--prefix=&kde-dir; : This option tells the process to install the package in &kde-dir;. --disable-debug : This option causes the system to be compiled without debugging code. --disable-dependency-tracking : This option speeds up one time builds. --enable-fast-malloc=full : This option tells KDE programs to use an internal memory allocation scheme optimized for KDE. --disable-pcre : Omit this switch if you have PCRE installed and you want improved regular expression support in the KDE JavaScript engine.