Otherwise make can search the path relative to certain standard paths
such as /usr/include (e.g., the line '-include $(XEN_ROOT)/.config' in
Config.mk suffers from this).
Signed-off-by: Keir Fraser <keir@xen.org>
xen-unstable changeset: 23049:ff3b7749008b
Backport-requested-by: Allen M Kay <allen.m.kay@intel.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Currently the build produces lots of
Usage: grep [OPTION]... PATTERN [FILE]...
Try `grep --help' for more information.
This is due to the "grep -- $(2)" in cc-options. It seems that the
default of reading stdin is disabled when using "--". I don't know if
this is a bug in grep or how it is supposed to be but we can work
around it by explicitly passing in "-"
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Keir Fraser <keir@xen.org>
xen-unstable changeset: 23898:3d1664cc9e45
xen-unstable date: Fri Sep 30 21:17:47 2011 +0100
These disable-warning options are handled specially by GCC:
(a) they are ignored unless the compiler emits a warning; and
(b) even then they produce a warning rather than an error
To handle this, modify the test invocation of GCC to compile a
fragment of code that will always provoke a warning (integer assigned
to pointer). This works around (a) above.
Then, we grep the compiler's stdout/stderr for the option-under-test,
the presence of which would indicate an "unrecognized command-line
option" warning/error. This works around (b) above, letting us
distinguish between the "integer assigned to pointer" and
"unrecognized command-line option" warnings.
Signed-off-by: Keir Fraser <keir@xen.org>
xen-unstable changeset: 23369:37c77bacb52a
xen-unstable date: Mon May 23 17:38:28 2011 +0100
Avoid "error: variable 'unused' set but not used
[-Werror=unused-but-set-variable]" with gcc 4.6.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
xen-unstable changeset: 23368:0f670f5146c8
xen-unstable date: Sat May 21 07:55:46 2011 +0100
If you actually set it to a relative path, the qemu build breaks.
So this commented-out rune (an example) should arrange to be absolute.
Unfortunately XEN_ROOT is itself relative so the previous attempt to
fix this (22772:654563af359f) didn't work. So use `pwd`.
Tested-by: M A Young <m.a.young@durham.ac.uk>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Jackson
Jan Beulich
Keir Fraser
Jan Beulich
Ian Campbell
Olaf Hering