-- The CXX compiler identification is Clang 13.0.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /usr/bin/clang++
-- Check for working CXX compiler: /usr/bin/clang++ - broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCXXCompiler.cmake:62 (message):
  The C++ compiler

    "/usr/bin/clang++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /build/ccls/src/ccls-0.20210330/build/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/make -f Makefile cmTC_a9ad1/fast && /usr/bin/make  -f CMakeFiles/cmTC_a9ad1.dir/build.make CMakeFiles/cmTC_a9ad1.dir/build
    make[1]: Entering directory '/build/ccls/src/ccls-0.20210330/build/CMakeFiles/CMakeTmp'
    Building CXX object CMakeFiles/cmTC_a9ad1.dir/testCXXCompiler.cxx.o
    /usr/bin/clang++   -march=rv64gc -mabi=lp64d -O2 -pipe -fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security         -fstack-clash-protection -Wp,-D_GLIBCXX_ASSERTIONS -flto  -MD -MT CMakeFiles/cmTC_a9ad1.dir/testCXXCompiler.cxx.o -MF CMakeFiles/cmTC_a9ad1.dir/testCXXCompiler.cxx.o.d -o CMakeFiles/cmTC_a9ad1.dir/testCXXCompiler.cxx.o -c /build/ccls/src/ccls-0.20210330/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    clang-13: warning: argument unused during compilation: '-fstack-clash-protection' [-Wunused-command-line-argument]
    Linking CXX executable cmTC_a9ad1
    /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_a9ad1.dir/link.txt --verbose=1
    /usr/bin/clang++ -march=rv64gc -mabi=lp64d -O2 -pipe -fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security         -fstack-clash-protection -Wp,-D_GLIBCXX_ASSERTIONS -flto  -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now -flto  CMakeFiles/cmTC_a9ad1.dir/testCXXCompiler.cxx.o -o cmTC_a9ad1 
    /usr/bin/ld: /tmp/lto-llvm-8a77e7.o: can't link soft-float modules with double-float modules
    /usr/bin/ld: failed to merge target specific data of file /tmp/lto-llvm-8a77e7.o
    clang-13: error: linker command failed with exit code 1 (use -v to see invocation)
    make[1]: *** [CMakeFiles/cmTC_a9ad1.dir/build.make:100: cmTC_a9ad1] Error 1
    make[1]: Leaving directory '/build/ccls/src/ccls-0.20210330/build/CMakeFiles/CMakeTmp'
    make: *** [Makefile:127: cmTC_a9ad1/fast] Error 2
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- Configuring incomplete, errors occurred!
See also "/build/ccls/src/ccls-0.20210330/build/CMakeFiles/CMakeOutput.log".
See also "/build/ccls/src/ccls-0.20210330/build/CMakeFiles/CMakeError.log".
==> ERROR: A failure occurred in build().
    Aborting...