diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9d7cf3dda..ec512ea35 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,7 @@ configure_file(${CMAKE_MODULE_PATH}/build.h.in ${CMAKE_BINARY_DIR}/build.h)
 set(conky_sources ${CMAKE_BINARY_DIR}/config.h ${CMAKE_BINARY_DIR}/build.h)
 
 # Finally, add some code
+add_subdirectory(lua)
 add_subdirectory(data)
 add_subdirectory(doc)
 
@@ -67,8 +68,6 @@ endif()
 
 add_subdirectory(src)
 
-add_subdirectory(lua)
-
 if(BUILD_TESTS)
   add_subdirectory(tests)
   enable_testing()
diff --git a/lua/CMakeLists.txt b/lua/CMakeLists.txt
index 6dbaa1bca..19b02a5a1 100644
--- a/lua/CMakeLists.txt
+++ b/lua/CMakeLists.txt
@@ -72,7 +72,7 @@ if(BUILD_LUA_IMLIB2)
   add_library(conky-imlib2 MODULE ${luaimlib2_src})
   set_target_properties(conky-imlib2 PROPERTIES OUTPUT_NAME "imlib2")
 
-  target_link_libraries(conky-imlib2 ${luaimlib2_libs} toluapp_lib_static )
+  target_link_libraries(conky-imlib2 ${luaimlib2_libs} toluapp_lib_static)
   set(lua_libs ${lua_libs} conky-imlib2)
 
   print_target_properties(conky-imlib2)
@@ -83,16 +83,14 @@ if(BUILD_LUA_CAIRO AND BUILD_LUA_IMLIB2)
     ${CMAKE_CURRENT_SOURCE_DIR})
   wrap_tolua(luacairo_imlib2_helper_src cairo_imlib2_helper.pkg)
 
-  set(imlib_helper_libs ${luacairo_libs} ${luaimlib2_libs} toluapp_lib_static)
-  # if(BUILD_I18N)
-  #   set(imlib_helper_libs ${imlib_helper_libs} -lintl)
-  # endif()
-
   add_library(conky-cairo_imlib2_helper MODULE ${luacairo_imlib2_helper_src})
   set_target_properties(conky-cairo_imlib2_helper
     PROPERTIES OUTPUT_NAME "cairo_imlib2_helper")
 
-  target_link_libraries(conky-cairo_imlib2_helper ${imlib_helper_libs})
+  target_link_libraries(conky-cairo_imlib2_helper
+    ${luacairo_libs}
+    ${luaimlib2_libs}
+    toluapp_lib_static)
   set(lua_libs ${lua_libs} conky-cairo_imlib2_helper)
 endif(BUILD_LUA_CAIRO AND BUILD_LUA_IMLIB2)
 
diff --git a/lua/libcairo_imlib2_helper.h b/lua/libcairo_imlib2_helper.h
index 45bffd775..d1571cc29 100644
--- a/lua/libcairo_imlib2_helper.h
+++ b/lua/libcairo_imlib2_helper.h
@@ -36,8 +36,11 @@
 #define gettext
 #endif
 
-#define NORM_ERR(Format, ...) \
-  fprintf(stderr, gettext(Format), ##__VA_ARGS__);
+// TODO: inject reference to conky logger
+// Lua allows modifying .so loading, so for each loaded library check if it has
+// some hardcoded set_logger function symbol, and call it to set per-library
+// reference to the global logger.
+#define NORM_ERR(Format, ...) fprintf(stderr, gettext(Format), ##__VA_ARGS__);
 
 void cairo_place_image(const char *file, cairo_t *cr, int x, int y, int width,
                        int height, double alpha) {
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d36f4dbc2..cd1b68f0a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -64,6 +64,7 @@ execute_process(
 
 set(conky_sources
   ${conky_sources}
+  logging.cc
   c++wrap.cc
   c++wrap.hh
   colour-settings.cc
diff --git a/src/darwin.mm b/src/darwin.mm
index 448816ca2..52611decc 100644
--- a/src/darwin.mm
+++ b/src/darwin.mm
@@ -87,11 +87,8 @@
 #include <time.h>
 #endif
 
-/* debugging defines */
-#undef NDEBUG
-
 /* (E)nhanced printf */
-#ifndef NDEBUG
+#if true // ifdef NDEBUG
 #include <cstdarg>
 void eprintf(const char *fmt, ...) {
   va_list args;
diff --git a/src/logger.hh b/src/logger.hh
index 25e570798..75c54cbac 100644
--- a/src/logger.hh
+++ b/src/logger.hh
@@ -43,6 +43,7 @@
 #include <ctime>
 #include <optional>
 #include <stdexcept>
+#include <string>
 #include <tuple>
 #include <type_traits>
 
diff --git a/src/logging.cc b/src/logging.cc
new file mode 100644
index 000000000..56a6aeb34
--- /dev/null
+++ b/src/logging.cc
@@ -0,0 +1,3 @@
+#include "logging.h"
+
+conky::log::logger DEFAULT_LOGGER("conky");
diff --git a/src/logging.h b/src/logging.h
index 6ae76c841..d90c4d2a2 100644
--- a/src/logging.h
+++ b/src/logging.h
@@ -32,6 +32,8 @@
 
 #include "logger.hh"
 
+#include <string>
+
 class fork_throw : public std::runtime_error {
  public:
   fork_throw() : std::runtime_error("Fork happened") {}
@@ -92,9 +94,9 @@ namespace _priv_error_print {
 template <typename... Args>
 inline std::string alloc_printf(const char *format, Args &&...args) {
   auto size = std::snprintf(nullptr, 0, format, args...);
-  std::string output(size + 1, '\0');
-  std::sprintf(&output[0], format, args...);
-  return output;
+  char output[size + 1];
+  std::snprintf(output, sizeof(output), format, args...);
+  return std::string(&output[0]);
 }
 inline std::string alloc_printf(const char *format) {
   return std::string(format);
@@ -103,6 +105,10 @@ inline std::string alloc_printf(const char *format) {
 
 class error : public std::runtime_error {
  public:
+  /// @brief Construct a new error object.
+  ///
+  /// @param Msg Already localized error message.
+  error(const std::string &msg) : std::runtime_error(msg) {}
   error(const char *msg) : std::runtime_error(_(msg)) {}
   template <typename... Args>
   error(const char *format, Args &&...args)
diff --git a/src/main.cc b/src/main.cc
index 16bda45cf..0e584e713 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -281,8 +281,6 @@ inline void reset_optind() {
 #endif
 }
 
-conky::log::logger DEFAULT_LOGGER("conky");
-
 int main(int argc, char **argv) {
   std::set_terminate(&handle_terminate);