-qlsearch, -qsearch

In z/OS® XL C/C++, -qlsearch specifies the directories or data sets to be searched for user include files by the preprocessor. When -qnolsearch is in effect, the preprocessor only searches the data sets that are specified in the USERLIB DD statement.

-qsearch specifies the directories or data sets to be searched for system include files by the preprocessor. .When -qsearch is in effect, the preprocessor looks for system include files in the specified directories or data sets. When -qnosearch is in effect, the preprocessor searches only those data sets that are specified in the SYSLIB statement.