* installing *source* package ‘gpboost’ ...
** using staged installation
checking location of R... /home/hornik/tmp/R
checking whether MM_PREFETCH works... yes
checking whether MM_MALLOC works... yes
configure: creating ./config.status
config.status: creating src/Makevars
** libs
using C compiler: ‘Debian clang version 19.1.5 (1)’
using C++ compiler: ‘Debian clang version 19.1.5 (1)’
using C++17
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c boosting/boosting.cpp -o boosting/boosting.o
In file included from boosting/boosting.cpp:7:
In file included from boosting/dart.hpp:16:
In file included from boosting/gbdt.h:10:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from boosting/boosting.cpp:7:
In file included from boosting/dart.hpp:16:
In file included from boosting/gbdt.h:10:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from boosting/boosting.cpp:7:
In file included from boosting/dart.hpp:16:
In file included from boosting/gbdt.h:10:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c boosting/gbdt.cpp -o boosting/gbdt.o
In file included from boosting/gbdt.cpp:6:
In file included from boosting/gbdt.h:10:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from boosting/gbdt.cpp:6:
In file included from boosting/gbdt.h:10:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from boosting/gbdt.cpp:6:
In file included from boosting/gbdt.h:10:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c boosting/gbdt_model_text.cpp -o boosting/gbdt_model_text.o
In file included from boosting/gbdt_model_text.cpp:6:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from boosting/gbdt_model_text.cpp:6:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from boosting/gbdt_model_text.cpp:6:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c boosting/gbdt_prediction.cpp -o boosting/gbdt_prediction.o
In file included from boosting/gbdt_prediction.cpp:6:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from boosting/gbdt_prediction.cpp:6:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from boosting/gbdt_prediction.cpp:6:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c boosting/prediction_early_stop.cpp -o boosting/prediction_early_stop.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/bin.cpp -o io/bin.o
io/bin.cpp:164:9: warning: variable 'left_cnt_data' set but not used [-Wunused-but-set-variable]
  164 |     int left_cnt_data = 0;
      |         ^
io/bin.cpp:165:9: warning: variable 'cnt_zero' set but not used [-Wunused-but-set-variable]
  165 |     int cnt_zero = 0;
      |         ^
io/bin.cpp:166:9: warning: variable 'right_cnt_data' set but not used [-Wunused-but-set-variable]
  166 |     int right_cnt_data = 0;
      |         ^
3 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/config.cpp -o io/config.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/config_auto.cpp -o io/config_auto.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/dataset.cpp -o io/dataset.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/dataset_loader.cpp -o io/dataset_loader.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/file_io.cpp -o io/file_io.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/json11.cpp -o io/json11.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/metadata.cpp -o io/metadata.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/parser.cpp -o io/parser.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/train_share_states.cpp -o io/train_share_states.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c io/tree.cpp -o io/tree.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c metric/dcg_calculator.cpp -o metric/dcg_calculator.o
In file included from metric/dcg_calculator.cpp:5:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from metric/dcg_calculator.cpp:5:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from metric/dcg_calculator.cpp:5:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c metric/metric.cpp -o metric/metric.o
In file included from metric/metric.cpp:6:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from metric/metric.cpp:6:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from metric/metric.cpp:6:
In file included from ./include/LightGBM/metric.h:12:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c objective/objective_function.cpp -o objective/objective_function.o
In file included from objective/objective_function.cpp:6:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from objective/objective_function.cpp:6:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from objective/objective_function.cpp:6:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
In file included from objective/objective_function.cpp:8:
objective/binary_objective.hpp:215:14: warning: private field 'deterministic_' is not used [-Wunused-private-field]
  215 |   const bool deterministic_;
      |              ^
In file included from objective/objective_function.cpp:12:
objective/xentropy_objective.hpp:153:14: warning: private field 'deterministic_' is not used [-Wunused-private-field]
  153 |   const bool deterministic_;
      |              ^
objective/xentropy_objective.hpp:291:14: warning: private field 'deterministic_' is not used [-Wunused-private-field]
  291 |   const bool deterministic_;
      |              ^
7 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c network/ifaddrs_patch.cpp -o network/ifaddrs_patch.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c network/linker_topo.cpp -o network/linker_topo.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c network/linkers_mpi.cpp -o network/linkers_mpi.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c network/linkers_socket.cpp -o network/linkers_socket.o
network/linkers_socket.cpp:174:7: warning: variable 'need_connect_cnt' set but not used [-Wunused-but-set-variable]
  174 |   int need_connect_cnt = 0;
      |       ^
1 warning generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c network/network.cpp -o network/network.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c treelearner/data_parallel_tree_learner.cpp -o treelearner/data_parallel_tree_learner.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c treelearner/feature_parallel_tree_learner.cpp -o treelearner/feature_parallel_tree_learner.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c treelearner/gpu_tree_learner.cpp -o treelearner/gpu_tree_learner.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c treelearner/linear_tree_learner.cpp -o treelearner/linear_tree_learner.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c treelearner/serial_tree_learner.cpp -o treelearner/serial_tree_learner.o
In file included from treelearner/serial_tree_learner.cpp:9:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from treelearner/serial_tree_learner.cpp:9:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from treelearner/serial_tree_learner.cpp:9:
In file included from ./include/LightGBM/objective_function.h:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c treelearner/tree_learner.cpp -o treelearner/tree_learner.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c treelearner/voting_parallel_tree_learner.cpp -o treelearner/voting_parallel_tree_learner.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c c_api.cpp -o c_api.o
In file included from c_api.cpp:12:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from c_api.cpp:12:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from c_api.cpp:12:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c gpboost_R.cpp -o gpboost_R.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c re_model.cpp -o re_model.o
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
./include/GPBoost/cov_fcts.h:1185:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1185 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& dist, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:134:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::InitializeGetDistanceForCovFct' requested here
  134 |                         InitializeGetDistanceForCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
./include/GPBoost/re_model_template.h:5444:51: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::Matrix<double, -1, -1>>::RECompGP' requested here
 5444 |                         std::shared_ptr<RECompGP<den_mat_t>> gp_ip(new RECompGP<den_mat_t>(
      |                                                                        ^
./include/GPBoost/re_model_template.h:296:6: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::CreateREComponentsFITC_FSA' requested here
  296 |                                         CreateREComponentsFITC_FSA(num_data_, data_indices_per_cluster_, cluster_i, gp_coords_data,
      |                                         ^
re_model.cpp:76:81: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::REModelTemplate' requested here
   76 |                         re_model_sp_ = std::unique_ptr<REModelTemplate<sp_mat_t, chol_sp_mat_t>>(new REModelTemplate<sp_mat_t, chol_sp_mat_t>(
      |                                                                                                      ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1191:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1191 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& /* dist */, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:1433:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1433 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& dist,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:135:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::InitializeGetDistanceForGradientCovFct' requested here
  135 |                         InitializeGetDistanceForGradientCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
./include/GPBoost/re_model_template.h:5444:51: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::Matrix<double, -1, -1>>::RECompGP' requested here
 5444 |                         std::shared_ptr<RECompGP<den_mat_t>> gp_ip(new RECompGP<den_mat_t>(
      |                                                                        ^
./include/GPBoost/re_model_template.h:296:6: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::CreateREComponentsFITC_FSA' requested here
  296 |                                         CreateREComponentsFITC_FSA(num_data_, data_indices_per_cluster_, cluster_i, gp_coords_data,
      |                                         ^
re_model.cpp:76:81: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::REModelTemplate' requested here
   76 |                         re_model_sp_ = std::unique_ptr<REModelTemplate<sp_mat_t, chol_sp_mat_t>>(new REModelTemplate<sp_mat_t, chol_sp_mat_t>(
      |                                                                                                      ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1439:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1439 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& /* dist */,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:1446:38: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1446 |                                 GetDistanceForGradientCovFct_ = [this](const int /* i */, const int /* j */, const T_mat& /* dist */,
      |                                                                  ^
./include/GPBoost/cov_fcts.h:1185:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1185 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& dist, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:134:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double>>::InitializeGetDistanceForCovFct' requested here
  134 |                         InitializeGetDistanceForCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
./include/GPBoost/re_model_template.h:5456:77: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::SparseMatrix<double>>::RECompGP' requested here
 5456 |                                 re_comps_resid_cluster_i.push_back(std::shared_ptr<RECompGP<T_mat>>(new RECompGP<T_mat>(
      |                                                                                                         ^
./include/GPBoost/re_model_template.h:296:6: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::CreateREComponentsFITC_FSA' requested here
  296 |                                         CreateREComponentsFITC_FSA(num_data_, data_indices_per_cluster_, cluster_i, gp_coords_data,
      |                                         ^
re_model.cpp:76:81: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::REModelTemplate' requested here
   76 |                         re_model_sp_ = std::unique_ptr<REModelTemplate<sp_mat_t, chol_sp_mat_t>>(new REModelTemplate<sp_mat_t, chol_sp_mat_t>(
      |                                                                                                      ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1191:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1191 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& /* dist */, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:1433:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1433 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& dist,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:135:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double>>::InitializeGetDistanceForGradientCovFct' requested here
  135 |                         InitializeGetDistanceForGradientCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
./include/GPBoost/re_model_template.h:5456:77: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::SparseMatrix<double>>::RECompGP' requested here
 5456 |                                 re_comps_resid_cluster_i.push_back(std::shared_ptr<RECompGP<T_mat>>(new RECompGP<T_mat>(
      |                                                                                                         ^
./include/GPBoost/re_model_template.h:296:6: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::CreateREComponentsFITC_FSA' requested here
  296 |                                         CreateREComponentsFITC_FSA(num_data_, data_indices_per_cluster_, cluster_i, gp_coords_data,
      |                                         ^
re_model.cpp:76:81: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::REModelTemplate' requested here
   76 |                         re_model_sp_ = std::unique_ptr<REModelTemplate<sp_mat_t, chol_sp_mat_t>>(new REModelTemplate<sp_mat_t, chol_sp_mat_t>(
      |                                                                                                      ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1439:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1439 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& /* dist */,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:1446:38: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1446 |                                 GetDistanceForGradientCovFct_ = [this](const int /* i */, const int /* j */, const T_mat& /* dist */,
      |                                                                  ^
./include/GPBoost/cov_fcts.h:1185:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1185 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& dist, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:134:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double, 1>>::InitializeGetDistanceForCovFct' requested here
  134 |                         InitializeGetDistanceForCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double, 1>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
./include/GPBoost/re_model_template.h:5456:77: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::SparseMatrix<double, 1>>::RECompGP' requested here
 5456 |                                 re_comps_resid_cluster_i.push_back(std::shared_ptr<RECompGP<T_mat>>(new RECompGP<T_mat>(
      |                                                                                                         ^
./include/GPBoost/re_model_template.h:296:6: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double, 1>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double, 1>, 1, Eigen::AMDOrdering<int>>>::CreateREComponentsFITC_FSA' requested here
  296 |                                         CreateREComponentsFITC_FSA(num_data_, data_indices_per_cluster_, cluster_i, gp_coords_data,
      |                                         ^
re_model.cpp:108:90: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double, 1>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double, 1>, 1, Eigen::AMDOrdering<int>>>::REModelTemplate' requested here
  108 |                         re_model_sp_rm_ = std::unique_ptr<REModelTemplate<sp_mat_rm_t, chol_sp_mat_rm_t>>(new REModelTemplate<sp_mat_rm_t, chol_sp_mat_rm_t>(
      |                                                                                                               ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1191:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1191 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& /* dist */, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:1433:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1433 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& dist,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:135:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double, 1>>::InitializeGetDistanceForGradientCovFct' requested here
  135 |                         InitializeGetDistanceForGradientCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::SparseMatrix<double, 1>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
./include/GPBoost/re_model_template.h:5456:77: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::SparseMatrix<double, 1>>::RECompGP' requested here
 5456 |                                 re_comps_resid_cluster_i.push_back(std::shared_ptr<RECompGP<T_mat>>(new RECompGP<T_mat>(
      |                                                                                                         ^
./include/GPBoost/re_model_template.h:296:6: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double, 1>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double, 1>, 1, Eigen::AMDOrdering<int>>>::CreateREComponentsFITC_FSA' requested here
  296 |                                         CreateREComponentsFITC_FSA(num_data_, data_indices_per_cluster_, cluster_i, gp_coords_data,
      |                                         ^
re_model.cpp:108:90: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double, 1>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double, 1>, 1, Eigen::AMDOrdering<int>>>::REModelTemplate' requested here
  108 |                         re_model_sp_rm_ = std::unique_ptr<REModelTemplate<sp_mat_rm_t, chol_sp_mat_rm_t>>(new REModelTemplate<sp_mat_rm_t, chol_sp_mat_rm_t>(
      |                                                                                                               ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
In file included from ./include/GPBoost/re_model_template.h:15:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1439:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1439 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& /* dist */,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:1446:38: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1446 |                                 GetDistanceForGradientCovFct_ = [this](const int /* i */, const int /* j */, const T_mat& /* dist */,
      |                                                                  ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
./include/GPBoost/re_model_template.h:8343:42: warning: expression result unused [-Wunused-value]
 8343 |                                 re_comp_cross_cov_cluster_i_pred_ip->coords_;
      |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
./include/GPBoost/re_model_template.h:3089:8: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::CalcPredFITC_FSA' requested here
 3089 |                                                         CalcPredFITC_FSA(cluster_i, gp_coords_mat_pred, predict_cov_mat,
      |                                                         ^
re_model.cpp:962:18: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double>, 1, Eigen::AMDOrdering<int>>>::Predict' requested here
  962 |                         re_model_sp_->Predict(cov_pars_pred_trans.data(),
      |                                       ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
./include/GPBoost/re_model_template.h:8343:42: warning: expression result unused [-Wunused-value]
 8343 |                                 re_comp_cross_cov_cluster_i_pred_ip->coords_;
      |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
./include/GPBoost/re_model_template.h:3089:8: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double, 1>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double, 1>, 1, Eigen::AMDOrdering<int>>>::CalcPredFITC_FSA' requested here
 3089 |                                                         CalcPredFITC_FSA(cluster_i, gp_coords_mat_pred, predict_cov_mat,
      |                                                         ^
re_model.cpp:982:21: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::SparseMatrix<double, 1>, Eigen::SimplicialLLT<Eigen::SparseMatrix<double, 1>, 1, Eigen::AMDOrdering<int>>>::Predict' requested here
  982 |                         re_model_sp_rm_->Predict(cov_pars_pred_trans.data(),
      |                                          ^
In file included from re_model.cpp:9:
In file included from ./include/GPBoost/re_model.h:13:
./include/GPBoost/re_model_template.h:8343:42: warning: expression result unused [-Wunused-value]
 8343 |                                 re_comp_cross_cov_cluster_i_pred_ip->coords_;
      |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
./include/GPBoost/re_model_template.h:3089:8: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::Matrix<double, -1, -1>, Eigen::LLT<Eigen::Matrix<double, -1, -1>>>::CalcPredFITC_FSA' requested here
 3089 |                                                         CalcPredFITC_FSA(cluster_i, gp_coords_mat_pred, predict_cov_mat,
      |                                                         ^
re_model.cpp:1002:19: note: in instantiation of member function 'GPBoost::REModelTemplate<Eigen::Matrix<double, -1, -1>, Eigen::LLT<Eigen::Matrix<double, -1, -1>>>::Predict' requested here
 1002 |                         re_model_den_->Predict(cov_pars_pred_trans.data(),
      |                                        ^
22 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c sparse_matrix_utils.cpp -o sparse_matrix_utils.o
In file included from sparse_matrix_utils.cpp:9:
In file included from ./include/GPBoost/sparse_matrix_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from sparse_matrix_utils.cpp:9:
In file included from ./include/GPBoost/sparse_matrix_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
3 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c GP_utils.cpp -o GP_utils.o
In file included from GP_utils.cpp:9:
In file included from ./include/GPBoost/GP_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from GP_utils.cpp:9:
In file included from ./include/GPBoost/GP_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
3 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c DF_utils.cpp -o DF_utils.o
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c Vecchia_utils.cpp -o Vecchia_utils.o
In file included from Vecchia_utils.cpp:9:
In file included from ./include/GPBoost/Vecchia_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from Vecchia_utils.cpp:9:
In file included from ./include/GPBoost/Vecchia_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from Vecchia_utils.cpp:9:
In file included from ./include/GPBoost/Vecchia_utils.h:13:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
Vecchia_utils.cpp:477:17: warning: variable 'ctr_grad' set but not used [-Wunused-but-set-variable]
  477 |                         int ctr = 0, ctr_grad = 0;
      |                                      ^
In file included from Vecchia_utils.cpp:9:
In file included from ./include/GPBoost/Vecchia_utils.h:13:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1185:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1185 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& dist, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:134:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::InitializeGetDistanceForCovFct' requested here
  134 |                         InitializeGetDistanceForCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
Vecchia_utils.cpp:369:81: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::Matrix<double, -1, -1>>::RECompGP' requested here
  369 |                 re_comps_vecchia_cluster_i.push_back(std::shared_ptr<RECompGP<den_mat_t>>(new RECompGP<den_mat_t>(
      |                                                                                               ^
In file included from Vecchia_utils.cpp:9:
In file included from ./include/GPBoost/Vecchia_utils.h:13:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1191:30: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1191 |                                 GetDistanceForCovFct_ = [this](const int i, const int j, const T_mat& /* dist */, 
      |                                                          ^
./include/GPBoost/cov_fcts.h:1433:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1433 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& dist,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:135:4: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::InitializeGetDistanceForGradientCovFct' requested here
  135 |                         InitializeGetDistanceForGradientCovFct();
      |                         ^
./include/GPBoost/re_comp.h:780:60: note: in instantiation of member function 'GPBoost::CovFunction<Eigen::Matrix<double, -1, -1>>::CovFunction' requested here
  780 |                         cov_function_ = std::shared_ptr<CovFunction<T_mat>>(new CovFunction<T_mat>(cov_fct, shape, taper_range, taper_shape, taper_mu, apply_tapering, (int)coords.cols(), use_precomputed_dist_for_calc_cov));
      |                                                                                 ^
Vecchia_utils.cpp:369:81: note: in instantiation of member function 'GPBoost::RECompGP<Eigen::Matrix<double, -1, -1>>::RECompGP' requested here
  369 |                 re_comps_vecchia_cluster_i.push_back(std::shared_ptr<RECompGP<den_mat_t>>(new RECompGP<den_mat_t>(
      |                                                                                               ^
In file included from Vecchia_utils.cpp:9:
In file included from ./include/GPBoost/Vecchia_utils.h:13:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1439:39: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1439 |                                         GetDistanceForGradientCovFct_ = [this](const int i, const int j, const T_mat& /* dist */,
      |                                                                          ^
./include/GPBoost/cov_fcts.h:1446:38: warning: lambda capture 'this' is not used [-Wunused-lambda-capture]
 1446 |                                 GetDistanceForGradientCovFct_ = [this](const int /* i */, const int /* j */, const T_mat& /* dist */,
      |                                                                  ^
10 warnings generated.
clang++-19  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -pthread -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c CG_utils.cpp -o CG_utils.o
In file included from CG_utils.cpp:9:
In file included from ./include/GPBoost/CG_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:26:
In file included from ./include/Eigen/SparseCore:61:
./include/Eigen/src/SparseCore/TriangularSolver.h:273:13: warning: variable 'count' set but not used [-Wunused-but-set-variable]
  273 |       Index count = 0;
      |             ^
In file included from CG_utils.cpp:9:
In file included from ./include/GPBoost/CG_utils.h:12:
In file included from ./include/GPBoost/type_defs.h:20:
In file included from ./include/Eigen/Sparse:29:
In file included from ./include/Eigen/SparseLU:35:
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:78:9: warning: variable 'nsuper_et_post' set but not used [-Wunused-but-set-variable]
   78 |   Index nsuper_et_post = 0; // Number of relaxed snodes in postordered etree 
      |         ^
./include/Eigen/src/SparseLU/SparseLU_heap_relax_snode.h:79:9: warning: variable 'nsuper_et' set but not used [-Wunused-but-set-variable]
   79 |   Index nsuper_et = 0; // Number of relaxed snodes in the original etree 
      |         ^
In file included from CG_utils.cpp:9:
In file included from ./include/GPBoost/CG_utils.h:13:
In file included from ./include/GPBoost/re_comp.h:13:
./include/GPBoost/cov_fcts.h:1829:11: warning: unused variable 'dist_ij' [-Wunused-variable]
 1829 |                         double dist_ij = ((*coords_pred_ptr).row(i) - (*coords_ptr).row(j)).lpNorm<2>();
      |                                ^~~~~~~
4 warnings generated.
clang-19  -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -c cs_spsolve.c -o cs_spsolve.o
clang-19  -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -c cs_reach.c -o cs_reach.o
clang-19  -I"/home/hornik/tmp/R/include" -DNDEBUG -I./include -DEIGEN_MPL2_ONLY -DMM_PREFETCH=1 -DMM_MALLOC=1 -DUSE_SOCKET -DLGB_R_BUILD  -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -c cs_dfs.c -o cs_dfs.o
clang++-19 -std=gnu++17 -shared -L/home/hornik/tmp/R/lib -Wl,-O1 -o gpboost.so boosting/boosting.o boosting/gbdt.o boosting/gbdt_model_text.o boosting/gbdt_prediction.o boosting/prediction_early_stop.o io/bin.o io/config.o io/config_auto.o io/dataset.o io/dataset_loader.o io/file_io.o io/json11.o io/metadata.o io/parser.o io/train_share_states.o io/tree.o metric/dcg_calculator.o metric/metric.o objective/objective_function.o network/ifaddrs_patch.o network/linker_topo.o network/linkers_mpi.o network/linkers_socket.o network/network.o treelearner/data_parallel_tree_learner.o treelearner/feature_parallel_tree_learner.o treelearner/gpu_tree_learner.o treelearner/linear_tree_learner.o treelearner/serial_tree_learner.o treelearner/tree_learner.o treelearner/voting_parallel_tree_learner.o c_api.o gpboost_R.o re_model.o sparse_matrix_utils.o GP_utils.o DF_utils.o Vecchia_utils.o CG_utils.o cs_spsolve.o cs_reach.o cs_dfs.o -pthread -L/home/hornik/tmp/R/lib -lR
installing to /srv/hornik/tmp/CRAN_pretest/gpboost.Rcheck/00LOCK-gpboost/00new/gpboost/libs
** R
** data
** demo
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
*** copying figures
** building package indices
** testing if installed package can be loaded from temporary location
** checking absolute paths in shared objects and dynamic libraries
** testing if installed package can be loaded from final location
** testing if installed package keeps a record of temporary installation path
* DONE (gpboost)