这个怎么编译？

yjchlove

我添加了readline库。所以加了 -lreadline参数，可以编译通过。

1. sgq@sgq-PC-MY28VCZEE:~$ gcc ladsh.c -o ladsh -lreadline
   
2. ladsh.c: In function ‘getCommand’:
   
3. ladsh.c:85:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘char *’ [-Wformat]
   
4. ladsh.c:116:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘char *’ [-Wformat]
   
5. ladsh.c: In function ‘main’:
   
6. ladsh.c:726:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘char *’ [-Wformat]
   
7. ladsh.c:731:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘char *’ [-Wformat]
   

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但是这次需要用客户指定的gcc来编译，找不到这些头文件？有什么办法？

1. sgq@sgq-PC-MY28VCZEE:~$ /usr/src/alta/toolchain/buildroot-2009.05/build_mips/staging_dir/usr/bin/mips-linux-uclibc-gcc
   
2. ladsh.c -o ladsh -lreadline
   
3. ladsh.c:15:30: error: readline/history.h: No such file or directory
   
4. ladsh.c:16:31: error: readline/readline.h: No such file or directory
   
5. ladsh.c: In function 'getCommand':
   
6. ladsh.c:107: warning: assignment makes pointer from integer without a cast
   
7. sgq@sgq-PC-MY28VCZEE:~$

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谢谢

0xC1988

编译交叉编译所需的readline库，然后编译的时候指定一下

yjchlove

兄弟，我也知道指定一下，我是问，怎么指定？

指定方法，我不懂哈。

lxyscls_cu

找不到头文件，gcc -Ireadline/ 把这个头文件目录的路径给它

0xC1988

-L libpath -llib -Iincludepath

yjchlove

1. sgq@sgq-PC-MY28VCZEE:/$ find . -name "readline.h" -print
   
2. ./usr/include/readline/readline.h
   
3. ./usr/local/include/readline/readline.h
   
4. ./usr/local/src/readline-6.2/readline.h
   
5. find: `./usr/src/alta/toolchain/buildroot-2009.05/p4_5350_back0830_6.1.3/common/apps/dropbear-0.52': Permission denied
   
6. ./usr/src/alta/toolchain/buildroot-2009.05/build_mips/bash-3.2/lib/readline/readline.h
   
7. ^C
   
8. sgq@sgq-PC-MY28VCZEE:/$ cd ~
   
9. sgq@sgq-PC-MY28VCZEE:~$ /usr/src/alta/toolchain/buildroot-2009.05/build_mips/staging_dir/usr/bin/mips-linux-uclibc-gcc ladsh.c -o ladsh -I/usr/include/readline
   
10. ladsh.c:15:30: error: readline/history.h: No such file or directory
    
11. ladsh.c:16:31: error: readline/readline.h: No such file or directory
    
12. ladsh.c: In function 'getCommand':
    
13. ladsh.c:107: warning: assignment makes pointer from integer without a cast
    
14. sgq@sgq-PC-MY28VCZEE:~$ /usr/src/alta/toolchain/buildroot-2009.05/build_mips/staging_dir/usr/bin/mips-linux-uclibc-gcc ladsh.c -o ladsh -I/usr/local/include/readline
    
15. ladsh.c:15:30: error: readline/history.h: No such file or directory
    
16. ladsh.c:16:31: error: readline/readline.h: No such file or directory
    
17. ladsh.c: In function 'getCommand':
    
18. ladsh.c:107: warning: assignment makes pointer from integer without a cast
    
19. sgq@sgq-PC-MY28VCZEE:~$ /usr/src/alta/toolchain/buildroot-2009.05/build_mips/staging_dir/usr/bin/mips-linux-uclibc-gcc ladsh.c -o ladsh -I/usr/local/src/readline-6.2
    
20. ladsh.c:15:30: error: readline/history.h: No such file or directory
    
21. ladsh.c:16:31: error: readline/readline.h: No such file or directory
    
22. ladsh.c: In function 'getCommand':
    
23. ladsh.c:107: warning: assignment makes pointer from integer without a cast
    
24. sgq@sgq-PC-MY28VCZEE:~$

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lxyscls_cu

奇怪了

#include ""改成#include <>？

难道是这个GCC不吃？{:3_189:}

0xC1988

/usr/src/alta/toolchain/buildroot-2009.05/build_mips/staging_dir/usr/bin/mips-linux-uclibc-gcc ladsh.c -o ladsh -I/usr/include/
这样子大概能找到头文件，但是估计链接的时候会出错

lxyscls_cu

0xC1988 发表于 2012-10-11 10:31
/usr/src/alta/toolchain/buildroot-2009.05/build_mips/staging_dir/usr/bin/mips-linux-uclibc-gcc ladsh ...

对对对，我搞错了

文件里面是"readline/xxx.h"，不需要加这个readline的子目录了

ld的时候制定-L就应该可以吧

0xC1988

lxyscls_cu 发表于 2012-10-11 10:49
对对对，我搞错了

文件里面是"readline/xxx.h"，不需要加这个readline的子目录了

对，用-L指定链接库的目录，再加上-l指定连接的库

其实可以看看buildboot里面是不是提供了readline的选项，有的话可以方便很多