Link GLES2 to ios

[silas]

Qt 5.12.10 for ios need to link GLES lib but same code from android built fail. How to link EGL/GLES2 for iOS ? Thanks!

# Check if we have a GLES-only build
# On dynamic builds, this property is also "GL"
IF(${Qt5Gui_OPENGL_IMPLEMENTATION} MATCHES "GLES")
     MESSAGE(STATUS "Building an OpenGL ES build (${Qt5Gui_OPENGL_IMPLEMENTATION})")
     IF( ANDROID )
         SET(STEL_GLES_LIBS EGL GLESv2) # success on Qt Android

     ELSE()
         SET(STEL_GLES_LIBS EGL GLESv2) # error in iOS Qt
#         SET(STEL_GLES_LIBS Qt5::Gui_EGL Qt5::Gui_GLESv2) # pc
     ENDIF()
ELSE()
     MESSAGE(STATUS "Building an OpenGL build")
ENDIF()