[Yocto] Enabling GDB TUI mode

reference

https://docs.yoctoproject.org/

Enabling GDB TUI mode on yocto project

The gdb related bb files are located in the ~/meta/recipes-devtools/gdb folder.
ex)

• gdb_11.b.bb is for gdb on target device
• gdb-cross_11.1.bb is for gdb on host(for remote debugging)

The following is in gdb-common.inc file.

...
PACKAGECONFIG[tui] = "--enable-tui,--disable-tui"
...

So, in your layer, add append file(s) to your layer as shown below.

recipes-devtools/
└── gdb
    ├── gdb-%.bbappend       // for gdb-cross-architecture
    └── gdb_%.bbappend       // for gdb on target device

Add the code below to each append file to add “–enable-tui” option.

PACKAGECONFIG:append = " tui "

For “gdb-cross-architecture”, refer to the link below to build and use. debugging with gdb on yocto project

How to add gdb/strace to image

add ‘tools-debug’ image feature, which corresponds to the ‘packagegroup-core-tools-debug’ package group to local.conf.

...
IMAGE_FEATURES:append = " tools-debug"
...

The relevant information is in the files below.

In meta/classes/core-image.bbclass

...
FEATURE_PACKAGES_tools-debug = "packagegroup-core-tools-debug"
...

In meta/recipes-core/packagegroups/packagegroup-core-tools-debug.bb

...
STRACE = "strace"
STRACE:riscv32 = ""

RDEPENDS:${PN} = "\
    gdb \
    gdbserver \
    ${MTRACE} \
    ${STRACE} \
    "
...