Turn utils/utf8 into a standalone library

Source/CMakeLists.txt

@@ -191,8 +191,7 @@ set(libdevilutionx_SRCS
   utils/str_cat.cpp
   utils/str_case.cpp
   utils/surface_to_clx.cpp
-  utils/timer.cpp
-  utils/utf8.cpp)
+  utils/timer.cpp)
 
 # These files are responsible for most of the runtime in Debug mode.
 # Apply some optimizations to them even in Debug mode to get reasonable performance.
@@ -319,6 +318,13 @@ if(SCREEN_READER_INTEGRATION AND WIN32)
   target_compile_definitions(libdevilutionx PRIVATE Tolk)
 endif()
 
+add_devilutionx_object_library(libdevilutionx_utf8
+  utils/utf8.cpp
+)
+target_link_libraries(libdevilutionx_utf8 PRIVATE
+  hoehrmann_utf8
+)
+
 target_link_libraries(libdevilutionx PUBLIC
   Threads::Threads
   DevilutionX::SDL
@@ -326,7 +332,7 @@ target_link_libraries(libdevilutionx PUBLIC
   libsmackerdec
   simpleini::simpleini
   tl
-  hoehrmann_utf8
+  libdevilutionx_utf8
   ${libdevilutionx_DEPS}
 )
 

test/CMakeLists.txt

@@ -41,11 +41,11 @@ set(tests
   stores_test
   str_cat_test
   timedemo_test
-  utf8_test
   writehero_test
 )
 set(
   standalone_tests
+  utf8_test
 )
 
 include(Fixtures.cmake)
@@ -64,8 +64,10 @@ foreach(test_target ${tests})
 endforeach()
 
 foreach(test_target ${standalone_tests})
-  target_link_libraries(${test_target} GTest::gtest_main)
+  target_link_libraries(${test_target} PRIVATE GTest::gtest_main)
   target_include_directories(${test_target} PRIVATE "${PROJECT_SOURCE_DIR}/Source")
 endforeach()
 
+target_link_libraries(utf8_test PRIVATE libdevilutionx_utf8)
+
 target_include_directories(writehero_test PRIVATE ../3rdParty/PicoSHA2)