Tool chain for ARMv7l imx6 solo sd board

I have flashed the image for a development board imx6 solo sd which is ARMv7l arch. Build by yocto project.

Now I have a application to port, for which I will be needing the tool chain, right? If yes please let me know where/how to get it.

Yes. You'll probably need a toolchain. Depending on application you want to port, you can generate a specific toolchain with yocto.

• For a Qt5 based application, the command to generate your toolchain with yocto is bitbake meta-toolchain-qt5
• Else, if you want a toolchain based on your rootfs's image, the command to generate the toolchain will be bitbake <image_name> -c populate_sdk, where <image_name> is the name of image you builded and flashed in your board.