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Summary: r319898 made it possible to override these variables via the CROSS_TOOLCHAIN_FLAGS setting, but this only worked if one explicitly specifies these variables there. If, instead, one uses CROSS_TOOLCHAIN_FLAGS to specify a toolchain file (as our internal builds do, to point cmake to a checked-in toolchain), the CMAKE_C(XX)_COMPILER flags would still win over the ones specified by the toolchain file. To fix is to make the mere presence of these flags overridable. I do this by putting them as a default value for the CROSS_TOOLCHAIN_FLAGS setting, so they can be overridden at cmake configuration time. Reviewers: hintonda, beanz Subscribers: bogner, llvm-commits, mgorny Differential Revision: https://reviews.llvm.org/D40947 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320138 91177308-0d34-0410-b5e6-96231b3b80d8
See docs/CMake.html for instructions on how to build LLVM with CMake.