Header files for non-Metal C can be found in the z/OS® UNIX directory /usr/include. Header files for Metal C can be found in the z/OS UNIX directory /usr/include/metal. If you are not using z/OS UNIX, then the non-Metal C header files can be found in the PDSE SYS1.SIEAHDRV.H . There are no Metal C header files for the batch environment.
DLLs for non-Metal C can be found in the z/OS UNIX directory /usr/lib. If you are not using z/OS UNIX, then the DLLs can be found in SYS1.SIEALNKE . There are no DLLs for Metal C.
Side decks for non-Metal C can be found in /usr/lib. If you are not using z/OS UNIX, then the side decks can be found in SYS1.SIEASID. There are no side decks for Metal C.