flann gcc bug (verbose)

/usr/bin/make -f src/cpp/CMakeFiles/flann_cpp.dir/build.make src/cpp/CMakeFiles/flann_cpp.dir/depend
[ 41%] Building CXX object src/cpp/CMakeFiles/flann_s.dir/flann/flann.cpp.o
cd /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp && /home/zino/buildroot/output/host/usr/bin/microblaze-buildroot-linux-gnu-g++   -DFLANN_STATIC -D_FLANN_VERSION=1.8.4 -I/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os  -O3 -DNDEBUG   -Wall -Wno-unknown-pragmas -Wno-unused-function -fPIC -o CMakeFiles/flann_s.dir/flann/flann.cpp.o -c /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/flann/flann.cpp
make[3]: Entering directory '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49'
cd /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49 && /home/zino/buildroot/output/host/usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49 /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49 /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/CMakeFiles/flann_cpp.dir/DependInfo.cmake
make[3]: Leaving directory '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49'
/usr/bin/make -f src/cpp/CMakeFiles/flann_cpp.dir/build.make src/cpp/CMakeFiles/flann_cpp.dir/build
make[3]: Entering directory '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49'
make[3]: Nothing to be done for 'src/cpp/CMakeFiles/flann_cpp.dir/build'.
make[3]: Leaving directory '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49'
[ 50%] Built target flann_cpp
In file included from /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/flann/algorithms/all_indices.h:35:0,
                 from /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/flann/flann.hpp:45,
                 from /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/flann/flann.h:476,
                 from /home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/flann/flann.cpp:31:
/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/flann/algorithms/nn_index.h: In member function ‘int flann::NNIndex<Distance>::knnSearch(const flann::Matrix<typename Distance::ElementType>&, flann::Matrix<unsigned int>&, flann::Matrix<typename Distance::ResultType>&, size_t, const flann::SearchParams&) const [with Distance = flann::KL_Divergence<double>; typename Distance::ElementType = double; typename Distance::ResultType = double; size_t = unsigned int]’:
/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/src/cpp/flann/algorithms/nn_index.h:357:5: internal compiler error: in gen_reg_rtx, at emit-rtl.c:1027
     }
     ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.buildroot.net/> for instructions.
src/cpp/CMakeFiles/flann_s.dir/build.make:62: recipe for target 'src/cpp/CMakeFiles/flann_s.dir/flann/flann.cpp.o' failed
make[3]: *** [src/cpp/CMakeFiles/flann_s.dir/flann/flann.cpp.o] Error 1
make[3]: Leaving directory '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49'
CMakeFiles/Makefile2:270: recipe for target 'src/cpp/CMakeFiles/flann_s.dir/all' failed
make[2]: *** [src/cpp/CMakeFiles/flann_s.dir/all] Error 2
make[2]: Leaving directory '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49'
Makefile:149: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49'
package/pkg-generic.mk:195: recipe for target '/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/.stamp_built' failed
make: *** [/home/zino/buildroot/output/build/flann-04b4a56533faf8c8228d011d05ba376038364b49/.stamp_built] Error 2