Turn utils/file_util into a standalone library

Source/CMakeLists.txt

@@ -179,7 +179,6 @@ set(libdevilutionx_SRCS
   utils/cl2_to_clx.cpp
   utils/console.cpp
   utils/display.cpp
-  utils/file_util.cpp
   utils/format_int.cpp
   utils/language.cpp
   utils/logged_fstream.cpp
@@ -315,6 +314,24 @@ if(SCREEN_READER_INTEGRATION AND WIN32)
   target_compile_definitions(libdevilutionx PRIVATE Tolk)
 endif()
 
+add_devilutionx_object_library(libdevilutionx_file_util
+  utils/file_util.cpp
+)
+target_link_libraries(libdevilutionx_file_util PRIVATE
+  DevilutionX::SDL
+  libdevilutionx_log
+  ${DEVILUTIONX_PLATFORM_LINK_LIBRARIES}
+)
+
+add_library(libdevilutionx_log INTERFACE)
+target_include_directories(libdevilutionx_log INTERFACE
+  ${PROJECT_SOURCE_DIR}/Source)
+target_link_libraries(libdevilutionx_log INTERFACE
+  DevilutionX::SDL
+  fmt::fmt
+  libdevilutionx_strings
+)
+
 add_devilutionx_object_library(libdevilutionx_parse_int
   utils/parse_int.cpp
 )
@@ -343,6 +360,7 @@ target_link_libraries(libdevilutionx PUBLIC
   libsmackerdec
   simpleini::simpleini
   tl
+  libdevilutionx_file_util
   libdevilutionx_parse_int
   libdevilutionx_strings
   libdevilutionx_utf8

Source/utils/log.hpp

@@ -15,7 +15,7 @@
 namespace devilution {
 
 // Local definition to fix compilation issue due to header conflict.
-[[noreturn]] void app_fatal(std::string_view);
+[[noreturn]] extern void app_fatal(std::string_view);
 
 enum class LogCategory {
 	Application = SDL_LOG_CATEGORY_APPLICATION,

test/CMakeLists.txt

@@ -24,7 +24,6 @@ set(tests
   drlg_l3_test
   drlg_l4_test
   effects_test
-  file_util_test
   format_int_test
   inv_test
   lighting_test
@@ -42,6 +41,7 @@ set(tests
   writehero_test
 )
 set(standalone_tests
+  file_util_test
   parse_int_test
   str_cat_test
   utf8_test
@@ -67,6 +67,10 @@ foreach(test_target ${standalone_tests})
   target_include_directories(${test_target} PRIVATE "${PROJECT_SOURCE_DIR}/Source")
 endforeach()
 
+add_library(app_fatal_for_testing OBJECT app_fatal_for_testing.cpp)
+target_sources(app_fatal_for_testing INTERFACE $<TARGET_OBJECTS:app_fatal_for_testing>)
+
+target_link_libraries(file_util_test PRIVATE libdevilutionx_file_util app_fatal_for_testing)
 target_link_libraries(parse_int_test PRIVATE libdevilutionx_parse_int)
 target_link_libraries(str_cat_test PRIVATE libdevilutionx_strings)
 target_link_libraries(utf8_test PRIVATE libdevilutionx_utf8)

test/app_fatal_for_testing.cpp

@@ -0,0 +1,12 @@
+#include <iostream>
+#include <string_view>
+
+namespace devilution {
+
+[[noreturn]] void app_fatal(std::string_view str)
+{
+	std::cerr << "app_fatal: " << str << std::endl;
+	std::abort();
+}
+
+} // namespace devilution