NDK构建链接STL路径错误

如何解决NDK构建链接STL路径错误

当我在win10中使用ndk-build时，出现了问题

 make: *** No rule to make target 'C:\Users\li\AppData\Local\Android\Sdk\ndk\21.3.6528147\build\\..\sources\cxx-stl\llvm-libc++\include\fstream',needed by 'C:/src/ncnn-android-mobilenetssd/app/build/intermediates/ndkBuild/debug/obj/local/arm64-v8a/objs-debug/mobilenetssdncnn/mobilenetssdncnn_jni.o'.  Stop.

正确的路径是“ C：\ Users \ li \ AppData \ Local \ Android \ Sdk \ ndk \ 21.3.6528147 \ sources \ cxx-stl \ llvm-libc ++ \ include \ fstream”，为什么会出现“ \ build \ ..“ ？？ Android.mx

LOCAL_PATH := $(call my-dir)

NCNN_INSTALL_PATH := ${LOCAL_PATH}/ncnn-android-vulkan-lib

include $(CLEAR_VARS)
LOCAL_MODULE := ncnn
LOCAL_SRC_FILES := $(NCNN_INSTALL_PATH)/$(TARGET_ARCH_ABI)/libncnn.a
include $(PREBUILT_STATIC_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE := glslang
LOCAL_SRC_FILES := $(NCNN_INSTALL_PATH)/$(TARGET_ARCH_ABI)/libglslang.a
include $(PREBUILT_STATIC_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE := SPIRV
LOCAL_SRC_FILES := $(NCNN_INSTALL_PATH)/$(TARGET_ARCH_ABI)/libSPIRV.a
include $(PREBUILT_STATIC_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE := OGLCompiler
LOCAL_SRC_FILES := $(NCNN_INSTALL_PATH)/$(TARGET_ARCH_ABI)/libOGLCompiler.a
include $(PREBUILT_STATIC_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE := OSDependent
LOCAL_SRC_FILES := $(NCNN_INSTALL_PATH)/$(TARGET_ARCH_ABI)/libOSDependent.a
include $(PREBUILT_STATIC_LIBRARY)

include $(CLEAR_VARS)

LOCAL_MODULE := mobilenetssdncnn
LOCAL_SRC_FILES := mobilenetssdncnn_jni.cpp

LOCAL_C_INCLUDES := $(NCNN_INSTALL_PATH)/include $(NCNN_INSTALL_PATH)/include/ncnn ${LOCAL_PATH}

LOCAL_STATIC_LIBRARIES := ncnn glslang SPIRV OGLCompiler OSDependent

LOCAL_CFLAGS := -O2 -fvisibility=hidden -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -ffast-math
LOCAL_CPPFLAGS := -O2 -fvisibility=hidden -fvisibility-inlines-hidden -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -ffast-math
LOCAL_LDFLAGS += -Wl,--gc-sections

LOCAL_CFLAGS += -fopenmp
LOCAL_CPPFLAGS += -fopenmp
LOCAL_LDFLAGS += -static-openmp -fopenmp

LOCAL_LDLIBS := -lz -llog -ljnigraphics -lvulkan -landroid

include $(BUILD_SHARED_LIBRARY)