On Sun, 22 May 2016 00:19:49 +0100 [email protected] wrote: > From: Amadeusz Żołnowski <[email protected]> > > It is an eclass providing functions to build Erlang/OTP projects using > dev-util/rebar. All packages in upcoming category dev-erlang are going > to use this eclass. > --- > eclass/rebar.eclass | 223 > ++++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 223 insertions(+) > create mode 100644 eclass/rebar.eclass > > diff --git a/eclass/rebar.eclass b/eclass/rebar.eclass > new file mode 100644 > index 0000000..1a4eaba > --- /dev/null > +++ b/eclass/rebar.eclass > @@ -0,0 +1,223 @@ > +# Copyright 1999-2016 Gentoo Foundation > +# Distributed under the terms of the GNU General Public License v2 > +# $Id$ > + > +# @ECLASS: rebar.eclass > +# @MAINTAINER: > +# Amadeusz Żołnowski <[email protected]> > +# @AUTHOR: > +# Amadeusz Żołnowski <[email protected]> > +# @BLURB: Build Erlang/OTP projects using dev-util/rebar. > +# @DESCRIPTION: > +# An eclass providing functions to build Erlang/OTP projects using > +# dev-util/rebar. > +# > +# rebar is a tool which tries to resolve dependencies itself which is by > +# cloning remote git repositories. Dependant projects are usually expected to > +# be in sub-directory 'deps' rather than looking at system Erlang lib > +# directory. Projects relying on rebar usually don't have 'install' make > +# targets. The eclass workarounds some of these problems. It handles > +# installation in a generic way for Erlang/OTP structured projects. > + > +case "${EAPI:-0}" in > + 0|1|2|3|4|5) > + die "Unsupported EAPI=${EAPI:-0} (too old) for ${ECLASS}" > + ;; > + 6) > + ;; > + *) > + die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}" > + ;; > +esac > + > +EXPORT_FUNCTIONS src_prepare src_compile src_install > + > +RDEPEND="dev-lang/erlang" > +DEPEND="${RDEPEND} > + dev-util/rebar > + >=sys-apps/gawk-4.1" > + > +# @ECLASS-VARIABLE: REBAR_APP_SRC > +# @DESCRIPTION: > +# Relative path to .app.src description file. > +REBAR_APP_SRC="${REBAR_APP_SRC-src/${PN}.app.src}" > + > +# @FUNCTION: get_erl_libs > +# @RETURN: the path to Erlang lib directory > +# @DESCRIPTION: > +# Get the full path without EPREFIX to Erlang lib directory. > +get_erl_libs() { > + echo "/usr/$(get_libdir)/erlang/lib" > +} > + > +# @FUNCTION: _rebar_find_dep > +# @INTERNAL > +# @USAGE: <project_name> > +# @RETURN: full path with EPREFIX to a Erlang package/project on success, > +# code 1 when dependency is not found and code 2 if multiple versions of > +# dependency are found. > +# @DESCRIPTION: > +# Find a Erlang package/project by name in Erlang lib directory. Project > +# directory is usually suffixed with version. It is matched to > '<project_name>' > +# or '<project_name>-*'. > +_rebar_find_dep() { > + local pn="$1" > + local p > + local result > + > + pushd "${EPREFIX}$(get_erl_libs)" >/dev/null || return 1 > + for p in ${pn} ${pn}-*; do > + if [[ -d ${p} ]]; then > + # Ensure there's at most one matching. > + [[ ${result} ]] && return 2 > + result="${p}" > + fi > + done > + popd >/dev/null || die > + > + [[ ${result} ]] || return 1 > + echo "${result}" > +} > + > +# @FUNCTION: erebar > +# @USAGE: <targets> > +# @DESCRIPTION: > +# Run rebar with verbose flag. Die on failure. > +erebar() { > + debug-print-function ${FUNCNAME} "${@}" > + > + (( $# > 0 )) || die "erebar: at least one target is required" > + > + local -x ERL_LIBS="${EPREFIX}$(get_erl_libs)" > + rebar -v skip_deps=true "$@" || die "rebar $@ failed"
Maybe 'die -n', for consistency with emake?
> +}
> +
> +# @FUNCTION: rebar_fix_include_path
> +# @USAGE: <project_name>
> +# @DESCRIPTION:
> +# Fix path in rebar.config to 'include' directory of dependant
> project/package,
> +# so it points to installation in system Erlang lib rather than relative
> 'deps'
> +# directory.
> +#
> +# The function dies on failure.
> +rebar_fix_include_path() {
> + debug-print-function ${FUNCNAME} "${@}"
> +
> + local pn="$1"
> + local erl_libs="${EPREFIX}$(get_erl_libs)"
> + local p
> +
> + p="$(_rebar_find_dep "${pn}")" \
> + || die "failed to unambiguously resolve dependency of '${pn}'"
> +
> + gawk -i inplace \
> + -v erl_libs="${erl_libs}" -v pn="${pn}" -v p="${p}" '
> +/^{[[:space:]]*erl_opts[[:space:]]*,/, /}[[:space:]]*\.$/ {
> + pattern = "\"(./)?deps/" pn "/include\"";
> + if (match($0, "{i,[[:space:]]*" pattern "[[:space:]]*}")) {
> + sub(pattern, "\"" erl_libs "/" p "/include\"");
> + }
> + print $0;
> + next;
> +}
> +1
> +' rebar.config || die "failed to fix include paths in rebar.config for
> '${pn}'"
> +}
> +
> +# @FUNCTION: rebar_remove_deps
> +# @DESCRIPTION:
> +# Remove dependencies list from rebar.config and deceive build rules that any
> +# dependencies are already fetched and built. Otherwise rebar tries to fetch
> +# dependencies and compile them.
> +#
> +# The function dies on failure.
> +rebar_remove_deps() {
> + debug-print-function ${FUNCNAME} "${@}"
> +
> + mkdir -p "${S}/deps" && :>"${S}/deps/.got" && :>"${S}/deps/.built" ||
> die
> + gawk -i inplace '
> +/^{[[:space:]]*deps[[:space:]]*,/, /}[[:space:]]*\.$/ {
> + if ($0 ~ /}[[:space:]]*\.$/) {
> + print "{deps, []}.";
> + }
> + next;
> +}
> +1
> +' rebar.config || die "failed to remove deps from rebar.config"
> +}
> +
> +# @FUNCTION: rebar_set_vsn
> +# @USAGE: [<version>]
> +# @DESCRIPTION:
> +# Set version in project description file if it's not set.
> +#
> +# <version> is optional. Default is PV stripped from version suffix.
> +#
> +# The function dies on failure.
> +rebar_set_vsn() {
> + debug-print-function ${FUNCNAME} "${@}"
> +
> + local version="${1:-${PV%_*}}"
> +
> + sed -e "s/vsn, git/vsn, \"${version}\"/" \
> + -i "${S}/${REBAR_APP_SRC}" \
> + || die "failed to set version in src/${PN}.app.src"
> +}
> +
> +# @FUNCTION: rebar_src_prepare
> +# @DESCRIPTION:
> +# Prevent rebar from fetching in compiling dependencies. Set version in
> project
I think this sentence is incorrect.
> +# description file if it's not set.
> +#
> +# Existence of rebar.config is optional, but file description file must exist
> +# at 'src/${PN}.app.src'.
> +rebar_src_prepare() {
> + debug-print-function ${FUNCNAME} "${@}"
> +
> + default
> + rebar_set_vsn
> + [[ -f rebar.config ]] && rebar_remove_deps
> +}
> +
> +# @FUNCTION: rebar_src_configure
> +# @DESCRIPTION:
> +# Configure with ERL_LIBS set.
> +rebar_src_configure() {
> + debug-print-function ${FUNCNAME} "${@}"
> +
> + local -x ERL_LIBS="${EPREFIX}$(get_erl_libs)"
> + default
> +}
> +
> +# @FUNCTION: rebar_src_compile
> +# @DESCRIPTION:
> +# Compile project with rebar.
> +rebar_src_compile() {
> + debug-print-function ${FUNCNAME} "${@}"
> +
> + erebar compile
> +}
> +
> +# @FUNCTION: rebar_src_install
> +# @DESCRIPTION:
> +# Install BEAM files, include headers, executables and native libraries.
> +# Install standard docs like README or defined in DOCS variable.
> +#
> +# Function expects that project conforms to Erlang/OTP structure.
> +rebar_src_install() {
> + debug-print-function ${FUNCNAME} "${@}"
> +
> + local bin
> + local dest="$(get_erl_libs)/${P}"
> +
> + insinto "${dest}"
> + doins -r ebin
> + [[ -d include ]] && doins -r include
> + [[ -d bin ]] && for bin in bin/*; do dobin "$bin"; done
> +
> + if [[ -d priv ]]; then
> + cp -pR priv "${ED}${dest}/" || die "failed to install priv/"
> + fi
> +
> + einstalldocs
> +}
I think I have no further comments, so the two things above considered,
looks good to go.
--
Best regards,
Michał Górny
<http://dev.gentoo.org/~mgorny/>
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