AC_USE_SYSTEM_EXTENSIONS enables _XOPEN_SOURCE, _GNU_SOURCE and similar
macros to expose the largest extent of functionality supported by the
underlying system. This is required since these macros are often
limiting rather than merely additive, e.g. _XOPEN_SOURCE will actually
on some systems hide declarations which are not part of the X/Open spec.
Since this goes into config.h rather than the command line, ensure all
source is consistently including config.h before anything else,
including system libraries. This doesn't need to be guarded by a
HAVE_CONFIG_H ifdef, which was only ever a hangover from the X.Org
modular transition.
Signed-off-by: Daniel Stone <daniel@fooishbar.org>
[pq: rebased and converted more files]
At this point path must point to an allocated string since otherwise the
asprintf that makes the allocation would have failed and we would have
returned earlier.
This applies the same pattern as used in other error cases in this block - and
cleans up the file desciptors and allocated memory too.
Signed-off-by: Rob Bradford <rob@linux.intel.com>
readlink() returns the number of bytes that it has written excluding any NUL
byte (since it does not write that itself.) This could lead to attempting to
access beyond the end of buffer if the destination of the link is exactly 100
bytes long. The standard solution to this is to subtract one from the buffer
when passing it into readlink().
Signed-off-by: Rob Bradford <rob@linux.intel.com>
libbacklight is 300 lines of code in one .c file, and we're relying on
udev changes that aren't yet upstream. For now, let's just keep a
copy in weston and if the Xorg DDX drivers start using libbacklight and
it becomes more widely available, we'll make it an external dependency.
