Remove eigen submodule and various target_include_directories from CM…

…akeLists

.gitmodules

@@ -5,9 +5,6 @@
 [submodule "gtda/externals/hera"]
 	path = gtda/externals/hera
 	url = https://github.com/grey-narn/hera
-[submodule "gtda/externals/eigen"]
-	path = gtda/externals/eigen
-	url = https://gitlab.com/libeigen/eigen
 [submodule "gtda/externals/pybind11"]
 	path = gtda/externals/pybind11
 	url = https://github.com/pybind/pybind11

CMakeLists.txt

@@ -11,7 +11,6 @@ find_package(OpenMP)
 
 set(GUDHI_SRC_DIR "gtda/externals/gudhi-devel/src")
 set(HERA_DIR "gtda/externals/hera")
-set(EIGEN_DIR "gtda/externals/eigen")
 
 #######################################################################
 #                             Wasserstein                             #
@@ -127,8 +126,6 @@ target_include_directories(gtda_simplex_tree PRIVATE "${GUDHI_SRC_DIR}/Cech_comp
 target_include_directories(gtda_simplex_tree PRIVATE "${GUDHI_SRC_DIR}/Persistent_cohomology/include")
 target_include_directories(gtda_simplex_tree PRIVATE "${GUDHI_SRC_DIR}/Subsampling/include")
 target_include_directories(gtda_simplex_tree PRIVATE "${GUDHI_SRC_DIR}/python/include")
-target_include_directories(gtda_simplex_tree PRIVATE "${GUDHI_SRC_DIR}/Collapse/include")
-target_include_directories(gtda_simplex_tree PRIVATE "${EIGEN_DIR}")
 
 if(MSVC)
     target_compile_options(gtda_simplex_tree PUBLIC $<$<CONFIG:RELEASE>: /O2 /Wall /fp:strict>)
@@ -185,8 +182,6 @@ target_include_directories(gtda_witness_complex PRIVATE "${GUDHI_SRC_DIR}/Cech_c
 target_include_directories(gtda_witness_complex PRIVATE "${GUDHI_SRC_DIR}/Persistent_cohomology/include")
 target_include_directories(gtda_witness_complex PRIVATE "${GUDHI_SRC_DIR}/python/include")
 target_include_directories(gtda_witness_complex PRIVATE "${GUDHI_SRC_DIR}/common/include")
-target_include_directories(gtda_witness_complex PRIVATE "${GUDHI_SRC_DIR}/Collapse/include")
-target_include_directories(gtda_witness_complex PRIVATE "${EIGEN_DIR}")
 
 if(MSVC)
     target_compile_options(gtda_witness_complex PUBLIC $<$<CONFIG:RELEASE>: /O2 /Wall /fp:strict>)
@@ -216,8 +211,6 @@ target_include_directories(gtda_strong_witness_complex PRIVATE "${GUDHI_SRC_DIR}
 target_include_directories(gtda_strong_witness_complex PRIVATE "${GUDHI_SRC_DIR}/Persistent_cohomology/include")
 target_include_directories(gtda_strong_witness_complex PRIVATE "${GUDHI_SRC_DIR}/python/include")
 target_include_directories(gtda_strong_witness_complex PRIVATE "${GUDHI_SRC_DIR}/common/include")
-target_include_directories(gtda_strong_witness_complex PRIVATE "${GUDHI_SRC_DIR}/Collapse/include")
-target_include_directories(gtda_strong_witness_complex PRIVATE "${EIGEN_DIR}")
 
 if(MSVC)
     target_compile_options(gtda_strong_witness_complex PUBLIC $<$<CONFIG:RELEASE>: /O2 /Wall /fp:strict>)
@@ -248,8 +241,6 @@ target_include_directories(gtda_sparse_rips_complex PRIVATE "${GUDHI_SRC_DIR}/Pe
 target_include_directories(gtda_sparse_rips_complex PRIVATE "${GUDHI_SRC_DIR}/Rips_complex/include")
 target_include_directories(gtda_sparse_rips_complex PRIVATE "${GUDHI_SRC_DIR}/Subsampling/include")
 target_include_directories(gtda_sparse_rips_complex PRIVATE "${GUDHI_SRC_DIR}/python/include")
-target_include_directories(gtda_sparse_rips_complex PRIVATE "${GUDHI_SRC_DIR}/Collapse/include")
-target_include_directories(gtda_sparse_rips_complex PRIVATE "${EIGEN_DIR}")
 
 if(MSVC)
     target_compile_options(gtda_sparse_rips_complex PUBLIC $<$<CONFIG:RELEASE>: /O2 /Wall /fp:strict>)
@@ -278,8 +269,6 @@ target_include_directories(gtda_cech_complex PRIVATE "${GUDHI_SRC_DIR}/Cech_comp
 target_include_directories(gtda_cech_complex PRIVATE "${GUDHI_SRC_DIR}/Persistent_cohomology/include")
 target_include_directories(gtda_cech_complex PRIVATE "${GUDHI_SRC_DIR}/python/include")
 target_include_directories(gtda_cech_complex PRIVATE "${GUDHI_SRC_DIR}/common/include")
-target_include_directories(gtda_cech_complex PRIVATE "${GUDHI_SRC_DIR}/Collapse/include")
-target_include_directories(gtda_cech_complex PRIVATE "${EIGEN_DIR}")
 
 if(MSVC)
     target_compile_options(gtda_cech_complex PUBLIC $<$<CONFIG:RELEASE>: /O2 /Wall /fp:strict>)