On May 6, 9:24 am, "William Stein" <[EMAIL PROTECTED]> wrote: > Hello, > > I've posted sage-2.5.alpha3 here: > > http://sage.math.washington.edu/home/was/sage2.5/ > > Feedback is welcome.
On my machine running Debian testing, plotting-related tests fail with messages like: libpng error: Incompatible libpng version in application and library A mysterious error (perphaps a memory error?) occured, which may have crashed doctest. I think I understand why this is happening. Debian testing includes a new version of libpng (version 1.4, package names libpng14-1 and libpng14-dev). When matplotlib is compiled (in particular, the file _ns_image.cpp, which produces _ns_image.so), it uses a -I flag to include the png.h header file from SAGE's local version of libpng (version 1.2.16). However, when the resulting object file is linked, to actually produce _ns_image.so, it has no special -L flags, so it ends up linked against Debian's version 1.4 libpng. At runtime, libpng 1.4 notices that the application was compiled against the version 1.2.16 png.h header file; this is a fatal error, and exits SAGE. The fix is to change the matplotlib spkg-install, so that the _ns_image.so link command has the right -L flag to link against SAGE's libpng. (I don't know enough about the Python compile system to do this myself.) Carl Witty --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
