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Go to https://www.eclipse.org/downloads/eclipse-packages/ and select the latest version of Eclipse IDE for C/C++ Developers. At the moment of writing, the current version is the "Oxygen" release. Download and install Eclipse to your host.

1. Adding a Project to Eclipse

Here is how to create a single file project in Eclipse.

  1. Download the Yocto toolchain from the Emcraft website.

  2. Install the toolchain to your development host. The toolchain can be installed to an arbitrary directory:

    Code Block
    $ sh ./meta-toolchain-qt5-openstlinux-weston-stm32mp1-som-x86_64-toolchain-2.4-snapshot.sh

  3. Activate the cross-build environment:

    Code Block
    $ source /opt/st/stm32mp1-som/2.4-snapshot/environment-setup-cortexa7hf-neon-
vfpv4-openstlinux_weston-linux-gnueabi
$ unset CCACHE_PATH

  4. Select a workspace directory (an arbitrary directory, different from the directory where your source file is located):

    image-20240123-114533.png

  5. Create an empty project, open File -> New -> C/C++ Project, select C Managed Build, enter the name of the project, for example, c-example, and click Next.

    image-20240123-114636.png

  6. On the next screen you will be prompted to select configurations. Leave all the defaults and click Next to proceed.

  7. On the next screen, enter arm-openstlinux_weston-linux-gnueabi- as a Cross compiler prefix and /opt/st/stm32mp1-som/2.4-snapshot/sysroots/x86_64-openstlinux_weston_sdk-linux/usr/bin/arm-openstlinux_weston-linux-gnueabi/ as a Cross compiler path:

    image-20240123-114728.png

  8. Click Finish.

  9. Add your source file (see attached for an example) to the project, open File -> Import, select File System:

    image-20240123-114758.png

  10. Click Next, and, using Browse, navigate to the directory with your source file. Select the directory in the left window, this will add its content to the project:

    image-20240123-114826.png

  11. Click Finish.

2. Creating Build Configuration and Building the Project

Now, we need to instruct Eclipse on how to build the project for the STM32MP1 Cortex A7 target.

  1. Right-click on the just created project and select Properties. Navigate to C/C++ Build->Settings.

  2. In the Tool Settings tab on the right, select Include paths:

    image-20240123-114858.png

  3. If needed, click on the + button and enter an include path.

  4. Navigate to Miscellaneous and add --sysroot=/opt/st/stm32mp1-som/2.4-snapshot/sysroots/cortexa7hf-neon-vfpv4-openstlinux_weston-linux-gnueabi -marm -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 to Other flags.

    image-20240123-114939.png

  5. In the same window, navigate to Cross GCC Linker -> Library search path:

    image-20240123-115000.png

  6. If needed, click on the + button and enter a library search path.

  7. Navigate to Miscellaneous and add --sysroot=/opt/st/stm32mp1-som/2.4-snapshot/sysroots/cortexa7hf-neon-vfpv4-openstlinux_weston-linux-gnueabi -marm -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 to Other flags:

    image-20240123-115040.png

  8. Repeat the configuration steps above for the Release configuration.

  9. To build the project, press Ctrl-B.

3. Debugging the Project on the Target

Now, we need to add Debug Configuration to the Eclipse project:

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