Yocto: Debugging programs on the target using GDB
Yocto: Debugging programs on the target using GDB
local.conf
IMAGE_INSTALL_append = "gdbserver"
EXTRA_IMAGE_FEATURES += "debug-tweaks"
GDB with tui support (optional)
Create recipe in meta-foo/recipes-devtools/gdb/gdb-%.bbappend and insert
EXTRA_OECONF_remove = " --disable-tui"
EXTRA_OECONF += " --enable-tui"
SDK
Use the extensible SDK, built using, e.g.,
bitbake -c populate_sdk_ext core-image-minimal
Use $ devtool modify <recipe> docs here to build and then install packages to be debugged into the eSDK.
I think using devtool, in most cases, automatically enables debug symbols, and installs them to the host sysroot, so they don’t have to be installed to the target.
Then build and deploy
$ devtool build recipe
$ devtool deploy-target <recipe> root@<machine-ip>
Run GDB on the target
# gdbserver localhost:1234 <prog> <args...>
Run GDB on the host, within the sdk env
$ $GDB
Then in gdb connect and debug
(gdb) target remote <machine-ip>:1234
(gdb) b main
(gdb) c