diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2696117..c27350e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,4 +23,5 @@ enable_driver_support()
 
 ##########################################
 
-add_subdirectory(src)
+add_subdirectory_and_get_targets("src" SRC_TARGETS)
+targets_set_warnings_as_errors(${SRC_TARGETS})
diff --git a/cmake/utils.cmake b/cmake/utils.cmake
index 28bded3..cdcf0ea 100644
--- a/cmake/utils.cmake
+++ b/cmake/utils.cmake
@@ -1,3 +1,5 @@
+include_guard()
+
 ##########################################
 
 macro(set_artifact_directory directory)
@@ -31,4 +33,75 @@ endmacro()
 macro(enable_driver_support)
   list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/external/FindWDK/cmake")
   find_package(WDK REQUIRED)
-endmacro()
\ No newline at end of file
+endmacro()
+
+##########################################
+
+function(target_set_warnings_as_errors target)
+  get_target_property(target_type ${target} TYPE)
+  if(("${target_type}" STREQUAL "INTERFACE_LIBRARY") OR ("${target_type}" STREQUAL "UTILITY"))
+    return()
+  endif()
+
+  set(compile_options)
+
+  if(MSVC)
+    set(compile_options /W4 /WX)
+    if (CLANG)
+      set(compile_options ${compile_options} -Xclang -Wconversion)
+    endif()
+  else()
+    # lots of warnings and all warnings as errors
+    set(compile_options -Wall -Wextra -Wconversion -pedantic -Werror)
+  endif()
+
+  target_compile_options(${target} PRIVATE
+    $<$<COMPILE_LANGUAGE:C>:$<$<CONFIG:RELEASE>:${compile_options}>>
+    $<$<COMPILE_LANGUAGE:CXX>:$<$<CONFIG:RELEASE>:${compile_options}>>
+  )
+endfunction()
+
+##########################################
+
+function(targets_set_warnings_as_errors)
+  foreach(target ${ARGV})
+    target_set_warnings_as_errors(${target})
+  endforeach()
+endfunction()
+
+##########################################
+
+function(get_all_targets var)
+    set(targets)
+    get_all_targets_recursive(targets ${CMAKE_CURRENT_SOURCE_DIR})
+    set(${var} ${targets} PARENT_SCOPE)
+endfunction()
+
+##########################################
+
+macro(get_all_targets_recursive targets dir)
+    get_property(subdirectories DIRECTORY ${dir} PROPERTY SUBDIRECTORIES)
+    foreach(subdir ${subdirectories})
+        get_all_targets_recursive(${targets} ${subdir})
+    endforeach()
+
+    get_property(current_targets DIRECTORY ${dir} PROPERTY BUILDSYSTEM_TARGETS)
+    list(APPEND ${targets} ${current_targets})
+endmacro()
+
+##########################################
+
+macro(list_difference list_a list_to_remove result)
+  set(${result} ${list_a})
+  list(REMOVE_ITEM ${result} ${list_to_remove})
+endmacro()
+
+##########################################
+
+macro(add_subdirectory_and_get_targets directory targets)
+  get_all_targets(EXISTING_TARGETS)
+  add_subdirectory(${directory})
+  get_all_targets(ALL_TARGETS)
+
+  list_difference("${ALL_TARGETS}" "${EXISTING_TARGETS}" ${targets})
+endmacro()
diff --git a/src/runner/main.cpp b/src/runner/main.cpp
index 058de4b..a272a11 100644
--- a/src/runner/main.cpp
+++ b/src/runner/main.cpp
@@ -18,7 +18,7 @@ std::filesystem::path get_current_path()
 	return selfdir;
 }
 
-int main(const int argc, char* argv[])
+int main(const int /*argc*/, char* /*argv*/[])
 {
 	const auto manager = OpenSCManagerA(nullptr, nullptr, SC_MANAGER_ALL_ACCESS);
 	if (manager == nullptr)