I updated the Impact and Test Case sections of this bug's description. I hope this better fits the purpose of describing the actual impact on users.
** Description changed: Impact ====== - libgif-dev in Ubuntu 14.04 LTS depends on libgif4 and has these symlinks: - /usr/lib/libungif.a -> libgif.a - /usr/lib/libungif.so -> libgif.so.4.1.6 - /usr/lib/x86_64-linux-gnu/libgif.so -> libgif.so.4.1.6 - /usr/lib/libungif.la -> libgif.la - - libgif4 has these files: - /usr/lib/x86_64-linux-gnu/libgif.so.4.1.6 - /usr/lib/x86_64-linux-gnu/libgif.so.4 -> libgif.so.4.1.6 - - Only the 3rd symlink (the multiarch one) in libgif-dev is correct. The - others are dangling. - - This was caused by an obsolete debian/libgif-dev.links + Linking programs that need libungif ("-lungif") will fail. Test Case ========= - Verify that libgif-dev only includes the one working symlink: - /usr/lib/x86_64-linux-gnu/libgif.so -> libgif.so.4.1.6 + apt-get install build-essential libgif-dev + cat >>test.c EOF + int main(int argc, char **argv) { + return 0; + } + EOF + gcc -lungif test.c + + GCC will fail with "/usr/bin/ld: cannot find -lungif" on affected + systems. Regression Potential ==================== None, just removing some dangling symlinks that couldn't work any way. Original Bug Report =================== In Ubuntu 14.04 LTS on x86_64 I am experiencing the following bug in libgif-dev 4.1.6-11: Symbol links for libungif.a, libungif.la, and libungif.so are created in /usr/lib that point to libgif.a, libgif.la and libgif.so.4.1.6 respectively. However, these files are not in /usr/lib but in /usr/lib/x86_64-linux-gnu. Therefore, the symbol links are invalid. I suggest fixing this by placing the symbol links in the same directory as the target files. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1337898 Title: Invalid symlinks for libungif.so and libungif.a To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/giflib/+bug/1337898/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs