Question

如何构建LLVM 7.0.2的Google fork（https://android.googlesource.com/toolchain/llvm，1d739ffb0366421d383e04ff80ec2ee591315116）？构建原始LLVM没有问题。但是运行配置步骤cmake <path/to/llvm/source/root>会产生很多类似的错误：

...
-- Targeting XCore
-- Clang version: 7.0.0
-- Performing Test CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG
-- Performing Test CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG - Failed
CMake Error at tools/clang/tools/diagtool/CMakeLists.txt:14 (target_link_libraries):
  The keyword signature for target_link_libraries has already been used with
  the target "diagtool".  All uses of target_link_libraries with a target
  must be either all-keyword or all-plain.

  The uses of the keyword signature are here:

   * cmake/modules/LLVM-Config.cmake:105 (target_link_libraries)
   * cmake/modules/AddLLVM.cmake:771 (target_link_libraries)



CMake Error at tools/clang/tools/driver/CMakeLists.txt:33 (target_link_libraries):
  The keyword signature for target_link_libraries has already been used with
  the target "clang".  All uses of target_link_libraries with a target must
  be either all-keyword or all-plain.

  The uses of the keyword signature are here:

   * cmake/modules/LLVM-Config.cmake:105 (target_link_libraries)
   * cmake/modules/AddLLVM.cmake:771 (target_link_libraries)



CMake Error at tools/clang/tools/clang-format/CMakeLists.txt:14 (target_link_libraries):
  The keyword signature for target_link_libraries has already been used with
  the target "clang-format".  All uses of target_link_libraries with a target
  must be either all-keyword or all-plain.

  The uses of the keyword signature are here:

   * cmake/modules/LLVM-Config.cmake:105 (target_link_libraries)
   * cmake/modules/AddLLVM.cmake:771 (target_link_libraries)
 ...

我在Linux Mint 18.2 x86_64计算机上。

编辑：如果我跳过“工具”和“测试”，那么它将起作用。像这样：cmake -G Ninja -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_TOOLS=OFF <src>。尽管使用ninja进行构建由于类似的原因而失败，即使我指定了标志也跳过了构建（而不仅仅是配置）“工具”和“测试”，它仍然尝试构建它们：（

Answer 1

解决了这个问题。检出的代码实际上包含指向与LLVM源相同级别的目录的链接（tools / clang-> ../../clang）。我从以前的一些测试中获得了现有的clang目录，该目录与Google LLVM 7.0.2不兼容。因此，我删除了该目录并下载了相应的clang版本，该版本修复了错误。

构建Google LLVM 7.0.2

1 个答案: