未定义参考GCC [英] Undefined reference gcc
问题描述
当我尝试编译使用GCC Ubuntu的我的计划,我得到这些错误:
When I try to compile my program on ubuntu using gcc, i get these errors:
main.c中:(文字+ 0x162):未定义引用 json_parse
json_value_free
。main.c中:(文字+ 0x182):未定义引用
main.c:(.text+0x162): undefined reference to
json_parse' main.c:(.text+0x182): undefined reference to
json_value_free'
但是,这些功能都包含在一个名为json.h文件,该文件导入我main.c中和我包括我的海湾合作委员会的命令。
However, these functions are included in a file called json.h, which I import in main.c and which I include in my gcc command.
任何人都得到了线索?
推荐答案
您不应该编制了json.h标题。未定义引用的不的编译器错误,这是一个的链接错误的。这意味着你要么不包含json_value_free文件编译到code,或者没有链接到包含它的库。你应该做的,而不是试图编译头文件本身不是行动。
You should not compile the "json.h" header. The undefined reference is not a compiler error, it's a linker error. It means you have either not compiled the file containing json_value_free to your code, or haven't linked to the library containing it. You should do either action instead of trying to compile the header file itself.
所以,如果你有一个单独的json.c文件,您必须编译并连结到您的main.c文件。试试(我假设GCC):
So, if you have a separate json.c file, you have to compile and link it also to your main.c file. Try (I assume GCC):
gcc -o myprog main.c json.c
这篇关于未定义参考GCC的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!