>>> libwebsockets 4.3.1 Extracting
gzip -d -c /home/buildroot/autobuild/instance-3/dl/libwebsockets/libwebsockets-4.3.1.tar.gz | tar --strip-components=1 -C /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1   -xf -
>>> libwebsockets 4.3.1 Patching
>>> libwebsockets 4.3.1 Configuring
(mkdir -p /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/ && cd /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/ && rm -f CMakeCache.txt && PATH="/home/buildroot/autobuild/instance-3/output-1/host/bin:/home/buildroot/autobuild/instance-3/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"  /home/buildroot/autobuild/instance-3/output-1/host/bin/cmake /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/ -DCMAKE_TOOLCHAIN_FILE="/home/buildroot/autobuild/instance-3/output-1/host/share/buildroot/toolchainfile.cmake" -DCMAKE_INSTALL_PREFIX="/usr" -DCMAKE_COLOR_MAKEFILE=OFF -DBUILD_DOC=OFF -DBUILD_DOCS=OFF -DBUILD_EXAMPLE=OFF -DBUILD_EXAMPLES=OFF -DBUILD_TEST=OFF -DBUILD_TESTS=OFF -DBUILD_TESTING=OFF -DBUILD_SHARED_LIBS=ON  -DLWS_WITHOUT_TESTAPPS=ON -DLWS_IPV6=ON -DLWS_UNIX_SOCK=ON -DLWS_WITHOUT_EXTENSIONS=OFF -DLWS_MAX_SMP= -DLWS_WITH_SSL=ON -DLWS_WITH_LIBEV=ON -DLWS_WITH_LIBEVENT=OFF -DLWS_WITH_GLIB=OFF -DLWS_WITH_FSMOUNT=ON -DLWS_WITH_LIBUV=ON -DLWS_WITH_STATIC=OFF )
-- The C compiler identification is GNU 9.3.0
-- The CXX compiler identification is Clang 9.0.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++
-- Check for working CXX compiler: /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ - broken
CMake Error at /home/buildroot/autobuild/instance-3/output-1/host/share/cmake-3.18/Modules/CMakeTestCXXCompiler.cmake:59 (message):
  The C++ compiler

    "/home/buildroot/autobuild/instance-3/output-1/host/bin/clang++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/make cmTC_bea21/fast && make[1]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'
    /usr/bin/make  -f CMakeFiles/cmTC_bea21.dir/build.make CMakeFiles/cmTC_bea21.dir/build
    make[2]: Entering directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'
    Building CXX object CMakeFiles/cmTC_bea21.dir/testCXXCompiler.cxx.o
    /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot   -O3 -DNDEBUG -o CMakeFiles/cmTC_bea21.dir/testCXXCompiler.cxx.o -c /home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    clang-9: warning: unknown platform, assuming -mfloat-abi=soft
    clang-9: warning: unknown platform, assuming -mfloat-abi=soft
    Linking CXX executable cmTC_bea21
    /home/buildroot/autobuild/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_bea21.dir/link.txt --verbose=1
    /home/buildroot/autobuild/instance-3/output-1/host/bin/clang++ --sysroot=/home/buildroot/autobuild/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot -O3 -DNDEBUG CMakeFiles/cmTC_bea21.dir/testCXXCompiler.cxx.o -o cmTC_bea21 
    clang-9: warning: unknown platform, assuming -mfloat-abi=soft
    /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find crtbegin.o: No such file or directory
    /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lstdc++
    /home/buildroot/autobuild/instance-3/output-1/host/bin/arm-linux-ld: cannot find -lgcc
    clang-9: error: linker command failed with exit code 1 (use -v to see invocation)
    CMakeFiles/cmTC_bea21.dir/build.make:105: recipe for target 'cmTC_bea21' failed
    make[2]: *** [cmTC_bea21] Error 1
    make[2]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'
    Makefile:140: recipe for target 'cmTC_bea21/fast' failed
    make[1]: *** [cmTC_bea21/fast] Error 2
    make[1]: Leaving directory '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:66 (project)


-- Configuring incomplete, errors occurred!
See also "/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeOutput.log".
See also "/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeError.log".
package/pkg-generic.mk:272: recipe for target '/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/.stamp_configured' failed
make: *** [/home/buildroot/autobuild/instance-3/output-1/build/libwebsockets-4.3.1/.stamp_configured] Error 1
make: Leaving directory '/home/buildroot/autobuild/instance-3/buildroot'