Performing C++ SOURCE FILE Test HAVE_OMIT_LEAF_FRAME_POINTER failed with the following output:
Change Dir: /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_ebfb1/fast && make[1]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_ebfb1.dir/build.make CMakeFiles/cmTC_ebfb1.dir/build
make[2]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_ebfb1.dir/src.cxx.o
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/nios2-linux-g++ --sysroot=/home/giuliobenetti/autobuild/run/instance-3/output-1/host/nios2-buildroot-linux-gnu/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -W -Wextra -Wall -Wsign-compare -Wshadow -Wno-unused-parameter -Wno-unused-variable -Woverloaded-virtual -Wnon-virtual-dtor -Wno-missing-field-initializers -Wno-strict-aliasing -std=c++11 -fno-omit-frame-pointer -DHAVE_OMIT_LEAF_FRAME_POINTER  -DNDEBUG   -momit-leaf-frame-pointer -o CMakeFiles/cmTC_ebfb1.dir/src.cxx.o -c /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp/src.cxx
nios2-linux-g++.br_real: error: unrecognized command line option '-momit-leaf-frame-pointer'; did you mean '-fomit-frame-pointer'?
CMakeFiles/cmTC_ebfb1.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_ebfb1.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_ebfb1.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_ebfb1/fast' failed
make[1]: *** [cmTC_ebfb1/fast] Error 2
make[1]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'


Source file was:
int main() { return 0; }
Performing C++ SOURCE FILE Test HAVE_SSE42 failed with the following output:
Change Dir: /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_fe04a/fast && make[1]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_fe04a.dir/build.make CMakeFiles/cmTC_fe04a.dir/build
make[2]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_fe04a.dir/src.cxx.o
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/nios2-linux-g++ --sysroot=/home/giuliobenetti/autobuild/run/instance-3/output-1/host/nios2-buildroot-linux-gnu/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -W -Wextra -Wall -Wsign-compare -Wshadow -Wno-unused-parameter -Wno-unused-variable -Woverloaded-virtual -Wnon-virtual-dtor -Wno-missing-field-initializers -Wno-strict-aliasing -std=c++11 -fno-omit-frame-pointer -DHAVE_SSE42 -msse4.2 -mpclmul  -DNDEBUG   -o CMakeFiles/cmTC_fe04a.dir/src.cxx.o -c /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp/src.cxx
nios2-linux-g++.br_real: error: unrecognized command line option '-msse4.2'
nios2-linux-g++.br_real: error: unrecognized command line option '-mpclmul'; did you mean '-mhw-mul'?
CMakeFiles/cmTC_fe04a.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_fe04a.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_fe04a.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_fe04a/fast' failed
make[1]: *** [cmTC_fe04a/fast] Error 2
make[1]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'


Source file was:

#include <cstdint>
#include <nmmintrin.h>
#include <wmmintrin.h>
int main() {
  volatile uint32_t x = _mm_crc32_u32(0, 0);
  const auto a = _mm_set_epi64x(0, 0);
  const auto b = _mm_set_epi64x(0, 0);
  const auto c = _mm_clmulepi64_si128(a, b, 0x00);
  auto d = _mm_cvtsi128_si64(c);
}

Determining if the getauxval exist failed with the following output:
Change Dir: /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_6164b/fast && make[1]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_6164b.dir/build.make CMakeFiles/cmTC_6164b.dir/build
make[2]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_6164b.dir/CheckSymbolExists.cxx.o
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/nios2-linux-g++ --sysroot=/home/giuliobenetti/autobuild/run/instance-3/output-1/host/nios2-buildroot-linux-gnu/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -W -Wextra -Wall -Wsign-compare -Wshadow -Wno-unused-parameter -Wno-unused-variable -Woverloaded-virtual -Wnon-virtual-dtor -Wno-missing-field-initializers -Wno-strict-aliasing -std=c++11 -fno-omit-frame-pointer -Werror -fno-builtin-memcmp   -DNDEBUG   -o CMakeFiles/cmTC_6164b.dir/CheckSymbolExists.cxx.o -c /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx
/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx:2:10: fatal error: auvx.h: No such file or directory
 #include <auvx.h>
          ^~~~~~~~
compilation terminated.
CMakeFiles/cmTC_6164b.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_6164b.dir/CheckSymbolExists.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_6164b.dir/CheckSymbolExists.cxx.o] Error 1
make[2]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_6164b/fast' failed
make[1]: *** [cmTC_6164b/fast] Error 2
make[1]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'


File /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx:
/* */
#include <auvx.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef getauxval
  return ((int*)(&getauxval))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output:
Change Dir: /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_04ca8/fast && make[1]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_04ca8.dir/build.make CMakeFiles/cmTC_04ca8.dir/build
make[2]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_04ca8.dir/src.c.o
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/nios2-linux-gcc --sysroot=/home/giuliobenetti/autobuild/run/instance-3/output-1/host/nios2-buildroot-linux-gnu/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCMAKE_HAVE_LIBC_PTHREAD  -DNDEBUG   -o CMakeFiles/cmTC_04ca8.dir/src.c.o   -c /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp/src.c
Linking C executable cmTC_04ca8
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_04ca8.dir/link.txt --verbose=1
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/nios2-linux-gcc --sysroot=/home/giuliobenetti/autobuild/run/instance-3/output-1/host/nios2-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCMAKE_HAVE_LIBC_PTHREAD  -DNDEBUG    CMakeFiles/cmTC_04ca8.dir/src.c.o  -o cmTC_04ca8 
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/nios2-buildroot-linux-gnu/8.3.0/../../../../nios2-buildroot-linux-gnu/bin/ld: CMakeFiles/cmTC_04ca8.dir/src.c.o: in function `main':
src.c:(.text.startup+0x28): undefined reference to `pthread_create'
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/nios2-buildroot-linux-gnu/8.3.0/../../../../nios2-buildroot-linux-gnu/bin/ld: src.c:(.text.startup+0x30): undefined reference to `pthread_detach'
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/nios2-buildroot-linux-gnu/8.3.0/../../../../nios2-buildroot-linux-gnu/bin/ld: src.c:(.text.startup+0x3c): undefined reference to `pthread_join'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_04ca8.dir/build.make:86: recipe for target 'cmTC_04ca8' failed
make[2]: *** [cmTC_04ca8] Error 1
make[2]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_04ca8/fast' failed
make[1]: *** [cmTC_04ca8/fast] Error 2
make[1]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'


Source file was:
#include <pthread.h>

void* test_func(void* data)
{
  return data;
}

int main(void)
{
  pthread_t thread;
  pthread_create(&thread, NULL, test_func, NULL);
  pthread_detach(thread);
  pthread_join(thread, NULL);
  pthread_atfork(NULL, NULL, NULL);
  pthread_exit(NULL);

  return 0;
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_48459/fast && make[1]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_48459.dir/build.make CMakeFiles/cmTC_48459.dir/build
make[2]: Entering directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_48459.dir/CheckFunctionExists.c.o
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/nios2-linux-gcc --sysroot=/home/giuliobenetti/autobuild/run/instance-3/output-1/host/nios2-buildroot-linux-gnu/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create  -DNDEBUG   -o CMakeFiles/cmTC_48459.dir/CheckFunctionExists.c.o   -c /home/giuliobenetti/autobuild/run/instance-3/output-1/host/share/cmake-3.15/Modules/CheckFunctionExists.c
Linking C executable cmTC_48459
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_48459.dir/link.txt --verbose=1
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/bin/nios2-linux-gcc --sysroot=/home/giuliobenetti/autobuild/run/instance-3/output-1/host/nios2-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create  -DNDEBUG    CMakeFiles/cmTC_48459.dir/CheckFunctionExists.c.o  -o cmTC_48459 -lpthreads 
/home/giuliobenetti/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/nios2-buildroot-linux-gnu/8.3.0/../../../../nios2-buildroot-linux-gnu/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_48459.dir/build.make:86: recipe for target 'cmTC_48459' failed
make[2]: *** [cmTC_48459] Error 1
make[2]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_48459/fast' failed
make[1]: *** [cmTC_48459/fast] Error 2
make[1]: Leaving directory '/home/giuliobenetti/autobuild/run/instance-3/output-1/build/rocksdb-6.6.4/CMakeFiles/CMakeTmp'