1.下載
官方下載地址
Modutils (2.4.27):

https://www.kernel.org/pub/linux/utils/kernel/modutils/v2.4/

2.解壓
tar -zxvf modutils-2.4.27.tar.gz

3.生成makefile
./configure

4.make
4.1 錯誤：
In file included from obj_kallsyms.c:26:
./../include/util.h:42: warning: built-in function ‘log’ declared as non-function
obj_kallsyms.c: In function ‘obj32_kallsyms’:
obj_kallsyms.c:204: error: lvalue required as left operand of assignment
obj_kallsyms.c:279: error: lvalue required as left operand of assignment
make[1]: *** [obj_kallsyms.o] 錯誤 1
make[1]: Leaving directory '/usr/src/redflag/BUILD/modutils-2.4.27/obj'
make: *** [all] 錯誤 2

修改：
（1）將obj_kallsyms.c檔案修改如下
將204行的：
 a_hdr = (struct kallsyms_header *) osec->contents =xmalloc(osec->header.sh_size);
改成：
  osec->contents = xmalloc(osec->header.sh_size);
  a_hdr = (struct kallsyms_header *) osec->contents;

將279行的：
  a_hdr = (struct kallsyms_header *) osec->contents = xrealloc(a_hdr, a_hdr->total_size);
改成：
  osec->contents = xrealloc(a_hdr, a_hdr->total_size);
  a_hdr = (struct kallsyms_header *) osec->contents;

 
4.2 繼續make，再錯誤
In file included from insmod.c:79:
./../include/util.h:42: warning: built-in function ‘log’ declared as non-function
insmod.c: In function ‘add_symbols_from’:
insmod.c:278: error: lvalue required as left operand of assignment
make[1]: *** [insmod.o] 錯誤 1
make[1]: Leaving directory ‘/usr/src/redflag/BUILD/modutils-2.4.27/insmod’
make: *** [all] 錯誤 2
error: Bad exit status from /var/tmp/rpm-tmp.36012 (%build)
 
修改：
將insmod.c檔案的第278行
 ((char *)s->name) += 8;
改成
 s->name = (void *)((long)(s->name)+8);
再繼續編譯。

4.3 繼續報錯：
In file included from genksyms.c:32:
./../include/util.h:42: warning: built-in function ‘log’ declared as non-function
genksyms.c:48: error: static declaration of ‘errors’ follows non-static declaration
./../include/util.h:43: error: previous declaration of ‘errors’ was here
make[1]: *** [genksyms.o] 錯誤 1
make[1]: Leaving directory ‘/usr/src/redflag/BUILD/modutils-2.4.27/genksyms’
make: *** [all] 錯誤 2
error: Bad exit status from /var/tmp/rpm-tmp.97956 (%build)
 
修改：
將genksyms.c第48行的語句
 static int errors;
移到檔案的開頭，緊跟註釋後的第一行去。

4.4 繼續報錯：
bison: Command not found
 
修改：
sudo apt-get install bison

4.5 繼續編譯，繼續報錯
flex:Command not found
修改：
sudo apt-get install flex

4.6 繼續編譯，繼續報錯
In file included from depmod.c:44:
./../include/util.h:42: warning: built-in function ‘log’ declared as non-function
depmod.c: In function ‘addksyms’:
depmod.c:1136: error: lvalue required as left operand of assignment
make[1]: *** [depmod.o] 錯誤 1
make[1]: Leaving directory ‘/usr/src/redflag/BUILD/modutils-2.4.27/depmod’
make: *** [all] 錯誤 2
error: Bad exit status from /var/tmp/rpm-tmp.36319 (%build)

修改：
將depmod.c的第1136行：
 ((char *)ksym->name) += 8;
改成：
 ksym->name = (void *)((long)(ksym->name)+8);

5. 終於編譯成功，可以到insmod目錄下，使用insmod指令載入模組了。注意編譯出來的insmod指令只適合2.6 核心以前的版本。這個版本的modutils程式碼中的很多系統呼叫在現在的linux核心中已不存在。若想insmod指令能使用新版本的核心，需要下載最新的busybox原始碼去編譯，編譯出的insmod指令可以在新核心上使用。