541 lines
15 KiB
Bash
541 lines
15 KiB
Bash
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# Copyright 1999-2020 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: lua-single.eclass
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# @MAINTAINER:
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# William Hubbs <williamh@gentoo.org>
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# Marek Szuba <marecki@gentoo.org>
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# @AUTHOR:
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# Marek Szuba <marecki@gentoo.org>
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# Based on python-single-r1.eclass by Michał Górny <mgorny@gentoo.org> et al.
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# @SUPPORTED_EAPIS: 7
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# @BLURB: An eclass for Lua packages not installed for multiple implementations.
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# @DESCRIPTION:
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# An extension of lua.eclass suite for packages which don't support being
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# installed for multiple Lua implementations. This mostly includes software
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# embedding Lua.
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#
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# This eclass sets correct IUSE. It also provides LUA_DEPS
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# and LUA_REQUIRED_USE that need to be added to appropriate ebuild
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# metadata variables.
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#
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# The eclass exports LUA_SINGLE_USEDEP that is suitable for depending
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# on other packages using the eclass. Dependencies on packages using
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# lua.eclass should be created via lua_gen_cond_dep() function, using
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# LUA_USEDEP placeholder.
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#
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# Please note that packages support multiple Lua implementations
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# (using lua.eclass) cannot depend on packages not supporting
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# them (using this eclass).
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#
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# Note that since this eclass always inherits lua-utils as well, in ebuilds
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# using the former there is no need to explicitly inherit the latter in order
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# to use helper functions such as lua_get_CFLAGS.
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#
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# @EXAMPLE:
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# @CODE
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# EAPI=7
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#
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# LUA_COMPAT=( lua5-{1..3} )
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#
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# inherit lua-single
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#
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# [...]
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#
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# REQUIRED_USE="${LUA_REQUIRED_USE}"
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# DEPEND="${LUA_DEPS}"
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# RDEPEND="${DEPEND}
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# $(lua_gen_cond_dep '
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# dev-lua/foo[${LUA_USEDEP}]
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# ')
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# "
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# BDEPEND="virtual/pkgconfig"
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#
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# # Only neeed if the setup phase has to do more than just call lua-single_pkg_setup
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# pkg_setup() {
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# lua-single_pkg_setup
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# [...]
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# }
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#
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# src_install() {
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# emake LUA_VERSION="$(lua_get_version)" install
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# }
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# @CODE
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case ${EAPI:-0} in
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0|1|2|3|4|5|6)
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die "Unsupported EAPI=${EAPI} (too old) for ${ECLASS}"
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;;
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7)
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;;
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*)
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die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
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;;
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esac
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if [[ ! ${_LUA_SINGLE_R0} ]]; then
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if [[ ${_LUA_R0} ]]; then
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die 'lua-single.eclass cannot be used with lua.eclass.'
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fi
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inherit lua-utils
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fi
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EXPORT_FUNCTIONS pkg_setup
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# @ECLASS-VARIABLE: LUA_COMPAT
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# @REQUIRED
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# @PRE_INHERIT
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# @DESCRIPTION:
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# This variable contains a list of Lua implementations the package
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# supports. It must be set before the `inherit' call. It has to be
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# an array.
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#
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# Example:
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# @CODE
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# LUA_COMPAT=( lua5-1 lua5-2 lua5-3 )
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# @CODE
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#
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# Please note that you can also use bash brace expansion if you like:
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# @CODE
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# LUA_COMPAT=( lua5-{1..3} )
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# @CODE
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# @ECLASS-VARIABLE: LUA_COMPAT_OVERRIDE
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# @USER_VARIABLE
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# @DEFAULT_UNSET
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# @DESCRIPTION:
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# This variable can be used when working with ebuilds to override
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# the in-ebuild LUA_COMPAT. It is a string listing all
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# the implementations which package will be built for. It need be
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# specified in the calling environment, and not in ebuilds.
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#
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# It should be noted that in order to preserve metadata immutability,
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# LUA_COMPAT_OVERRIDE does not affect IUSE nor dependencies.
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# The state of LUA_TARGETS is ignored, and all the implementations
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# in LUA_COMPAT_OVERRIDE are built. Dependencies need to be satisfied
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# manually.
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#
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# Example:
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# @CODE
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# LUA_COMPAT_OVERRIDE='lua5-2' emerge -1v dev-lua/foo
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# @CODE
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# @ECLASS-VARIABLE: LUA_REQ_USE
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# @DEFAULT_UNSET
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# @PRE_INHERIT
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# @DESCRIPTION:
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# The list of USE flags required to be enabled on the chosen Lua
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# implementations, formed as a USE-dependency string. It should be valid
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# for all implementations in LUA_COMPAT, so it may be necessary to
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# use USE defaults.
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# This must be set before calling `inherit'.
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#
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# Example:
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# @CODE
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# LUA_REQ_USE="deprecated"
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# @CODE
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#
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# It will cause the Lua dependencies to look like:
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# @CODE
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# lua_targets_luaX-Y? ( dev-lang/lua:X.Y[deprecated] )
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# @CODE
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# @ECLASS-VARIABLE: LUA_DEPS
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# @OUTPUT_VARIABLE
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# @DESCRIPTION:
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# This is an eclass-generated Lua dependency string for all
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# implementations listed in LUA_COMPAT.
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#
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# Example use:
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# @CODE
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# RDEPEND="${LUA_DEPS}
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# dev-foo/mydep"
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# DEPEND="${RDEPEND}"
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# @CODE
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#
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# Example value:
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# @CODE
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# lua_targets_lua5-1? ( dev-lang/lua:5.1 )
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# lua_targets_lua5-2? ( dev-lang/lua:5.2 )
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# @CODE
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# @ECLASS-VARIABLE: LUA_REQUIRED_USE
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# @OUTPUT_VARIABLE
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# @DESCRIPTION:
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# This is an eclass-generated required-use expression which ensures at
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# least one Lua implementation has been enabled.
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#
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# This expression should be utilized in an ebuild by including it in
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# REQUIRED_USE, optionally behind a use flag.
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#
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# Example use:
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# @CODE
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# REQUIRED_USE="lua? ( ${LUA_REQUIRED_USE} )"
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# @CODE
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#
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# Example value:
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# @CODE
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# || ( lua_targets_lua5-1 lua_targets_lua5-2 )
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# @CODE
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# @ECLASS-VARIABLE: LUA_SINGLE_USEDEP
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# @OUTPUT_VARIABLE
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# @DESCRIPTION:
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# This is an eclass-generated USE-dependency string which can be used
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# to depend on another lua-single package being built for the same
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# Lua implementations.
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#
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# If you need to depend on a multi-impl (lua.eclass) package, use
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# lua_gen_cond_dep with LUA_USEDEP placeholder instead.
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#
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# Example use:
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# @CODE
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# RDEPEND="dev-lua/foo[${LUA_SINGLE_USEDEP}]"
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# @CODE
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#
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# Example value:
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# @CODE
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# lua_single_target_lua5-1(-)?
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# @CODE
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# @ECLASS-VARIABLE: LUA_USEDEP
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# @OUTPUT_VARIABLE
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# @DESCRIPTION:
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# This is an eclass-generated USE-dependency string which can be used to
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# depend on another Lua package being built for the same Lua
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# implementations.
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#
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# Example use:
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# @CODE
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# RDEPEND="dev-lua/foo[${LUA_USEDEP}]"
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# @CODE
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#
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# Example value:
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# @CODE
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# lua_targets_lua5-1(-)?,lua_targets_lua5-2(-)?
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# @CODE
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# @FUNCTION: _lua_single_set_globals
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# @INTERNAL
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# @DESCRIPTION:
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# Sets all the global output variables provided by this eclass.
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# This function must be called once, in global scope.
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_lua_single_set_globals() {
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_lua_set_impls
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local flags=( "${_LUA_SUPPORTED_IMPLS[@]/#/lua_single_target_}" )
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if [[ ${#_LUA_SUPPORTED_IMPLS[@]} -eq 1 ]]; then
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# if only one implementation is supported, use IUSE defaults
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# to avoid requesting the user to enable it
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IUSE="+${flags[0]}"
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else
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IUSE="${flags[*]}"
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fi
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local requse="^^ ( ${flags[*]} )"
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local single_flags="${flags[@]/%/(-)?}"
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local single_usedep=${single_flags// /,}
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local deps= i LUA_PKG_DEP
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for i in "${_LUA_SUPPORTED_IMPLS[@]}"; do
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_lua_export "${i}" LUA_PKG_DEP
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deps+="lua_single_target_${i}? ( ${LUA_PKG_DEP} ) "
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done
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if [[ ${LUA_DEPS+1} ]]; then
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if [[ ${LUA_DEPS} != "${deps}" ]]; then
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eerror "LUA_DEPS have changed between inherits (LUA_REQ_USE?)!"
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eerror "Before: ${LUA_DEPS}"
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eerror "Now : ${deps}"
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die "LUA_DEPS integrity check failed"
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fi
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# these two are formality -- they depend on LUA_COMPAT only
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if [[ ${LUA_REQUIRED_USE} != ${requse} ]]; then
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eerror "LUA_REQUIRED_USE have changed between inherits!"
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eerror "Before: ${LUA_REQUIRED_USE}"
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eerror "Now : ${requse}"
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die "LUA_REQUIRED_USE integrity check failed"
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fi
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if [[ ${LUA_SINGLE_USEDEP} != "${single_usedep}" ]]; then
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eerror "LUA_SINGLE_USEDEP have changed between inherits!"
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eerror "Before: ${LUA_SINGLE_USEDEP}"
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eerror "Now : ${single_usedep}"
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die "LUA_SINGLE_USEDEP integrity check failed"
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fi
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else
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LUA_DEPS=${deps}
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LUA_REQUIRED_USE=${requse}
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LUA_SINGLE_USEDEP=${single_usedep}
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LUA_USEDEP='%LUA_USEDEP-NEEDS-TO-BE-USED-IN-LUA_GEN_COND_DEP%'
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readonly LUA_DEPS LUA_REQUIRED_USE LUA_SINGLE_USEDEP LUA_USEDEP
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fi
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}
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_lua_single_set_globals
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unset -f _lua_single_set_globals
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if [[ ! ${_LUA_SINGLE_R0} ]]; then
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# @FUNCTION: _lua_gen_usedep
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# @USAGE: [<pattern>...]
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# @INTERNAL
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# @DESCRIPTION:
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# Output a USE dependency string for Lua implementations which
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# are both in LUA_COMPAT and match any of the patterns passed
|
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# as parameters to the function.
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#
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# The patterns can be fnmatch-style patterns (matched via bash == operator
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# against LUA_COMPAT values). Remember to escape or quote the fnmatch
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# patterns to prevent accidental shell filename expansion.
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#
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# This is an internal function used to implement lua_gen_cond_dep.
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_lua_gen_usedep() {
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debug-print-function ${FUNCNAME} "${@}"
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local impl matches=()
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_lua_verify_patterns "${@}"
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for impl in "${_LUA_SUPPORTED_IMPLS[@]}"; do
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if _lua_impl_matches "${impl}" "${@}"; then
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||
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matches+=(
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"lua_single_target_${impl}(-)?"
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)
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fi
|
||
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done
|
||
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||
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[[ ${matches[@]} ]] || die "No supported implementations match lua_gen_usedep patterns: ${@}"
|
||
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|
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local out=${matches[@]}
|
||
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echo "${out// /,}"
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||
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}
|
||
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||
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# @FUNCTION: _lua_impl_matches
|
||
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# @USAGE: <impl> [<pattern>...]
|
||
|
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# @INTERNAL
|
||
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# @DESCRIPTION:
|
||
|
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# Check whether the specified <impl> matches at least one
|
||
|
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# of the patterns following it. Return 0 if it does, 1 otherwise.
|
||
|
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# Matches if no patterns are provided.
|
||
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#
|
||
|
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# <impl> can be in LUA_COMPAT or ELUA form. The patterns can be
|
||
|
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# fnmatch-style patterns, e.g. 'lua5*', '..
|
||
|
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_lua_impl_matches() {
|
||
|
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[[ ${#} -ge 1 ]] || die "${FUNCNAME}: takes at least 1 parameter"
|
||
|
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[[ ${#} -eq 1 ]] && return 0
|
||
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|
||
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local impl=${1} pattern
|
||
|
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shift
|
||
|
|
|
||
|
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for pattern; do
|
||
|
|
# unify value style to allow lax matching
|
||
|
|
if [[ ${impl/./-} == ${pattern/./-} ]]; then
|
||
|
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return 0
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
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return 1
|
||
|
|
}
|
||
|
|
|
||
|
|
# @FUNCTION: _lua_verify_patterns
|
||
|
|
# @USAGE: <pattern>...
|
||
|
|
# @INTERNAL
|
||
|
|
# @DESCRIPTION:
|
||
|
|
# Verify whether the patterns passed to the eclass function are correct
|
||
|
|
# (i.e. can match any valid implementation). Dies on wrong pattern.
|
||
|
|
_lua_verify_patterns() {
|
||
|
|
debug-print-function ${FUNCNAME} "${@}"
|
||
|
|
|
||
|
|
local impl pattern
|
||
|
|
for pattern; do
|
||
|
|
for impl in "${_LUA_ALL_IMPLS[@]}"; do
|
||
|
|
[[ ${impl} == ${pattern/./-} ]] && continue 2
|
||
|
|
done
|
||
|
|
|
||
|
|
die "Invalid implementation pattern: ${pattern}"
|
||
|
|
done
|
||
|
|
}
|
||
|
|
|
||
|
|
# @FUNCTION: lua_gen_cond_dep
|
||
|
|
# @USAGE: <dependency> [<pattern>...]
|
||
|
|
# @DESCRIPTION:
|
||
|
|
# Output a list of <dependency>-ies made conditional to USE flags
|
||
|
|
# of Lua implementations which are both in LUA_COMPAT and match
|
||
|
|
# any of the patterns passed as the remaining parameters.
|
||
|
|
#
|
||
|
|
# The patterns can be fnmatch-style patterns (matched via bash == operator
|
||
|
|
# against LUA_COMPAT values). Remember to escape or quote the fnmatch
|
||
|
|
# patterns to prevent accidental shell filename expansion.
|
||
|
|
#
|
||
|
|
# In order to enforce USE constraints on the packages, verbatim
|
||
|
|
# '${LUA_SINGLE_USEDEP}' and '${LUA_USEDEP}' (quoted!) may
|
||
|
|
# be placed in the dependency specification. It will get expanded within
|
||
|
|
# the function into a proper USE dependency string.
|
||
|
|
#
|
||
|
|
# Example:
|
||
|
|
# @CODE
|
||
|
|
# LUA_COMPAT=( lua5-{1..3} )
|
||
|
|
# RDEPEND="$(lua_gen_cond_dep \
|
||
|
|
# 'dev-lua/backported_core_module[${LUA_USEDEP}]' lua5-1 lua5-2 )"
|
||
|
|
# @CODE
|
||
|
|
#
|
||
|
|
# It will cause the variable to look like:
|
||
|
|
# @CODE
|
||
|
|
# RDEPEND="lua_single_target_lua5-1? (
|
||
|
|
# dev-lua/backported_core_module[lua_targets_lua5-1(-)?,...] )
|
||
|
|
# lua_single_target_lua5-2? (
|
||
|
|
# dev-lua/backported_core_module[lua_targets_lua5-2(-)?,...] )"
|
||
|
|
# @CODE
|
||
|
|
lua_gen_cond_dep() {
|
||
|
|
debug-print-function ${FUNCNAME} "${@}"
|
||
|
|
|
||
|
|
local impl matches=()
|
||
|
|
|
||
|
|
local dep=${1}
|
||
|
|
shift
|
||
|
|
|
||
|
|
_lua_verify_patterns "${@}"
|
||
|
|
for impl in "${_LUA_SUPPORTED_IMPLS[@]}"; do
|
||
|
|
if _lua_impl_matches "${impl}" "${@}"; then
|
||
|
|
# substitute ${LUA_SINGLE_USEDEP} if used
|
||
|
|
# (since lua_gen_usedep() will not return
|
||
|
|
# ${LUA_SINGLE_USEDEP}, the code is run at most once)
|
||
|
|
if [[ ${dep} == *'${LUA_SINGLE_USEDEP}'* ]]; then
|
||
|
|
local usedep=$(_lua_gen_usedep "${@}")
|
||
|
|
dep=${dep//\$\{LUA_SINGLE_USEDEP\}/${usedep}}
|
||
|
|
fi
|
||
|
|
local multi_usedep="lua_targets_${impl}(-)"
|
||
|
|
|
||
|
|
local subdep=${dep//\$\{LUA_MULTI_USEDEP\}/${multi_usedep}}
|
||
|
|
matches+=( "lua_single_target_${impl}? (
|
||
|
|
${subdep//\$\{LUA_USEDEP\}/${multi_usedep}} )" )
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
|
echo "${matches[@]}"
|
||
|
|
}
|
||
|
|
|
||
|
|
# @FUNCTION: lua_gen_impl_dep
|
||
|
|
# @USAGE: [<requested-use-flags> [<impl-pattern>...]]
|
||
|
|
# @DESCRIPTION:
|
||
|
|
# Output a dependency on Lua implementations with the specified USE
|
||
|
|
# dependency string appended, or no USE dependency string if called
|
||
|
|
# without the argument (or with empty argument). If any implementation
|
||
|
|
# patterns are passed, the output dependencies will be generated only
|
||
|
|
# for the implementations matching them.
|
||
|
|
#
|
||
|
|
# The patterns can be fnmatch-style patterns (matched via bash == operator
|
||
|
|
# against LUA_COMPAT values). Remember to escape or quote the fnmatch
|
||
|
|
# patterns to prevent accidental shell filename expansion.
|
||
|
|
#
|
||
|
|
# Use this function when you need to request different USE flags
|
||
|
|
# on the Lua interpreter depending on package's USE flags. If you
|
||
|
|
# only need a single set of interpreter USE flags, just set
|
||
|
|
# LUA_REQ_USE and use ${LUA_DEPS} globally.
|
||
|
|
#
|
||
|
|
# Example:
|
||
|
|
# @CODE
|
||
|
|
# LUA_COMPAT=( lua5-{1..3} )
|
||
|
|
# RDEPEND="foo? ( $(lua_gen_impl_dep 'deprecated(+)' lua5-3 ) )"
|
||
|
|
# @CODE
|
||
|
|
#
|
||
|
|
# It will cause the variable to look like:
|
||
|
|
# @CODE
|
||
|
|
# RDEPEND="foo? (
|
||
|
|
# lua_single_target_lua5-3? ( dev-lang/lua:5.3[deprecated(+)] )
|
||
|
|
# )"
|
||
|
|
# @CODE
|
||
|
|
lua_gen_impl_dep() {
|
||
|
|
debug-print-function ${FUNCNAME} "${@}"
|
||
|
|
|
||
|
|
local impl
|
||
|
|
local matches=()
|
||
|
|
|
||
|
|
local LUA_REQ_USE=${1}
|
||
|
|
shift
|
||
|
|
|
||
|
|
_lua_verify_patterns "${@}"
|
||
|
|
for impl in "${_LUA_SUPPORTED_IMPLS[@]}"; do
|
||
|
|
if _lua_impl_matches "${impl}" "${@}"; then
|
||
|
|
local LUA_PKG_DEP
|
||
|
|
_lua_export "${impl}" LUA_PKG_DEP
|
||
|
|
matches+=( "lua_single_target_${impl}? ( ${LUA_PKG_DEP} )" )
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
|
echo "${matches[@]}"
|
||
|
|
}
|
||
|
|
|
||
|
|
# @FUNCTION: lua_setup
|
||
|
|
# @DESCRIPTION:
|
||
|
|
# Determine what the selected Lua implementation is and set
|
||
|
|
# the Lua build environment up for it.
|
||
|
|
lua_setup() {
|
||
|
|
debug-print-function ${FUNCNAME} "${@}"
|
||
|
|
|
||
|
|
unset ELUA
|
||
|
|
|
||
|
|
# support developer override
|
||
|
|
if [[ ${LUA_COMPAT_OVERRIDE} ]]; then
|
||
|
|
local impls=( ${LUA_COMPAT_OVERRIDE} )
|
||
|
|
[[ ${#impls[@]} -eq 1 ]] || die "LUA_COMPAT_OVERRIDE must name exactly one implementation for lua-single"
|
||
|
|
|
||
|
|
ewarn "WARNING: LUA_COMPAT_OVERRIDE in effect. The following Lua"
|
||
|
|
ewarn "implementation will be used:"
|
||
|
|
ewarn
|
||
|
|
ewarn " ${LUA_COMPAT_OVERRIDE}"
|
||
|
|
ewarn
|
||
|
|
ewarn "Dependencies won't be satisfied, and LUA_SINGLE_TARGET flags will be ignored."
|
||
|
|
|
||
|
|
_lua_export "${impls[0]}" ELUA LUA
|
||
|
|
_lua_wrapper_setup
|
||
|
|
einfo "Using ${ELUA} to build"
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
|
||
|
|
local impl
|
||
|
|
for impl in "${_LUA_SUPPORTED_IMPLS[@]}"; do
|
||
|
|
if use "lua_single_target_${impl}"; then
|
||
|
|
if [[ ${ELUA} ]]; then
|
||
|
|
eerror "Your LUA_SINGLE_TARGET setting lists more than a single Lua"
|
||
|
|
eerror "implementation. Please set it to just one value. If you need"
|
||
|
|
eerror "to override the value for a single package, please use package.env"
|
||
|
|
eerror "or an equivalent solution (man 5 portage)."
|
||
|
|
echo
|
||
|
|
die "More than one implementation in LUA_SINGLE_TARGET."
|
||
|
|
fi
|
||
|
|
|
||
|
|
_lua_export "${impl}" ELUA LUA
|
||
|
|
_lua_wrapper_setup
|
||
|
|
einfo "Using ${ELUA} to build"
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
|
||
|
|
if [[ ! ${ELUA} ]]; then
|
||
|
|
eerror "No Lua implementation selected for the build. Please set"
|
||
|
|
eerror "the LUA_SINGLE_TARGET variable in your make.conf to one"
|
||
|
|
eerror "of the following values:"
|
||
|
|
eerror
|
||
|
|
eerror "${_LUA_SUPPORTED_IMPLS[@]}"
|
||
|
|
echo
|
||
|
|
die "No supported Lua implementation in LUA_SINGLE_TARGET."
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# @FUNCTION: lua-single_pkg_setup
|
||
|
|
# @DESCRIPTION:
|
||
|
|
# Runs lua_setup.
|
||
|
|
lua-single_pkg_setup() {
|
||
|
|
debug-print-function ${FUNCNAME} "${@}"
|
||
|
|
|
||
|
|
[[ ${MERGE_TYPE} != binary ]] && lua_setup
|
||
|
|
}
|
||
|
|
|
||
|
|
_LUA_SINGLE_R0=1
|
||
|
|
fi
|