From 6bd5a7ced669d197a8d00235c21429e411f90bfa Mon Sep 17 00:00:00 2001
From: Umberto Lupo <umberto.lupo@gmail.com>
Date: Wed, 29 Dec 2021 10:31:26 +0100
Subject: [PATCH] Remove eigen submodule and various target_include_directories
 from CMakeLists

---
 .gitmodules          |  3 ---
 CMakeLists.txt       | 11 -----------
 gtda/externals/eigen |  1 -
 3 files changed, 15 deletions(-)
 delete mode 160000 gtda/externals/eigen

diff --git a/.gitmodules b/.gitmodules
index 9544dff8..7079c110 100644
--- a/.gitmodules
+++ b/.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
diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa4b4479..f475a3fe 100644
--- a/CMakeLists.txt
+++ b/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>)
diff --git a/gtda/externals/eigen b/gtda/externals/eigen
deleted file mode 160000
index 25424d91..00000000
--- a/gtda/externals/eigen
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 25424d91f60a9f858e7dc1c7936021cc1dd72019