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211 lines
6.7 KiB
211 lines
6.7 KiB
# Copyright 2018-2020 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: libretro-core.eclass
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# @MAINTAINER:
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# candrews@gentoo.org
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# @AUTHOR:
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# Cecil Curry <leycec@gmail.com>
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# Craig Andrews <candrews@gentoo.org>
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# @SUPPORTED_EAPIS: 6 7
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# @BLURB: Simplify libretro core ebuilds
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# @DESCRIPTION:
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# The libretro eclass is designed to streamline the construction of
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# ebuilds for Libretro core ebuilds.
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#
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# Libretro cores can be found under https://github.com/libretro/
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#
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# They all use the same basic make based build system, are located
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# in the same github account, and do not release named or numbered
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# versions (so ebuild versions for git commits are keys).
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# This eclass covers those commonalities reducing much duplication
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# between the ebuilds.
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# @EXAMPLE:
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# @CODE
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# EAPI=7
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#
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# LIBRETRO_CORE_NAME="2048"
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# LIBRETRO_COMMIT_SHA="45655d3662e4cbcd8afb28e2ee3f5494a75888de"
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# KEYWORDS="~amd64 ~x86"
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# inherit libretro-core
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#
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# DESCRIPTION="Port of 2048 puzzle game to the libretro API"
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# LICENSE="Unlicense"
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# SLOT="0"
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# @CODE
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if [[ -z ${_LIBRETRO_CORE_ECLASS} ]]; then
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_LIBRETRO_CORE_ECLASS=1
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IUSE="debug"
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# @ECLASS-VARIABLE: LIBRETRO_CORE_NAME
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# @REQUIRED
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# @DESCRIPTION:
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# Name of this Libretro core. The libretro-core_src_install() phase function
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# will install the shared library "${S}/${LIBRETRO_CORE_NAME}_libretro.so" as a
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# Libretro core. Defaults to the name of the current package with the
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# "libretro-" prefix excluded and hyphens replaced with underscores
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# (e.g. genesis_plus_gx for libretro-genesis-plus-gx)
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if [[ -z "${LIBRETRO_CORE_NAME}" ]]; then
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LIBRETRO_CORE_NAME=${PN#libretro-}
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LIBRETRO_CORE_NAME=${LIBRETRO_CORE_NAME//-/_}
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fi
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# @ECLASS-VARIABLE: LIBRETRO_COMMIT_SHA
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# @DESCRIPTION:
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# Commit SHA used for SRC_URI will die if not set in <9999 ebuilds.
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# Needs to be set before inherit.
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# @ECLASS-VARIABLE: LIBRETRO_REPO_NAME
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# @REQUIRED
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# @DESCRIPTION:
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# Contains the real repo name of the core formatted as "repouser/reponame".
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# Needs to be set before inherit. Otherwise defaults to "libretro/${PN}"
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: ${LIBRETRO_REPO_NAME:="libretro/libretro-${LIBRETRO_CORE_NAME}"}
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: ${HOMEPAGE:="https://github.com/${LIBRETRO_REPO_NAME}"}
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if [[ ${PV} == *9999 ]]; then
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: ${EGIT_REPO_URI:="https://github.com/${LIBRETRO_REPO_NAME}.git"}
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inherit git-r3
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else
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[[ -z "${LIBRETRO_COMMIT_SHA}" ]] && die "LIBRETRO_COMMIT_SHA must be set before inherit."
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S="${WORKDIR}/${LIBRETRO_REPO_NAME##*/}-${LIBRETRO_COMMIT_SHA}"
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: ${SRC_URI:="https://github.com/${LIBRETRO_REPO_NAME}/archive/${LIBRETRO_COMMIT_SHA}.tar.gz -> ${P}.tar.gz"}
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fi
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inherit flag-o-matic toolchain-funcs
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case "${EAPI:-0}" in
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6|7)
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EXPORT_FUNCTIONS src_unpack src_prepare src_compile src_install
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;;
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*)
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die "EAPI=${EAPI} is not supported" ;;
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esac
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# @FUNCTION: libretro-core_src_unpack
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# @DESCRIPTION:
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# The libretro-core src_unpack function which is exported.
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#
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# This function retrieves the remote Libretro core info files.
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libretro-core_src_unpack() {
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# If this is a live ebuild, retrieve this core's remote repository.
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if [[ ${PV} == *9999 ]]; then
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git-r3_src_unpack
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# Add used commit SHA for version information, the above could also work.
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LIBRETRO_COMMIT_SHA=$(git -C "${WORKDIR}/${P}" rev-parse HEAD)
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# Else, unpack this core's local tarball.
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else
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default_src_unpack
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fi
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}
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# @FUNCTION: libretro-core_src_prepare
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# @DESCRIPTION:
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# The libretro-core src_prepare function which is exported.
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#
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# This function prepares the source by making custom modifications.
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libretro-core_src_prepare() {
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default_src_prepare
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# Populate COMMIT for GIT_VERSION
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local custom_libretro_commit_sha="\" ${LIBRETRO_COMMIT_SHA:0:7}\""
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local makefile
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local flags_modified=0
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local shopt_saved=$(shopt -p nullglob)
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shopt -s nullglob
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for makefile in "${S}"/[Mm]akefile* "${S}"/target-libretro/[Mm]akefile*; do
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# * Convert CRLF to LF
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# * Expand *FLAGS to prevent potential self-references
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# * Where LDFLAGS directly define the link version
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# script append LDFLAGS and LIBS
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# * Where SHARED is used to provide shared linking
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# flags ensure final link command includes LDFLAGS
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# and LIBS
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# * Always use $(CFLAGS) when calling $(CC)
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# * Add short-rev to Makefile
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sed \
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-e 's/\r$//g' \
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-e "/flags.*=/s|-O[[:digit:]]|${CFLAGS}|g" \
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-e "/CFLAGS.*=/s|-O[[:digit:]]|${CFLAGS}|g" \
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-e "/CXXFLAGS.*=/s|-O[[:digit:]]|${CXXFLAGS}|g" \
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-e "/.*,--version-script=.*/s|$| ${LDFLAGS} ${LIBS}|g" \
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-e "/\$(CC)/s|\(\$(SHARED)\)|\1 ${LDFLAGS} ${LIBS}|" \
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-e 's|\(\$(CC)\)|\1 \$(CFLAGS)|g' \
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-e "s/GIT_VERSION\s.=.*$/GIT_VERSION=${custom_libretro_commit_sha}/g" \
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-i "${makefile}" || die "Failed to use custom cflags in ${makefile}"
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done
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${shopt_saved}
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export OPTFLAGS="${CFLAGS}"
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}
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# @VARIABLE: myemakeargs
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# @DEFAULT_UNSET
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# @DESCRIPTION:
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# Optional emake arguments as a bash array. Should be defined before calling
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# src_compile.
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# @CODE
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# src_compile() {
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# local myemakeargs=(
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# $(usex neon "HAVE_NEON=1" "")
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# )
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# libretro-core_src_compile
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# }
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# @CODE
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# @FUNCTION: libretro-core_src_compile
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# @DESCRIPTION:
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# The libretro-core src_compile function which is exported.
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#
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# This function compiles the shared library for this Libretro core.
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libretro-core_src_compile() {
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# most (if not all) libretro makefiles use DEBUG=1
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# to enable additional debug features.
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emake CC=$(tc-getCC) CXX=$(tc-getCXX) \
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$(usex debug "DEBUG=1" "") "${myemakeargs[@]}" \
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$([[ -f makefile.libretro ]] && echo '-f makefile.libretro') \
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$([[ -f Makefile.libretro ]] && echo '-f Makefile.libretro')
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}
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# @VARIABLE: LIBRETRO_CORE_LIB_FILE
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# @DEFAULT_UNSET
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# @DESCRIPTION:
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# Absolute path of this Libretro core's shared library.
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# src_install.
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# @CODE
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# src_install() {
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# local LIBRETRO_CORE_LIB_FILE="${S}/somecore_libretro.so"
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#
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# libretro-core_src_install
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# }
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# @CODE
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# @FUNCTION: libretro-core_src_install
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# @DESCRIPTION:
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# The libretro-core src_install function which is exported.
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#
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# This function installs the shared library for this Libretro core.
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libretro-core_src_install() {
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local LIBRETRO_CORE_LIB_FILE=${LIBRETRO_CORE_LIB_FILE:-"${S}/${LIBRETRO_CORE_NAME}_libretro.so"}
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# Absolute path of the directory containing Libretro shared libraries.
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local libretro_lib_dir="/usr/$(get_libdir)/libretro"
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# If this core's shared library exists, install that.
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if [[ -f "${LIBRETRO_CORE_LIB_FILE}" ]]; then
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exeinto "${libretro_lib_dir}"
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doexe "${LIBRETRO_CORE_LIB_FILE}"
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else
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# Basename of this library.
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local lib_basename="${LIBRETRO_CORE_LIB_FILE##*/}"
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# Absolute path to which this library was installed.
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local lib_file_target="${ED}${libretro_lib_dir}/${lib_basename}"
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# If this library was *NOT* installed, fail.
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[[ -f "${lib_file_target}" ]] ||
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die "Libretro core shared library \"${lib_file_target}\" not installed."
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fi
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}
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fi # end _LIBRETRO_CORE_ECLASS guard
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