Binary package hint: firefox
http://launchpadlibrarian.net/8745011/buildlog_ubuntu-gutsy-lpia.firefox_2.0.0.6%2B2-0ubuntu1_FAILEDTOBUILD.txt.gz
g++ -fno-rtti -fno-exceptions -Wall -Wconversion -Wpointer-arith -Wcast-align -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wno-long-long -pedantic -fshort-wchar -pthread -pipe -DNDEBUG -DTRIMMED -pipe -w -O2 -fno-strict-aliasing -g -fPIC -shared -Wl,-z,defs -Wl,-h,libxpcom_compat_c.so -o libxpcom_compat_c.so nsXPCOMObsolete.o nsRegistry.o -L../../../dist/bin -lxpcom -lxpcom_core -L../../../dist/bin -L/usr/lib -lplds4 -lplc4 -lnspr4 -lpthread -ldl -L../../../dist/lib -lxpcom_compat -Wl,--version-script -Wl,../../../build/unix/gnu-ld-scripts/components-version-script -Wl,-Bsymbolic -ldl -lm
nsXPCOMObsolete.o:(.data.rel.ro+0x18): undefined reference to `nsFileSpecImpl::Create(nsISupports*, nsID const&, void**)'
nsXPCOMObsolete.o:(.data.rel.ro+0x50): undefined reference to `nsDirectoryIteratorImpl::Create(nsISupports*, nsID const&, void**)'
/usr/bin/ld: libxpcom_compat_c.so: hidden symbol `nsFileSpecImpl::Create(nsISupports*, nsID const&, void**)' isn't defined
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: ld returned 1 exit status
make[4]: *** [libxpcom_compat_c.so] Error 1
confirmed by the lpia buildd