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POAndroid NDK: How to get compiler architecture in Android.mk dynamically
 

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  1. POAndroid NDK: How to get compiler architecture in Android.mk dynamically
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    <p>I'm trying to configure Android.mk to cross compile native code to support different chipset namely armeabi, mips, and x86. I know I can configure Application.mk in the following way to compile the source code for different chip set:</p> <pre><code>APP_ABI := all </code></pre> <p>This will trigger Android-NDK's build script to compile the source code for all the chipsets. However, I want to dynamically tell Android.mk to look for different static library dependencies compiled with different chip set.</p> <pre><code># Get the architecture info ARCH := ???? include $(CLEAR_VARS) LOCAL_MODULE:= mylib LOCAL_SRC_FILES:= build/lib/libxxx_$(ARCH).a LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH) include $(PREBUILT_STATIC_LIBRARY) </code></pre> <p>Is this possible to do? If so, can anyone advice how to do so?</p> <blockquote> <p><strong>Update</strong>: I tried something like this in Application.mk:</p> <pre><code> APP_ABI := armeabi armeabi-v7a mips x64 </code></pre> <p>with Android.mk:</p> <pre><code># Get the architecture info ARCH := $(APP_ABI) include $(CLEAR_VARS) LOCAL_MODULE:= mylib LOCAL_SRC_FILES:= build/lib/libxxx_$(ARCH).a LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH) include $(PREBUILT_STATIC_LIBRARY) </code></pre> <p>but it errors with the following:</p> <pre><code> The LOCAL_SRC_FILES for a prebuilt static library should only contain one item </code></pre> <p>which makes sense. I want to pass APP_ABI := all in Application.mk and be able to dynamically reference it. Any ideas?</p> </blockquote>
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    1. COIf you look at ndk and other libs, they use defines such as `#ifdef __arm__` but I am not sure where it's defined or standardized
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