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#
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# Backend API
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#
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# Each backend for a platform <P> should provide these functions
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#
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# pp_backend_P_init - Initialises variables that the %set may replace
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# pp_backend_P - Reads the output files from the frontend and generate
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# the single output package file in $pp_wrkdir
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# pp_backend_P_names - Prints the output package names, without the
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# $pp_wrkdir prefix. The names should start with
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# "$name-$version"
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# pp_backend_P_probe - Prints the short platform identifier
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# pp_backend_P_cleanup - Removes leftover temporary files, and may be
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# called without pp_backend_P_init/pp_backend_P
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# being invoked.
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# pp_backend_P_detect - Returns true if running on the given platform.
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# First arguement is output of 'uname -s'
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# pp_backend_P_init_svc_vars - Initialise per-service variables
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# pp_backend_P_install_script - Generates a script file that installs/
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# upgrades the recently package built
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# pp_backend_P_function - Generates shell code for platform functions
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#
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# A backend should also add itself to the $pp_platforms variable
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#
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# Variable assumptions the platform functions may make are
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#
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# $name
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# $version
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# $summary
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# $description
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# $copyright
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#
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# Backends for platform P can use private variables of the form $pp_P_*
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# and document user-provided variables of the form $P_* where P is the
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# platform name (eg aix or linux)
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#
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# Helper functions are:
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#
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# pp_mkgroup group -- no effect if group exists
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# pp_mkuser [-d home] [-g group] user -- no effect if user exists
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# pp_havelib name [major[.minor] [directory...]]
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#
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#@ pp_backend_init(): call the current platform backend's initialiser
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#@ pp_backend(): call the current platform backend's processor
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#@ pp_backend_names(): print the current platform backend's package names
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#@ pp_backend_cleanup(): call the current platform backend's cleanup
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#@ pp_backend_init_svc_vars(): call the current platform backend's svc var init
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#@ pp_backend_install_script(): call the current backend's install script gen
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#@ pp_backend_function(): emit a helper function
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#@ pp_backend_probe(): print the current platform's short identifier
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#@ pp_backend_vas_platforms(): print the current VAS platform's identifier(s)
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#-- these functions are so similar, we generate them
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for _sufx in _init '' _names _cleanup _install_script \
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_init_svc_vars _function _probe _vas_platforms
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do
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eval "pp_backend$_sufx () { pp_debug pp_backend$_sufx; pp_backend_\${pp_platform}$_sufx \"\$@\"; }"
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done
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