编译蓝牙应用时报错

• ch2inLF

  Posts: 1

  Joined: 2025-08-31 8:51

  2025-08-31 8:57

  我尝试写一个简单的例程来使用蓝牙模块

  Code: Select all

  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <bluetooth/bluetooth.h>
  #include <bluetooth/hci.h>
  #include <bluetooth/hci_lib.h>
  
  int main() {
      // 获取第一个可用的蓝牙适配器ID
      int dev_id = hci_get_route(NULL);
      if (dev_id < 0) {
          perror("没有找到蓝牙适配器");
          exit(1);
      }
      
      // 打开蓝牙设备
      int sock = hci_open_dev(dev_id);
      if (sock < 0) {
          perror("无法打开蓝牙适配器");
          exit(1);
      }
      
      printf("正在扫描蓝牙设备...\n");
      
      // 设置扫描参数
      int max_rsp = 255;
      int flags = IREQ_CACHE_FLUSH;
      inquiry_info *ii = (inquiry_info*)malloc(max_rsp * sizeof(inquiry_info));
      
      // 开始扫描
      int num_rsp = hci_inquiry(dev_id, 8, max_rsp, NULL, &ii, flags);
      if (num_rsp < 0) {
          perror("扫描失败");
          close(sock);
          exit(1);
      }
      
      char addr[19] = {0};
      char name[248] = {0};
      
      printf("找到 %d 个设备:\n", num_rsp);
      printf("地址\t\t\t名称\n");
      
      // 遍历并显示找到的设备
      for (int i = 0; i < num_rsp; i++) {
          ba2str(&(ii+i)->bdaddr, addr);
          memset(name, 0, sizeof(name));
          
          // 尝试获取设备名称
          if (hci_read_remote_name(sock, &(ii+i)->bdaddr, sizeof(name), name, 0) < 0) {
              strcpy(name, "[未知]");
          }
          
          printf("%s\t%s\n", addr, name);
      }
      
      // 清理资源
      free(ii);
      close(sock);
      
      return 0;
  }

  使用如下makefile编译

  Code: Select all

  # 设置交叉编译器路径和前缀
  CROSS_COMPILE := /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-
  # 定义工具链
  CC := $(CROSS_COMPILE)gcc
  CXX := $(CROSS_COMPILE)g++
  LD := $(CROSS_COMPILE)ld
  AR := $(CROSS_COMPILE)ar
  STRIP := $(CROSS_COMPILE)strip
  
  # 包含路径设置
  SYSROOT_PATH = /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/arm-none-linux-gnueabihf/libc
  KERNEL_DIR = /home/ch2/work/Lyra-sdk/kernel
  SRC_DIR = /home/ch2/work/easy_km
  
  INCLUDE_FLAGS = -I${SRC_DIR}/include
  
  # 目标名称
  TARGET := test_ble
  
  # 源文件
  SRCS := test_ble.c
  OBJS := $(SRCS:.c=.o)
  
  # 编译选项
  CFLAGS = --sysroot=$(SYSROOT_PATH) $(INCLUDE_FLAGS) -Wall -O2 
  
  # 库路径和库名称 - 修复这里
  LIB_PATHS = -L${SRC_DIR}/lib/usr/lib
  LIBS = -lc -lbluetooth
  
  LDFLAGS = $(LIB_PATHS) $(LIBS)
  
  # 默认目标
  all: $(TARGET)
  
  # 链接目标文件生成可执行文件
  $(TARGET): $(OBJS)
  	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
  # 编译C源文件为目标文件
  %.o: %.c
  	$(CC) $(CFLAGS) -c $< -o $@
  
  # 清理生成的文件
  clean:
  	rm -f $(TARGET) $(OBJS)
  
  
  # 声明伪目标
  .PHONY: all clean install

  libbluetooth.so和libc.so从板卡的/usr/lib拷贝到编译用的主机上，链接时报错如下

  Code: Select all

  /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-gcc --sysroot=/home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/arm-none-linux-gnueabihf/libc -I/home/ch2/work/easy_km/include -Wall -O2  -o test_ble test_ble.o -L/home/ch2/work/easy_km/lib/usr/lib -lc -lbluetooth
  /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/10.3.1/../../../../arm-none-linux-gnueabihf/bin/ld: /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/arm-none-linux-gnueabihf/libc/usr/lib/crt1.o: in function `_start':
  /data/jenkins/workspace/GNU-toolchain/arm-10/src/glibc/csu/../sysdeps/arm/start.S:113: undefined reference to `__libc_csu_fini'
  /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/10.3.1/../../../../arm-none-linux-gnueabihf/bin/ld: /data/jenkins/workspace/GNU-toolchain/arm-10/src/glibc/csu/../sysdeps/arm/start.S:120: undefined reference to `__libc_csu_init'
  /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/10.3.1/../../../../arm-none-linux-gnueabihf/bin/ld: /home/ch2/work/easy_km/lib/usr/lib/libc.so: undefined reference to `_dl_audit_symbind_alt@GLIBC_PRIVATE'
  /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/10.3.1/../../../../arm-none-linux-gnueabihf/bin/ld: /home/ch2/work/easy_km/lib/usr/lib/libc.so: undefined reference to `__nptl_change_stack_perm@GLIBC_PRIVATE'
  /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/10.3.1/../../../../arm-none-linux-gnueabihf/bin/ld: /home/ch2/work/easy_km/lib/usr/lib/libc.so: undefined reference to `__nptl_set_robust_list_avail@GLIBC_PRIVATE'
  /home/ch2/work/Lyra-sdk/prebuilts/gcc/linux-x86/arm/gcc-arm-10.3-2021.07-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/10.3.1/../../../../arm-none-linux-gnueabihf/bin/ld: /home/ch2/work/easy_km/lib/usr/lib/libc.so: undefined reference to `_dl_audit_preinit@GLIBC_PRIVATE'
  collect2: error: ld returned 1 exit status
  make: *** [Makefile:39: test_ble] Error 1

  请问该如何解决

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