Errors

the errors that I get while compiling GTSAM 2.3.1 on the ubuntu 12.04

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp: In function ‘void runPerturb()’:

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:487:3: error: ‘mt19937’ is not a member of ‘boost::random’

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:487:3: note: suggested alternative:

/usr/include/boost/random/mersenne_twister.hpp:361:47: note:   ‘boost::mt19937’

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:487:26: error: expected ‘;’ before ‘rng’

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:488:3: error: ‘normal_distribution’ is not a member of ‘boost::random’

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:488:3: note: suggested alternative:

/usr/include/boost/random/normal_distribution.hpp:37:7: note:   ‘boost::normal_distribution’

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:488:38: error: expected primary-expression before ‘double’

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:488:38: error: expected ‘;’ before ‘double’

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:497:26: error: ‘rng’ was not declared in this scope

/home/sai/workspace/gtsam-2.3.1/examples/SolverComparer.cpp:497:29: error: ‘normal’ was not declared in this scope

make[2]: *** [examples/CMakeFiles/SolverComparer.dir/SolverComparer.cpp.o] Error 1

make[1]: *** [examples/CMakeFiles/SolverComparer.dir/all] Error 2

make: *** [all] Error 2

Solution

The error is solved by changing the lines 487 and 488 from examples/SolverComparer.cpp

  boost::random::mt19937 rng;

  boost::random::normal_distribution normal(0.0, perturbationNoise);

to

  boost::mt19937 rng;

  boost::normal_distribution normal(0.0, perturbationNoise);

Thanks.