with Polly" ON)
 
 if (EXISTS ${LLVM_MAIN_SRC_DIR}/tools/polly/CMakeLists.txt)
   set(POLLY_IN_TREE TRUE)
+elseif(LLVM_EXTERNAL_POLLY_SOURCE_DIR)
+  set(POLLY_IN_TREE TRUE)
 else()
   set(POLLY_IN_TREE FALSE)
 endif()