Redundant redeclaration of SystemCoreClock

[Armandas]

I am using a MCUXpresso IDE V11.3.1 to generate board configuration files for MKE16Z series device.

I have enabled extra warnings in my project, among them "-Wredundant-decls". With this option, the compiler produces the following warning in board/clock_config.c:

../../../board/clock_config.c:46:17: error: redundant redeclaration of 'SystemCoreClock' [-Werror=redundant-decls]
   46 | extern uint32_t SystemCoreClock;
      |                 ^~~~~~~~~~~~~~~
In file included from ../../../lib/NXP_MKE16Z64/devices/MKE16Z4/MKE16Z4.h:137,
                 from ../../../lib/NXP_MKE16Z64/devices/MKE16Z4/fsl_device_registers.h:24,
                 from ../../../lib/NXP_MKE16Z64/devices/MKE16Z4/drivers/fsl_common.h:22,
                 from ../../../board/clock_config.h:9,
                 from ../../../board/clock_config.c:34:
../../../lib/NXP_MKE16Z64/devices/MKE16Z4/system_MKE16Z4.h:90:17: note: previous declaration of 'SystemCoreClock' was here

Since the declaration is already present in system_MKE16Z4.h, the generator should be updated to remove the duplicate declaration.

[marek_neuzil · Accepted solution]

Hello,

Thank you for reporting the issue. The redundant declaration of SystemCoreClock variable will be removed from the generated code of the clock initialization source code. It will be fixed in a next release.

Best Regards,

Marek Neuzil