Atmel CAVR-4 Manual De Usuario

CAVR-4

Part 2. Compiler reference

For file specifications enclosed in angle brackets, the preprocessor does not search 
directories of the parent files. A parent file is the file that contains the 

#include

 

directive. Instead, it begins by searching for the file in the directories specified on the 
compiler command line.

For file specifications enclosed in quotes, the preprocessor directory search begins with 
the directories of the parent file, then proceeds through the directories of any 
grandparent files. Thus, searching begins relative to the directory containing the source 
file currently being processed. If there is no grandparent file and the file has not been 
found, the search continues as if the filename was enclosed in angle brackets.

Preprocessor directives use the source character set, with the exception of escape 
sequences. Thus, to specify a path for an include file, use only one backslash:

#include "mydirectory\myfile"

Within source code, two backslashes are necessary:

file = fopen("mydirectory\\myfile","rt");

The following pragma directives are recognized:

alignment

ARGSUSED

baseaddr

bitfields

can_instantiate

codeseg

constseg

cspy_support

data_alignment

dataseg

define_type_info

diag_default

diag_error

diag_remark

diag_suppress

diag_warning

do_not_instantiate

function

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