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authorTupone Alfredo <tupone@gentoo.org>2019-09-05 20:24:07 +0200
committerTupone Alfredo <tupone@gentoo.org>2019-09-12 08:00:46 +0200
commit80aa5f73e588bd8746d5bbf2794a23b3685419d8 (patch)
tree34ad0d676fd2525f04897c7aa4d4a7c9344f4538
parentdev-ruby/parser: add 2.6.4.1 (diff)
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ada.eclass: New eclass for dev-ada packages
Signed-off-by: Alfredo Tupone <tupone@gentoo.org>
-rw-r--r--eclass/ada.eclass435
1 files changed, 435 insertions, 0 deletions
diff --git a/eclass/ada.eclass b/eclass/ada.eclass
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+# Copyright 2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: ada.eclass
+# @MAINTAINER:
+# Ada team <ada@gentoo.org>
+# @AUTHOR:
+# Tupone Alfredo <tupone@gentoo.org>
+# @BLURB: An eclass for Ada packages
+# @DESCRIPTION:
+# This eclass set the IUSE and REQUIRED_USE to request the ADA_TARGET
+# when the inheriting ebuild can be supported by more than one Ada
+# implementation. It also set ADA_USEDEP and ADA_DEPS with a suitable form.
+# A common eclass providing helper functions to build and install
+# packages supporting Ada implementations.
+#
+# This eclass sets correct IUSE. Modification of REQUIRED_USE has to
+# be done by the author of the ebuild (but ADA_REQUIRED_USE is
+# provided for convenience, see below). ada exports ADA_DEPS
+# and ADA_USEDEP so you can create correct dependencies for your
+# package easily.
+#
+# Mostly copied from python-single-r1.eclass
+
+case "${EAPI:-0}" in
+ 0|1|2|3|4)
+ die "Unsupported EAPI=${EAPI:-0} (too old) for ${ECLASS}"
+ ;;
+ 5|6|7)
+ # EAPI=5 is required for sane USE_EXPAND dependencies
+ ;;
+ *)
+ die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
+ ;;
+esac
+
+EXPORT_FUNCTIONS pkg_setup
+
+# @ECLASS-VARIABLE: ADA_DEPS
+# @DESCRIPTION:
+# This is an eclass-generated Ada dependency string for all
+# implementations listed in ADA_COMPAT.
+#
+# The dependency string is conditional on ADA_TARGET.
+#
+# Example use:
+# @CODE
+# RDEPEND="${ADA_DEPS}
+# dev-foo/mydep"
+# DEPEND="${RDEPEND}"
+# @CODE
+#
+
+# @ECLASS-VARIABLE: _ADA_ALL_IMPLS
+# @INTERNAL
+# @DESCRIPTION:
+# All supported Ada implementations, most preferred last.
+_ADA_ALL_IMPLS=(
+ gnat_2016 gnat_2017 gnat_2018 gnat_2019
+)
+readonly _ADA_ALL_IMPLS
+
+
+# @FUNCTION: _ada_impl_supported
+# @USAGE: <impl>
+# @INTERNAL
+# @DESCRIPTION:
+# Check whether the implementation <impl> (ADA_COMPAT-form)
+# is still supported.
+#
+# Returns 0 if the implementation is valid and supported. If it is
+# unsupported, returns 1 -- and the caller should ignore the entry.
+# If it is invalid, dies with an appopriate error messages.
+_ada_impl_supported() {
+ debug-print-function ${FUNCNAME} "${@}"
+
+ [[ ${#} -eq 1 ]] || die "${FUNCNAME}: takes exactly 1 argument (impl)."
+
+ local impl=${1}
+
+ # keep in sync with _ADA_ALL_IMPLS!
+ # (not using that list because inline patterns shall be faster)
+ case "${impl}" in
+ gnat_201[6789])
+ return 0
+ ;;
+ *)
+ [[ ${ADA_COMPAT_NO_STRICT} ]] && return 1
+ die "Invalid implementation in ADA_COMPAT: ${impl}"
+ esac
+}
+
+# @FUNCTION: _ada_set_impls
+# @INTERNAL
+# @DESCRIPTION:
+# Check ADA_COMPAT for well-formedness and validity, then set
+# two global variables:
+#
+# - _ADA_SUPPORTED_IMPLS containing valid implementations supported
+# by the ebuild (ADA_COMPAT - dead implementations),
+#
+# - and _ADA_UNSUPPORTED_IMPLS containing valid implementations that
+# are not supported by the ebuild.
+#
+# Implementations in both variables are ordered using the pre-defined
+# eclass implementation ordering.
+#
+# This function must be called once in global scope by an eclass
+# utilizing ADA_COMPAT.
+_ada_set_impls() {
+ local i
+
+ if ! declare -p ADA_COMPAT &>/dev/null; then
+ die 'ADA_COMPAT not declared.'
+ fi
+ if [[ $(declare -p ADA_COMPAT) != "declare -a"* ]]; then
+ die 'ADA_COMPAT must be an array.'
+ fi
+ for i in "${ADA_COMPAT[@]}"; do
+ # trigger validity checks
+ _ada_impl_supported "${i}"
+ done
+
+ local supp=() unsupp=()
+
+ for i in "${_ADA_ALL_IMPLS[@]}"; do
+ if has "${i}" "${ADA_COMPAT[@]}"; then
+ supp+=( "${i}" )
+ else
+ unsupp+=( "${i}" )
+ fi
+ done
+ if [[ ! ${supp[@]} ]]; then
+ die "No supported implementation in ADA_COMPAT."
+ fi
+
+ if [[ ${_ADA_SUPPORTED_IMPLS[@]} ]]; then
+ # set once already, verify integrity
+ if [[ ${_ADA_SUPPORTED_IMPLS[@]} != ${supp[@]} ]]; then
+ eerror "Supported impls (ADA_COMPAT) changed between inherits!"
+ eerror "Before: ${_ADA_SUPPORTED_IMPLS[*]}"
+ eerror "Now : ${supp[*]}"
+ die "_ADA_SUPPORTED_IMPLS integrity check failed"
+ fi
+ if [[ ${_ADA_UNSUPPORTED_IMPLS[@]} != ${unsupp[@]} ]]; then
+ eerror "Unsupported impls changed between inherits!"
+ eerror "Before: ${_ADA_UNSUPPORTED_IMPLS[*]}"
+ eerror "Now : ${unsupp[*]}"
+ die "_ADA_UNSUPPORTED_IMPLS integrity check failed"
+ fi
+ else
+ _ADA_SUPPORTED_IMPLS=( "${supp[@]}" )
+ _ADA_UNSUPPORTED_IMPLS=( "${unsupp[@]}" )
+ readonly _ADA_SUPPORTED_IMPLS _ADA_UNSUPPORTED_IMPLS
+ fi
+}
+
+# @FUNCTION: ada_export
+# @USAGE: [<impl>] <variables>...
+# @DESCRIPTION:
+# Set and export the Ada implementation-relevant variables passed
+# as parameters.
+#
+# The optional first parameter may specify the requested Ada
+# implementation (either as ADA_TARGETS value, e.g. ada2_7,
+# or an EADA one, e.g. ada2.7). If no implementation passed,
+# the current one will be obtained from ${EADA}.
+#
+# The variables which can be exported are: GCC, EADA, GNATMAKE.
+# They are described more completely in the eclass
+# variable documentation.
+ada_export() {
+ debug-print-function ${FUNCNAME} "${@}"
+
+ local impl var
+
+ case "${1}" in
+ gnat_201[6789])
+ impl=${1}
+ shift
+ ;;
+ *)
+ impl=${EADA}
+ if [[ -z ${impl} ]]; then
+ die "ada_export called without a ada implementation and EADA is unset"
+ fi
+ ;;
+ esac
+ debug-print "${FUNCNAME}: implementation: ${impl}"
+
+ local gcc_pv
+ case "${impl}" in
+ gnat_2016)
+ gcc_pv=4.9.4
+ ;;
+ gnat_2017)
+ gcc_pv=6.3.0
+ ;;
+ gnat_2018)
+ gcc_pv=7.3.1
+ ;;
+ gnat_2019)
+ gcc_pv=8.3.1
+ ;;
+ *)
+ gcc_pv="9.9.9"
+ ;;
+ esac
+
+ for var; do
+ case "${var}" in
+ EADA)
+ export EADA=${impl}
+ debug-print "${FUNCNAME}: EADA = ${EADA}"
+ ;;
+ GCC)
+ export GCC=${EPREFIX}/usr/bin/gcc-${gcc_pv}
+ debug-print "${FUNCNAME}: GCC = ${GCC}"
+ ;;
+ GCC_PV)
+ export GCC_PV=${gcc_pv}
+ debug-print "${FUNCNAME}: GCC_PV = ${GCC_PV}"
+ ;;
+ GNATBIND)
+ export GNATBIND=${EPREFIX}/usr/bin/gnatbind-${gcc_pv}
+ debug-print "${FUNCNAME}: GNATBIND = ${GNATBIND}"
+ ;;
+ GNATMAKE)
+ export GNATMAKE=${EPREFIX}/usr/bin/gnatmake-${gcc_pv}
+ debug-print "${FUNCNAME}: GNATMAKE = ${GNATMAKE}"
+ ;;
+ GNATLS)
+ export GNATLS=${EPREFIX}/usr/bin/gnatls-${gcc_pv}
+ debug-print "${FUNCNAME}: GNATLS = ${GNATLS}"
+ ;;
+ ADA_PKG_DEP)
+ ADA_PKG_DEP="dev-lang/gnat-gpl:${gcc_pv}"
+
+ # use-dep
+ if [[ ${ADA_REQ_USE} ]]; then
+ ADA_PKG_DEP+=[${ADA_REQ_USE}]
+ fi
+
+ export ADA_PKG_DEP
+ debug-print "${FUNCNAME}: ADA_PKG_DEP = ${ADA_PKG_DEP}"
+ ;;
+ *)
+ die "ada_export: unknown variable ${var}"
+ esac
+ done
+}
+
+_ada_single_set_globals() {
+ _ada_set_impls
+ local i ADA_PKG_DEP
+
+ local flags=( "${_ADA_SUPPORTED_IMPLS[@]/#/ada_target_}" )
+ local unflags=( "${_ADA_UNSUPPORTED_IMPLS[@]/#/-ada_target_}" )
+ local allflags=( ${flags[@]} ${unflags[@]} )
+
+ local optflags=${flags[@]/%/(-)?}
+
+ IUSE="${allflags[*]}"
+
+ if [[ ${#_ADA_UNSUPPORTED_IMPLS[@]} -gt 0 ]]; then
+ optflags+=,${unflags[@]/%/(-)}
+ fi
+
+ local deps requse usedep
+ if [[ ${#_ADA_SUPPORTED_IMPLS[@]} -eq 1 ]]; then
+ # There is only one supported implementation; set IUSE and other
+ # variables without ADA_SINGLE_TARGET.
+ requse=${flags[*]}
+ ada_export "${_ADA_SUPPORTED_IMPLS[0]}" ADA_PKG_DEP
+ deps="${flags[*]}? ( ${ADA_PKG_DEP} ) "
+ else
+ # Multiple supported implementations; honor ADA_TARGET.
+ requse="^^ ( ${flags[*]} )"
+
+ for i in "${_ADA_SUPPORTED_IMPLS[@]}"; do
+ ada_export "${i}" ADA_PKG_DEP
+ deps+="ada_target_${i}? ( ${ADA_PKG_DEP} ) "
+ done
+ fi
+ usedep=${optflags// /,}
+ if [[ ${ADA_DEPS+1} ]]; then
+ if [[ ${ADA_DEPS} != "${deps}" ]]; then
+ eerror "ADA_DEPS have changed between inherits (ADA_REQ_USE?)!"
+ eerror "Before: ${ADA_DEPS}"
+ eerror "Now : ${deps}"
+ die "ADA_DEPS integrity check failed"
+ fi
+
+ # these two are formality -- they depend on ADA_COMPAT only
+ if [[ ${ADA_REQUIRED_USE} != ${requse} ]]; then
+ eerror "ADA_REQUIRED_USE have changed between inherits!"
+ eerror "Before: ${ADA_REQUIRED_USE}"
+ eerror "Now : ${requse}"
+ die "ADA_REQUIRED_USE integrity check failed"
+ fi
+
+ if [[ ${ADA_USEDEP} != "${usedep}" ]]; then
+ eerror "ADA_USEDEP have changed between inherits!"
+ eerror "Before: ${ADA_USEDEP}"
+ eerror "Now : ${usedep}"
+ die "ADA_USEDEP integrity check failed"
+ fi
+ else
+ ADA_DEPS=${deps}
+ ADA_REQUIRED_USE=${requse}
+ ADA_USEDEP=${usedep}
+ readonly ADA_DEPS ADA_REQUIRED_USE ADA_USEDEP
+ fi
+}
+_ada_single_set_globals
+unset -f _ada_single_set_globals
+
+# @FUNCTION: ada_wrapper_setup
+# @USAGE: [<path> [<impl>]]
+# @DESCRIPTION:
+# Create proper 'ada' executable wrappers
+# in the directory named by <path>. Set up PATH
+# appropriately. <path> defaults to ${T}/${EADA}.
+#
+# The wrappers will be created for implementation named by <impl>,
+# or for one named by ${EADA} if no <impl> passed.
+#
+# If the named directory contains a ada symlink already, it will
+# be assumed to contain proper wrappers already and only environment
+# setup will be done. If wrapper update is requested, the directory
+# shall be removed first.
+ada_wrapper_setup() {
+ debug-print-function ${FUNCNAME} "${@}"
+
+ local workdir=${1:-${T}/${EADA}}
+ local impl=${2:-${EADA}}
+
+ [[ ${workdir} ]] || die "${FUNCNAME}: no workdir specified."
+ [[ ${impl} ]] || die "${FUNCNAME}: no impl nor EADA specified."
+
+ if [[ ! -x ${workdir}/bin/gnatmake ]]; then
+ mkdir -p "${workdir}"/bin || die
+
+ local GCC GNATMAKE GNATLS GNATBIND
+ ada_export "${impl}" GCC GNATMAKE GNATLS GNATBIND
+
+ # Ada compiler
+ cat > "${workdir}/bin/gcc" <<-_EOF_ || die
+ #!/bin/sh
+ exec "${GCC}" "\${@}"
+ _EOF_
+ chmod a+x "${workdir}/bin/gcc"
+ cat > "${workdir}/bin/gnatmake" <<-_EOF_ || die
+ #!/bin/sh
+ exec "${GNATMAKE}" "\${@}"
+ _EOF_
+ chmod a+x "${workdir}/bin/gnatmake"
+ cat > "${workdir}/bin/gnatls" <<-_EOF_ || die
+ #!/bin/sh
+ exec "${GNATLS}" "\${@}"
+ _EOF_
+ chmod a+x "${workdir}/bin/gnatls"
+ cat > "${workdir}/bin/gnatbind" <<-_EOF_ || die
+ #!/bin/sh
+ exec "${GNATBIND}" "\${@}"
+ _EOF_
+ chmod a+x "${workdir}/bin/gnatbind"
+ fi
+
+ # Now, set the environment.
+ # But note that ${workdir} may be shared with something else,
+ # and thus already on top of PATH.
+ if [[ ${PATH##:*} != ${workdir}/bin ]]; then
+ PATH=${workdir}/bin${PATH:+:${PATH}}
+ fi
+ export PATH
+}
+
+# @FUNCTION: ada_setup
+# @DESCRIPTION:
+# Determine what the selected Ada implementation is and set
+# the Ada build environment up for it.
+ada_setup() {
+ debug-print-function ${FUNCNAME} "${@}"
+
+ unset EADA
+
+ if [[ ${#_ADA_SUPPORTED_IMPLS[@]} -eq 1 ]]; then
+ if use "ada_targets_${_ADA_SUPPORTED_IMPLS[0]}"; then
+ # Only one supported implementation, enable it explicitly
+ ada_export "${_ADA_SUPPORTED_IMPLS[0]}" EADA GCC GCC_PV GNATMAKE
+ ada_wrapper_setup
+ fi
+ else
+ local impl
+ for impl in "${_ADA_SUPPORTED_IMPLS[@]}"; do
+ if use "ada_target_${impl}"; then
+ if [[ ${EADA} ]]; then
+ eerror "Your ADA_TARGET setting lists more than a single Ada"
+ eerror "implementation. Please set it to just one value. If you need"
+ eerror "to override the value for a single package, please use package.env"
+ eerror "or an equivalent solution (man 5 portage)."
+ echo
+ die "More than one implementation in ADA_TARGET."
+ fi
+
+ ada_export "${impl}" EADA GCC GCC_PV GNATMAKE
+ ada_wrapper_setup
+ fi
+ done
+ fi
+
+ if [[ ! ${EADA} ]]; then
+ eerror "No Ada implementation selected for the build. Please set"
+ if [[ ${#_ADA_SUPPORTED_IMPLS[@]} -eq 1 ]]; then
+ eerror "the ADA_TARGETS variable in your make.conf to include one"
+ else
+ eerror "the ADA_SINGLE_TARGET variable in your make.conf to one"
+ fi
+ eerror "of the following values:"
+ eerror
+ eerror "${_ADA_SUPPORTED_IMPLS[@]}"
+ echo
+ die "No supported Ada implementation in ADA_SINGLE_TARGET/ADA_TARGETS."
+ fi
+}
+
+# @FUNCTION: ada_pkg_setup
+# @DESCRIPTION:
+# Runs ada_setup.
+ada_pkg_setup() {
+ debug-print-function ${FUNCNAME} "${@}"
+
+ [[ ${MERGE_TYPE} != binary ]] && ada_setup
+}