LOCAL_EXPORT_C_INCLUDES

最新推荐文章于 2022-08-09 14:44:59 发布
翻译 最新推荐文章于 2022-08-09 14:44:59 发布 · 3.9k 阅读 · 1

本文介绍了Android NDK中LOCAL_EXPORT_CFLAGS与LOCAL_CFLAGS的区别，通过示例展示了如何在一个模块中定义宏，并在另一个模块中使用这些宏。这对于理解Android模块间的依赖关系非常重要。
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LOCAL_EXPORT_C_INCLUDES和LOCALC_INCLUDES 、LOCAL_EXPORT_CFLAGS和 LOCAL_CFLAGS ，差别是编译某模块是，如果它依赖别的模块，那么别的模块的LOCAL_EXPORT*类的值，会自动加入到本模块。（但是反过来不会有作用）

例如，定义了一个模块， 定义宏FOO

   include $(CLEAR_VARS)
   LOCAL_MODULE := foo
   LOCAL_SRC_FILES := foo/foo.c
   LOCAL_EXPORT_CFLAGS :=-DFOO=1
   include $(BUILD_STATIC_LIBRARY)

另外一个模块bar使用foo模块

   include $(CLEAR_VARS)
   LOCAL_MODULE := bar
   LOCAL_SRC_FILES := bar.c
   LOCAL_CFLAGS :=-DBAR=2
   LOCAL_STATIC_LIBRARIES := foo
   include $(BUILD_SHARED_LIBRARY)

那么bar.c可以同时使用 FOO BAR这两个宏

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