On Tue, 4 Jan 2005, Steven W. Orr wrote: > On Tuesday, Jan 4th 2005 at 09:43 -0500, quoth Robert P. J. Day: > > => > => with respect to the gcc preprocessor, is it correct to say that, > =>unless i use some of the preprocessor include options to change how > =>include directives are processed, the only difference between the > =>following two statements: > => > => #include <fred.h> > => #include "fred.h" > => > =>is that the latter will first search the current directory? with that > =>exception, will both forms then search identically based on system > =>directories and "-I" options? > => > => i can also see how i can change this with options like "-I-", and > =>-nostdinc and -include, but i wanted to verify what happens with none > =>of these other options. > > <> is used to access system include files. "" is used to access user > include files. i understand *philosophically* what the difference is -- what i was asking is the *precise* processing logic behind them. for instance, i can certainly use #include "stdio.h" and the preprocessor will find that system include file. on the other hand, as long as i use the appropriate "-I" option, i can include my personal header files with: #include <fred.h> so it's not as cut-and-dried as you suggest. in short, i'm still curious about the *exact* difference in processing between those two constructs. rday
