静态库和头在与海湾合作委员会的另一个目录 [英] Static libraries and headers in another directories with GCC
问题描述
我一直在寻找这里如何使用GCC静态库,并且说明是pretty清晰(鄙视的事实,我不得不重写阶乘的功能)做的事:我有一个函数(fact.c),功能(fact.h)的头,和主要功能(main.c中),他们都在我的主目录。
fact.h
INT事实(INT);
fact.c
INT
事实上(INT F){
如果(F == 0)
返回1;
其他
收益率(F *事实(F - 1));
}
的main.c
的#include<&stdio.h中GT;
#包括fact.h
INT主(INT ARGC,CHAR *的argv [])
{
的printf(%d个\\ N,其实(3));
返回0;
}
所以,我必须首先生成目标文件(阶段1)...
$ GCC -c fact.c -o fact.o
...然后生成静态库(阶段2)...
$ AR RCS libfact.a fact.o
...后来做静态库链接过程(第3阶段)...
$ gcc的-static的main.c -L。 -lfact -o事实
...最后运行的程序(第4阶段也是最后一个)
$ ./fact
我的问题如下。让我们假设我的计划会这么大,我别无选择,不是把头一个头目录(/include/fact.h)和静态库也将在另一个目录(/lib/libfact.a)。在这种情况下,如何编译和/或本程序的code会改变吗?
编辑/问题解决了:一是main.c中以包括在另一个叫做包括目录中的头球攻门被纠正。记住这一点,在这种情况下,无论是.c文件都在主目录
的main.c
的#include<&stdio.h中GT;
#包括包括/ fact.h
INT主(INT ARGC,CHAR *的argv [])
{
的printf(%d个\\ N,其实(3));
返回0;
}
二,生成另一个目录(第2阶段)的静态库,这是我做了什么:
$ AR RCS的lib / libfact.a fact.o
下面是你的答案,
$ gcc的-static的main.c -L。 -lfact -o事实上
-L将目录添加到目录列表中搜索-l
其在你给的链接。如果你把正确SEACH方向和低的搜索范围,这将不会是一个问题。否则它是不会编译code。因为code不知道哪里是头。
I was looking here how to do static libraries using GCC, and the explanation is pretty clear (despise the fact I had to rewrite the factorial function): I have a function (fact.c), the header of the function (fact.h), and the main function (main.c), all of them in my home directory.
fact.h
int fact (int);
fact.c
int
fact (int f) {
if ( f == 0 )
return 1;
else
return (f * fact ( f - 1 ));
}
main.c
#include <stdio.h>
#include "fact.h"
int main(int argc, char *argv[])
{
printf("%d\n", fact(3));
return 0;
}
So I had first to generate the object file (phase 1)...
$ gcc -c fact.c -o fact.o
...then to generate the static library (phase 2)...
$ ar rcs libfact.a fact.o
...later to do the static library linking process (phase 3)...
$ gcc -static main.c -L. -lfact -o fact
...and finally run the program (phase 4 and final)
$ ./fact
My question is the following. Let's suppose my program will be so big that I had no alternative than put the headers in a header directory (/include/fact.h) and the static libraries will also be in another directory (/lib/libfact.a). In that case, how the compilation and/or the code of this program will change?
Edit/Problem Solved: First, the main.c was corrected in order to include a header in another directory called include. Remember that, in this case, both of the .c files are in the main directory.
main.c
#include <stdio.h>
#include "include/fact.h"
int main(int argc, char *argv[])
{
printf("%d\n", fact(3));
return 0;
}
Second, to generate the static library in another directory (phase 2), this is what I had done:
$ ar rcs lib/libfact.a fact.o
Here is your answer,
$ gcc -static main.c -L. -lfact -o fact
-L Add directory to the list of directories to be searched for -l
Its in the link that you gave. If you put the seach direction correctly and low search range, it will not be a problem. Otherwise it is not going to compile the code. Because code did not know where is the header.
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