编译ceres-solver-1.11.0遇到问题
执行：

cmake ..
#成功
make
#报错如下

[ 34%] Building CXX object internal/ceres/CMakeFiles/ceres.dir/generated/partitioned_matrix_view_4_4_d.cc.o
[ 34%] Building CXX object internal/ceres/CMakeFiles/ceres.dir/generated/partitioned_matrix_view_d_d_d.cc.o
[ 35%] Building CXX object internal/ceres/CMakeFiles/ceres.dir/generated/schur_eliminator_2_2_2.cc.o
In file included from /home/tonglu/pkg/ceres-solver-1.11.0bianyiyouwenti/internal/ceres/schur_eliminator_impl.h:64:0,
                 from /home/tonglu/pkg/ceres-solver-1.11.0bianyiyouwenti/internal/ceres/generated/schur_eliminator_2_2_2.cc:48:
/home/tonglu/pkg/ceres-solver-1.11.0bianyiyouwenti/internal/ceres/schur_eliminator.h: In member function ‘void ceres::internal::SchurEliminator<kRowBlockSize, kEBlockSize, kFBlockSize>::Init(int, const ceres::internal::CompressedRowBlockStructure*) [with int kRowBlockSize = 2; int kEBlockSize = 2; int kFBlockSize = 2]’:
/home/tonglu/pkg/ceres-solver-1.11.0bianyiyouwenti/internal/ceres/schur_eliminator.h:267:10: error: ‘<anonymous>.ceres::internal::SchurEliminator<2, 2, 2>::Chunk::start’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
   struct Chunk {
          ^~~~~
cc1plus: some warnings being treated as errors
internal/ceres/CMakeFiles/ceres.dir/build.make:2558: recipe for target 'internal/ceres/CMakeFiles/ceres.dir/generated/schur_eliminator_2_2_2.cc.o' failed
make[2]: *** [internal/ceres/CMakeFiles/ceres.dir/generated/schur_eliminator_2_2_2.cc.o] Error 1
CMakeFiles/Makefile2:1618: recipe for target 'internal/ceres/CMakeFiles/ceres.dir/all' failed
make[1]: *** [internal/ceres/CMakeFiles/ceres.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2

但是在编译ceres-solver-1.14.0时，同样的cmake … 和make 都没有问题，就先用14吧