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[CMake] Fix cache invalidation of LLVM_CXX_STD 

This cleans up fallout from https://reviews.llvm.org/D66195.

llvm-svn: 368897
This commit is contained in:
Chris Bieneman 2019-08-14 18:26:37 +00:00
parent ef56c7cdf0
commit a8e070366a
1 changed files with 4 additions and 1 deletions
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5
llvm/cmake/modules/HandleLLVMOptions.cmake
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@ -23,8 +23,11 @@ set(LLVM_CXX_STD_default "c++14")
if (LLVM_ENABLE_CXX1Z)
set(LLVM_CXX_STD_default "c++1z")
endif()
if (LLVM_CXX_STD STREQUAL "c++11")
set(LLVM_CXX_STD_force FORCE)
endif()
set(LLVM_CXX_STD ${LLVM_CXX_STD_default}
CACHE STRING "C++ standard to use for compilation.")
CACHE STRING "C++ standard to use for compilation." ${LLVM_CXX_STD_force})
set(LLVM_ENABLE_LTO OFF CACHE STRING "Build LLVM with LTO. May be specified as Thin or Full to use a particular kind of LTO")
string(TOUPPER "${LLVM_ENABLE_LTO}" uppercase_LLVM_ENABLE_LTO)