I'm proposing the addition of a new eclass, libretro-core.eclass, which
I'll use when adding a number of libretro ebuilds.
The pull request which includes this eclass as well as a few ebuilds
using it (with more to come) can be found at
https://github.com/gentoo/gentoo/pull/9330
Thanks,
~Craig
---
eclass/libretro-core.eclass | 168 ++++++++++++++++++++++++++++++++++++
1 file changed, 168 insertions(+)
create mode 100644 eclass/libretro-core.eclass
diff --git a/eclass/libretro-core.eclass b/eclass/libretro-core.eclass
new file mode 100644
index 000000000000..c82420ac98cc
--- /dev/null
+++ b/eclass/libretro-core.eclass
@@ -0,0 +1,168 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: libretro-core.eclass
+# @MAINTAINER:
+# candr...@gentoo.org
+# @AUTHOR:
+# Cecil Curry <ley...@gmail.com>
+# Craig Andrews <candr...@gentoo.org>
+# @BLURB: An eclass to streamline the construction of Libretro core
ebuilds
+# @DESCRIPTION:
+# The libretro eclass is designed to streamline the construction of
+# ebuilds for low-level Libretro core ebuilds.
+
+if [[ -z ${_LIBRETRO_CORE_ECLASS} ]]; then
+_LIBRETRO_CORE_ECLASS=1
+
+IUSE="debug"
+RDEPEND=" games-emulation/libretro-info"
+
+# @ECLASS-VARIABLE: LIBRETRO_CORE_NAME
+# @REQUIRED
+# @DESCRIPTION:
+# Name of this Libretro core. The libretro-core_src_install() phase
function
+# will install the shared library
"${S}/${LIBRETRO_CORE_NAME}_libretro.so" as a
+# Libretro core. Defaults to the name of the current package excluding
the
+# "libretro-" prefix (e.g., "mgba" for the package "libretro-mgba").
+: ${LIBRETRO_CORE_NAME:=${PN#libretro-}}
+
+# @ECLASS-VARIABLE: LIBRETRO_COMMIT_SHA
+# @DESCRIPTION:
+# Commit SHA used for SRC_URI will die if not set in <9999 ebuilds.
+# Needs to be set before inherit.
+
+# @ECLASS-VARIABLE: LIBRETRO_REPO_NAME
+# @REQUIRED
+# @DESCRIPTION:
+# Contains the real repo name of the core formatted as
"repouser/reponame".
+# Needs to be set before inherit. Otherwise defaults to
"libretro/${PN}"
+: ${LIBRETRO_REPO_NAME:="libretro/libretro-${LIBRETRO_CORE_NAME}"}
+
+: ${HOMEPAGE:="https://github.com/${LIBRETRO_REPO_NAME}"}
+
+if [[ ${PV} == *9999 ]]; then
+ : ${EGIT_REPO_URI:="https://github.com/${LIBRETRO_REPO_NAME}.git"}
+ inherit git-r3
+else
+ [[ -z "${LIBRETRO_COMMIT_SHA}" ]] && die "LIBRETRO_COMMIT_SHA must be
set before inherit."
+ S="${WORKDIR}/${LIBRETRO_REPO_NAME##*/}-${LIBRETRO_COMMIT_SHA}"
+ :
${SRC_URI:="https://github.com/${LIBRETRO_REPO_NAME}/archive/${LIBRETRO_COMMIT_SHA}.tar.gz
-> ${P}.tar.gz"}
+fi
+inherit flag-o-matic
+
+# @ECLASS-VARIABLE: LIBRETRO_CORE_LIB_FILE
+# @REQUIRED
+# @DESCRIPTION:
+# Absolute path of this Libretro core's shared library.
+: ${LIBRETRO_CORE_LIB_FILE:="${S}/${LIBRETRO_CORE_NAME}_libretro.so"}
+
+case "${EAPI:-0}" in
+ 6)
+ EXPORT_FUNCTIONS src_unpack src_prepare src_compile src_install
+ ;;
+ *)
+ die "EAPI=${EAPI} is not supported" ;;
+esac
+
+# @FUNCTION: libretro-core_src_unpack
+# @DESCRIPTION:
+# The libretro-core src_unpack function which is exported.
+#
+# This function retrieves the remote Libretro core info files.
+libretro-core_src_unpack() {
+ # If this is a live ebuild, retrieve this core's remote repository.
+ if [[ ${PV} == *9999 ]]; then
+ git-r3_src_unpack
+ # Add used commit SHA for version information, the above could also
work.
+ LIBRETRO_COMMIT_SHA=$(git -C
"${EGIT3_STORE_DIR}/${LIBRETRO_REPO_NAME//\//_}.git" rev-parse HEAD)
+ # Else, unpack this core's local tarball.
+ else
+ default_src_unpack
+ fi
+}
+
+# @FUNCTION: libretro-core_src_prepare
+# @DESCRIPTION:
+# The libretro-core src_prepare function which is exported.
+#
+# This function prepares the source by making custom modifications.
+libretro-core_src_prepare() {
+ local flags_modified=0
+ ebegin "Attempting to hack Makefiles to use custom-cflags"
+ for makefile in "${S}"/?akefile* "${S}"/target-libretro/?akefile*; do
+ # * Convert CRLF to LF
+ # * Expand *FLAGS to prevent potential self-references
+ # * Where LDFLAGS directly define the link version
+ # script append LDFLAGS and LIBS
+ # * Where SHARED is used to provide shared linking
+ # flags ensure final link command includes LDFLAGS
+ # and LIBS
+ # * Always use $(CFLAGS) when calling $(CC)
+ sed \
+ -e 's/\r$//g' \
+ -e "/flags.*=/s/-O[[:digit:]]/${CFLAGS}/g" \
+ -e "/CFLAGS.*=/s/-O[[:digit:]]/${CFLAGS}/g" \
+ -e "/.*,--version-script=.*/s/$/ ${LDFLAGS} ${LIBS}/g" \
+ -e "/\$(CC)/s/\(\$(SHARED)\)/\1 ${LDFLAGS} ${LIBS}/" \
+ -e 's/\(\$(CC)\)/\1 \$(CFLAGS)/g' \
+ -i "${makefile}" \
+ &> /dev/null && flags_modified=1
+ done
+ [[ ${flags_modified} == 1 ]] && true || false
+ eend $?
+ export OPTFLAGS="${CFLAGS}"
+
+ # Populate COMMIT for GIT_VERSION
+ if [[ -z "${CUSTOM_LIBRETRO_COMMIT_SHA}" ]]; then
+ CUSTOM_LIBRETRO_COMMIT_SHA="\" ${LIBRETRO_COMMIT_SHA:0:7}\""
+ fi
+
+ for makefile in "${S}"/?akefile* "${S}"/target-libretro/?akefile*; do
+ # Add short-rev to Makefile
+ sed \
+ -e
"s/GIT_VERSION\s.=.*$/GIT_VERSION=${CUSTOM_LIBRETRO_COMMIT_SHA}/g" \
+ -i "${makefile}" \
+ &> /dev/null
+ done
+ default_src_prepare
+}
+
+# @FUNCTION: libretro-core_src_compile
+# @DESCRIPTION:
+# The libretro-core src_compile function which is exported.
+#
+# This function compiles the shared library for this Libretro core.
+libretro-core_src_compile() {
+ emake CC=$(tc-getCC) CXX=$(tc-getCXX) \
+ $(usex debug "DEBUG=1" "") "${myemakeargs[@]}" \
+ $([[ -f makefile.libretro ]] && echo '-f makefile.libretro') \
+ $([[ -f Makefile.libretro ]] && echo '-f Makefile.libretro')
+}
+
+# @FUNCTION: libretro-core_src_install
+# @DESCRIPTION:
+# The libretro-core src_install function which is exported.
+#
+# This function installs the shared library for this Libretro core.
+libretro-core_src_install() {
+ # Absolute path of the directory containing Libretro shared libraries.
+ LIBRETRO_LIB_DIR="/usr/$(get_libdir)/libretro"
+ # If this core's shared library exists, install that.
+ if [[ -f "${LIBRETRO_CORE_LIB_FILE}" ]]; then
+ insinto "${LIBRETRO_LIB_DIR}"
+ doins "${LIBRETRO_CORE_LIB_FILE}"
+ else
+ # Basename of this library.
+ local lib_basename="${LIBRETRO_CORE_LIB_FILE##*/}"
+
+ # Absolute path to which this library was installed.
+ local lib_file_target="${ED}${LIBRETRO_LIB_DIR}/${lib_basename}"
+
+ # If this library was *NOT* installed, fail.
+ [[ -f "${lib_file_target}" ]] ||
+ die "Libretro core shared library \"${lib_file_target}\" not
installed."
+ fi
+}
+
+fi
--
2.18.0
