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我想在使用Android.mk的靜態庫中鏈接，但出現以下錯誤。如何在Android.mk中包含靜態第三方庫？
/home/pep/tools/crystax-ndk-10.3.2/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++ -Wl,--gc-sections -Wl,-z,nocopyreloc --sysroot=/home/pep/tools/crystax-ndk-10.3.2/platforms/android-21/arch-arm -Wl,-rpath-link=/home/pep/tools/crystax-ndk-10.3.2/platforms/android-21/arch-arm/usr/lib -Wl,-rpath-link=/home/pep/workspace/elm/src/agents/viga/obj/local/armeabi-v7a /home/pep/workspace/elm/src/agents/viga/obj/local/armeabi-v7a/objs/van/main.o -lgcc /home/pep/workspace/elm/src/agents/viga/obj/local/armeabi-v7a/libecom.so /home/pep/workspace/elm/src/agents/viga/obj/local/armeabi-v7a/libgnustl_shared.so -no-canonical-prefixes -march=armv7-a -Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -fPIE -pie -mthumb -L/home/pep/tools/ros-android-ndk/roscpp_android/output/roscpp_android_ndk/lib /home/pep/tools/crystax-ndk-10.3.2/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/libsupc++.a -L/home/pep/tools/crystax-ndk-10.3.2/sources/crystax/empty /home/pep/tools/crystax-ndk-10.3.2/sources/crystax/libs/armeabi-v7a/thumb/libcrystax.so -lc -o /home/pep/workspace/elm/src/agents/viga/obj/local/armeabi-v7a/van
/home/pep/workspace/elm/src/agents/viga/jni/main.cpp:34: error: undefined reference to 'ros::init(int&, char**, std::string const&, unsigned int)'
collect2: error: ld returned 1 exit status
這樣看來，該庫是不被鏈接中，沒有-l，但據我所知，這是被包括正確使用LOCAL_STATIC_LIBRARIES。我試過將它列爲libroscpp以及-lroscpp。這是Android.mk。
LOCAL_PATH := $(call my-dir)
MY_ELM_HOME := /home/pep/workspace/elm/src
MY_ELM_INCL := /home/pep/workspace/elm/src/includes
MY_ROS_HOME := /home/pep/tools/ros-android-ndk/roscpp_android/output/roscpp_android_ndk
MY_COMMONS_INCL := $(MY_ELM_HOME)/includes/commons
MY_COMMONS_LIBS := $(MY_ELM_HOME)/libs/commons/libs/armeabi-v7a
MY_ROS_INCL := $(MY_ROS_HOME)/include
MY_ROS_LIBS := $(MY_ROS_HOME)/lib
include $(CLEAR_VARS)
LOCAL_MODULE := mycom
LOCAL_SRC_FILES := $(MY_COMMONS_LIBS)/libecom.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := van
LOCAL_C_INCLUDES := $(MY_ELM_INCL)
LOCAL_C_INCLUDES += $(MY_ROS_INCL)
LOCAL_SRC_FILES := main.cpp
LOCAL_CPPFLAGS := -std=gnu++14
LOCAL_CPP_FEATURES := rtti exceptions
LOCAL_LDLIBS := -L$(MY_ROS_LIBS)
LOCAL_SHARED_LIBRARIES := mycom
LOCAL_STATIC_LIBRARIES := libroscpp
LOCAL_STATIC_LIBRARIES += libroscpp_serialization
LOCAL_STATIC_LIBRARIES += librosconsole
include $(BUILD_EXECUTABLE)
$(call import-module,boost/1.59.0)
我使用-lroscpp與LOCAL_LDLIBS試過，但我得到一個錯誤，將訊息傳送說使用LOCAL_STATIC_LIBRARIES。我確定這個路徑對於靜態庫是正確的。
這裏是libroscpp.a中的符號。
$ nm -Ca ./libroscpp.a | grep "ros::init"
... <snip>
00000001 T ros::init(int&, char**, std::string const&, unsigned int)
... <snip>
我也嘗試重新排序庫，但無濟於事。
想法？
爲包括靜態庫（* .a）有是一個PREBUILD_STATIC_LIBRARY，它與共享的一樣使用，那就是你需要使用像libecom.so –
這樣的模塊。如果你想做出答案，我會標記它。 – Ender