如何更改头文件和库文件的搜索路径？

nathaniel

我知道有一个环境变量LD_LIBRARY_PATH是用来更改动态库的路径吧？但是头文件和一些静态的库文件的搜索路径又怎样更改呢？

daemeon

C_INCLUDE_PATH

dancingpig

<>的是默认的" "可以用相对和绝对路径好象

rickxbx

Post by nathaniel
我知道有一个环境变量LD_LIBRARY_PATH是用来更改动态库的路径吧？但是头文件和一些静态的库文件的搜索路径又怎样更改呢？

man gcc:

1. 
   
2.        LIBRARY_PATH
   
3.            The value of LIBRARY_PATH is a colon-separated list of directories,
   
4.            much like PATH.  When configured as a native compiler, GCC tries
   
5.            the directories thus specified when searching for special linker
   
6.            files, if it can't find them using GCC_EXEC_PREFIX.  Linking using
   
7.            GCC also uses these directories when searching for ordinary
   
8.            libraries for the -l option (but directories specified with -L come
   
9.            first).
   
10. 
    
11. 
    
12.        CPATH
    
13.        C_INCLUDE_PATH
    
14.        CPLUS_INCLUDE_PATH
    
15.        OBJC_INCLUDE_PATH
    
16.            Each variable's value is a list of directories separated by a spe-
    
17.            cial character, much like PATH, in which to look for header files.
    
18.            The special character, "PATH_SEPARATOR", is target-dependent and
    
19.            determined at GCC build time.  For Microsoft Windows-based targets
    
20.            it is a semicolon, and for almost all other targets it is a colon.
    
21. 
    
22.            CPATH specifies a list of directories to be searched as if speci-
    
23.            fied with -I, but after any paths given with -I options on the com-
    
24.            mand line.  This environment variable is used regardless of which
    
25.            language is being preprocessed.
    
26. 
    
27.            The remaining environment variables apply only when preprocessing
    
28.            the particular language indicated.  Each specifies a list of direc-
    
29.            tories to be searched as if specified with -isystem, but after any
    
30.            paths given with -isystem options on the command line.
    
31. 
    
32.            In all these variables, an empty element instructs the compiler to
    
33.            search its current working directory.  Empty elements can appear at
    
34.            the beginning or end of a path.  For instance, if the value of
    
35.            CPATH is ":/special/include", that has the same effect as
    
36.            -I. -I/special/include.
    

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yj1804

如果是gcc,编译得时候用-I可以指定头文件,