On Sat, Jan 19, 2013 at 1:30 PM, horseriver <horserivers@gmail.com> wrote:
On Sat, Jan 19, 2013 at 09:47:53PM -0800, Ian Lance Taylor wrote:
On Fri, Jan 18, 2013 at 10:19 PM, horseriver <horserivers@gmail.com> wrote:
hi:
Here are two command for producting one .so file :
1. gcc -nostdlib -Wl,-T,vsyscall.lds vsyscall-int80.o -o vsyscall-int80.so
2. ld -T vsyscall.lds vsyscall-int80.o -o vsyscall-int80.so
There is no substantive difference between these commands. There are various minor differences that probably don't matter. Use the -v option when invoking gcc to see precisely how it invokes the linker.
In particular, invoking the linker via the gcc driver will cause some C++-specific operations to occur when needed, but since you aren't using C++ in this case they won't happen.
Thanks!
I have a weird problem here!
When I type the 1 to make vsyscall-int80.so ,ld report error: Not enough room for program headers, try linking with -N
But,When I type 2 to make vsyscall-int80.so,it works successfully.
What is the reason?
I don't know. Run the complete gcc command with the -v option and you will see precisely how it invokes the linker. Ian