[cmake] Removed options OGS_LIB_[lib]=[System,...].

CMakeLists.txt

@@ -50,14 +50,6 @@ if(NOT WIN32 AND OGS_BUILD_SWMM)
     message(FATAL_ERROR "OGS_BUILD_SWMM requires Windows!")
 endif()
 
-# Third-party libraries, names come from Conan package names
-foreach(lib vtk qt petsc tfel)
-    set(OGS_LIB_${lib} "Default" CACHE STRING
-                                       "Which ${LIB} library should be used?"
-    )
-    set_property(CACHE OGS_LIB_${lib} PROPERTY STRINGS "Default" "System")
-endforeach()
-
 if(OGS_USE_PETSC)
     set(OGS_USE_MPI ON CACHE BOOL "Use MPI" FORCE)
 endif()

scripts/cmake/ConanSetup.cmake

@@ -81,14 +81,6 @@ endif()
 conan_check(VERSION ${ogs.minimum_version.conan})
 conan_config_install(ITEM ${PROJECT_SOURCE_DIR}/scripts/cmake/conan/config)
 
-message(STATUS "Third-party libraries:")
-foreach(LIB ${OGS_LIBS})
-    message(STATUS "  - OGS_LIB_${LIB} = ${OGS_LIB_${LIB}}")
-    if("${OGS_LIB_${LIB}}" STREQUAL System)
-        list(FILTER CONAN_REQUIRES EXCLUDE REGEX ${LIB})
-    endif()
-endforeach()
-
 set(CONAN_IMPORTS "")
 if(APPLE)
     set(CONAN_IMPORTS ${CONAN_IMPORTS} "lib, *.dylib* -> ./lib")