'"uses of target_link_libraries must be either all-keyword or all-plain"

I managed to build llvm and clang and now I am trying to create a ClangTool according to clang docs. But I am getting the following error when I am trying to build it:

CMake Error at tools/clang/tools/loop-convert/CMakeLists.txt:6 (target_link_libraries):
  The keyword signature for target_link_libraries has already been used with 
  the target "loop-convert".  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)

My current CMakeLists.txt is:

set(LLVM_LINK_COMPONENTS support)

add_clang_executable(loop-convert
  LoopConvert.cpp
)

target_link_libraries(loop-convert
  clangTooling
  clangBasic
  clangASTMatchers
)
c++cmakeclangllvm


Solution 1:[1]

If you can't migrate all calls to target_link_libraries to the new keyword-based signature, you can work around the pedantic error with:

function(target_link_libraries target)
    if(ARGV1 MATCHES "^(PRIVATE|PUBLIC|INTERFACE)$")
        _target_link_libraries(${target} ${ARGN})
    else()
        _target_link_libraries(${target} PUBLIC ${ARGN})
    endif()
endfunction()

This makes the function backward-compatible, while still allowing the newer signature to be used. IMHO, this should have be been CMake's default behavior.

Sources

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Source: Stack Overflow

Solution Source
Solution 1

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