libmsc.so：文件明明存在，可是报"cannot find -lmsc"错误。

156****2525

环境：树莓派4b+Ubuntu Server 20.04
.so文件是提交工单申请的树莓派库文件

之前在VMware虚拟机（Ubuntu 16.04）里可以正常编译。

刚开始是这样报错的：

1. gcc -g -Wall -I./include robot.o file_str_handle.o iat_record.o request.o linuxrec.o speech_recognizer.o xtts.o cJSON.o awake.o -o bin/hr_robot -L./libs/RaspberryPi -lmsc -lrt -ldl -lpthread -lasound -lstdc++ -lcurl
   
2. /usr/bin/ld: skipping incompatible ./libs/RaspberryPi/libmsc.so when searching for -lmsc
   
3. /usr/bin/ld: skipping incompatible /usr/local/lib/libmsc.so when searching for -lmsc
   
4. /usr/bin/ld: cannot find -lmsc
   
5. collect2: error: ld returned 1 exit status
   
6. make: *** [Makefile:28: bin/hr_robot] Error 1

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我将libmsc.so这个文件放入./libs/RaspberryPi/目录下，然后将./libs/RaspberryPi/目录下的libmsc.so拷贝到/usr/local/lib/libmsc.so目录下，依然报错

1. gcc -g -Wall -I./include robot.o file_str_handle.o iat_record.o request.o linuxrec.o speech_recognizer.o xtts.o cJSON.o awake.o -o bin/hr_robot -L./libs/RaspberryPi -lmsc -lrt -ldl -lpthread -lasound -lstdc++ -lcurl
   
2. /usr/bin/ld: skipping incompatible ./libs/RaspberryPi/libmsc.so when searching for -lmsc
   
3. /usr/bin/ld: skipping incompatible /usr/local/lib/libmsc.so when searching for -lmsc
   
4. /usr/bin/ld: cannot find -lmsc
   
5. collect2: error: ld returned 1 exit status
   
6. make: *** [Makefile:28: bin/hr_robot] Error 1

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两个文件是存在的：

1. ubuntu@ubuntu:~/robot_with_awake$ ls -l /usr/local/lib/
   
2. total 28348
   
3. -rwxrwxrwx 1 root root   3823588 May 15 22:48 libmsc.so
   
4. -rwxr-xr-x 1 root root  25195313 May 15 21:37 libw_ivw.so
   
5. drwxrwsr-x 3 root staff     4096 Apr 23 23:03 python3.8
   
6. ubuntu@ubuntu:~/robot_with_awake$ ls -l ./libs/RaspberryPi/
   
7. total 3736
   
8. -rwxrwxrwx 1 ubuntu ubuntu 3823588 May 15 21:52 libmsc.so

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Makefile文件内容如（前面的行号是vim的）：

1. #common makefile header
   
2. 
   
3. LDLIBS = $(shell curl-config --libs)
   
4. 
   
5. 
   
6. DIR_INC = ./include
   
7. DIR_BIN = ./bin
   
8. DIR_LIB = ./libs
   
9. 
   
10. TARGET  = hr_robot
    
11. BIN_TARGET = $(DIR_BIN)/$(TARGET)
    
12. 
    
13. CROSS_COMPILE =
    
14. CFLAGS = -g -Wall -I$(DIR_INC)
    
15. 
    
16. #可根据实际需要修改，选择所需平台SDK，默认为x64或x86平台。
    
17. ifdef RaspberryPi
    
18. LDFLAGS := -L$(DIR_LIB)/RaspberryPi
    
19. else
    
20. LDFLAGS := -L$(DIR_LIB)/x64
    
21. endif
    
22. 
    
23. LDFLAGS += -lmsc -lrt -ldl -lpthread -lasound -lstdc++
    
24. 
    
25. OBJECTS := $(patsubst %.c,%.o,$(wildcard *.c))
    
26. 
    
27. $(BIN_TARGET) : $(OBJECTS)
    
28.         $(CROSS_COMPILE)gcc $(CFLAGS) $^ -o $@ $(LDFLAGS) $(LDLIBS)
    
29. 
    
30. %.o : %.c
    
31.         $(CROSS_COMPILE)gcc -c $(CFLAGS) $(LDLIBS) [        DISCUZ_CODE_15        ]lt; -o $@
    
32. clean:
    
33.         @rm -f *.o $(BIN_TARGET)
    
34. 
    
35. .PHONY:clean
    
36. 
    
37. #common makefile foot

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重启了好几遍都无效。

求大神支招。

树莓派是需要交叉编译的，有提工单编译过吗。