分离要组织的代码
我正在构建一个拉链应用程序，但它有一个声明，我想将其分离到另一个文件（compress-file.m）中，但只有当我分离文件时，我在使用变量进行编译时才会出现错误，请参阅：
[ubuntu@eeepc:~/Desktop] make
This is gnustep-make 2.0.2. Type 'make print-gnustep-make-help' for help.
Making all for app LeafZip...
Creating LeafZip.app/....
Compiling file main.m ...
main.m: In function ‘main’:
main.m:7: error: ‘PATH_MAX’ undeclared (first use in this function)
main.m:7: error: (Each undeclared identifier is reported only once
main.m:7: error: for each function it appears in.)
main.m:12: warning: implicit declaration of function ‘compressFile’
main.m:7: warning: unused variable ‘outFileName’
make[1]: *** [obj/main.o] Error 1
make: *** [LeafZip.all.app.variables] Error 2
另请参阅 main.m 文件的第 7 行：
char outFileName[PATH_MAX] = { 0 };
并查看 compress-file.m 的一些行：
#include <stdio.h>
#include <zlib.h>
#include <limits.h>
/* Buffer to hold data read */
char buf[BUFSIZ] = { 0 };
size_t bytes_read = 0;
gzFile *out = gzopen(outFileName, "wb");
我知道这是 Objective-C 扩展，但这只是因为当我解决这个问题时，我需要继续在 Objective-C 中进行开发 - C. 我需要做什么来纠正这个问题？
I'm building a zipper application, but it has a declaration that I want to separate it in another file (compress-file.m), but only when I separate the files I got an error when compiling with a variable, see it:
[ubuntu@eeepc:~/Desktop] make
This is gnustep-make 2.0.2. Type 'make print-gnustep-make-help' for help.
Making all for app LeafZip...
Creating LeafZip.app/....
Compiling file main.m ...
main.m: In function ‘main’:
main.m:7: error: ‘PATH_MAX’ undeclared (first use in this function)
main.m:7: error: (Each undeclared identifier is reported only once
main.m:7: error: for each function it appears in.)
main.m:12: warning: implicit declaration of function ‘compressFile’
main.m:7: warning: unused variable ‘outFileName’
make[1]: *** [obj/main.o] Error 1
make: *** [LeafZip.all.app.variables] Error 2
Also see the line 7 of main.m file:
char outFileName[PATH_MAX] = { 0 };
And see some lines of compress-file.m:
#include <stdio.h>
#include <zlib.h>
#include <limits.h>
/* Buffer to hold data read */
char buf[BUFSIZ] = { 0 };
size_t bytes_read = 0;
gzFile *out = gzopen(outFileName, "wb");
I know that is Objective-C extension, but it's only because when I solve this problem I will need to continue the development in Objective-C. What I need to do to correct this?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
PATH_MAX 并不总是通过包含
您是否在主程序中包含了
limits.h？如果没有，您需要这样做。PATH_MAX is not always defined by including
<limits.h>. If you want to use it, you probably need to fall back on the fragment:Did you even include
limits.hin your main program? If not, you need to do so.看起来
main.m需要#include。似乎还需要包含一个描述 compressFile 的标头（我猜您已将其移至compress-file.m中）。Looks like
main.mneeds to#include <limits.h>. It also seems like it will need to include a header describing compressFile (which I guess you moved intocompress-file.m.