What is the most common ide on gcc for arm 7?

In my personal experience, I've seen most clients use Eclipse, for flexibility. Eclipse has a huge amount of followers, and therefore the amount of plug-ins is impressive. As stated previously, J-Link also has a page on supported IDEs. I've used Eclipse with gcc, SEGGER tools and a few others.

Hello,

We have a list of IDEs which are supported by SEGGER Microcontroller J-Link. This list also contains GNU based variants. As J-Link supports all popular tool-chains, this list should include the answer you are expecting.

I would expect that this list gives you a good starting point to find out, which IDE you might want to use:

SEGGER Microcontroller - Embedded Software Solutions - Supported IDEs

Best regards,

Dirk Akemann