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https://github.com/xen-project/xen.git
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Ian Jackson
0013245473
Some systems have python-config include -D_FORTIFY_SOURCE in the
CFLAGS. But -D_FORTIFY_SOURCE does not (currently) work with -O0, and
-O0 is enabled in debug builds (since 1166ecf781). As a result, on
those systems, debug builds fail.
Work around this problem as follows:
* In configure, detect -D_FORTIFY_SOURCE in $(python-config --cflags)
* If detected, set the new autoconf substitution and make variable
PY_NOOPT_CFLAGS to -O1.
* In tools/Rules.mk, where we add -O0, also add PY_NOOPT_CFLAGS
(which will override the -O0 with -O1 if required).
Overriding the -O0 is better than disabling Fortify because the
latter might have an adverse security impact. A user who wants to
disable optimisation completely even for Python and also disable
Fortify can set the environment variable
EXTRA_CFLAGS_XEN_TOOLS='-U_FORTIFY_SOURCE -O0'
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Reported-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
CC: Jan Beulich <JBeulich@suse.com>
CC: Ian Campbell <Ian.Campbell@citrix.com>
CC: Euan Harris <euan.harris@citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-by: Don Slutz <dslutz@verizon.com>
About
=====
This documents the upstream sources for the different slew of different
m4 sources we have picked up or developed.
pkg.m4
======
The pkg-config m4 macro library comes from the upstream pkg-config
git repository [0]. If you update the m4 library update this file
with provenance and last commit ID information. For documentation
on how to use this read the pkg-config(1) man page.
Do not modify this file yourself, if you want to evolve it send
patches upstream and then synch back here.
Tree: git://anongit.freedesktop.org/pkg-config
The last synch was from commit:
commit 4f0084d9d3b8726a797a373c7ec5e406000995d0
Author: Dan Nicholson <dbn.lists@gmail.com>
Date: Mon Feb 3 15:59:18 2014 -0800
glib: Fix Makefiles to suppress warnings from automake
With the newly added glib.mk, some of the noinst_* variables need to use
+= in the evaluation to avoid multiple definition warnings from
automake.
systemd.m4
==========
systemd.m4 was contributed to by Luis R. Rodriguez <mcgrof@do-not-panic.com>,
its current home project can be found at:
https://github.com/mcgrof/funk-systemd