diff options
Diffstat (limited to 'llvm/cmake/modules/AddLLVM.cmake')
| -rw-r--r-- | llvm/cmake/modules/AddLLVM.cmake | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake index f87e18bfcff..f4cb93ded59 100644 --- a/llvm/cmake/modules/AddLLVM.cmake +++ b/llvm/cmake/modules/AddLLVM.cmake @@ -717,6 +717,23 @@ macro(add_llvm_tool_subdirectory name) add_llvm_external_project(${name}) endmacro(add_llvm_tool_subdirectory) +# Finds a (potentially external) project that normally lives at +# llvm/${subdir}/${name}. For example, to find clang: +# find_llvm_external_project(tools clang CLANG_SRC) +# Returns nothing if the project is not configured to build. +function(find_llvm_external_project subdir name path_out) + canonicalize_tool_name(${name} nameUPPER) + if (NOT LLVM_TOOL_${nameUPPER}_BUILD) + set(${path_out} PARENT_SCOPE) + elseif (EXISTS LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR) + set(${path_out} LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR PARENT_SCOPE) + elseif (EXISTS ${LLVM_MAIN_SRC_DIR}/${subdir}/${name}) + set(${path_out} ${LLVM_MAIN_SRC_DIR}/${subdir}/${name} PARENT_SCOPE) + else() + set(${path_out} PARENT_SCOPE) + endif() +endfunction(find_llvm_external_project) + function(get_project_name_from_src_var var output) string(REGEX MATCH "LLVM_EXTERNAL_(.*)_SOURCE_DIR" MACHED_TOOL "${var}") |
