RE: undefined reference to symbol 'dlsym@@GLIBC_2.2.5' during qemu build

[<ckim@etri.re.kr>]

Hi, Jeffery, and all,

After reading your comment, I briefly looked into the qemu build script (configure script and the generated Makefiles)
And looks like it follows your flag placement rule.
So I figured out how to do it. Now the configure script is this (under build directory):

../configure --target-list=aarch64-softmmu --enable-debug --enable-gtk --extra-ldflags="-Wl,--no-as-needed -ldl"

This makes the link flag placed at the end. Now the undefined reference to symbol 'dlsym@@GLIBC_2.2.5' error is gone, and dlopen, dlsym works ok.
The debugger hang problem was in the ./ddd/init file. 
(I changed "set extended-prompt not set\n\"  to "set extended-prompt (gdb) \n\"  https://stackoverflow.com/questions/2914003/ddd-hangs-on-start)

Now I can do the normal debugging.
Thanks a lot!
Chan Kim

> The make recipe is off a bit.
> 
> Ld is a single pass linker. -ldl needs to be near the end of the list of
> object files and libraries, not the beginning. I.e., it should be
> something like:
> 
> foo: <objs>
>     $(CC) $(CFLAGS) <objs> $(LDFLAGS) $(LDLIBS) -ldl
> 
> Jeff