Do not compile with iconv on windows

CMakeLists.txt

@@ -39,7 +39,7 @@ macro_ensure_out_of_source_build("${PROJECT_NAME} requires an out of source buil
 include(MacroAddPlugin)
 include(MacroCopyFile)
 
-find_package(iconv)
+find_package(Iconv)
 find_package(CMocka)
 if (CMOCKA_FOUND AND UNIT_TESTING)
     include(AddCMockaTest)

DefineOptions.cmake

@@ -1,3 +1,5 @@
-option(WITH_ICONV "Build csync with iconv support" ON)
+if ( NOT WIN32 )
+    option(WITH_ICONV "Build csync with iconv support" ON)
+endif()
 option(UNIT_TESTING "Build with unit tests" OFF)
 option(MEM_NULL_TESTS "Enable NULL memory testing" OFF)