Comment 4 for bug 1277975

This package builds fine on my pbuilder too. However, I've retried the building of binaries and they have been built successful now. The exception are powerpc and ppc64el. Could you do more investigation there, please?

checking for Sleep... no
checking for objc_root_class attribute support... not present
checking whether objc really works... no
I don't seem to be able to use your Objective-C compiler to produce
working binaries! Please check your Objective-C compiler installation.
If you are using gcc-3.x make sure that your compiler's libgcc_s and libobjc
can be found by the dynamic linker - usually that requires you to play
with LD_LIBRARY_PATH or /etc/ld.so.conf.
Please refer to your compiler installation instructions for more help.
configure: error: The Objective-C compiler does not work or is not installed properly.
debian/rules:122: recipe for target 'debian/configure-stamp' failed
make: *** [debian/configure-stamp] Error 1
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2