Changes to default ARCH and TUNE level

Start of change Description: The default ARCH level is changed from ARCH(7) to ARCH(8), and the default TUNE level is changed from TUNE(7) to TUNE(8). End of change

Start of change When change was introduced: z/OS® V2R2 End of change

Description: The default ARCH level is changed from ARCH(5) to ARCH(7), and the default TUNE level is changed from TUNE(5) to TUNE(7).

When change was introduced: z/OS V2R1

Reference information:

z/OS XL C/C++ User's Guide