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# $NetBSD: destdir.mk,v 1.1 2006/11/15 19:27:16 rillig Exp $
#
# ===
# Warning: This file is still under construction. Don't rely on it.
# ===
#
# This file documents the variables around the DESTDIR support.
#
# Normally, packages are installed directly into LOCALBASE and may
# overwrite files of other packages there. It also makes it easy to
# create packages which behave differently depending on whether they
# are installed from source or from a binary package. This is not good.
#
# The DESTDIR support tries to prevent some of these problems. When it
# is enabled, packages are not installed directly into LOCALBASE.
# Instead, they are installed in a temporary directory, and a binary
# package is created from the files that have been installed there.
#
# === User-settable variables ===
#
# USE_DESTDIR
# * "yes" to enable DESTDIR support for those packages that
# explicitly support it.
#
# * "full": This makes the build completely unprivileged and in
# turn detects any attempt to write e.g. to ${LOCALBASE}.
# This is not supported for actual installation yet, due to
# short comings of pkg_create. [FIXME]
#
# === Package-settable variables ===
#
# PKG_DESTDIR_SUPPORT
# * "user-destdir" means that all files of the packages should be
# installed with default ownership and permissions.
#
# * "destdir" means that some of the installed files need special
# ownership or permissions.
#
# === Implementation notes ===
#
# In the "install" phase, the variable DESTDIR is set in the make(1)
# environment of the default "do-install" target. Additionally, the
# variable is passed in the INSTALL_MAKE_FLAGS to override potential
# "DESTDIR=" entries in the Makefiles.
#
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