Keil RTX5 is developed and tested using the common toolchains and development environments.

Arm Compiler (Arm/Keil MDK, uVision5)

RTX5 is initially developed and optimized using Arm Compiler and Arm/Keil MDK. The current release is tested with the following versions:

• Arm Compiler 5.06 Update 7
• Arm Compiler 6.6.4 (Long Term Maintenance)
• Arm Compiler 6.19
• RTOS-aware debugging with uVision 5.38

IAR Embedded Workbench

RTX5 has been ported to the IAR Embedded Workbench. The following releases are known to work:

• IAR Embedded Workbench 7.7 (community report)
• IAR Embedded Workbench 7.80.4
• IAR Embedded Workbench 8.20.1

GNU Compiler Collection

RTX5 has also been ported to support GCC, maintenance mainly relays on community contribution. Active development is currently tested with:

• GNU Arm Embedded Toolchain 10-2020-q4-major (10.2.1 20201103)