On 9 August 2013 17:45, Yaodong Yang <yaodong.yangy@gmail.com> wrote:
I tried the following commands.
./configure --enable-debug --disable-werror --enable-kvm
--prefix=/usr/local/kvm
--disable-werror is usually not a good idea for developers.
I see, I will get rid of it in my development.
make -j4
sudo make install
gdb sudo /usr/local/kvm/bin/qemu-system/x86_64 -s -enable-kvm -hda
ubuntu.img -m 1024.
Why are you running qemu as root here? (ie why 'sudo'?)
In my implementation, I need to read and write to other raw disks, so I think I need the root permission to run this program.
Could someone give me some guidance on how to use gdb in QEMU.
I know the basic usage of gdb for simple .c file, but I really
do not know how to use it in QEMU.
There is no particular difference. QEMU is a bigger program
but has no particular gotchas for being debugged.
I think I did not make my question clear. I do not know 1. how to add "-g" flag when compile QEMU, in order to use gdb 2. how to invoke QEMU with gdb, because my previous attempt failed. "gdb sudo /usr/local/kvm/bin/qemu-system/x86_64 -s -enable-kvm -hda"
by the way, when I add storagemanager.c and storagemanager.h to the root directory, in order to compile and link them, I add storagemanger.o in Makefile.objs, as "block-obj-y += nbd.o block.o storagemanager.o" in line 10.