[PATCH] D136573: [llvm] [cmake] Silence GNUInstallDirs warning in LLVMInstallSymlink

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

How to do a standalone build? The lld standalone build is not documented.

  % cmake -GNinja -Sllvm -B/tmp/out/custom-llvm custom-llvm -DLLVM_ENABLE_PROJECTS=llvm -DCMAKE_INSTALL_PREFIX=/tmp/opt/llvm
  % ninja install
  % cmake -GNinja -Slld -B/tmp/out/lld -DLLVM_BUILD_MAIN_SRC_DIR=/tmp/out/custom-llvm/lib/cmake/llvm -DLLVM_DIR=/tmp/out/custom-llvm/lib/cmake/llvm -DLLVM_INCLUDE_TESTS=off
  -- Building with -fPIC
  -- LLD version: 16.0.0
  -- Configuring done
  CMake Error at /tmp/out/custom-llvm/lib/cmake/llvm/AddLLVM.cmake:958 (add_executable):
    Cannot find source file:
  
      /tmp/out/lld/tools/lld/lld-driver.cpp
  
    Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm .h
    .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90 .f95 .f03 .hip .ispc
  Call Stack (most recent call first):
    cmake/modules/AddLLD.cmake:35 (add_llvm_executable)
    cmake/modules/AddLLD.cmake:44 (add_lld_executable)
    tools/lld/CMakeLists.txt:5 (add_lld_tool)
  
  
  CMake Error at /tmp/out/custom-llvm/lib/cmake/llvm/AddLLVM.cmake:958 (add_executable):
    No SOURCES given to target: lld
  Call Stack (most recent call first):
    cmake/modules/AddLLD.cmake:35 (add_llvm_executable)
    cmake/modules/AddLLD.cmake:44 (add_lld_executable)
    tools/lld/CMakeLists.txt:5 (add_lld_tool)
  
  
  CMake Generate step failed.  Build files cannot be regenerated correctly.


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