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Fix build failure with cmake version bump 

llvm-svn: 271582
This commit is contained in:
Xinliang David Li 2016-06-02 20:33:33 +00:00
parent 47a3ec1921
commit 2baff11d05
1 changed files with 10 additions and 0 deletions
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10
compiler-rt/CMakeLists.txt
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@ -16,6 +16,16 @@ else()
endif()
cmake_minimum_required(VERSION 3.4.3)
# FIXME:
# The OLD behavior (pre 3.2) for this policy is to not set the value of the
# CMAKE_EXE_LINKER_FLAGS variable in the generated test project. The NEW behavior
# for this policy is to set the value of the CMAKE_EXE_LINKER_FLAGS variable
# in the test project to the same as it is in the calling project. The new
# behavior cause the compiler_rt test to fail during try_compile: see
# projects/compiler-rt/cmake/Modules/CompilerRTUtils.cmake:121 such that
# CAN_TARGET_${arch} is not set properly. This results in COMPILER_RT_SUPPORTED_ARCH
# not being updated properly leading to poblems.
cmake_policy(SET CMP0056 OLD)
# FIXME: It may be removed when we use 2.8.12.
if(CMAKE_VERSION VERSION_LESS 2.8.12)