Build building for iOS (#430)

@@ -104,6 +104,8 @@ message(STATUS "CMAKE_SYSTEM_PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")
 
 
 if(DEFINED ENV{SHERPA_ONNXRUNTIME_INCLUDE_DIR})
 if(DEFINED ENV{SHERPA_ONNXRUNTIME_INCLUDE_DIR})
   set(location_onnxruntime_header_dir $ENV{SHERPA_ONNXRUNTIME_INCLUDE_DIR})
   set(location_onnxruntime_header_dir $ENV{SHERPA_ONNXRUNTIME_INCLUDE_DIR})
+
+  include_directories(${location_onnxruntime_header_dir})
 else()
 else()
   find_path(location_onnxruntime_header_dir onnxruntime_cxx_api.h
   find_path(location_onnxruntime_header_dir onnxruntime_cxx_api.h
     PATHS
     PATHS
@@ -122,6 +124,11 @@ if(DEFINED ENV{SHERPA_ONNXRUNTIME_LIB_DIR})
   endif()
   endif()
   if(NOT EXISTS ${location_onnxruntime_lib})
   if(NOT EXISTS ${location_onnxruntime_lib})
     set(location_onnxruntime_lib $ENV{SHERPA_ONNXRUNTIME_LIB_DIR}/libonnxruntime.a)
     set(location_onnxruntime_lib $ENV{SHERPA_ONNXRUNTIME_LIB_DIR}/libonnxruntime.a)
+    if(NOT EXISTS ${location_onnxruntime_lib})
+      message(FATAL_ERROR "${location_onnxruntime_lib} cannot be found")
+    endif()
+    set(onnxruntime_lib_files $ENV{SHERPA_ONNXRUNTIME_LIB_DIR}/libonnxruntime.a)
+    message("Use static lib: ${onnxruntime_lib_files}")
   endif()
   endif()
   if(SHERPA_ONNX_ENABLE_GPU)
   if(SHERPA_ONNX_ENABLE_GPU)
     set(location_onnxruntime_cuda_lib $ENV{SHERPA_ONNXRUNTIME_LIB_DIR}/libonnxruntime_providers_cuda.so)
     set(location_onnxruntime_cuda_lib $ENV{SHERPA_ONNXRUNTIME_LIB_DIR}/libonnxruntime_providers_cuda.so)
@@ -153,6 +160,7 @@ if(SHERPA_ONNX_ENABLE_GPU)
 endif()
 endif()
 
 
 if(location_onnxruntime_header_dir AND location_onnxruntime_lib)
 if(location_onnxruntime_header_dir AND location_onnxruntime_lib)
+  if(NOT DEFINED onnxruntime_lib_files)
     add_library(onnxruntime SHARED IMPORTED)
     add_library(onnxruntime SHARED IMPORTED)
     set_target_properties(onnxruntime PROPERTIES
     set_target_properties(onnxruntime PROPERTIES
       IMPORTED_LOCATION ${location_onnxruntime_lib}
       IMPORTED_LOCATION ${location_onnxruntime_lib}
@@ -164,6 +172,7 @@ if(location_onnxruntime_header_dir AND location_onnxruntime_lib)
         IMPORTED_LOCATION ${location_onnxruntime_cuda_lib}
         IMPORTED_LOCATION ${location_onnxruntime_cuda_lib}
       )
       )
     endif()
     endif()
+  endif()
 else()
 else()
   message(STATUS "Could not find a pre-installed onnxruntime. Downloading pre-compiled onnxruntime")
   message(STATUS "Could not find a pre-installed onnxruntime. Downloading pre-compiled onnxruntime")
   download_onnxruntime()
   download_onnxruntime()