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| author | Reid Kleckner <rnk@google.com> | 2015-08-11 17:16:35 +0000 |
|---|---|---|
| committer | Reid Kleckner <rnk@google.com> | 2015-08-11 17:16:35 +0000 |
| commit | de98228fab8547e09cfec4e5f3ce2868997fa7e0 (patch) | |
| tree | d637fa04e4059a2fba5e8db737934ab00d4b7d7f /llvm/cmake/modules/AddLLVM.cmake | |
| parent | ae1b23bd6160abbde8ea11ba3548a3bc9e9f7953 (diff) | |
| download | bcm5719-llvm-de98228fab8547e09cfec4e5f3ce2868997fa7e0.tar.gz bcm5719-llvm-de98228fab8547e09cfec4e5f3ce2868997fa7e0.zip | |
[cmake] Add helper for finding potentially external projects
I plan to use this from compiler-rt, but it's useful for any LLVM
project that depends on more than just LLVM.
llvm-svn: 244633
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}") |
