aboutsummaryrefslogtreecommitdiffstats
path: root/docs/part-1/5_debug-first-app.md
blob: cc0e8a2de70177de380874ca60fdb476f1565b85 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
# Debug your first AGL application

Debug is based on gdb and you need to use `xds-gdb` as a wrapper on gdb to cross-debug your application.
This tool allows you to debug an application built with an xds-server without the need to install gdb or any cross tool.
Two debugging models are supported:

1. native debugging

1. XDS remote debugging requiring an XDS server and allowing cross debug your
  application.

 By default XDS remote debug is used and you need to define `XDS_NATIVE_GDB`
variable to use native gdb debug mode instead.

> **SEE ALSO**: [xds-server](https://github.com/iotbzh/xds-server), a web server
used to remotely cross build applications.
> **SEE ALSO**: [xds-exec](https://github.com/iotbzh/xds-exec),
wrappers on `exec` command that allows to cross build your application through `xds-server`.

## Configuration

 `xds-gdb` configuration is defined by variables (see listed below).
 These variables may be set using :

- environment variables (inherited),
- or a config file set with `XDS_CONFIG` environment variable, for example:
  `XDS_CONFIG=/tmp/my_xds_gdb_config.env xds-gdb`
- or by setting variables within a gdb ini file (see details below),
- or a "user" config file located in following directory (first found is taken):
  1. $(CURRENT_DIRECTORY)/.xds-gdb.env
  1. $(CURRENT_DIRECTORY)/../xds-gdb.env
  1. $(CURRENT_DIRECTORY)/target/xds-gdb.env
  1. $(HOME)/.config/xds/xds-gdb.env

### Configuration Variables

 `XDS_CONFIG`
 Config file defining `XDS_xxx` configuration variables. Variables of this file
 will overwrite inherited environment variables. Variables definition may be
 prefixed or not by "export" keyword.
 Here is an example of configuration file

```bash
# for example:
# MY_PROJECT_DIR=/home/seb/xds-workspace/helloworld-native-application
cat > $MY_PROJECT_DIR/xds-gen3.conf << EOF
export XDS_SERVER_URL=http://docker:8000
export XDS_PROJECT_ID=IW7B4EE-DBY4Z74_myProject
export XDS_SDK_ID=poky-agl_aarch64_4.0.1
EOF
```

`XDS_LOGLEVEL`

Set logging level (supported levels: panic, fatal, error, warn, info, debug)

`XDS_LOGFILE`

Set logging file, default `/tmp/xds-gdb.log`.

`XDS_NATIVE_GDB`

Use native gdb mode instead of remote XDS server mode.

`XDS_PROJECT_ID`  *(mandatory with XDS server mode)*

Project ID you want to build

`XDS_RPATH`

Relative path into project

`XDS_SDK_ID`   *(mandatory with XDS server mode)*

Cross Sdk ID to use to build project

`XDS_SERVER_URL`    *(mandatory with XDS server mode)*

Remote XDS server url

### Configuration variables set within gdb init command file

Above `XDS_xxx` variables may also be defined within gdb init command file
(see --command or -x option of genuine Gdb).
You must respect the following syntax: commented line including `:XDS-ENV:` tag

Example of gdb init file where we define project and sdk ID:

```bash
     # :XDS-ENV: XDS_PROJECT_ID=IW7B4EE-DBY4Z74_myProject
     # :XDS-ENV: XDS_SDK_ID=poky-agl_aarch64_4.0.1
```

## Using xds-gdb from command line

### XDS remote debugging mode

First the project you want to debug must be declared on an xds-server and this
project may also has been built using this xds-server (see [xds-server](https://github.com/iotbzh/xds-server) for more details).

So to debug it you need to know the xds-server url (eg. <http://docker:8000>),
you also need the project and sdk unique id. You can find these IDs in project
page of XDS dashboard or you can get them from command line using the `--list`
option.
This option lists all existing projects ID:

```bash
XDS_SERVER_URL=http://docker:8000 xds-gdb --list
```

Now to refer your project, just set `XDS_PROJECT_ID` and `XDS_SDK_ID` variables.

You are now ready to use `xds-gdb` to for example cross debug your project.
Here is an example to build and debug a project based on CMakefile and
[AGL app-templates](https://git.automotivelinux.org/apps/app-templates/):

```bash
# Go into your project directory (for example helloworld-native-application)
cd ~/xds-workspace
git clone https://github.com/iotbzh/helloworld-native-application.git
cd helloworld-service

# Declare your project on xds-server
# <for now, you can only do this step using xds HTML dashboard (see xds-server doc)>

# Define XDS config
cat <<EOF >./xds-config.env
XDS_SERVER_URL=http://docker:8000
XDS_PROJECT_ID=IW7B4EE-DBY4Z74_myProject
XDS_SDK_ID=poky-agl_aarch64_4.0.1
EOF

# Tell to xds-exec and xds-gdb which is your config file
export XDS_CONFIG=../xds-gen3.conf

# Create a new build directory
mkdir build && cd build

# Start remote cross build
xds-exec -- cmake -DRSYNC_TARGET=root@myTarget ..
xds-exec -- make
xds-exec -- make remote-target-populate

# Start debugging
xds-gdb -x target/gdb-on-root@myTarget.ini
```

<!-- note -->
> **Note** : [helloworld-native-application](https://github.com/iotbzh/helloworld-native-application) project is an AGL
project based on [app-templates](https://git.automotivelinux.org/apps/app-templates/)
(included as a git submodule). This CMake templating, used to develop application
with the AGL Application Framework, will automatically generate makefile rules
(eg. `remote-target-populate`) or scripts (eg. `build/target/xxx` scripts).

For more info about app-template, please refer to [this documentation](http://docs.automotivelinux.org/docs/devguides/en/dev/reference/sdk-devkit/docs/part-2/2_4-Use-app-templates.html).
<!-- endnote -->

### Native debugging

To enable native debugging mode, you need to define `XDS_NATIVE_GDB` variable.

## Using xds-gdb within an IDE

### Netbeans

__Netbeans 8.x :__

- Open menu **Tools** -> **Options**
  - Open **C/C++** tab, in **Build Tools** sub-tab, click on **Add** button:

    ![Add new tool panel](./pictures/nb_newtool.png){:: style="width:90%;"}

  - Then, you should set **Make Command** and **Debugger Command** to point to xds tools:

    ![Add new tool panel](./pictures/nb_xds_options.png){:: style="width:90%;"}

  - Finally click on **OK** button.

- Edit project properties (using menu **File** -> **Project Properties**) to update Debug settings:

  - Be sure that "Gen3 board" configuration is selected

  - Select **Run** category, and set:
    - Run Command: `target/start-on-root@renesas-gen3.sh`
      (_script name may depend of RSYNC_TARGET variable you set in pre-build command_)
    - Run Directory: `build_gen3`

  - Select **Debug** category, and set:
    - Debug command: `/bin/true`
    - Working Directory: _empty field_
    - Gdb Init File: `target/gdb-on-root@renesas-gen3.ini`
      (_script name may depend of RSYNC_TARGET variable you set in pre-build command_)

    ![Select Model panel](./pictures/nb_project_debug-1.png){:: style="width:90%;"}

  - Click on **Apply** and then **OK** button to save settings

You can now start debugging your application with menu **Debug** -> **Debug Project** (or **CTRL+F5** shortcut)

### Others IDE

*Coming soon...*