Fix finding SimpleIni

The version in Ubuntu 22.04 comes without `ConvertUTF.{h,c}`.

We actually do not need `ConvertUTF.{h,c}` and starting from
v4.19 it is possible to tell SimpleIni to not include it
by setting `SI_NO_CONVERSION`.

Sets `SI_NO_CONVERSION` and raises the minimum required SimpleIni
version to 4.19.

CMake/Dependencies.cmake

@@ -168,7 +168,7 @@ if(WIN32 AND NOT UWP_LIB)
 endif()
 
 if(NOT DEFINED DEVILUTIONX_SYSTEM_SIMPLEINI)
-  find_package(simpleini QUIET)
+  find_package(simpleini 4.19 QUIET)
   if(simpleini_FOUND)
     message("-- Found simpleini")
   else()
@@ -178,9 +178,7 @@ if(NOT DEFINED DEVILUTIONX_SYSTEM_SIMPLEINI)
 endif()
 dependency_options("simpleini" DEVILUTIONX_SYSTEM_SIMPLEINI ON DEVILUTIONX_STATIC_SIMPLEINI)
 if(DEVILUTIONX_SYSTEM_SIMPLEINI)
-  if(NOT simpleini_FOUND)
-    find_package(simpleini REQUIRED)
-  endif()
+  find_package(simpleini 4.19 REQUIRED)
 else()
   add_subdirectory(3rdParty/simpleini)
 endif()

CMake/finders/Findsimpleini.cmake

@@ -7,9 +7,18 @@ find_path(simpleini_INCLUDE_DIR SimpleIni.h
 find_library(simpleini_LIBRARY simpleini
              HINTS ${PC_simpleini_LIBDIR} ${PC_simpleini_LIBRARY_DIRS})
 
+
+if (NOT simpleini_INCLUDE_DIR STREQUAL "simpleini_INCLUDE_DIR-NOTFOUND")
+  file(READ "${simpleini_INCLUDE_DIR}/SimpleIni.h" _version_header_content)
+  if(_version_header_content MATCHES "<th>Version *<td>([0-9.]+)")
+    set(simpleini_VERSION "${CMAKE_MATCH_1}")
+  endif()
+endif()
+
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(simpleini DEFAULT_MSG
-                                  simpleini_INCLUDE_DIR simpleini_LIBRARY)
+find_package_handle_standard_args(simpleini
+                                  REQUIRED_VARS simpleini_INCLUDE_DIR simpleini_LIBRARY
+                                  VERSION_VAR simpleini_VERSION)
 
 if(simpleini_FOUND)
   add_library(simpleini INTERFACE)

Source/options.cpp

@@ -8,6 +8,7 @@
 #include <fstream>
 
 #define SI_SUPPORT_IOSTREAMS
+#define SI_NO_CONVERSION
 #include <SimpleIni.h>
 
 #include "control.h"