Following exactly the instructions as laid out on https://source.tizen.org/documentation/developer-guide/building-packages-locally

On Ubunutu 13.04 I get:

me@tizen:/media/me/gentoo/GIT/Tizen$ gbs -v build -A armv7l –threads=4 –clean-once –exclude=bash,bzip2-libs,c-ares,cmake,coreutils,diffutils,eglibc,elfutils-libelf,elfutils-libs,elfutils,fdupes,file,findutils,gawk,gmp,gzip,libacl,libattr,libcap,libcurl,libfile,libgcc,liblua,libstdc++,make,mpc,mpfr,ncurses-libs,nodejs,nspr,nss-softokn-freebl,nss,openssl,patch,popt,rpm-build,rpm-libs,rpm,sed,sqlite,tar,xz-libs,zlib,binutils,gcc,filesystem,aul,libmm-sound,libtool
info: generate repositories …
debug: fetching http://download.tizen.org/releases/2.2/tizen-2.2/repodata/repomd.xml => /var/tmp/me-gbs/gbscacheNnIild/repomd.xml
debug: fetching error:(22, ‘The requested URL returned error: 404 Not Found’)
debug: fetching http://download.tizen.org/releases/2.2/tizen-2.2/builddata/build.xml => /var/tmp/me-gbs/gbscacheNnIild/build.xml
debug: fetching http://download.tizen.org/releases/2.2/tizen-2.2/repos/tizen-base/ia32/packages/repodata/repomd.xml => /var/tmp/me-gbs/gbscacheNnIild/repomd.xml
debug: fetching http://download.tizen.org/releases/2.2/tizen-2.2/repos/tizen-main/ia32/packages/repodata/repomd.xml => /var/tmp/me-gbs/gbscacheNnIild/repomd.xml
debug: fetching http://download.tizen.org/releases/2.2/tizen-2.2/repos/tizen-base/armv7l/packages/repodata/repomd.xml => /var/tmp/me-gbs/gbscacheNnIild/repomd.xml
debug: fetching http://download.tizen.org/releases/2.2/tizen-2.2/repos/tizen-main/armv7l/packages/repodata/repomd.xml => /var/tmp/me-gbs/gbscacheNnIild/repomd.xml
debug: fetching http://download.tizen.org/releases/2.2/tizen-2.2/builddata/0fa267f9b5c2439349e22f9049e3f5b421e7d97bcc36f0a8254963f0fb5660f0-build.conf => /var/tmp/me-gbs/gbscacheNnIild/0fa267f9b5c2439349e22f9049e3f5b421e7d97bcc36f0a8254963f0fb5660f0-build.conf
debug: running command: depanneur –arch=armv7l –repository=/media/me/gentoo/GIT/Tizen/pre-built/toolchain-arm/ –repository=/media/me/gentoo/GIT/Tizen/pre-built/toolchain-x86/ –repository=http://download.tizen.org/releases/2.2/tizen-2.2/repos/tizen-base/armv7l/packages –repository=http://download.tizen.org/releases/2.2/tizen-2.2/repos/tizen-main/armv7l/packages –dist=tizen2.2 –configdir=/var/tmp/me-gbs –path=/media/me/gentoo/GIT/Tizen –exclude=bash –exclude=bzip2-libs –exclude=c-ares –exclude=cmake –exclude=coreutils –exclude=diffutils –exclude=eglibc –exclude=elfutils-libelf –exclude=elfutils-libs –exclude=elfutils –exclude=fdupes –exclude=file –exclude=findutils –exclude=gawk –exclude=gmp –exclude=gzip –exclude=libacl –exclude=libattr –exclude=libcap –exclude=libcurl –exclude=libfile –exclude=libgcc –exclude=liblua –exclude=libstdc++ –exclude=make –exclude=mpc –exclude=mpfr –exclude=ncurses-libs –exclude=nodejs –exclude=nspr –exclude=nss-softokn-freebl –exclude=nss –exclude=openssl –exclude=patch –exclude=popt –exclude=rpm-build –exclude=rpm-libs –exclude=rpm –exclude=sed –exclude=sqlite –exclude=tar –exclude=xz-libs –exclude=zlib –exclude=binutils –exclude=gcc –exclude=filesystem –exclude=aul –exclude=libmm-sound –exclude=libtool –clean-once –threads=4 –packaging-dir=packaging –upstream-branch=upstream
info: start building packages from: /media/me/gentoo/GIT/Tizen (git)
info: prepare sources…
info: retrieving repo metadata…
info: parsing package data…
warning: libwsbm: build arch not compatible: i386 i486 i586 i686 athlon
warning: syslinux: build arch not compatible: i386 i486 i586 i686 athlon x86_64
warning: system-plugin-ia-generic: build arch not compatible: i386 i486 i586 i686 athlon x86_64
warning: pvr-bin-mdfld: build arch not compatible: i386 i486 i586 i686 athlon x86_64
warning: psb-headers: build arch not compatible: i386 i486 i586 i686 athlon
warning: mmfw-sysconf-simulator: build arch not compatible: i386 i486 i586 i686 athlon
warning: gstreamer-vaapi: build arch not compatible: i386 i486 i586 i686 athlon
info: building repo metadata …
info: package dependency resolving …
warning: circle found: syspopup->app-core->elementary->app-svc->pkgmgr-info->system-server->syspopup
info: circle found, exit…
error: Traceback (most recent call last):
  File “/usr/bin/gbs”, line 552, in <module>
    sys.exit(main(sys.argv))
  File “/usr/bin/gbs”, line 546, in main
    return module.main(args)
  File “/usr/lib/pymodules/python2.7/gitbuildsys/cmd_build.py”, line 339, in main
    raise GbsError(‘rpmbuild fails’)
GbsError: <gbs>rpmbuild fails

This is an absolutely pristine install, soley for the purposes of building tizen

Any clues?