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0b404c4125
This is a workaround for failing coverage. Coverage is not relevant in this context, so there's no harm to disable it, although the issue should be fixed.
259 lines
6.8 KiB
Bash
259 lines
6.8 KiB
Bash
# Copyright 1999-2016 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: rebar.eclass
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# @MAINTAINER:
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# Amadeusz Żołnowski <aidecoe@gentoo.org>
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# @AUTHOR:
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# Amadeusz Żołnowski <aidecoe@gentoo.org>
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# @BLURB: Build Erlang/OTP projects using dev-util/rebar.
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# @DESCRIPTION:
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# An eclass providing functions to build Erlang/OTP projects using
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# dev-util/rebar.
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#
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# rebar is a tool which tries to resolve dependencies itself which is by
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# cloning remote git repositories. Dependant projects are usually expected to
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# be in sub-directory 'deps' rather than looking at system Erlang lib
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# directory. Projects relying on rebar usually don't have 'install' make
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# targets. The eclass workarounds some of these problems. It handles
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# installation in a generic way for Erlang/OTP structured projects.
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case "${EAPI:-0}" in
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0|1|2|3|4|5)
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die "Unsupported EAPI=${EAPI:-0} (too old) for ${ECLASS}"
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;;
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6)
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;;
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*)
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die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
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;;
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esac
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EXPORT_FUNCTIONS src_prepare src_compile src_test src_install
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RDEPEND="dev-lang/erlang"
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DEPEND="${RDEPEND}
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dev-util/rebar
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>=sys-apps/gawk-4.1"
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# @ECLASS-VARIABLE: REBAR_APP_SRC
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# @DESCRIPTION:
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# Relative path to .app.src description file.
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REBAR_APP_SRC="${REBAR_APP_SRC-src/${PN}.app.src}"
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# @FUNCTION: get_erl_libs
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# @RETURN: the path to Erlang lib directory
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# @DESCRIPTION:
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# Get the full path without EPREFIX to Erlang lib directory.
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get_erl_libs() {
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echo "/usr/$(get_libdir)/erlang/lib"
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}
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# @FUNCTION: _rebar_find_dep
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# @INTERNAL
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# @USAGE: <project_name>
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# @RETURN: full path with EPREFIX to a Erlang package/project on success,
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# code 1 when dependency is not found and code 2 if multiple versions of
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# dependency are found.
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# @DESCRIPTION:
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# Find a Erlang package/project by name in Erlang lib directory. Project
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# directory is usually suffixed with version. It is matched to '<project_name>'
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# or '<project_name>-*'.
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_rebar_find_dep() {
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local pn="$1"
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local p
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local result
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pushd "${EPREFIX}$(get_erl_libs)" >/dev/null || return 1
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for p in ${pn} ${pn}-*; do
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if [[ -d ${p} ]]; then
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# Ensure there's at most one matching.
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[[ ${result} ]] && return 2
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result="${p}"
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fi
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done
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popd >/dev/null || die
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[[ ${result} ]] || return 1
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echo "${result}"
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}
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# @FUNCTION: rebar_disable_coverage
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# @USAGE: [<rebar_config>]
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# @DESCRIPTION:
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# Disable coverage in rebar.config. This is a workaround for failing coverage.
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# Coverage is not relevant in this context, so there's no harm to disable it,
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# although the issue should be fixed.
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rebar_disable_coverage() {
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debug-print-function ${FUNCNAME} "${@}"
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local rebar_config="${1:-rebar.config}"
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sed -e 's/{cover_enabled, true}/{cover_enabled, false}/' \
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-i "${rebar_config}" \
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|| die "failed to disable coverage in ${rebar_config}"
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}
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# @FUNCTION: erebar
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# @USAGE: <targets>
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# @DESCRIPTION:
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# Run rebar with verbose flag. Die on failure.
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erebar() {
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debug-print-function ${FUNCNAME} "${@}"
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(( $# > 0 )) || die "erebar: at least one target is required"
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local -x ERL_LIBS="${EPREFIX}$(get_erl_libs)"
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rebar -v skip_deps=true "$@" || die -n "rebar $@ failed"
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}
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# @FUNCTION: rebar_fix_include_path
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# @USAGE: <project_name> [<rebar_config>]
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# @DESCRIPTION:
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# Fix path in rebar.config to 'include' directory of dependant project/package,
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# so it points to installation in system Erlang lib rather than relative 'deps'
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# directory.
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#
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# <rebar_config> is optional. Default is 'rebar.config'.
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#
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# The function dies on failure.
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rebar_fix_include_path() {
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debug-print-function ${FUNCNAME} "${@}"
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local pn="$1"
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local rebar_config="${2:-rebar.config}"
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local erl_libs="${EPREFIX}$(get_erl_libs)"
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local p
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p="$(_rebar_find_dep "${pn}")" \
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|| die "failed to unambiguously resolve dependency of '${pn}'"
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gawk -i inplace \
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-v erl_libs="${erl_libs}" -v pn="${pn}" -v p="${p}" '
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/^{[[:space:]]*erl_opts[[:space:]]*,/, /}[[:space:]]*\.$/ {
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pattern = "\"(./)?deps/" pn "/include\"";
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if (match($0, "{i,[[:space:]]*" pattern "[[:space:]]*}")) {
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sub(pattern, "\"" erl_libs "/" p "/include\"");
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}
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print $0;
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next;
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}
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1
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' "${rebar_config}" || die "failed to fix include paths in ${rebar_config} for '${pn}'"
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}
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# @FUNCTION: rebar_remove_deps
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# @USAGE: [<rebar_config>]
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# @DESCRIPTION:
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# Remove dependencies list from rebar.config and deceive build rules that any
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# dependencies are already fetched and built. Otherwise rebar tries to fetch
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# dependencies and compile them.
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#
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# <rebar_config> is optional. Default is 'rebar.config'.
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#
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# The function dies on failure.
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rebar_remove_deps() {
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debug-print-function ${FUNCNAME} "${@}"
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local rebar_config="${1:-rebar.config}"
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mkdir -p "${S}/deps" && :>"${S}/deps/.got" && :>"${S}/deps/.built" || die
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gawk -i inplace '
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/^{[[:space:]]*deps[[:space:]]*,/, /}[[:space:]]*\.$/ {
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if ($0 ~ /}[[:space:]]*\.$/) {
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print "{deps, []}.";
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}
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next;
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}
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1
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' "${rebar_config}" || die "failed to remove deps from ${rebar_config}"
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}
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# @FUNCTION: rebar_set_vsn
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# @USAGE: [<version>]
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# @DESCRIPTION:
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# Set version in project description file if it's not set.
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#
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# <version> is optional. Default is PV stripped from version suffix.
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#
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# The function dies on failure.
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rebar_set_vsn() {
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debug-print-function ${FUNCNAME} "${@}"
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local version="${1:-${PV%_*}}"
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sed -e "s/vsn, git/vsn, \"${version}\"/" \
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-i "${S}/${REBAR_APP_SRC}" \
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|| die "failed to set version in src/${PN}.app.src"
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}
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# @FUNCTION: rebar_src_prepare
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# @DESCRIPTION:
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# Prevent rebar from fetching and compiling dependencies. Set version in
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# project description file if it's not set.
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#
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# Existence of rebar.config is optional, but file description file must exist
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# at 'src/${PN}.app.src'.
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rebar_src_prepare() {
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debug-print-function ${FUNCNAME} "${@}"
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default
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rebar_set_vsn
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if [[ -f rebar.config ]]; then
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rebar_disable_coverage
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rebar_remove_deps
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fi
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}
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# @FUNCTION: rebar_src_configure
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# @DESCRIPTION:
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# Configure with ERL_LIBS set.
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rebar_src_configure() {
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debug-print-function ${FUNCNAME} "${@}"
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local -x ERL_LIBS="${EPREFIX}$(get_erl_libs)"
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default
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}
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# @FUNCTION: rebar_src_compile
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# @DESCRIPTION:
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# Compile project with rebar.
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rebar_src_compile() {
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debug-print-function ${FUNCNAME} "${@}"
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erebar compile
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}
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# @FUNCTION: rebar_src_test
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# @DESCRIPTION:
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# Run unit tests.
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rebar_src_test() {
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debug-print-function ${FUNCNAME} "${@}"
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erebar eunit
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}
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# @FUNCTION: rebar_src_install
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# @DESCRIPTION:
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# Install BEAM files, include headers, executables and native libraries.
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# Install standard docs like README or defined in DOCS variable.
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#
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# Function expects that project conforms to Erlang/OTP structure.
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rebar_src_install() {
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debug-print-function ${FUNCNAME} "${@}"
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local bin
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local dest="$(get_erl_libs)/${P}"
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insinto "${dest}"
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doins -r ebin
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[[ -d include ]] && doins -r include
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[[ -d bin ]] && for bin in bin/*; do dobin "$bin"; done
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if [[ -d priv ]]; then
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cp -pR priv "${ED}${dest}/" || die "failed to install priv/"
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fi
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einstalldocs
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}
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