Bug#640449: libwnck: FTBFS: tasklist.c:492: undefined reference to `cos'

[Mònica Ramírez Arceda]

Source: libwnck
Version: 2.30.4-3
Severity: serious
Tags: wheezy sid
User: debian-qa at lists.debian.org
Usertags: qa-ftbfs-20110902 qa-ftbfs
Justification: FTBFS on amd64

Hi,

During a rebuild of all packages in sid, your package failed to build on
amd64.

Relevant part:
> libtool: link:  gcc -shared  .libs/wnck-enum-types.o .libs/wnck-marshal.o .libs/application.o .libs/class-group.o .libs/pager.o .libs/screen.o .libs/selector.o .libs/tasklist.o .libs/util.o .libs/window.o .libs/window-action-menu.o .libs/workspace.o .libs/xutils.o .libs/pager-accessible.o .libs/pager-accessible-factory.o .libs/workspace-accessible.o .libs/workspace-accessible-factory.o   -Wl,--as-needed -lgtk-x11-2.0 -lgdk-x11-2.0 /usr/lib/x86_64-linux-gnu/libatk-1.0.so /usr/lib/libgio-2.0.so -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 /usr/lib/libcairo.so -lpango-1.0 /usr/lib/x86_64-linux-gnu/libfreetype.so -lfontconfig /usr/lib/libgmodule-2.0.so /usr/lib/libgobject-2.0.so /usr/lib/libgthread-2.0.so -lrt /usr/lib/libglib-2.0.so -lstartup-notification-1 -lXRes -lX11  -Wl,-z -Wl,defs -Wl,-O1 -pthread   -pthread -Wl,-soname -Wl,libwnck-1.so.22 -Wl,-version-script -Wl,.libs/libwnck-1.ver -o .libs/libwnck-1.so.22.3.29
> .libs/tasklist.o: In function `wnck_task_button_glow':
> /build/libwnck-IHdLto/libwnck-2.30.4/libwnck/tasklist.c:492: undefined reference to `cos'
> collect2: ld returned 1 exit status

The full build log is available from:
   http://people.debian.org/~lucas/logs/2011/09/02/libwnck_2.30.4-3_lsid64.buildlog

A list of current common problems and possible solutions is available at 
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on about 50 AMD64 nodes
of the Grid'5000 platform, using a clean chroot.  Internet was not
accessible from the build systems.