[LinearSolver] Remove CSparse-based linear solvers (#4258)

* [LinearSolver.Direct] Remove CSparse based solvers

* Remove csparse extlib

* Fetchable CSparseSolvers plugin

* Remove references of SparseLUSolver

* Remove references to SparseCholeskySolver

* Remove csparse

* Try to fix on Linux

* Update the compat

* [LinearSolver.Direct] Remove CSparse based solvers

* Fix direct solver

Sofa/Component/Compat/src/SofaSparseSolver/SparseCholeskySolver.h

@@ -23,4 +23,6 @@
 
 #include <sofa/component/linearsolver/direct/SparseCholeskySolver.h>
 
-SOFA_DISABLED_HEADER("v22.06", "v23.06", "sofa/component/linearsolver/direct/SparseCholeskySolver.h")
+SOFA_PRAGMA_ERROR( \
+    "This header has been DISABLED since v23.12. " \
+    "To fix this error you must use the CSparseSolvers plugins. " )

Sofa/Component/Compat/src/SofaSparseSolver/SparseLUSolver.h

@@ -23,4 +23,6 @@
 
 #include <sofa/component/linearsolver/direct/SparseLUSolver.h>
 
-SOFA_DISABLED_HEADER("v22.06", "v23.06", "sofa/component/linearsolver/direct/SparseLUSolver.h")
+SOFA_PRAGMA_ERROR( \
+    "This header has been DISABLED since v23.12. " \
+    "To fix this error you must use the CSparseSolvers plugins. " )

Sofa/Component/Compat/src/SofaSparseSolver/SparseLUSolver.inl

@@ -23,4 +23,6 @@
 
 #include <sofa/component/linearsolver/direct/SparseLUSolver.inl>
 
-SOFA_DISABLED_HEADER("v22.06", "v23.06", "sofa/component/linearsolver/direct/SparseLUSolver.inl")
+SOFA_PRAGMA_ERROR( \
+    "This header has been DISABLED since v23.12. " \
+    "To fix this error you must use the CSparseSolvers plugins. " )

Sofa/Component/LinearSolver/Direct/CMakeLists.txt

@@ -50,14 +50,10 @@ set(SOURCE_FILES
     ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/MatrixLinearSystem[BTDMatrix].cpp
     ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/PrecomputedLinearSolver.cpp
     ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/SVDLinearSolver.cpp
-    ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/SparseCholeskySolver.cpp
     ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/SparseCommon.cpp
     ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/SparseLDLSolver.cpp
-    ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/SparseLUSolver.cpp
     ${SOFACOMPONENTLINEARSOLVERDIRECT_SOURCE_DIR}/TypedMatrixLinearSystem[BTDMatrix].cpp
 )
-add_subdirectory(extlibs/csparse)
-sofa_set_01(SOFA_COMPONENT_LINEARSOLVER_DIRECT_HAVE_CSPARSE VALUE TRUE)
 
 sofa_find_package(metis QUIET) # Unix users can have an installed version of metis
 if(NOT metis_FOUND)
@@ -75,7 +71,7 @@ sofa_find_package(Sofa.Component.LinearSolver.Iterative REQUIRED) # Only for Mat
 
 add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${SOURCE_FILES} ${WRAPPER_FILES})
 target_link_libraries(${PROJECT_NAME} PUBLIC Sofa.Simulation.Core Sofa.Component.LinearSolver.Iterative)
-target_link_libraries(${PROJECT_NAME} PUBLIC metis csparse)
+target_link_libraries(${PROJECT_NAME} PUBLIC metis)
 target_link_libraries(${PROJECT_NAME} PUBLIC Threads::Threads)
 
 sofa_create_package_with_targets(

Sofa/Component/LinearSolver/Direct/Sofa.Component.LinearSolver.DirectConfig.cmake.in

@@ -8,14 +8,10 @@ find_package(Sofa.Component.LinearSolver.Iterative QUIET REQUIRED)
 find_package(Threads QUIET REQUIRED)
 
 set(SOFA_COMPONENT_LINEARSOLVER_DIRECT_HAVE_METIS @SOFA_COMPONENT_LINEARSOLVER_DIRECT_HAVE_METIS@)
-set(SOFA_COMPONENT_LINEARSOLVER_DIRECT_HAVE_CSPARSE @SOFA_COMPONENT_LINEARSOLVER_DIRECT_HAVE_CSPARSE@)
 
 if(SOFA_COMPONENT_LINEARSOLVER_DIRECT_HAVE_METIS)
     find_package(Metis QUIET REQUIRED HINTS "${CMAKE_CURRENT_LIST_DIR}/..")
 endif()
-if(SOFA_COMPONENT_LINEARSOLVER_DIRECT_HAVE_CSPARSE)
-    find_package(CSparse QUIET REQUIRED HINTS "${CMAKE_CURRENT_LIST_DIR}/..")
-endif()
 
 if(NOT TARGET @PROJECT_NAME@)
     include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")