>>> libabseil-cpp 20200923.2 Extracting
gzip -d -c /home/giuliobenetti/autobuild/run/instance-0/dl/libabseil-cpp/libabseil-cpp-20200923.2.tar.gz | tar --strip-components=1 -C /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2   -xf -
>>> libabseil-cpp 20200923.2 Patching

Applying 0001-force-position-independent-code.patch using patch: 
patching file CMake/AbseilHelpers.cmake
>>> libabseil-cpp 20200923.2 Configuring
(mkdir -p /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/ && cd /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/ && rm -f CMakeCache.txt && PATH="/home/giuliobenetti/autobuild/run/instance-0/output-1/host/bin:/home/giuliobenetti/autobuild/run/instance-0/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin"  /home/giuliobenetti/autobuild/run/instance-0/output-1/host/bin/cmake /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/ -DCMAKE_TOOLCHAIN_FILE="/home/giuliobenetti/autobuild/run/instance-0/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  -DABSL_ENABLE_INSTALL=ON -DABSL_USE_GOOGLETEST_HEAD=OFF -DABSL_RUN_TESTS=OFF )
-- The CXX compiler identification is GNU 5.5.0
-- Check for working CXX compiler: /home/giuliobenetti/autobuild/run/instance-0/output-1/host/bin/arm-linux-g++
-- Check for working CXX compiler: /home/giuliobenetti/autobuild/run/instance-0/output-1/host/bin/arm-linux-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- 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 - Success
-- Found Threads: TRUE  
-- 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_TESTING
    BUILD_TESTS


-- Build files have been written to: /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2
>>> libabseil-cpp 20200923.2 Building
PATH="/home/giuliobenetti/autobuild/run/instance-0/output-1/host/bin:/home/giuliobenetti/autobuild/run/instance-0/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin"  /usr/bin/make -j4  -C /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/
make[1]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[2]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
Scanning dependencies of target strerror
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
Scanning dependencies of target log_severity
Scanning dependencies of target exponential_biased
Scanning dependencies of target spinlock_wait
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
make[3]: Entering directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
[  0%] Building CXX object absl/base/CMakeFiles/strerror.dir/internal/strerror.cc.o
[  1%] Building CXX object absl/base/CMakeFiles/spinlock_wait.dir/internal/spinlock_wait.cc.o
[  1%] Building CXX object absl/base/CMakeFiles/log_severity.dir/log_severity.cc.o
[  2%] Building CXX object absl/base/CMakeFiles/exponential_biased.dir/internal/exponential_biased.cc.o
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/atomic:38:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:19:
/home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support \
  ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/array:35:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:18,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support \
  ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:67:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/scheduling_mode.h:21,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:24,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:22:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/policy_checks.h:77:2: error: #error "C++ versions less than C++11 are not supported."
 #error "C++ versions less than C++11 are not supported."
  ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/scheduling_mode.h:21:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:24,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:22:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:1: warning: identifier 'static_assert' is a keyword in C++11 [-Wc++0x-compat]
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
 ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:67:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:20,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/policy_checks.h:77:2: error: #error "C++ versions less than C++11 are not supported."
 #error "C++ versions less than C++11 are not supported."
  ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:20:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:1: warning: identifier 'static_assert' is a keyword in C++11 [-Wc++0x-compat]
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
 ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:0:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:77:3: warning: identifier 'constexpr' is a keyword in C++11 [-Wc++0x-compat]
   static constexpr int kPrngNumBits = 48;
   ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:67:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.h:20,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/policy_checks.h:77:2: error: #error "C++ versions less than C++11 are not supported."
 #error "C++ versions less than C++11 are not supported."
  ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.h:20:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:1: warning: identifier 'static_assert' is a keyword in C++11 [-Wc++0x-compat]
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
 ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/array:35:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:17:
/home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support \
  ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:42:3: warning: identifier 'decltype' is a keyword in C++11 [-Wc++0x-compat]
   if (std::is_same<decltype(ret), int>::value) {
   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:66:1: warning: identifier 'constexpr' is a keyword in C++11 [-Wc++0x-compat]
 constexpr int kSysNerr = 135;
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:111:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
              ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:22:0:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:42:23: error: 'atomic' is not a member of 'std'
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:42:43: error: expected primary-expression before '>' token
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                                           ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:42:46: error: 'w' was not declared in this scope
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                                              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:42:49: error: expected primary-expression before 'int'
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                                                 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:43:23: error: expected primary-expression before 'const'
                       const SpinLockWaitTransition trans[],
                       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:44:38: error: expected primary-expression before 'scheduling_mode'
                       SchedulingMode scheduling_mode);
                                      ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:44:53: error: expression list treated as compound expression in initializer [-fpermissive]
                       SchedulingMode scheduling_mode);
                                                     ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:50:24: error: variable or field 'SpinLockWake' declared void
 void SpinLockWake(std::atomic<uint32_t> *w, bool all);
                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:50:19: error: 'atomic' is not a member of 'std'
 void SpinLockWake(std::atomic<uint32_t> *w, bool all);
                   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:50:39: error: expected primary-expression before '>' token
 void SpinLockWake(std::atomic<uint32_t> *w, bool all);
                                       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:50:42: error: 'w' was not declared in this scope
 void SpinLockWake(std::atomic<uint32_t> *w, bool all);
                                          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:50:45: error: expected primary-expression before 'bool'
 void SpinLockWake(std::atomic<uint32_t> *w, bool all);
                                             ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:58:25: error: variable or field 'SpinLockDelay' declared void
 void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
                         ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:58:20: error: 'atomic' is not a member of 'std'
 void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
                    ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:58:40: error: expected primary-expression before '>' token
 void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
                                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:58:43: error: 'w' was not declared in this scope
 void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
                                           ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:58:55: error: expected primary-expression before 'value'
 void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
                                                       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:58:62: error: expected primary-expression before 'int'
 void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
                                                              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:59:50: error: expected primary-expression before 'scheduling_mode'
                    base_internal::SchedulingMode scheduling_mode);
                                                  ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:76:36: error: variable or field 'AbslInternalSpinLockWake' declared void
 void AbslInternalSpinLockWake(std::atomic<uint32_t> *w, bool all);
                                    ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:76:31: error: 'atomic' is not a member of 'std'
 void AbslInternalSpinLockWake(std::atomic<uint32_t> *w, bool all);
                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:76:51: error: expected primary-expression before '>' token
 void AbslInternalSpinLockWake(std::atomic<uint32_t> *w, bool all);
                                                   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:76:54: error: 'w' was not declared in this scope
 void AbslInternalSpinLockWake(std::atomic<uint32_t> *w, bool all);
                                                      ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:76:57: error: expected primary-expression before 'bool'
 void AbslInternalSpinLockWake(std::atomic<uint32_t> *w, bool all);
                                                         ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:78:10: error: variable or field 'AbslInternalSpinLockDelay' declared void
     std::atomic<uint32_t> *w, uint32_t value, int loop,
          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:78:5: error: 'atomic' is not a member of 'std'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
     ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:78:25: error: expected primary-expression before '>' token
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                         ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:78:28: error: 'w' was not declared in this scope
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                            ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:78:40: error: expected primary-expression before 'value'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:78:47: error: expected primary-expression before 'int'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:79:41: error: expected primary-expression before 'scheduling_mode'
     absl::base_internal::SchedulingMode scheduling_mode);
                                         ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:82:52: error: variable or field 'SpinLockWake' declared void
 inline void absl::base_internal::SpinLockWake(std::atomic<uint32_t> *w,
                                                    ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:82:47: error: 'atomic' is not a member of 'std'
 inline void absl::base_internal::SpinLockWake(std::atomic<uint32_t> *w,
                                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:82:67: error: expected primary-expression before '>' token
 inline void absl::base_internal::SpinLockWake(std::atomic<uint32_t> *w,
                                                                   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:82:70: error: 'w' was not declared in this scope
 inline void absl::base_internal::SpinLockWake(std::atomic<uint32_t> *w,
                                                                      ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:83:47: error: expected primary-expression before 'bool'
                                               bool all) {
                                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:88:10: error: variable or field 'SpinLockDelay' declared void
     std::atomic<uint32_t> *w, uint32_t value, int loop,
          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:88:5: error: 'atomic' is not a member of 'std'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
     ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:88:25: error: expected primary-expression before '>' token
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                         ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:88:28: error: 'w' was not declared in this scope
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                            ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:88:40: error: expected primary-expression before 'value'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:88:47: error: expected primary-expression before 'int'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:89:41: error: expected primary-expression before 'scheduling_mode'
     absl::base_internal::SchedulingMode scheduling_mode) {
                                         ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:27:0:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:35:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(sizeof(std::atomic<uint32_t>) == sizeof(int),
              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:60:10: error: variable or field 'AbslInternalSpinLockDelay' declared void
     std::atomic<uint32_t> *w, uint32_t value, int loop,
          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:60:5: error: 'atomic' is not a member of 'std'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
     ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:60:25: error: expected primary-expression before '>' token
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                         ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:60:28: error: 'w' was not declared in this scope
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                            ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:60:40: error: expected primary-expression before 'value'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:60:47: error: expected primary-expression before 'int'
     std::atomic<uint32_t> *w, uint32_t value, int loop,
                                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:61:40: error: expected primary-expression before ')' token
     absl::base_internal::SchedulingMode) {
                                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:69:56: error: variable or field 'AbslInternalSpinLockWake' declared void
 ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(std::atomic<uint32_t> *w,
                                                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:69:51: error: 'atomic' is not a member of 'std'
 ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(std::atomic<uint32_t> *w,
                                                   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:69:71: error: expected primary-expression before '>' token
 ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(std::atomic<uint32_t> *w,
                                                                       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:69:74: error: 'w' was not declared in this scope
 ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(std::atomic<uint32_t> *w,
                                                                          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_linux.inc:70:51: error: expected primary-expression before 'bool'
                                                   bool all) {
                                                   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:39:28: error: redefinition of 'uint32_t absl::lts_2020_09_23::base_internal::SpinLockWait'
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                            ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:22:0:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.h:42:10: note: 'uint32_t absl::lts_2020_09_23::base_internal::SpinLockWait' previously defined here
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:39:23: error: 'atomic' is not a member of 'std'
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:39:43: error: expected primary-expression before '>' token
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                                           ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:39:46: error: 'w' was not declared in this scope
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                                              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:39:49: error: expected primary-expression before 'int'
 uint32_t SpinLockWait(std::atomic<uint32_t> *w, int n,
                                                 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:40:23: error: expected primary-expression before 'const'
                       const SpinLockWaitTransition trans[],
                       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:41:53: error: expected primary-expression before 'scheduling_mode'
                       base_internal::SchedulingMode scheduling_mode) {
                                                     ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:81:1: error: expected '}' at end of input
 }  // namespace absl
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:81:1: error: expected '}' at end of input
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/spinlock_wait.cc:81:1: error: expected '}' at end of input
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/atomic:38:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:20:
/home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/arm-buildroot-linux-uclibcgnueabi/include/c++/5.5.0/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support \
  ^
absl/base/CMakeFiles/spinlock_wait.dir/build.make:62: recipe for target 'absl/base/CMakeFiles/spinlock_wait.dir/internal/spinlock_wait.cc.o' failed
make[3]: *** [absl/base/CMakeFiles/spinlock_wait.dir/internal/spinlock_wait.cc.o] Error 1
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
CMakeFiles/Makefile2:338: recipe for target 'absl/base/CMakeFiles/spinlock_wait.dir/all' failed
make[2]: *** [absl/base/CMakeFiles/spinlock_wait.dir/all] Error 2
make[2]: *** Waiting for unfinished jobs....
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:20:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:111:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
              ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:21:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/macros.h:53:1: warning: 'auto' changes meaning in C++11; please remove it [-Wc++0x-compat]
 auto ArraySizeHelper(const T (&array)[N]) -> char (&)[N];
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/macros.h:53:56: error: ISO C++ forbids declaration of 'ArraySizeHelper' with no type [-fpermissive]
 auto ArraySizeHelper(const T (&array)[N]) -> char (&)[N];
                                                        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/macros.h:53:56: error: top-level declaration of 'ArraySizeHelper' specifies 'auto'
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/macros.h:53:56: error: trailing return type only available with -std=c++11 or -std=gnu++11
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:0:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:77:10: error: 'constexpr' does not name a type
   static constexpr int kPrngNumBits = 48;
          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:77:10: note: C++11 'constexpr' only available with -std=c++11 or -std=gnu++11
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:109:18: warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11
   uint64_t rng_{0};
                  ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:110:17: warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11
   double bias_{0};
                 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:111:26: warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11
   bool initialized_{false};
                          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:109:16: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
   uint64_t rng_{0};
                ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:109:18: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
   uint64_t rng_{0};
                  ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:110:15: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
   double bias_{0};
               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:110:17: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
   double bias_{0};
                 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:111:20: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
   bool initialized_{false};
                    ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:111:26: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
   bool initialized_{false};
                          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h: In static member function 'static uint64_t absl::lts_2020_09_23::base_internal::ExponentialBiased::NextRandom(uint64_t)':
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:118:38: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11
   const uint64_t prng_mult = uint64_t{0x5DEECE66D};
                                      ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:67:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/attributes.h:39,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:21,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/policy_checks.h:77:2: error: #error "C++ versions less than C++11 are not supported."
 #error "C++ versions less than C++11 are not supported."
  ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/attributes.h:39:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:21,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:1: warning: identifier 'static_assert' is a keyword in C++11 [-Wc++0x-compat]
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
 ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:15:0:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:80:1: warning: identifier 'constexpr' is a keyword in C++11 [-Wc++0x-compat]
 constexpr std::array<absl::LogSeverity, 4> LogSeverities() {
 ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.h:20:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:111:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc: In function 'const char* absl::lts_2020_09_23::base_internal::{anonymous}::StrErrorAdaptor(int, char*, size_t)':
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:41:3: warning: 'auto' changes meaning in C++11; please remove it [-Wc++0x-compat]
   auto ret = strerror_r(errnum, buf, buflen);
   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:41:8: error: 'ret' does not name a type
   auto ret = strerror_r(errnum, buf, buflen);
        ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:42:7: error: 'is_same' is not a member of 'std'
   if (std::is_same<decltype(ret), int>::value) {
       ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:42:29: error: 'ret' was not declared in this scope
   if (std::is_same<decltype(ret), int>::value) {
                             ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:42:32: error: 'decltype' was not declared in this scope
   if (std::is_same<decltype(ret), int>::value) {
                                ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:42:35: error: expected primary-expression before 'int'
   if (std::is_same<decltype(ret), int>::value) {
                                   ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:42:35: error: expected ')' before 'int'
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc: At global scope:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:32:33: warning: unused parameter 'errnum' [-Wunused-parameter]
 const char* StrErrorAdaptor(int errnum, char* buf, size_t buflen) {
                                 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:32:59: warning: unused parameter 'buflen' [-Wunused-parameter]
 const char* StrErrorAdaptor(int errnum, char* buf, size_t buflen) {
                                                           ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:66:1: error: 'constexpr' does not name a type
 constexpr int kSysNerr = 135;
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:66:1: note: C++11 'constexpr' only available with -std=c++11 or -std=gnu++11
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:68:6: error: 'array' in namespace 'std' does not name a template type
 std::array<std::string, kSysNerr>* NewStrErrorTable() {
      ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc: In function 'std::__cxx11::string absl::lts_2020_09_23::base_internal::StrError(int)':
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:79:16: warning: 'auto' changes meaning in C++11; please remove it [-Wc++0x-compat]
   static const auto* table = NewStrErrorTable();
                ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:79:22: error: conflicting specifiers in declaration of 'table'
   static const auto* table = NewStrErrorTable();
                      ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:79:47: error: 'NewStrErrorTable' was not declared in this scope
   static const auto* table = NewStrErrorTable();
                                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/strerror.cc:80:48: error: 'table' was not declared in this scope
   if (errnum >= 0 && errnum < static_cast<int>(table->size())) {
                                                ^
absl/base/CMakeFiles/strerror.dir/build.make:62: recipe for target 'absl/base/CMakeFiles/strerror.dir/internal/strerror.cc.o' failed
make[3]: *** [absl/base/CMakeFiles/strerror.dir/internal/strerror.cc.o] Error 1
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
CMakeFiles/Makefile2:177: recipe for target 'absl/base/CMakeFiles/strerror.dir/all' failed
make[2]: *** [absl/base/CMakeFiles/strerror.dir/all] Error 2
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc: In member function 'int64_t absl::lts_2020_09_23::base_internal::ExponentialBiased::GetSkipCount(int64_t)':
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:54:44: error: 'kPrngNumBits' was not declared in this scope
   double q = static_cast<uint32_t>(rng >> (kPrngNumBits - 26)) + 1.0;
                                            ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:56:30: error: 'log2' is not a member of 'std'
   double interval = bias_ + (std::log2(q) - 26) * (-std::log(2.0) * mean);
                              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:56:30: note: suggested alternative:
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/features.h:395:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/stdint.h:25,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/lib/gcc/arm-buildroot-linux-uclibcgnueabi/5.5.0/include/stdint.h:9,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:18,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/bits/mathcalls.h:159:1: note:   'log2'
 __MATHCALLI (log2,, (_Mdouble_ __x))
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:67:18: error: 'round' is not a member of 'std'
   double value = std::round(interval);
                  ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:67:18: note: suggested alternative:
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/features.h:395:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/stdint.h:25,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/lib/gcc/arm-buildroot-linux-uclibcgnueabi/5.5.0/include/stdint.h:9,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.h:18,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/include/bits/mathcalls.h:329:1: note:   'round'
 __MATHCALLX (round,, (_Mdouble_ __x), (__const__))
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc: In member function 'void absl::lts_2020_09_23::base_internal::ExponentialBiased::Initialize()':
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:81:31: error: 'atomic' in namespace 'std' does not name a template type
   ABSL_CONST_INIT static std::atomic<uint32_t> global_rand(0);
                               ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:83:16: error: 'global_rand' was not declared in this scope
                global_rand.fetch_add(1, std::memory_order_relaxed);
                ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/internal/exponential_biased.cc:83:41: error: 'memory_order_relaxed' is not a member of 'std'
                global_rand.fetch_add(1, std::memory_order_relaxed);
                                         ^
absl/base/CMakeFiles/exponential_biased.dir/build.make:62: recipe for target 'absl/base/CMakeFiles/exponential_biased.dir/internal/exponential_biased.cc.o' failed
make[3]: *** [absl/base/CMakeFiles/exponential_biased.dir/internal/exponential_biased.cc.o] Error 1
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
CMakeFiles/Makefile2:472: recipe for target 'absl/base/CMakeFiles/exponential_biased.dir/all' failed
make[2]: *** [absl/base/CMakeFiles/exponential_biased.dir/all] Error 2
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/attributes.h:39:0,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:21,
                 from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:15:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:108:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != '\0',
              ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/config.h:111:14: error: expected constructor, destructor, or type conversion before '(' token
 static_assert(ABSL_INTERNAL_INLINE_NAMESPACE_STR[0] != 'h' ||
              ^
In file included from /home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:15:0:
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:69:1: warning: scoped enums only available with -std=c++11 or -std=gnu++11
 enum class LogSeverity : int {
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:69:26: warning: scoped enums only available with -std=c++11 or -std=gnu++11
 enum class LogSeverity : int {
                          ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:80:1: error: 'constexpr' does not name a type
 constexpr std::array<absl::LogSeverity, 4> LogSeverities() {
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:80:1: note: C++11 'constexpr' only available with -std=c++11 or -std=gnu++11
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:89:1: error: 'constexpr' does not name a type
 constexpr const char* LogSeverityName(absl::LogSeverity s) {
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:89:1: note: C++11 'constexpr' only available with -std=c++11 or -std=gnu++11
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:103:1: error: 'constexpr' does not name a type
 constexpr absl::LogSeverity NormalizeLogSeverity(absl::LogSeverity s) {
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:103:1: note: C++11 'constexpr' only available with -std=c++11 or -std=gnu++11
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:108:1: error: 'constexpr' does not name a type
 constexpr absl::LogSeverity NormalizeLogSeverity(int s) {
 ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.h:108:1: note: C++11 'constexpr' only available with -std=c++11 or -std=gnu++11
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc: In function 'std::ostream& absl::lts_2020_09_23::operator<<(std::ostream&, absl::lts_2020_09_23::LogSeverity)':
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:23:12: error: 'NormalizeLogSeverity' is not a member of 'absl'
   if (s == absl::NormalizeLogSeverity(s)) return os << absl::LogSeverityName(s);
            ^
/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/absl/base/log_severity.cc:23:56: error: 'LogSeverityName' is not a member of 'absl'
   if (s == absl::NormalizeLogSeverity(s)) return os << absl::LogSeverityName(s);
                                                        ^
absl/base/CMakeFiles/log_severity.dir/build.make:62: recipe for target 'absl/base/CMakeFiles/log_severity.dir/log_severity.cc.o' failed
make[3]: *** [absl/base/CMakeFiles/log_severity.dir/log_severity.cc.o] Error 1
make[3]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
CMakeFiles/Makefile2:274: recipe for target 'absl/base/CMakeFiles/log_severity.dir/all' failed
make[2]: *** [absl/base/CMakeFiles/log_severity.dir/all] Error 2
make[2]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
Makefile:129: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2'
package/pkg-generic.mk:247: recipe for target '/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/.stamp_built' failed
make: *** [/home/giuliobenetti/autobuild/run/instance-0/output-1/build/libabseil-cpp-20200923.2/.stamp_built] Error 2
make: Leaving directory '/home/giuliobenetti/autobuild/run/instance-0/buildroot'