手順

まずは DownloadMacOsXContribBinaries.sh で contrib の中身をダウンロード。

paraches-no-macbook-air:HandBrake paraches$ ./DownloadMacOsXContribBinaries.sh 
Getting contribs (0022)...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 7602k  100 7602k    0     0   781k      0  0:00:09  0:00:09 --:--:-- 1557k
ranlib: for architecture: ppc file: lib/libmp3lame.a(layer1.o) has no symbols
ranlib: for architecture: i386 file: lib/libmp3lame.a(layer1.o) has no symbols
ranlib: for architecture: ppc file: lib/libmpeg2.a(libmpeg2arch_la-idct_alpha.o) has no symbols
ranlib: for architecture: ppc file: lib/libmpeg2.a(libmpeg2arch_la-idct_mmx.o) has no symbols
ranlib: for architecture: ppc file: lib/libmpeg2.a(libmpeg2arch_la-motion_comp_alpha.o) has no symbols
ranlib: for architecture: ppc file: lib/libmpeg2.a(libmpeg2arch_la-motion_comp_mmx.o) has no symbols
ranlib: for architecture: ppc file: lib/libmpeg2.a(libmpeg2arch_la-motion_comp_vis.o) has no symbols
ranlib: for architecture: i386 file: lib/libmpeg2.a(libmpeg2arch_la-idct_alpha.o) has no symbols
ranlib: for architecture: i386 file: lib/libmpeg2.a(libmpeg2arch_la-idct_altivec.o) has no symbols
ranlib: for architecture: i386 file: lib/libmpeg2.a(libmpeg2arch_la-motion_comp_alpha.o) has no symbols
ranlib: for architecture: i386 file: lib/libmpeg2.a(libmpeg2arch_la-motion_comp_altivec.o) has no symbols
ranlib: for architecture: i386 file: lib/libmpeg2.a(libmpeg2arch_la-motion_comp_vis.o) has no symbols
ranlib: for architecture: ppc file: lib/libvorbis.a(lookup.o) has no symbols
ranlib: for architecture: i386 file: lib/libvorbis.a(lookup.o) has no symbols
ranlib: for architecture: ppc file: lib/libxvidcore.a(timer.o) has no symbols
ranlib: for architecture: i386 file: lib/libxvidcore.a(timer.o) has no symbols
paraches-no-macbook-air:HandBrake paraches$ 

なんだか後半は警告？だらけだけど、とりあえずダウンロードはできたらしい。

次に HandBrake.xcodeproj をダブルクリックして Xcode を起動。そしたら何も考えずにビルドをしてみる。
結果、エラーも出ずにビルド終了！
contrib の中身をダウンロードしてくる部分だけわかれば Xcode でのビルドはとっても簡単だった！