Commit 04130cc9 authored Jun 09, 2013 by Daniel Tang Committed by Michal Marek Jul 03, 2013

Fix a build warning in scripts/mod/file2alias.c



On some systems, __used is already defined in sys/cdefs.h and causes
a build warning:

scripts/mod/file2alias.c:85:1: warning: "__used" redefined
In file included from /usr/include/stdio.h:64,
                 from scripts/mod/modpost.h:1,
		                  from scripts/mod/file2alias.c:13:
				  /usr/include/sys/cdefs.h:146:1: warning: this is the location of the previous definition

This adds an extra check before defining the __used macro to see if
the macro was already defined elsewhere.

Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

parent bd701343

scripts/mod/file2alias.c

+6 −4

Original line number	Diff line number	Diff line
		@@ -79,11 +79,13 @@ struct devtable __start___devtable, __stop___devtable;
		extern struct devtable __start___devtable[], __stop___devtable[];
		#endif /* __MACH__ */

		#if !defined(__used)
		# if __GNUC__ == 3 && __GNUC_MINOR__ < 3
		# define __used __attribute__((__unused__))
		# else
		# define __used __attribute__((__used__))
		# endif
		#endif

		/* Define a variable f that holds the value of field f of struct devid
		* based at address m.