by Paul Russo
Attendees: Tim Doody, Eric Flumerfelt, Lynn Garren, Chris Green, Herb Greenlee, Chris Jones, Tom Junk, Kyle Knoepfel, Jim Kowalkowski, Rob Kutschke, Adam Lyon, Marc Paterno, Brian Rebel, Ron Rechenmacher, Paul Russo
We discussed a proposed gcc compiler patch by Eric Flumerfelt. The purpose of the patch is to allow building gcc with the --enable-libstdcxx-time=rt configuration option without introducing a link-time dependence on librt and libpthread. With this option set the clock_gettime system call is implemented using a virtual system call instead of a real system call, which is three times faster.
It was decided to make a gcc 4.9.3a package using the --enable-libstdcxx-time=rt option without any patches and build the art suite using it with qualifier e10 since it was felt that the librt and libpthread dependence was not a serious problem.
Marc Paterno suggested that the artdaq team swap in a rebuild of gcc privately in their own products area during the transition to accommodate their needs.