[llvm] r346377 - [cmake] Set CMP0075 to NEW

[Shoaib Meenai via llvm-commits]

Author: smeenai
Date: Wed Nov  7 16:18:12 2018
New Revision: 346377

URL: http://llvm.org/viewvc/llvm-project?rev=346377&view=rev
Log:
[cmake] Set CMP0075 to NEW

Make the check_include_file* macros honor CMAKE_REQUIRED_LIBRARIES. This
shouldn't cause any of the configuration checks to give different
results (and I did clean configures before and after this change and
confirmed that the resulting CMake caches were identical, though of
course that's just one machine). This suppresses a warning when building
with CMake 3.12 or later.

This doesn't suppress the warning in clang, because clang does its own
cmake_minimum_required call even when being built in-tree, and that
resets all policy settings. I'll address that separately.

Differential Revision: https://reviews.llvm.org/D54236

Modified:
    llvm/trunk/CMakeLists.txt

Modified: llvm/trunk/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/CMakeLists.txt?rev=346377&r1=346376&r2=346377&view=diff
==============================================================================
--- llvm/trunk/CMakeLists.txt (original)
+++ llvm/trunk/CMakeLists.txt Wed Nov  7 16:18:12 2018
@@ -7,6 +7,10 @@ if(POLICY CMP0068)
   set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
 endif()
 
+if(POLICY CMP0075)
+  cmake_policy(SET CMP0075 NEW)
+endif()
+
 if(NOT DEFINED LLVM_VERSION_MAJOR)
   set(LLVM_VERSION_MAJOR 8)
 endif()