fix link error on iOS simulator (#20172)

Author: minggo

cmake/Modules/CocosConfigDepend.cmake

@@ -24,7 +24,6 @@ macro(cocos2dx_depend)
     elseif(APPLE)
 
         include_directories(/System/Library/Frameworks)
-        find_library(ICONV_LIBRARY iconv)
         find_library(AUDIOTOOLBOX_LIBRARY AudioToolbox)
         find_library(FOUNDATION_LIBRARY Foundation)
         find_library(OPENAL_LIBRARY OpenAL)
@@ -36,7 +35,6 @@ macro(cocos2dx_depend)
             ${AUDIOTOOLBOX_LIBRARY}
             ${QUARTZCORE_LIBRARY}
             ${FOUNDATION_LIBRARY}
-            ${ICONV_LIBRARY}
             ${GAMECONTROLLER_LIBRARY}
             ${METAL_LIBRARY}
             )
@@ -49,13 +47,15 @@ macro(cocos2dx_depend)
             find_library(APPLICATIONSERVICES_LIBRARY ApplicationServices)
             find_library(IOKIT_LIBRARY IOKit)
             find_library(APPKIT_LIBRARY AppKit)
+            find_library(ICONV_LIBRARY iconv)
             list(APPEND PLATFORM_SPECIFIC_LIBS
                  ${COCOA_LIBRARY}
                  ${OPENGL_LIBRARY}
                  ${APPLICATIONSERVICES_LIBRARY}
                  ${IOKIT_LIBRARY}
                  ${COCOS_APPLE_LIBS}
                  ${APPKIT_LIBRARY}
+                 ${ICONV_LIBRARY}
                  )
         elseif(IOS)
             # Locate system libraries on iOS
@@ -68,7 +68,6 @@ macro(cocos2dx_depend)
             find_library(SECURITY_LIBRARY Security)
             find_library(CORE_GRAPHICS_LIBRARY CoreGraphics)
             find_library(AV_FOUNDATION_LIBRARY AVFoundation)
-            find_library(Z_LIBRARY z)
             find_library(WEBKIT_LIBRARY WebKit)
             list(APPEND PLATFORM_SPECIFIC_LIBS
                  ${UIKIT_LIBRARY}
@@ -80,9 +79,10 @@ macro(cocos2dx_depend)
                  ${SECURITY_LIBRARY}
                  ${CORE_GRAPHICS_LIBRARY}
                  ${AV_FOUNDATION_LIBRARY}
-                 ${Z_LIBRARY}
                  ${WEBKIT_LIBRARY}
                  ${COCOS_APPLE_LIBS}
+                 "/usr/lib/libz.dylib"
+                 "/usr/lib/libiconv.dylib"
                  )
         endif()
     endif()