"Dr. David Kirkby" <david.kirkby@xxxxxxxxxx> writes: > If someone > > 1) Builds Sage with gcc x.y.z > 2) Udates gcc > 3) Tries to upgrade Sage, could they expect problems as a result of > the gcc upgrade? In general, no. The C ABI is completely stable. The C++ ABI has been stable since gcc 3.4. No current changes are planned, though it is possible that there will be change associated with support of the upcoming C++0x standard. > * Would a major upgrade of gcc (from say 4 to gcc 5) cause problems (I > know 5 is not our yet, but you get the point. It is possible that the C++ ABI will change in a major release. > * Would a less major upgrade from say 4.1.x to gcc 4.2.y ? I would argue against changing the C++ ABI in a less major release, but it is conceivable though very unlikely. > * How about a minor upgrade, from gcc 4.3.x to 4.3.y ?? The ABI will definitely be stable in a minor release. Ian Ian
