用JNI编译bacnet-stack-0-8-0

问题描述

我需要配置“ bacnet-stack-0-8-0”项目以与JNI一起使用时需要帮助。 提到的项目是一个开源项目，我感兴趣的子项目是/ demo / gateway：

http://svn.code.sf.net/p/bacnet/code/branches/releases/bacnet-stack-0-8-0/

为了进行测试，我向上述项目中添加了HelloJNI.c文件，仅使用该文件创建了该项目（使用makefile），并成功从Java代码调用了sayHello（）函数，但是当我尝试添加sayHello时（）将JNI函数添加到demo / gateway / main.c，使项目失败，并显示以下错误：

/ usr / bin / ld：../../lib/libbacnet.a(bvlc.o）：制作共享库时，不能使用符号'bvlc_send_mpdu'的重定位R_X86_64_PC32；用-fPIC
重新编译 / usr / bin / ld：最终链接失败：值错误 collect2：错误：ld返回1退出状态 Makefile：65：目标'libmynativelib.so'的配方失败

demo / gateway / main.c：

#include "jni.h"

#include "HelloJNI.h"
#include ...

//code...

JNIEXPORT void JNICALL Java_HelloJNI_sayHello(jnienv *env,jobject thisObj) {
  printf("Hello World - From my C project!\n");
  return;
}

/** Main function of server demo.
 *
 * @see Device_Set_Object_Instance_Number,dlenv_init,Send_I_Am,*      datalink_receive,npdu_handler,*      dcc_timer_seconds,bvlc_maintenance_timer,*      Load_Control_State_Machine_Handler,handler_cov_task,*      tsm_timer_milliseconds
 *
 * @param argc [in] Arg count.
 * @param argv [in] Takes one argument: the Device Instance #.
 * @return 0 on success.
 */
int main(
    int argc,char *argv[])
{
    BACNET_ADDRESS src = {
        0
    };  /
...

网关makefile：

#Makefile to build BACnet Gateway Demonstration Application for the Linux Port

# tools - only if you need them.
# Most platforms have this already defined
# CC = gcc
#CC = gcc -fPIC -shared -I $(JAVA_HOME)/include -I $(JAVA_HOME)/include/linux -I /home/rami/eclipse-workspace/ForTests/src/tests/ -o /home/rami/eclipse-workspace/ForTests/src/tests/mynativelib.so 

    
# Executable file name
TARGET = bacgateway
#TARGET_EXT=.so

TARGET_SO=libmynativelib.so
LDFLAGS=-shared

INCLUDES_JNI=-I $(JAVA_HOME)/include -I $(JAVA_HOME)/include/linux -I /home/rami/eclipse-workspace/ForTests/src/

TARGET_BIN = ${TARGET}$(TARGET_EXT)

# put any overloaded or special built src files here,# so the linker uses these instead of the functions in the library
SRCS = main.c \
    HelloJNI.c \
    $(BACNET_OBJECT)/gw_device.c \
    $(BACNET_HANDLER)/h_routed_npdu.c \
    $(BACNET_HANDLER)/s_router.c \
    $(BACNET_OBJECT)/device.c \
    $(BACNET_OBJECT)/ai.c \
    $(BACNET_OBJECT)/ao.c \
    $(BACNET_OBJECT)/av.c \
    $(BACNET_OBJECT)/bi.c \
    $(BACNET_OBJECT)/bo.c \
    $(BACNET_OBJECT)/bv.c \
    $(BACNET_OBJECT)/csv.c \
    $(BACNET_OBJECT)/lc.c \
    $(BACNET_OBJECT)/lsp.c \
    $(BACNET_OBJECT)/ms-input.c \
    $(BACNET_OBJECT)/mso.c \
    $(BACNET_OBJECT)/msv.c \
    $(BACNET_OBJECT)/nc.c  \
    $(BACNET_OBJECT)/osv.c \
    $(BACNET_OBJECT)/piv.c \
    $(BACNET_OBJECT)/schedule.c  \
    $(BACNET_OBJECT)/trendlog.c \
    $(BACNET_OBJECT)/bacfile.c 

OBJS = ${SRCS:.c=.o}

DEFInes += -DBAC_ROUTING

CFLAGS  = $(WARNINGS) $(DEBUGGING) $(OPTIMIZATION) $(STANDARDS) $(INCLUDES) $(INCLUDES_JNI) $(DEFInes) -g

#all: ${BACNET_LIB_TARGET} Makefile ${TARGET_BIN}
all: ${BACNET_LIB_TARGET} Makefile ${TARGET_SO}

    
${TARGET_SO}: ${OBJS} Makefile ${BACNET_LIB_TARGET} 
    ${CC} -fPIC ${PFLAGS} ${CFLAGS} ${OBJS} ${LFLAGS} ${LDFLAGS} -o $@
    size $@
    
${TARGET_BIN}: ${OBJS} Makefile ${BACNET_LIB_TARGET} 
    ${CC} ${PFLAGS} ${OBJS} ${LFLAGS} -o $@
    size $@
    cp $@ ../../bin

lib: ${BACNET_LIB_TARGET}

${BACNET_LIB_TARGET}:
    ( cd ${BACNET_LIB_DIR} ; $(MAKE) clean ; $(MAKE) )

.c.o:
    ${CC} -c ${CFLAGS} $*.c -o $@

depend:
    rm -f .depend
    ${CC} -MM ${CFLAGS} *.c >> .depend

clean:
    rm -f core ${TARGET_BIN} ${OBJS} ${BACNET_LIB_TARGET} $(TARGET).map
    #rm -f $(OBJS) $(TARGET_SO)

include: .depend

解决方法

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