Function proj_sys::proj_create_crs_to_crs_from_pj

pub unsafe extern "C" fn proj_create_crs_to_crs_from_pj(
    ctx: *mut PJ_CONTEXT, 
    source_crs: *const PJ, 
    target_crs: *const PJ, 
    area: *mut PJ_AREA, 
    options: *const *const c_char
) -> *mut PJ