我对C比较陌生
我正在努力将 Chipmunk 物理引擎移植到我的项目中，但是，当我尝试运行 ndk-build 时，我得到以下...
/Users/user/Development/Android/android-ndk-r8c/toolchains/arm-linux-androideabi-4.6/prebuilt/darwin-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: ./obj/local/armeabi/objs/chipmunk_shared/src/cpSpace.o: in function cpSpaceInit:jni/src/cpSpace.c:103: error: undefined reference to 'cpBBTreeNew' /Users/user/Development/Android/android-ndk-r8c/toolchains/arm-linux-androideabi-4.6/prebuilt/darwin-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: ./obj/local/armeabi/objs/chipmunk_shared/src/cpSpace.o: in function cpSpaceInit:jni/src/cpSpace.c:104: error: undefined reference to 'cpBBTreeNew' /Users/user/Development/Android/android-ndk-r8c/toolchains/arm-linux-androideabi-4.6/prebuilt/darwin-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: ./obj/local/armeabi/objs/chipmunk_shared/src/cpSpace.o: in function cpSpaceInit:jni/src/cpSpace.c:105: error: undefined reference to 'cpBBTreeSetVelocityFunc'
当我为那个类搜索时，我看到...
~/Documents/workspace/Chipmunk$ grep -r cpBBTreeNew jni/ jni//include/chipmunk/cpSpatialIndex.h:cpSpatialIndex* cpBBTreeNew(cpSpatialIndexBBFunc bbfunc, cpSpatialIndex *staticIndex); jni//src/cpBBTree.c:cpBBTreeNew(cpSpatialIndexBBFunc bbfunc, cpSpatialIndex *staticIndex) jni//src/cpSpace.c: space->staticShapes = cpBBTreeNew((cpSpatialIndexBBFunc)cpShapeGetBB, NULL); jni//src/cpSpace.c: space->activeShapes = cpBBTreeNew((cpSpatialIndexBBFunc)cpShapeGetBB, space->staticShapes);
所以我知道 .h 文件在那里，我确认它是通过另一个 .h 类加载的。我不认为这是问题所在，但这是我的 Android.mk...
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := chipmunk_shared
LOCAL_MODULE_FILENAME := libchipmunk
LOCAL_SRC_FILES := \
src/chipmunk.c \
....
src/cpVect.c
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include/chipmunk
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include/chipmunk
LOCAL_CFLAGS := -std=c99
include $(BUILD_SHARED_LIBRARY)
########### Static library
include $(CLEAR_VARS)
LOCAL_MODULE := chipmunk_static
LOCAL_MODULE_FILENAME := libchipmunk
LOCAL_SRC_FILES := \
src/chipmunk.c \
....
src/cpVect.c
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include/chipmunk
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include/chipmunk
LOCAL_CFLAGS := -std=c99
include $(BUILD_STATIC_LIBRARY)
有人能帮忙吗？
最佳答案
听起来像是链接时缺少 cpBBTree.o。 LOCAL_SRC_FILES 中是否缺少 cpBBTree.c？
关于C NDK ndk-build 无法识别 header 错误 : undefined reference to 'cpBBTreeNew' ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14504763/