I kicked off a gcc build (gcc-4.8_4.8.2-21) last night. It didn't have an errors for me. I now have a bunch of *.deb files:
figgles@ghost:~/src$ ls -1 *.deb
cpp-4.8_4.8.2-21_sparc.deb
g++-4.8-multilib_4.8.2-21_sparc.deb
g++-4.8_4.8.2-21_sparc.deb
gcc-4.8-base_4.8.2-21_sparc.deb
gcc-4.8-locales_4.8.2-21_all.deb
gcc-4.8-multilib_4.8.2-21_sparc.deb
gcc-4.8-plugin-dev_4.8.2-21_sparc.deb
gcc-4.8-source_4.8.2-21_all.deb
gcc-4.8_4.8.2-21_sparc.deb
gcj-4.8-jdk_4.8.2-21_sparc.deb
gcj-4.8-jre-headless_4.8.2-21_sparc.deb
gcj-4.8-jre-lib_4.8.2-21_all.deb
gcj-4.8-jre_4.8.2-21_sparc.deb
gcj-4.8-source_4.8.2-21_all.deb
gcj-4.8_4.8.2-21_sparc.deb
gdc-4.8_4.8.2-21_sparc.deb
gfortran-4.8-multilib_4.8.2-21_sparc.deb
gfortran-4.8_4.8.2-21_sparc.deb
gobjc++-4.8-multilib_4.8.2-21_sparc.deb
gobjc++-4.8_4.8.2-21_sparc.deb
gobjc-4.8-multilib_4.8.2-21_sparc.deb
gobjc-4.8_4.8.2-21_sparc.deb
lib64asan0-dbg_4.8.2-21_sparc.deb
lib64asan0_4.8.2-21_sparc.deb
lib64gcc-4.8-dev_4.8.2-21_sparc.deb
lib64gfortran-4.8-dev_4.8.2-21_sparc.deb
lib64objc-4.8-dev_4.8.2-21_sparc.deb
lib64stdc++-4.8-dev_4.8.2-21_sparc.deb
lib64stdc++6-4.8-dbg_4.8.2-21_sparc.deb
libasan0-dbg_4.8.2-21_sparc.deb
libasan0_4.8.2-21_sparc.deb
libgcc-4.8-dev_4.8.2-21_sparc.deb
libgcj14-awt_4.8.2-21_sparc.deb
libgcj14-dbg_4.8.2-21_sparc.deb
libgcj14-dev_4.8.2-21_sparc.deb
libgcj14_4.8.2-21_sparc.deb
libgfortran-4.8-dev_4.8.2-21_sparc.deb
libobjc-4.8-dev_4.8.2-21_sparc.deb
libstdc++-4.8-dev_4.8.2-21_sparc.deb
libstdc++-4.8-doc_4.8.2-21_all.deb
libstdc++-4.8-pic_4.8.2-21_sparc.deb
libstdc++6-4.8-dbg_4.8.2-21_sparc.deb