renamed directory external to libs

.gitmodules

-[submodule "externals/fmt"]
-	path = externals/fmt
+[submodule "libs/fmt"]
+	path = libs/fmt
 	url = https://github.com/fmtlib/fmt.git

CMakeLists.txt

@@ -17,10 +17,10 @@ dune_enable_all_packages(MODULE_LIBRARIES amdis fmt)
 add_subdirectory("bin")
 add_subdirectory("cmake/modules")
 add_subdirectory("doc")
-add_subdirectory("externals")
+add_subdirectory("examples" EXCLUDE_FROM_ALL)
+add_subdirectory("libs")
 add_subdirectory("src")
 add_subdirectory("test")
-add_subdirectory("examples" EXCLUDE_FROM_ALL)
 
 target_link_libraries(amdis fmt)
 

externals/CMakeLists.txt → libs/CMakeLists.txt

@@ -12,7 +12,7 @@ if (GIT_FOUND AND EXISTS "${PROJECT_SOURCE_DIR}/.git")
   endif()
 endif()
 
-if (NOT EXISTS "${PROJECT_SOURCE_DIR}/externals/fmt/CMakeLists.txt")
+if (NOT EXISTS "${PROJECT_SOURCE_DIR}/libs/fmt/CMakeLists.txt")
   message(FATAL_ERROR "The submodules were not downloaded! GIT_SUBMODULE was turned off or failed. Please update submodules and try again.")
 endif()
 
@@ -23,7 +23,7 @@ dune_library_add_sources(fmt SOURCES
 )
 
 target_include_directories(fmt PUBLIC
-  $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}/externals/fmt/include>)
+  $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}/libs/fmt/include>)
 
 install(FILES
   fmt/include/fmt/core.h