Unbundles utfcpp dependency.

patch by Lilah Tascheter <lilah@lunabee.space>

diff --git a/3rdparty/CMakeLists.txt b/3rdparty/CMakeLists.txt
index 46c0c26e1..8317e3248 100644
--- a/3rdparty/CMakeLists.txt
+++ b/3rdparty/CMakeLists.txt
@@ -3,19 +3,12 @@

 include(CheckCompilerFlagsOutput)
 
-SET(UTF8PROC_INSTALL OFF CACHE BOOL "Enable installation of utf8proc" FORCE)
-add_subdirectory(utf8proc EXCLUDE_FROM_ALL)
-set_property(TARGET utf8proc PROPERTY FOLDER "3rdparty")
-if(NOT MSVC)
-	set(_supported_utf8proc_cxx_compiler_flags "")
-
-	# -Wassign-enum
-	check_compiler_flags_output("-Werror -Wno-assign-enum -Wno-error=cpp" COMPILER_TYPE CXX   OUTPUT_FLAGS "-Wno-assign-enum" OUTPUT_VARIABLE _supported_utf8proc_cxx_compiler_flags APPEND)
-
-	if (NOT _supported_utf8proc_cxx_compiler_flags STREQUAL "")
-		string(REPLACE " " ";" _supported_utf8proc_cxx_compiler_flags "${_supported_utf8proc_cxx_compiler_flags}")
-		target_compile_options(utf8proc PRIVATE ${_supported_utf8proc_cxx_compiler_flags})
-	endif()
-endif()
+pkg_check_modules(UTF8PROC REQUIRED libutf8proc)
+add_library(utf8proc UNKNOWN IMPORTED)
+set_target_properties(utf8proc PROPERTIES
+	IMPORTED_LOCATION ${UTF8PROC_LIBRARIES}
+	INTERFACE_INCLUDE_DIRECTORIES ${UTF8PROC_INCLUDE_DIRS}
+	INTERFACE_LINK_LIBRARIES ${UTF8PROC_LINK_LIBRARIES}
+)
 
 add_subdirectory(launchinfo EXCLUDE_FROM_ALL)
 set_property(TARGET launchinfo PROPERTY FOLDER "3rdparty")
diff --git a/lib/framework/wzstring.cpp b/lib/framework/wzstring.cpp
index 8bad73540..139daaf0d 100644
--- a/lib/framework/wzstring.cpp
+++ b/lib/framework/wzstring.cpp
@@ -29,8 +29,8 @@
 // "By default, Visual Studio always returns the value 199711L for the __cplusplus preprocessor macro."
 #define UTF_CPP_CPLUSPLUS 201703L
 #endif
-#include <utfcpp/source/utf8.h>
-#include <utf8proc/utf8proc.h>
+#include <utf8cpp/utf8.h>
+#include <utf8proc.h>
 
 WzUniCodepoint WzUniCodepoint::fromASCII(unsigned char charLiteral)
 {