From 2a452ebf76833379f8217531b5027457e11d9dd5 Mon Sep 17 00:00:00 2001
From: Petr Hosek <phosek@chromium.org>
Date: Mon, 12 Dec 2016 05:05:46 +0000
Subject: [libcxx][CMake] Move the warning to HandleOutOfTreeLLVM

This currently gives a warning when building libcxx under runtimes.

Differential Revision: https://reviews.llvm.org/D27643

llvm-svn: 289418
---
 libcxx/cmake/Modules/HandleOutOfTreeLLVM.cmake | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'libcxx/cmake/Modules')

diff --git a/libcxx/cmake/Modules/HandleOutOfTreeLLVM.cmake b/libcxx/cmake/Modules/HandleOutOfTreeLLVM.cmake
index 599d8a1d4b2..c772143244a 100644
--- a/libcxx/cmake/Modules/HandleOutOfTreeLLVM.cmake
+++ b/libcxx/cmake/Modules/HandleOutOfTreeLLVM.cmake
@@ -41,6 +41,10 @@ macro(find_llvm_parts)
     set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
   else()
     set(LLVM_FOUND OFF)
+    message(WARNING "UNSUPPORTED LIBCXX CONFIGURATION DETECTED: "
+                    "llvm-config not found and LLVM_PATH not defined.\n"
+                    "Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config "
+                    "or -DLLVM_PATH=path/to/llvm-source-root.")
     return()
   endif()
 
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