Category
Pragma equivalent
#pragma options [no]idirfirst
Purpose
Specifies whether the compiler searches for user include files in directories specified by the -I option before or after searching any other directories.
When -qidirfirst is in effect, the compiler first searches the directories specified by the -I option before searching any other directories. When -qnoidirfirst is in effect, before searching directories named on the -I option, the compiler first searches a) the directories in which source files named on the -qinclude option are located; and b) the directories in which the including files are located.
Defaults
-qnoidirfirst
Usage
This option only affects files included with the #include “file_name" directive or the -qinclude option; -qidirfirst is independent of the -qnostdinc option and has no effect on the search order for XL C or system header files. (For the search order of header files, see Directory search sequence for include files.) This option also has no effect on files that are included using an absolute path name.
The last valid pragma directive remains in effect until replaced by a subsequent pragma.
Predefined macros
None.
Examples
xlc myprogram.c -I/usr/tmp/myinclude -qidirfirst