将动态链接的可执行文件与ld链接 [英] Linking a dynamically linked executable with ld

问题描述

我正在尝试创建没有gcc的动态链接的可执行文件(elf_i386).该程序非常简单(只有一个printf)...这里的命令:

i'm trying to create a dynamically linked executable (elf_i386) without gcc. The program is very simple (only a printf)...here the commands:

$ gcc -c simple.c
$ ld -o simple -dynamic-linker /lib/ld-linux.so.2 --entry main /usr/lib/crt1.o /usr/lib/crti.o simple.o -lc /usr/lib/crtn.o

创建可执行文件，并且文件命令和ldd命令显示正确的输出... 但是，当我在调用printf之后启动程序时，出现了分段错误...我已经用objdump检查了可执行文件，并且我认为问题出在dtor上...好像是在编译:

The executable is created and also file command and ldd command show the right output... However when i launch the program after the call to printf i get a segmentation fault...i've examined with objdump the executable and i think the problem is about the dtors...seems that compiling with:

$gcc -o simple simple.c

.dtors节存在，而ld:(

a section .dtors is present while it is not present inside the executable created directly with ld :(

有什么想法吗?

推荐答案

丢掉--entry main. main不是您的入口点，_start是.试试这个:

Lose the --entry main. main isn't your entry point, _start is. Try this:

$ gcc -c hello.c
$ ld -o hello -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o /usr/lib/crti.o hello.o -lc /usr/lib/crtn.o
$ ./hello
hello, world
$ 

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