<div dir="ltr">Hello there. I was wondering if anybody knew what is causing this compilation error I'm getting on a new Ubuntu 14.04 VM with a 3.13.0 kernel.  It does not find the DEBIAN_API_VERSION symbol. The use of that was introduced in 2.6.1 apparently:<div><br><div><br><table cellpadding="0" class="" style="font-size:12.8000001907349px"><tbody><tr class=""><td colspan="2" class="" style="padding:6px 0px"><span class=""><span><a href="http://fossies.org/diffs/lttng-modules/2.6.0_vs_2.6.1/lttng-kernel-version.h-diff.html">http://fossies.org/diffs/lttng-modules/2.6.0_vs_2.6.1/lttng-kernel-version.h-diff.html</a><br><br>I'm following the instructions in the Download page to install from the PPA :  <a href="http://lttng.org/download/#ubuntu">http://lttng.org/download/#ubuntu</a><br><br>This the error I'm getting. Thanks in advance for any help!<br><br></span></span></td><td colspan="2" class="" style="padding:6px 0px">In file included from /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+201504291801~ubuntu14.04.1/build/wrapper/page_alloc.h:28:0,</td><td colspan="2" class="" style="padding:6px 0px">                 from /var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+201504291801~ubuntu14.04.1/build/lttng-events.c:27:</td><td colspan="2" class="" style="padding:6px 0px">/var/lib/dkms/lttng-modules/2.6.x+stable+bzr727+pack22+201504291801~ubuntu14.04.1/build/wrapper/../lttng-kernel-version.h:60:57: error: operator '+' has no right operand</td><td colspan="2" class="" style="padding:6px 0px">  ((LINUX_VERSION_CODE * 1000000ULL) + DEBIAN_API_VERSION)</td></tr></tbody></table></div></div></div>