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      1 # This file sets up a CMakeCache for a simple distribution bootstrap build.
      2 
      3 #Enable LLVM projects and runtimes
      4 set(LLVM_ENABLE_PROJECTS "clang;clang-tools-extra;lld" CACHE STRING "")
      5 set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi" CACHE STRING "")
      6 
      7 # Only build the native target in stage1 since it is a throwaway build.
      8 set(LLVM_TARGETS_TO_BUILD Native CACHE STRING "")
      9 
     10 # Optimize the stage1 compiler, but don't LTO it because that wastes time.
     11 set(CMAKE_BUILD_TYPE Release CACHE STRING "")
     12 
     13 # Setup vendor-specific settings.
     14 set(PACKAGE_VENDOR LLVM.org CACHE STRING "")
     15 
     16 # Setting up the stage2 LTO option needs to be done on the stage1 build so that
     17 # the proper LTO library dependencies can be connected.
     18 set(BOOTSTRAP_LLVM_ENABLE_LTO ON CACHE BOOL "")
     19 
     20 if (NOT APPLE)
     21   # Since LLVM_ENABLE_LTO is ON we need a LTO capable linker
     22   set(BOOTSTRAP_LLVM_ENABLE_LLD ON CACHE BOOL "")
     23 endif()
     24 
     25 # Expose stage2 targets through the stage1 build configuration.
     26 set(CLANG_BOOTSTRAP_TARGETS
     27   check-all
     28   check-llvm
     29   check-clang
     30   llvm-config
     31   test-suite
     32   test-depends
     33   llvm-test-depends
     34   clang-test-depends
     35   distribution
     36   install-distribution
     37   clang CACHE STRING "")
     38 
     39 # Setup the bootstrap build.
     40 set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
     41 
     42 if(STAGE2_CACHE_FILE)
     43   set(CLANG_BOOTSTRAP_CMAKE_ARGS
     44     -C ${STAGE2_CACHE_FILE}
     45     CACHE STRING "")
     46 else()
     47   set(CLANG_BOOTSTRAP_CMAKE_ARGS
     48     -C ${CMAKE_CURRENT_LIST_DIR}/DistributionExample-stage2.cmake
     49     CACHE STRING "")
     50 endif()
     51