>>> log4cxx 0.12.0 Extracting
mkdir -p /tmp/instance-1/output-1/per-package/log4cxx/host
mkdir -p /tmp/instance-1/output-1/per-package/log4cxx/target
gzip -d -c /tmp/instance-1/dl/log4cxx/apache-log4cxx-0.12.0.tar.gz | tar --strip-components=1 -C /tmp/instance-1/output-1/build/log4cxx-0.12.0   -xf -
>>> log4cxx 0.12.0 Patching
>>> log4cxx 0.12.0 Configuring
mkdir -p /tmp/instance-1/output-1/per-package/log4cxx/host
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/apr/host/ /tmp/instance-1/output-1/per-package/apr/host/ /tmp/instance-1/output-1/per-package/log4cxx/host
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/apr-util/host/ /tmp/instance-1/output-1/per-package/apr-util/host/ /tmp/instance-1/output-1/per-package/log4cxx/host
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/host-pkgconf/host/ /tmp/instance-1/output-1/per-package/host-pkgconf/host/ /tmp/instance-1/output-1/per-package/log4cxx/host
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/host-skeleton/host/ /tmp/instance-1/output-1/per-package/host-skeleton/host/ /tmp/instance-1/output-1/per-package/log4cxx/host
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/skeleton/host/ /tmp/instance-1/output-1/per-package/skeleton/host/ /tmp/instance-1/output-1/per-package/log4cxx/host
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/toolchain/host/ /tmp/instance-1/output-1/per-package/toolchain/host/ /tmp/instance-1/output-1/per-package/log4cxx/host
mkdir -p /tmp/instance-1/output-1/per-package/log4cxx/target
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/apr/target/ /tmp/instance-1/output-1/per-package/apr/target/ /tmp/instance-1/output-1/per-package/log4cxx/target
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/apr-util/target/ /tmp/instance-1/output-1/per-package/apr-util/target/ /tmp/instance-1/output-1/per-package/log4cxx/target
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/host-pkgconf/target/ /tmp/instance-1/output-1/per-package/host-pkgconf/target/ /tmp/instance-1/output-1/per-package/log4cxx/target
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/host-skeleton/target/ /tmp/instance-1/output-1/per-package/host-skeleton/target/ /tmp/instance-1/output-1/per-package/log4cxx/target
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/skeleton/target/ /tmp/instance-1/output-1/per-package/skeleton/target/ /tmp/instance-1/output-1/per-package/log4cxx/target
rsync -a --link-dest=/tmp/instance-1/output-1/per-package/toolchain/target/ /tmp/instance-1/output-1/per-package/toolchain/target/ /tmp/instance-1/output-1/per-package/log4cxx/target
(mkdir -p /tmp/instance-1/output-1/build/log4cxx-0.12.0/ && cd /tmp/instance-1/output-1/build/log4cxx-0.12.0/ && rm -f CMakeCache.txt && PATH="/tmp/instance-1/output-1/per-package/log4cxx/host/bin:/tmp/instance-1/output-1/per-package/log4cxx/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"  /usr/bin/cmake /tmp/instance-1/output-1/build/log4cxx-0.12.0/ -DCMAKE_TOOLCHAIN_FILE="/tmp/instance-1/output-1/per-package/log4cxx/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  -DAPR_CONFIG_EXECUTABLE=/tmp/instance-1/output-1/per-package/log4cxx/host/arm-buildroot-linux-gnueabi/sysroot/usr/bin/apr-1-config -DAPR_UTIL_CONFIG_EXECUTABLE=/tmp/instance-1/output-1/per-package/log4cxx/host/arm-buildroot-linux-gnueabi/sysroot/usr/bin/apu-1-config )
-- The CXX compiler identification is GNU 4.8.3
-- Check for working CXX compiler: /tmp/instance-1/output-1/per-package/log4cxx/host/bin/arm-none-linux-gnueabi-g++
-- Check for working CXX compiler: /tmp/instance-1/output-1/per-package/log4cxx/host/bin/arm-none-linux-gnueabi-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found APR: -L/tmp/instance-1/output-1/per-package/log4cxx/host/arm-buildroot-linux-gnueabi/sysroot/usr/bin/../../usr/lib;-lapr-1  
-- Found APR-Util: -L/tmp/instance-1/output-1/per-package/log4cxx/host/arm-buildroot-linux-gnueabi/sysroot/usr/bin/../../usr/lib;-laprutil-1  
-- Looking for C++ include pthread.h
-- Looking for C++ include pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Found EXPAT: /tmp/instance-1/output-1/per-package/log4cxx/host/arm-buildroot-linux-gnueabi/sysroot/usr/lib/libexpat.so (found version "2.4.1") 
-- Found PkgConfig: /tmp/instance-1/output-1/per-package/log4cxx/host/bin/pkg-config (found version "1.6.3") 
-- Looking for C++ include locale
-- Looking for C++ include locale - found
-- Looking for mbsrtowcs
-- Looking for mbsrtowcs - found
-- Looking for wcstombs
-- Looking for wcstombs - found
-- Looking for fwide
-- Looking for fwide - found
-- Looking for smtp_create_session in esmtp
-- Looking for smtp_create_session in esmtp - not found
-- Looking for syslog
-- Looking for syslog - found
-- Could NOT find Boost (missing: Boost_INCLUDE_DIR thread) 
-- 
-- 
-- log4cxx configuration summary:
-- 
--   Build shared library ............ : ON
--   Build tests ..................... : OFF
--   Build site ...................... : OFF
--   Install prefix .................. : /usr
--   C++ compiler .................... : /tmp/instance-1/output-1/per-package/log4cxx/host/bin/arm-none-linux-gnueabi-g++
--   log4cxx char API ................ : utf-8
--   log4cxx wchar API ............... : ON
--   log4cxx unichar API ............. : OFF
--   logchar type .................... : utf-8
--   charset ......................... : locale
--   Using libESMTP .................. : OFF
--   ODBC library .................... : OFF
--   syslog .......................... : ON
--   Qt support ...................... : OFF
--   shared_mutex implementation ..... : 
-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    BUILD_DOC
    BUILD_DOCS
    BUILD_EXAMPLE
    BUILD_EXAMPLES
    BUILD_TEST
    BUILD_TESTS


-- Build files have been written to: /tmp/instance-1/output-1/build/log4cxx-0.12.0
>>> log4cxx 0.12.0 Building
PATH="/tmp/instance-1/output-1/per-package/log4cxx/host/bin:/tmp/instance-1/output-1/per-package/log4cxx/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"  /usr/bin/make -j32  -C /tmp/instance-1/output-1/build/log4cxx-0.12.0/
make[1]: Entering directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
make[2]: Entering directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
make[3]: Entering directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
Scanning dependencies of target configure_log4cxx
make[3]: Leaving directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
make[3]: Entering directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
Checking configuration
make[3]: Leaving directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
[  0%] Built target configure_log4cxx
make[3]: Entering directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
Scanning dependencies of target log4cxx
make[3]: Leaving directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
make[3]: Entering directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
[  1%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/andfilter.cpp.o
[  1%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/action.cpp.o
[  2%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/appenderattachableimpl.cpp.o
[  2%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/appenderskeleton.cpp.o
[  3%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/aprinitializer.cpp.o
[  4%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/asyncappender.cpp.o
[  4%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/basicconfigurator.cpp.o
[  5%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/bufferedwriter.cpp.o
[  6%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/bytearrayinputstream.cpp.o
[  6%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/bytearrayoutputstream.cpp.o
[  7%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/bytebuffer.cpp.o
[  8%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/cacheddateformat.cpp.o
[  8%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/charsetdecoder.cpp.o
[  9%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/charsetencoder.cpp.o
[ 10%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/class.cpp.o
[ 10%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/classnamepatternconverter.cpp.o
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp:18:0:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/action.h:51:3: error: 'mutex' in namespace 'std' does not name a type
   std::mutex mutex;
   ^
[ 11%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/classregistration.cpp.o
[ 12%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/configurator.cpp.o
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp: In member function 'void log4cxx::rolling::Action::run(log4cxx::helpers::Pool&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp:43:36: error: 'mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock(mutex);
                                    ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp:43:36: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp:19:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp: In member function 'void log4cxx::rolling::Action::close()':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp:66:36: error: 'mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock(mutex);
                                    ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp:66:36: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/action.cpp:19:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
[ 13%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/cyclicbuffer.cpp.o
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:63: src/main/cpp/CMakeFiles/log4cxx.dir/action.cpp.o] Error 1
make[3]: *** Waiting for unfinished jobs....
[ 13%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/consoleappender.cpp.o
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/filter.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/filter/andfilter.h:27,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/andfilter.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/filter.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/filter/andfilter.h:27,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/andfilter.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
[ 14%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/dailyrollingfileappender.cpp.o
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:18:0:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:20:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/filter.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/filter/andfilter.h:27,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/andfilter.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:76: src/main/cpp/CMakeFiles/log4cxx.dir/andfilter.cpp.o] Error 1
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:20:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/layout.h:29,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/asyncappender.h:27,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:22:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/layout.h:29,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/asyncappender.h:27,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:22:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:21:0:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/aprinitializer.h:61:3: error: 'mutex' in namespace 'std' does not name a type
   std::mutex mutex;
   ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggerfactory.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggerrepository.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/configurator.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/configurator.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggerfactory.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggerrepository.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/configurator.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/configurator.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/layout.h:29,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/asyncappender.h:27,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:22:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/asyncappender.h:27:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:22:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:77:11: error: 'shared_mutex' in namespace 'log4cxx' does not name a type
   mutable log4cxx::shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/file.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/filewatchdog.h:24,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:28:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/file.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/filewatchdog.h:24,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:28:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/layout.h:29,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/writerappender.h:26,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/consoleappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/consoleappender.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/layout.h:29,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/writerappender.h:26,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/consoleappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/consoleappender.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/loggingeventpatternconverter.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/namepatternconverter.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/classnamepatternconverter.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/classnamepatternconverter.cpp:23:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/loggingeventpatternconverter.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/namepatternconverter.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/classnamepatternconverter.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/classnamepatternconverter.cpp:23:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/basicconfigurator.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/basicconfigurator.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/basicconfigurator.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/basicconfigurator.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggerfactory.h:21:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggerrepository.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/configurator.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/configurator.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/cyclicbuffer.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/cyclicbuffer.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/cyclicbuffer.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/cyclicbuffer.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp: In member function 'virtual void log4cxx::AsyncAppender::doAppend(const LoggingEventPtr&, log4cxx::helpers::Pool&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:94:19: error: 'shared_mutex' is not a member of 'log4cxx'
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:94:19: error: 'shared_mutex' is not a member of 'log4cxx'
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:94:40: error: template argument 1 is invalid
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:94:46: error: invalid type in declaration before '(' token
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                              ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:94:47: error: 'mutex' was not declared in this scope
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                               ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:94:47: note: suggested alternative:
In file included from /tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/condition_variable:39:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/asyncappender.h:32,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:22:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp: In member function 'virtual void log4cxx::AsyncAppender::append(const LoggingEventPtr&, log4cxx::helpers::Pool&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:107:48: error: 'class log4cxx::helpers::AppenderAttachableImpl' has no member named 'getMutex'
   std::unique_lock<std::mutex> lock(appenders->getMutex());
                                                ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingfileappenderskeleton.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rollingfileappender.h:25,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/class.cpp:33:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingfileappenderskeleton.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rollingfileappender.h:25,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/class.cpp:33:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp: In member function 'virtual void log4cxx::AsyncAppender::close()':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/asyncappender.cpp:209:48: error: 'class log4cxx::helpers::AppenderAttachableImpl' has no member named 'getMutex'
   std::unique_lock<std::mutex> lock(appenders->getMutex());
                                                ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:284: src/main/cpp/CMakeFiles/log4cxx.dir/configurator.cpp.o] Error 1
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp: In member function 'virtual void log4cxx::helpers::AppenderAttachableImpl::addAppender(log4cxx::AppenderPtr)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:46:37: error: 'm_mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock( m_mutex );
                                     ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp: In member function 'int log4cxx::helpers::AppenderAttachableImpl::appendLoopOnAppenders(const LoggingEventPtr&, log4cxx::helpers::Pool&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:69:38: error: 'm_mutex' was not declared in this scope
   std::unique_lock<std::mutex> lock( m_mutex );
                                      ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp: In member function 'virtual log4cxx::AppenderPtr log4cxx::helpers::AppenderAttachableImpl::getAppender(const LogString&) const':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:95:37: error: 'm_mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock( m_mutex );
                                     ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp: In member function 'virtual bool log4cxx::helpers::AppenderAttachableImpl::isAttached(log4cxx::AppenderPtr) const':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:119:37: error: 'm_mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock( m_mutex );
                                     ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp: In member function 'virtual void log4cxx::helpers::AppenderAttachableImpl::removeAllAppenders()':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:128:37: error: 'm_mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock( m_mutex );
                                     ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp: In member function 'virtual void log4cxx::helpers::AppenderAttachableImpl::removeAppender(log4cxx::AppenderPtr)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:148:37: error: 'm_mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock( m_mutex );
                                     ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:19:0:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:77:11: error: 'shared_mutex' in namespace 'log4cxx' does not name a type
   mutable log4cxx::shared_mutex mutex;
           ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp: In member function 'virtual void log4cxx::helpers::AppenderAttachableImpl::removeAppender(const LogString&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderattachableimpl.cpp:165:37: error: 'm_mutex' was not declared in this scope
  std::unique_lock<std::mutex> lock( m_mutex );
                                     ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:20:0:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/loglog.h:50:3: error: 'mutex' in namespace 'std' does not name a type
   std::mutex mutex;
   ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/file.h:21:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/filewatchdog.h:24,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:28:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/layout.h:29,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/writerappender.h:26,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/consoleappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/consoleappender.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/basicconfigurator.h:22:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/basicconfigurator.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/loggingeventpatternconverter.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/namepatternconverter.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/pattern/classnamepatternconverter.h:22,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/classnamepatternconverter.cpp:23:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:30:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/dailyrollingfileappender.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/dailyrollingfileappender.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:108:10: error: 'mutex' in namespace 'std' does not name a type
   inline std::mutex& getMutex() const
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/appenderattachableimpl.h:114:11: error: 'mutex' in namespace 'std' does not name a type
   mutable std::mutex m_mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:31:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/dailyrollingfileappender.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/dailyrollingfileappender.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/level.h:283:10: error: 'mutex' in namespace 'std' does not name a type
   static std::mutex initMutex;
          ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp: In constructor 'log4cxx::AppenderSkeleton::AppenderSkeleton()':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:42:19: error: 'shared_mutex' is not a member of 'log4cxx'
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:42:19: error: 'shared_mutex' is not a member of 'log4cxx'
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:42:40: error: template argument 1 is invalid
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:42:46: error: invalid type in declaration before '(' token
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                              ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:42:47: error: 'mutex' was not declared in this scope
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                               ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:42:47: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp: In constructor 'log4cxx::AppenderSkeleton::AppenderSkeleton(const LayoutPtr&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:55:19: error: 'shared_mutex' is not a member of 'log4cxx'
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:55:19: error: 'shared_mutex' is not a member of 'log4cxx'
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:55:40: error: template argument 1 is invalid
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:55:46: error: invalid type in declaration before '(' token
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                              ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:55:47: error: 'mutex' was not declared in this scope
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                               ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:55:47: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp: In member function 'virtual void log4cxx::AppenderSkeleton::addFilter(const FilterPtr&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:73:19: error: 'shared_mutex' is not a member of 'log4cxx'
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:73:19: error: 'shared_mutex' is not a member of 'log4cxx'
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:73:40: error: template argument 1 is invalid
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:73:46: error: invalid type in declaration before '(' token
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                              ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:73:47: error: 'mutex' was not declared in this scope
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                               ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:73:47: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp: In member function 'virtual void log4cxx::AppenderSkeleton::clearFilters()':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:88:19: error: 'shared_mutex' is not a member of 'log4cxx'
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:88:19: error: 'shared_mutex' is not a member of 'log4cxx'
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:88:40: error: template argument 1 is invalid
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:88:46: error: invalid type in declaration before '(' token
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                              ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:88:47: error: 'mutex' was not declared in this scope
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                               ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:88:47: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp: In member function 'virtual void log4cxx::AppenderSkeleton::doAppend(const LoggingEventPtr&, log4cxx::helpers::Pool&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:99:2: error: 'shared_lock' is not a member of 'log4cxx'
  log4cxx::shared_lock<log4cxx::shared_mutex> lock(mutex);
  ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:99:23: error: 'shared_mutex' is not a member of 'log4cxx'
  log4cxx::shared_lock<log4cxx::shared_mutex> lock(mutex);
                       ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:99:51: error: 'mutex' was not declared in this scope
  log4cxx::shared_lock<log4cxx::shared_mutex> lock(mutex);
                                                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:99:51: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:99:56: error: 'lock' was not declared in this scope
  log4cxx::shared_lock<log4cxx::shared_mutex> lock(mutex);
                                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:99:56: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:708:5: note:   'std::lock'
     lock(_L1& __l1, _L2& __l2, _L3&... __l3)
     ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/writerappender.h:26:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/consoleappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/consoleappender.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:77:11: error: 'shared_mutex' in namespace 'log4cxx' does not name a type
   mutable log4cxx::shared_mutex mutex;
           ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp: In member function 'void log4cxx::AppenderSkeleton::setErrorHandler(log4cxx::spi::ErrorHandlerPtr)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:142:19: error: 'shared_mutex' is not a member of 'log4cxx'
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:142:19: error: 'shared_mutex' is not a member of 'log4cxx'
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:142:40: error: template argument 1 is invalid
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:142:46: error: invalid type in declaration before '(' token
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                              ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:142:47: error: 'mutex' was not declared in this scope
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                               ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:142:47: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp: In member function 'void log4cxx::AppenderSkeleton::setThreshold(const LevelPtr&)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:158:19: error: 'shared_mutex' is not a member of 'log4cxx'
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                   ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:158:19: error: 'shared_mutex' is not a member of 'log4cxx'
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:158:40: error: template argument 1 is invalid
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                        ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:158:46: error: invalid type in declaration before '(' token
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                              ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:158:47: error: 'mutex' was not declared in this scope
  std::unique_lock<log4cxx::shared_mutex> lock(mutex);
                                               ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:158:47: note: suggested alternative:
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/appenderskeleton.cpp:24:0:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/writerappender.h:26:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/consoleappender.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/basicconfigurator.cpp:20:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:77:11: error: 'shared_mutex' in namespace 'log4cxx' does not name a type
   mutable log4cxx::shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:21:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingfileappenderskeleton.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rollingfileappender.h:25,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/class.cpp:33:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp: In destructor 'log4cxx::helpers::APRInitializer::~APRInitializer()':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:61:37: error: 'mutex' was not declared in this scope
   std::unique_lock<std::mutex> lock(mutex);
                                     ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:61:37: note: suggested alternative:
In file included from /tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/condition_variable:39:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/filewatchdog.h:27,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:28:
/tmp/instance-1/output-1/per-package/log4cxx/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/mutex:117:9: note:   'std::mutex'
   class mutex : private __mutex_base
         ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp: In static member function 'static void log4cxx::helpers::APRInitializer::registerCleanup(log4cxx::helpers::FileWatchdog*)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:106:45: error: 'class log4cxx::helpers::APRInitializer' has no member named 'mutex'
  std::unique_lock<std::mutex> lock(instance.mutex);
                                             ^
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp: In static member function 'static void log4cxx::helpers::APRInitializer::unregisterCleanup(log4cxx::helpers::FileWatchdog*)':
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/aprinitializer.cpp:115:45: error: 'class log4cxx::helpers::APRInitializer' has no member named 'mutex'
  std::unique_lock<std::mutex> lock(instance.mutex);
                                             ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:89: src/main/cpp/CMakeFiles/log4cxx.dir/appenderattachableimpl.cpp.o] Error 1
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/consoleappender.cpp:19:0:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/loglog.h:50:3: error: 'mutex' in namespace 'std' does not name a type
   std::mutex mutex;
   ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/writerappender.h:26:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingfileappenderskeleton.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rollingfileappender.h:25,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/class.cpp:33:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:77:11: error: 'shared_mutex' in namespace 'log4cxx' does not name a type
   mutable log4cxx::shared_mutex mutex;
           ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:258: src/main/cpp/CMakeFiles/log4cxx.dir/classnamepatternconverter.cpp.o] Error 1
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:102: src/main/cpp/CMakeFiles/log4cxx.dir/appenderskeleton.cpp.o] Error 1
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/spi/loggingevent.h:28:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/cyclicbuffer.h:21,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/cyclicbuffer.cpp:18:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:115: src/main/cpp/CMakeFiles/log4cxx.dir/aprinitializer.cpp.o] Error 1
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:21:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/dailyrollingfileappender.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/dailyrollingfileappender.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/logger.h:1729:11: error: 'shared_mutex' does not name a type
   mutable shared_mutex mutex;
           ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rolloverdescription.h:22:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingpolicy.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingfileappenderskeleton.h:25,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rollingfileappender.h:25,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/class.cpp:33:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/action.h:51:3: error: 'mutex' in namespace 'std' does not name a type
   std::mutex mutex;
   ^
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/writerappender.h:26:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/fileappender.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/dailyrollingfileappender.h:28,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/dailyrollingfileappender.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/appenderskeleton.h:77:11: error: 'shared_mutex' in namespace 'log4cxx' does not name a type
   mutable log4cxx::shared_mutex mutex;
           ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:297: src/main/cpp/CMakeFiles/log4cxx.dir/consoleappender.cpp.o] Error 1
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:128: src/main/cpp/CMakeFiles/log4cxx.dir/asyncappender.cpp.o] Error 1
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:141: src/main/cpp/CMakeFiles/log4cxx.dir/basicconfigurator.cpp.o] Error 1
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rolloverdescription.h:22:0,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingpolicy.h:23,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/rollingfileappenderskeleton.h:25,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/dailyrollingfileappender.h:30,
                 from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/dailyrollingfileappender.cpp:19:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/rolling/action.h:51:3: error: 'mutex' in namespace 'std' does not name a type
   std::mutex mutex;
   ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:310: src/main/cpp/CMakeFiles/log4cxx.dir/cyclicbuffer.cpp.o] Error 1
In file included from /tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/cpp/dailyrollingfileappender.cpp:20:0:
/tmp/instance-1/output-1/build/log4cxx-0.12.0/src/main/include/log4cxx/helpers/loglog.h:50:3: error: 'mutex' in namespace 'std' does not name a type
   std::mutex mutex;
   ^
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:323: src/main/cpp/CMakeFiles/log4cxx.dir/dailyrollingfileappender.cpp.o] Error 1
make[3]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:245: src/main/cpp/CMakeFiles/log4cxx.dir/class.cpp.o] Error 1
make[3]: Leaving directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
make[2]: *** [CMakeFiles/Makefile2:241: src/main/cpp/CMakeFiles/log4cxx.dir/all] Error 2
make[2]: Leaving directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
make[1]: *** [Makefile:130: all] Error 2
make[1]: Leaving directory '/tmp/instance-1/output-1/build/log4cxx-0.12.0'
make: *** [package/pkg-generic.mk:294: /tmp/instance-1/output-1/build/log4cxx-0.12.0/.stamp_built] Error 2
make: Leaving directory '/tmp/instance-1/buildroot'