Applying ./patches/010-ssp.patch using plaintext: 
patching file CMakeLists.txt
-- The CXX compiler identification is GNU 8.4.0
-- The C compiler identification is GNU 8.4.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_mpcore+vfp_gcc-8.4.0_musl_eabi/bin/arm-openwrt-linux-muslgnueabi-g++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_mpcore+vfp_gcc-8.4.0_musl_eabi/bin/arm-openwrt-linux-muslgnueabi-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Configuring for standalone build.
CMake Warning at cmake/Modules/HandleOutOfTreeLLVM.cmake:60 (message):
  UNSUPPORTED LIBCXX CONFIGURATION DETECTED: llvm-config not found and
  LLVM_PATH not defined.

  Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config or
  -DLLVM_PATH=path/to/llvm-source-root.
Call Stack (most recent call first):
  cmake/Modules/HandleOutOfTreeLLVM.cmake:84 (find_llvm_parts)
  cmake/Modules/HandleOutOfTreeLLVM.cmake:142 (configure_out_of_tree_llvm)
  CMakeLists.txt:35 (include)


-- Found PythonInterp: /builder/shared-workdir/build/sdk/staging_dir/host/bin/python (found version "3.5.3") 
-- Looking for fopen in c
-- Looking for fopen in c - found
-- Looking for __gcc_personality_v0 in gcc_s
-- Looking for __gcc_personality_v0 in gcc_s - found
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG - Success
-- Performing Test LIBCXX_HAVE_CXX_ATOMICS_WITHOUT_LIB
-- Performing Test LIBCXX_HAVE_CXX_ATOMICS_WITHOUT_LIB - Success
-- Looking for __atomic_fetch_add_8 in atomic
-- Looking for __atomic_fetch_add_8 in atomic - found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Looking for ccos in m
-- Looking for ccos in m - found
-- Looking for clock_gettime in rt
-- Looking for clock_gettime in rt - found
CMake Warning at cmake/Modules/HandleLibCXXABI.cmake:72 (message):
  Failed to find cxxabi.h
Call Stack (most recent call first):
  cmake/Modules/HandleLibCXXABI.cmake:115 (setup_abi_lib)
  CMakeLists.txt:500 (include)


CMake Warning at cmake/Modules/HandleLibCXXABI.cmake:72 (message):
  Failed to find __cxxabi_config.h
Call Stack (most recent call first):
  cmake/Modules/HandleLibCXXABI.cmake:115 (setup_abi_lib)
  CMakeLists.txt:500 (include)


-- Performing Test LIBCXX_SUPPORTS_NOSTDINCXX_FLAG
-- Performing Test LIBCXX_SUPPORTS_NOSTDINCXX_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG
-- Performing Test LIBCXX_SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WALL_FLAG
-- Performing Test LIBCXX_SUPPORTS_WALL_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_FLAG
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_W_FLAG
-- Performing Test LIBCXX_SUPPORTS_W_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WWRITE_STRINGS_FLAG
-- Performing Test LIBCXX_SUPPORTS_WWRITE_STRINGS_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_UNUSED_PARAMETER_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_UNUSED_PARAMETER_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_LONG_LONG_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_LONG_LONG_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WERROR_EQ_RETURN_TYPE_FLAG
-- Performing Test LIBCXX_SUPPORTS_WERROR_EQ_RETURN_TYPE_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_SEMI_FLAG
-- Performing Test LIBCXX_SUPPORTS_WEXTRA_SEMI_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_LITERAL_SUFFIX_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_LITERAL_SUFFIX_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_CXX14_COMPAT_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_CXX14_COMPAT_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_NOEXCEPT_TYPE_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_NOEXCEPT_TYPE_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_WNO_ERROR_FLAG
-- Performing Test LIBCXX_SUPPORTS_WNO_ERROR_FLAG - Success
-- Performing Test LIBCXX_SUPPORTS_EHSC_FLAG
-- Performing Test LIBCXX_SUPPORTS_EHSC_FLAG - Failed
-- Performing Test LIBCXX_SUPPORTS_ZL_FLAG
-- Performing Test LIBCXX_SUPPORTS_ZL_FLAG - Failed
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIB_FLAG
-- Performing Test LIBCXX_SUPPORTS_NODEFAULTLIB_FLAG - Failed
-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_ASM_COMPILER
    CMAKE_ASM_COMPILER_ARG1
    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    CMAKE_EXPORT_PACKAGE_REGISTRY
    CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY
    CMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY
    CMAKE_FIND_ROOT_PATH_MODE_LIBRARY
    CMAKE_FIND_USE_PACKAGE_REGISTRY
    CMAKE_FIND_USE_SYSTEM_PACKAGE_REGISTRY
    CMAKE_MODULE_LINKER_FLAGS
    DL_LIBRARY


-- Build files have been written to: /builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build
make[4]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
make[5]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
make[6]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
Scanning dependencies of target cxx_abi_headers
make[6]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
[  0%] Built target cxx_abi_headers
make[6]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
Scanning dependencies of target cxx-generated-config
make[6]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
make[6]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
[  1%] Generating ../__generated_config
make[6]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
[  1%] Built target cxx-generated-config
make[6]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
Scanning dependencies of target cxx_static
make[6]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
make[6]: Entering directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
[  2%] Building CXX object src/CMakeFiles/cxx_static.dir/algorithm.cpp.o
[  4%] Building CXX object src/CMakeFiles/cxx_static.dir/any.cpp.o
[  5%] Building CXX object src/CMakeFiles/cxx_static.dir/bind.cpp.o
[  6%] Building CXX object src/CMakeFiles/cxx_static.dir/charconv.cpp.o
[  8%] Building CXX object src/CMakeFiles/cxx_static.dir/chrono.cpp.o
[  9%] Building CXX object src/CMakeFiles/cxx_static.dir/condition_variable.cpp.o
[ 10%] Building CXX object src/CMakeFiles/cxx_static.dir/condition_variable_destructor.cpp.o
[ 12%] Building CXX object src/CMakeFiles/cxx_static.dir/debug.cpp.o
[ 13%] Building CXX object src/CMakeFiles/cxx_static.dir/exception.cpp.o
/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/src/exception.cpp:14:12: fatal error: cxxabi.h: No such file or directory
   #include <cxxabi.h>
            ^~~~~~~~~~
compilation terminated.
src/CMakeFiles/cxx_static.dir/build.make:185: recipe for target 'src/CMakeFiles/cxx_static.dir/exception.cpp.o' failed
make[6]: *** [src/CMakeFiles/cxx_static.dir/exception.cpp.o] Error 1
make[6]: *** Waiting for unfinished jobs....
make[6]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
CMakeFiles/Makefile2:414: recipe for target 'src/CMakeFiles/cxx_static.dir/all' failed
make[5]: *** [src/CMakeFiles/cxx_static.dir/all] Error 2
make[5]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
Makefile:148: recipe for target 'all' failed
make[4]: *** [all] Error 2
make[4]: Leaving directory '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/build'
Makefile:66: recipe for target '/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/.built' failed
make[3]: *** [/builder/shared-workdir/build/sdk/build_dir/target-arm_mpcore+vfp_musl_eabi/libcxx-10.0.0.src/.built] Error 2
time: package/feeds/base/libcxx/compile#11.46#3.53#17.30