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The C source and header files added in this commit is covered under the
InMon sFlow license at http://www.inmon.com/technology/sflowlicense.txt
The library requires -Wno-unused to compile without warnings, so this
commit adds that for building the sFlow code only. Automake can only
change compiler flags on a per-library or per-program basis, so sFlow
is built as a separate library.
The library will be used in upcoming commits.
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C compiler warning options added by the "configure" script have until
now been put into CFLAGS. However that option is supposed to be reserved
for the user under Automake rules, so move them to AM_CFLAGS.
Besides increased adherence to Automake rules, this is useful because
AM_CFLAGS can be overridden on a per-target (e.g. program or library)
basis, whereas CFLAGS cannot. In turn, building the sFlow library (which
will be added in an upcoming commit) requires overriding the compiler
flags to avoid some warning messages. (By modifying the warning flags, we
avoid the need to modify the sFlow library in any way.)
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Both ; and : are valid shell commands here, but one branch of the "if"
uses one and the other branch uses the other. Use the same one, for
consistency's sake.
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Commit 5ef800a69 "datapath: Copy Xen's checksumming fields when doing
skb_copy" should copy proto_data_valid between sk_buffs when that field
is present. However the check for CONFIG_XEN plus kernel version 2.6.18
isn't sufficient, because SLES 11 kernels are version 2.6.27 but do have
this field.
This commit adds a configure-time check for the presence of the member
instead of attempting to guess based on the kernel version.
Thanks to Ian Campbell for reporting this problem.
CC: <Ian.Campbell@citrix.com>
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Recent Debian kernel-header packages divide kernel headers into two
directories: the "common" headers that are not architecture-specific,
which go in a directory named like
/usr/src/kernel-headers-2.6.31-1-common,
and architecture-specific headers in a directory named, e.g.
/usr/src/kernel-headers-2.6.31-1-686.
OVS needs to look at the ones in the "common" directory as part of its
configuration process, but the build directory provided on --with-l26 is
the architecture-specific directory. We also need the
architecture-specific directory, since it is the one that we use as part
of the "make", so we can't simply make the user specify the common
directory on --with-l26. Furthermore, there is no easy-to-see link
between the two directories, except as part of the text in a Makefile,
which is not the easiest language to parse.
This commit attempts to kluge around the problem by using the Debian
directory naming. If the build directory does not contain the headers,
then we replace the last component of its name by "-common" and check
for the headers there. This is not ideal, but it does solve the actual
problem at hand.
Tested with Debian's linux-headers-2.6.31-1-686 and with a few older
sets of headers that do not use this scheme.
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This merge took a little bit of care due to two issues:
- Crossport of "interface-reconfigure" fixes from master back to
citrix that had happened and needed to be canceled out of the merge.
- New script "refresh-xs-network-uuids" added on citrix branch that
needed to be moved from /root/vswitch/scripts to
/usr/share/vswitch/scripts.
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Centos 5.3 backports more functions from later kernel versions to 2.6.18,
so the kernel version number is no longer a reliable way to check for these
functions. Thus, add a "configure" test for them.
Reported-by: Paulo Cravero <pcravero@as2594.net>
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I had thought that Automake was smart enough to ignore conditionals around
EXTRA_DIST, so that all files always got distributed regardless of whether
Automake conditionals were set. I was wrong.
This commit removes the --disable-userspace option to "configure", which
put a conditional around most of Makefile.am and thus unintentionally
caused most of the distribution to be left out if --disable-userspace was
specified. The alternative (fixing --disable-userspace) seems like too
much work--it would require pushing "if ENABLE_USERSPACE" down into lots
of subdirectory--and would be difficult to maintain.
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The glibc 2.7 headers contain a bug that causes strtok_r() to segfault
in some circumstances. Until now, we have been working around this
problem at each invocation, but this depends on the programmer to remember
to do so each time.
This commit instead adds a shim that adds a work-around to the string.h
header itself, so that it is much more difficult to miss the workaround.
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Now the Debian packaging is regularly tested via the autobuilder, so there
is less need to do it from "make distcheck", and not doing it saves time
there.
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