It is possible to build LLVM with just the "llvm" and "cmake" components
checked out. This requires disabling the `LLVM_INCLUDE_BENCHMARKS` and
`LLVM_INCLUDE_TESTS` options. These options are not passed through to
the native build when cross-compiling though, so the build will break if
the "third-party" component is missing. We don't need the benchmarks or
tests for the native build, so disable these unconditionally. This fixes
cross-compiling on Gentoo, where only the required components are
checked out.
Differential Revision: https://reviews.llvm.org/D141196
-DLLVM_ENABLE_RUNTIMES="${llvm_enable_runtimes_arg}"
${external_project_source_dirs}
-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN="${LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN}"
+ -DLLVM_INCLUDE_BENCHMARKS=OFF
+ -DLLVM_INCLUDE_TESTS=OFF
${build_type_flags} ${linker_flag} ${external_clang_dir}
${ARGN}
WORKING_DIRECTORY ${${project_name}_${target_name}_BUILD}