ml module doesn't have a folder named "dt"

[oaix]

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Your Environment

• Operating System and version: Ubuntu 14.04
• Compiler: cmake
• PCL Version: up to date with 'origin/master'

Expected Behavior

Current Behavior

• After installed from source code, I can't include the header file #include <pcl/ml/dt/decision_forest_trainer.h>. Then I change it to #include <pcl/ml/decision_forest_trainer.h>. It works. But when compiling, it can't find #include <pcl/ml/dt/decision_tree.h>. Then I do cd/usr/local/include/pcl-1.8/pcl/ml. No folder named dt exists.
• I think there is something wrong with the install configuration. The all header files of ml module are in the ml folder, without any other child folders. The content tree of ml is like this:

➜  ml tree
.
├── branch_estimator.h
├── decision_forest_evaluator.h
├── decision_forest.h
├── decision_forest_trainer.h
├── decision_tree_data_provider.h
├── decision_tree_evaluator.h
├── decision_tree.h
├── decision_tree_trainer.h
├── densecrf.h
├── feature_handler.h
├── fern_evaluator.h
├── fern.h
├── fern_trainer.h
├── kmeans.h
├── multi_channel_2d_comparison_feature.h
├── multi_channel_2d_comparison_feature_handler.h
├── multi_channel_2d_data_set.h
├── multiple_data_2d_example_index.h
├── pairwise_potential.h
├── permutohedral.h
├── point_xy_32f.h
├── point_xy_32i.h
├── regression_variance_stats_estimator.h
├── stats_estimator.h
├── svm.h
└── svm_wrapper.h

• But in the file of decision_forest_trainer.h writes include items like this:

#include <pcl/ml/dt/decision_forest.h>
#include <pcl/ml/dt/decision_tree.h>
#include <pcl/ml/dt/decision_tree_trainer.h>

Many other header files have the same problem of ml module.

Possible Solution

Code to Reproduce

Context