FedoraBuildInstructions
From IcedTea
Default Build requirements on F10 (updated 2009-05-15):
yum install autoconf automake gcc gcc-c++ ant cups-devel xorg-x11-proto-devel \ libjpeg-devel giflib-devel libXt-devel libXp-devel libXpm-devel libXext-devel \ libXinerama-devel libXrender-devel libpng-devel libXtst-devel freetype-devel \ alsa-lib-devel xulrunner-devel-unstable gtk2-devel patch xalan-j2 wget
Extra requirements for building with various flags:
yum install libffi-devel llvm-devel systemtap-sdt-devel pulseaudio-libs-devel
Extra requirements for building icedtea7 and icedtea6 (version 6-1.8pre) due to the new JAXP and JAXWS builds:
yum install ant-nodeps
And then follow the steps on the Main Page to download and build IcedTea

