>>> libwebsockets 4.3.1 Extracting
gzip -d -c /nvmedata/autobuild/instance-21/dl/libwebsockets/libwebsockets-4.3.1.tar.gz | /nvmedata/autobuild/instance-21/output-1/host/bin/tar --strip-components=1 -C /nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1   -xf -
>>> libwebsockets 4.3.1 Patching
>>> libwebsockets 4.3.1 Configuring
(mkdir -p /nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/ && cd /nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/ && rm -f CMakeCache.txt && PATH="/nvmedata/autobuild/instance-21/output-1/host/bin:/nvmedata/autobuild/instance-21/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"  /nvmedata/autobuild/instance-21/output-1/host/bin/cmake /nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/ -DCMAKE_TOOLCHAIN_FILE="/nvmedata/autobuild/instance-21/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=ON -DLWS_WITH_FSMOUNT=ON -DLWS_WITH_LIBUV=ON )
-- The C compiler identification is GNU 10.3.0
-- The CXX compiler identification is Clang 10.0.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /nvmedata/autobuild/instance-21/output-1/host/bin/x86_64-buildroot-linux-gnu-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: /usr/bin/clang++
-- Check for working CXX compiler: /usr/bin/clang++ - broken
CMake Error at /nvmedata/autobuild/instance-21/output-1/host/share/cmake-3.18/Modules/CMakeTestCXXCompiler.cmake:59 (message):
  The C++ compiler

    "/usr/bin/clang++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/make cmTC_8dd32/fast && make[1]: Entering directory '/nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'
    /usr/bin/make  -f CMakeFiles/cmTC_8dd32.dir/build.make CMakeFiles/cmTC_8dd32.dir/build
    make[2]: Entering directory '/nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'
    Building CXX object CMakeFiles/cmTC_8dd32.dir/testCXXCompiler.cxx.o
    /usr/bin/clang++ --sysroot=/nvmedata/autobuild/instance-21/output-1/host/x86_64-buildroot-linux-gnu/sysroot   -O3 -DNDEBUG -o CMakeFiles/cmTC_8dd32.dir/testCXXCompiler.cxx.o -c /nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    Linking CXX executable cmTC_8dd32
    /nvmedata/autobuild/instance-21/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_8dd32.dir/link.txt --verbose=1
    /usr/bin/clang++ --sysroot=/nvmedata/autobuild/instance-21/output-1/host/x86_64-buildroot-linux-gnu/sysroot -O3 -DNDEBUG CMakeFiles/cmTC_8dd32.dir/testCXXCompiler.cxx.o -o cmTC_8dd32 
    /usr/bin/ld: cannot find -lstdc++
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    make[2]: *** [CMakeFiles/cmTC_8dd32.dir/build.make:106: cmTC_8dd32] Error 1
    make[2]: Leaving directory '/nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeTmp'
    make[1]: *** [Makefile:140: cmTC_8dd32/fast] Error 2
    make[1]: Leaving directory '/nvmedata/autobuild/instance-21/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 "/nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeOutput.log".
See also "/nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/CMakeFiles/CMakeError.log".
make: *** [package/pkg-generic.mk:282: /nvmedata/autobuild/instance-21/output-1/build/libwebsockets-4.3.1/.stamp_configured] Error 1
make: Leaving directory '/nvmedata/autobuild/instance-21/buildroot'