Am 03.07.2015 um 23:54 schrieb Steinar H. Gunderson: > tags 791205 patch > user release.debian.org@packages.debian.org > usertag 791205 + transition > block 791205 by 790756 > reassign 791205 release.debian.org > thanks > > On Fri, Jul 03, 2015 at 01:12:53PM +0000, Matthias Klose wrote: >> Package: src:movit >> Version: 1.1.3-1 >> Severity: important >> Tags: sid stretch >> User: debian-gcc@lists.debian.org >> Usertags: libstdc++-cxx11 >> >> Background [1]: libstdc++6 introduces a new ABI to conform to the >> C++11 standard, but keeps the old ABI to not break existing binaries. >> Packages which are built with g++-5 from experimental (not the one >> from testing/unstable) are using the new ABI. Libraries built from >> this source package export some of the new __cxx11 or B5cxx11 symbols, >> and dropping other symbols. If these symbols are part of the API of >> the library, then this rebuild with g++-5 will trigger a transition >> for the library. >> >> What is needed: >> >> - Rebuild the library using g++/g++-5 from experimental. Note that >> most likely all C++ libraries within the build dependencies need >> a rebuild too. You can find the log for a rebuild in >> https://people.debian.org/~doko/logs/gcc5-20150701/ >> Search for "BEGIN GCC CXX11" in the log. >> >> - Decide if the symbols matching __cxx11 or B5cxx11 are part of the >> library API, and are used by the reverse dependencies of the >> library. >> >> - If there are no symbols matching __cxx11 or B5cxx11 in the symbols >> forming the library API, you should close this issue with a short >> explanation. >> >> - If there are no reverse dependencies, it should be the package >> maintainers decision if a transition is needed. However this might >> break software which is not in the Debian archive, and built >> against these packages. >> >> - If a library transition is needed, please prepare for the change. >> Rename the library package, append "v5" to the name of the package >> (e.g. libfoo2 -> libfoo2v5). Such a change can be avoided, if you >> have a soversion bump and you upload this version instead of the >> renamed package. Prepare a patch and attach it to this issue (mark >> this issue with patch), so that it is possible to NMU such a >> package. We'll probably have more than hundred transitions >> triggered. Then reassign the issue to release.debian.org and >> properly tag it as a transition issue, by sending an email to >> control@bugs.debian.org: >> >> user release.debian.org@packages.debian.org >> usertag <this issue> + transition >> block <this issue> by 790756 >> reassign <this issue> release.debian.org >> >> - If unsure if a transition is needed, please tag the issue with help >> to ask for feedback from other Debian developers. >> >> The libstdc++6 transition will be a large one, and it will come with a >> lot of pain. Please help it by preparing the follow-up transitions. >> >> [1] https://wiki.debian.org/GCC5#libstdc.2B-.2B-_ABI_transition > I might be missing something here, but if you are going to rename the library package, don't you also have to enforce a build against g++-5? Otherwise you might end up with a libfoov5 package which was built against gcc < 5. -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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