pp.back

#
# Backend API
#
# Each backend for a platform <P> should provide these functions
#
#  pp_backend_P_init    - Initialises variables that the %set may replace
#  pp_backend_P         - Reads the output files from the frontend and generate
#                         the single output package file in $pp_wrkdir
#  pp_backend_P_names   - Prints the output package names, without the
#                         $pp_wrkdir prefix. The names should start with
#                         "$name-$version"
#  pp_backend_P_probe   - Prints the short platform identifier
#  pp_backend_P_cleanup - Removes leftover temporary files, and may be
#		          called without pp_backend_P_init/pp_backend_P
#                         being invoked.
#  pp_backend_P_detect  - Returns true if running on the given platform.
#                         First argument is output of 'uname -s'
#  pp_backend_P_init_svc_vars - Initialise per-service variables
#  pp_backend_P_install_script - Generates a script file that installs/
#                           upgrades the recently package built
#  pp_backend_P_function - Generates shell code for platform functions
#
# A backend should also add itself to the $pp_platforms variable
#
# Variable assumptions the platform functions may make are
#
#	$name
#	$version
#	$summary
#	$description
#	$copyright
#	$vendor
#
# Backends for platform P can use private variables of the form $pp_P_*
# and document user-provided variables of the form $P_* where P is the
# platform name (eg aix or linux)
#
# Helper functions are:
#
#   pp_mkgroup group                       -- no effect if group exists
#   pp_mkuser  [-d home] [-g group] user   -- no effect if user exists
#   pp_havelib name [major[.minor] [directory...]]
#

#@ pp_backend_init():    call the current platform backend's initialiser
#@ pp_backend():         call the current platform backend's processor
#@ pp_backend_names():   print the current platform backend's package names
#@ pp_backend_cleanup(): call the current platform backend's cleanup
#@ pp_backend_init_svc_vars(): call the current platform backend's svc var init
#@ pp_backend_install_script(): call the current backend's install script gen
#@ pp_backend_function(): emit a helper function
#@ pp_backend_probe():   print the current platform's short identifier
#@ pp_backend_vas_platforms(): print the current VAS platform's identifier(s)
#-- these functions are so similar, we generate them
for _sufx in _init '' _names _cleanup _install_script \
    _init_svc_vars _function _probe _vas_platforms
do
 eval "pp_backend$_sufx () { pp_debug pp_backend$_sufx; pp_backend_\${pp_platform}$_sufx \"\$@\"; }"
done