remove submodules

CMakeLists.txt

@@ -37,7 +37,6 @@ include(CMakePackageConfigHelpers)
 include(Dart)
 include(FindFilesystem)
 include(GenerateExportHeader)
-include(AddGitSubmodule)
 
 set(CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_STANDARD 17)
@@ -105,18 +104,12 @@ find_package(Threads)
 
 find_package(libconfig QUIET)
 if(NOT libconfig_FOUND)
-	add_git_submodule(libconfig EXCLUDE_FROM_ALL)
-endif()
-
-find_package(gxrio QUIET)
-
-if(NOT gxrio_FOUND)
-	add_git_submodule(gxrio EXCLUDE_FROM_ALL)
+	add_subdirectory(libconfig EXCLUDE_FROM_ALL)
 endif()
 
 find_package(cifpp 5.0.0 REQUIRED)
 
-add_git_submodule(date EXCLUDE_FROM_ALL)
+add_subdirectory(date EXCLUDE_FROM_ALL)
 
 # The DSSP code is in a separate library, optionally to be used by others
 add_library(dssp_library OBJECT ${PROJECT_SOURCE_DIR}/src/DSSP.cpp)

cmake/AddGitSubmodule.cmake

-cmake_minimum_required(VERSION 3.19)
-
-function(add_git_submodule dir)
-	# add a Git submodule directory to CMake, assuming the
-	# Git submodule directory is a CMake project.
-	#
-	# Usage: in CMakeLists.txt
-	#
-	# include(AddGitSubmodule.cmake)
-	# add_git_submodule(mysubmod_dir)
-	find_package(Git REQUIRED)
-
-	if(NOT EXISTS ${dir}/CMakeLists.txt)
-		execute_process(COMMAND ${GIT_EXECUTABLE} submodule update --init --recursive -- ${dir}
-			WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
-			COMMAND_ERROR_IS_FATAL ANY)
-	endif()
-
-	set(ENABLE_TESTING OFF)
-
-	add_subdirectory(${dir} ${ARGV})
-endfunction(add_git_submodule)
\ No newline at end of file

gxrio @ a7bb5b5c

-Subproject commit a7bb5b5c4b6612215a78267b89e05c39a45429b5

libconfig @ ecbd393f

-Subproject commit ecbd393f79946b904b309b7cefb44bcfe926b75f