redefinition of ‘class TicToc’

[wolf943134497]

[ 2%] Building CXX object CMakeFiles/vins_estimator.dir/src/estimator_node.cpp.o
In file included from /vins-mono/src/vins_estimator/src/feature_tracker/feature_tracker.h:17:0,
from /vins-mono/src/vins_estimator/src/estimator_node.cpp:29:
/vins-mono/src/vins_estimator/src/feature_tracker/tic_toc.h:7:7: error: redefinition of ‘class TicToc’
class TicToc
^
In file included from /vins-mono/src/vins_estimator/src/estimator.h:6:0,
from /vins-mono/src/vins_estimator/src/estimator_node.cpp:11:
/vins-mono/src/vins_estimator/src/utility/tic_toc.h:7:7: error: previous definition of ‘class TicToc’
class TicToc
^
CMakeFiles/vins_estimator.dir/build.make:62: recipe for target 'CMakeFiles/vins_estimator.dir/src/estimator_node.cpp.o' failed

[FanTuan7]

Your compliler might not support "paragma once"
find files where the class is defined， then replace
“#pragma once”
by
"#ifndef TICTOC_H_
#define TICTOC_H_
......
#endif". works for me.