.../source This directory is the root of the source code subtree. All system sources reside in this directory. If you are short of disk space and do not intend to recompile the system, this directory tree can be removed. Much space will be saved. To compile a new system and install it in the local directories, use make install To install a system in the system directories, use make install sysinstall DESTDIR=/usr which will install everything in /usr/bin and /usr/lib. Each subdirectory represents a subsystem of INGRES. Makefiles have entries for install in each case. To simply recompile a module, just use "make" with no arguments.