Remove include_directories and replace with target_include_directories

also added automatic directory traversal.
no cmake file needs to be modified when adding a new directory in src/

Author: mortinger91

ProjectFolder/CMakeLists.txt

@@ -11,15 +11,13 @@ project(
 
 include(cmake/StandardSettings.cmake)
 
-set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/int")
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin/lib")
 
-include_directories (${CMAKE_SOURCE_DIR}/src)
-
-add_executable (${PROJECT_NAME} src/main.cpp)
+add_executable(${PROJECT_NAME} src/main.cpp)
 add_subdirectory(src)
 target_link_libraries(
 	${PROJECT_NAME}

ProjectFolder/cmake/StandardSettings.cmake

@@ -2,5 +2,5 @@
 # Default settings
 #
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)
-set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+# set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_EXPORT_COMPILE_COMMANDS 1)

ProjectFolder/src/CMakeLists.txt

@@ -1,6 +1,27 @@
-# Add any new directory that you add in ProjectFolder/src here 
-file(GLOB_RECURSE sources utility/*.cpp)
-add_library(${PROJECT_NAME}_LIB ${sources})
+set(sources_list
+	# Add here any file you want to add manually which is not in a
+	# src/directory.
+)
+
+# Getting all the .cpp files in any src/directory.
+file(GLOB directories */)
+foreach(dir ${directories})
+    if(IS_DIRECTORY ${dir})
+		string(FIND ${dir} "/" last_slash_pos REVERSE)
+		math(EXPR string_start "${last_slash_pos}+1")
+		string(SUBSTRING ${dir} ${string_start} -1 dir_stripped)
+		file(GLOB_RECURSE sources ${dir_stripped}/*.cpp)
+		list(APPEND sources_list ${sources})
+    endif()
+endforeach()
+
+add_library(${PROJECT_NAME}_LIB ${sources_list})
+
+target_include_directories(
+	${PROJECT_NAME}_LIB
+	PUBLIC
+		${CMAKE_SOURCE_DIR}/src
+)
 
 target_compile_definitions(
 	${PROJECT_NAME}_LIB
@@ -33,7 +54,7 @@ target_link_libraries(
 		# Add libraries to link to the binary here
 )
 
-set_target_properties(
-	${PROJECT_NAME}_LIB
-		PROPERTIES ENABLE_EXPORTS ON
-)
+# set_target_properties(
+# 	${PROJECT_NAME}_LIB
+# 		# Add any target properties here
+# )

README.md

@@ -37,7 +37,9 @@ To run tests in a Docker container:<br>
 
 <h2>Notes:</h2>
 
-- When creating a new folder in ProjectFolder/src<br>
-also add its name in ProjectFolder/src/CMakeLists.txt
+- To add new files create a new folder in ProjectFolder/src,<br>
+no CMake files need to be modified.<br>
+You need to re-run "build_cmake".
 - To add a new test just add a new test_***.cpp file<br>
-in ProjectFolder/test.
+in ProjectFolder/test.<br>
+You need to re-run "build_cmake".