r350361 - [cmake] Fix monorepo + LLVM_BUILD_EXTERNAL_COMPILER_RT=ON.

[Evgeniy Stepanov via cfe-commits]

Author: eugenis
Date: Thu Jan  3 14:41:10 2019
New Revision: 350361

URL: http://llvm.org/viewvc/llvm-project?rev=350361&view=rev
Log:
[cmake] Fix monorepo + LLVM_BUILD_EXTERNAL_COMPILER_RT=ON.

In cmake 3.10.2, if (${VARIABLE_NAME}) seems to always be false no
matter what documentation says (or maybe I just failed at reading).

Anyway, if (VARIABLE_NAME) seems to do what this code intended.

Modified:
    cfe/trunk/runtime/CMakeLists.txt

Modified: cfe/trunk/runtime/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/runtime/CMakeLists.txt?rev=350361&r1=350360&r2=350361&view=diff
==============================================================================
--- cfe/trunk/runtime/CMakeLists.txt (original)
+++ cfe/trunk/runtime/CMakeLists.txt Thu Jan  3 14:41:10 2019
@@ -28,7 +28,7 @@ set(COMPILER_RT_SRC_ROOT ${LLVM_MAIN_SRC
 # variable) as in add_llvm_external_project
 if(NOT EXISTS ${COMPILER_RT_SRC_ROOT})
   # We don't want to set it if LLVM_EXTERNAL_COMPILER_RT_SOURCE_DIR is ""
-  if(${LLVM_EXTERNAL_COMPILER_RT_SOURCE_DIR})
+  if(LLVM_EXTERNAL_COMPILER_RT_SOURCE_DIR)
     set(COMPILER_RT_SRC_ROOT ${LLVM_EXTERNAL_COMPILER_RT_SOURCE_DIR})
   endif()
 endif()