Import eclasses that are copied verbatim from upstream Gentoo to chromiumos-overlay.

eclass/base.eclass

+# Copyright 1999-2008 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/eclass/base.eclass,v 1.53 2010/05/27 08:09:33 scarabeus Exp $
+
+# @ECLASS: base.eclass
+# @MAINTAINER:
+# QA Team <qa@gentoo.org>
+#
+# Original author Dan Armak <danarmak@gentoo.org>
+# @BLURB: The base eclass defines some default functions and variables.
+# @DESCRIPTION:
+# The base eclass defines some default functions and variables. Nearly
+# everything else inherits from here.
+
+inherit eutils
+
+BASE_EXPF="src_unpack src_compile src_install"
+case "${EAPI:-0}" in
+        2|3|4) BASE_EXPF+=" src_prepare src_configure" ;;
+        *) ;;
+esac
+
+EXPORT_FUNCTIONS ${BASE_EXPF}
+
+# @ECLASS-VARIABLE: DOCS
+# @DESCRIPTION:
+# Array containing documents passed to dodoc command.
+#
+# DOCS=( "${S}/doc/document.txt" "${S}/doc/doc_folder/" )
+
+# @ECLASS-VARIABLE: HTML_DOCS
+# @DESCRIPTION:
+# Array containing documents passed to dohtml command.
+#
+# HTML_DOCS=( "${S}/doc/document.html" "${S}/doc/html_folder/" )
+
+# @ECLASS-VARIABLE: PATCHES
+# @DESCRIPTION:
+# PATCHES array variable containing all various patches to be applied.
+# This variable is expected to be defined in global scope of ebuild.
+# Make sure to specify the full path. This variable is utilised in
+# src_unpack/src_prepare phase based on EAPI.
+#
+# NOTE: if using patches folders with special file suffixes you have to
+# define one additional variable EPATCH_SUFFIX="something"
+#
+# PATCHES=( "${FILESDIR}/mypatch.patch" "${FILESDIR}/patches_folder/" )
+
+
+# @FUNCTION: base_src_unpack
+# @DESCRIPTION:
+# The base src_unpack function, which is exported.
+# Calls also src_prepare with eapi older than 2.
+base_src_unpack() {
+        debug-print-function $FUNCNAME "$@"
+
+        pushd "${WORKDIR}" > /dev/null
+
+        [[ -n "${A}" ]] && unpack ${A}
+        has src_prepare ${BASE_EXPF} || base_src_prepare
+
+        popd > /dev/null
+}
+
+# @FUNCTION: base_src_prepare
+# @DESCRIPTION:
+# The base src_prepare function, which is exported
+# EAPI is greater or equal to 2. Here the PATCHES array is evaluated.
+base_src_prepare() {
+        debug-print-function $FUNCNAME "$@"
+        debug-print "$FUNCNAME: PATCHES=$PATCHES"
+
+        local patches_failed=0
+
+        pushd "${S}" > /dev/null
+        if [[ "$(declare -p PATCHES 2>/dev/null 2>&1)" == "declare -a"* ]]; then
+                for x in "${PATCHES[@]}"; do
+                        debug-print "$FUNCNAME: applying patch from ${x}"
+                        if [[ -d "${x}" ]]; then
+                                # Use standardized names and locations with bulk patching
+                                # Patch directory is ${WORKDIR}/patch
+                                # See epatch() in eutils.eclass for more documentation
+                                EPATCH_SUFFIX=${EPATCH_SUFFIX:=patch}
+
+                                # in order to preserve normal EPATCH_SOURCE value that can
+                                # be used other way than with base eclass store in local
+                                # variable and restore later
+                                oldval=${EPATCH_SOURCE}
+                                EPATCH_SOURCE=${x}
+                                EPATCH_FORCE=yes
+                                epatch
+                                EPATCH_SOURCE=${oldval}
+                        elif [[ -f "${x}" ]]; then
+                                epatch "${x}"
+                        else
+                                ewarn "QA: File or directory \"${x}\" does not exist."
+                                ewarn "QA: Check your PATCHES array or add missing file/directory."
+                                patches_failed=1
+                        fi
+                done
+                [[ ${patches_failed} -eq 1 ]] && die "Some patches failed. See above messages."
+        else
+                for x in ${PATCHES}; do
+                        debug-print "$FUNCNAME: patching from ${x}"
+                        epatch "${x}"
+                done
+        fi
+
+        # Apply user patches
+        debug-print "$FUNCNAME: applying user patches"
+        epatch_user
+
+        popd > /dev/null
+}
+
+# @FUNCTION: base_src_configure
+# @DESCRIPTION:
+# The base src_configure function, which is exported when
+# EAPI is greater or equal to 2. Runs basic econf.
+base_src_configure() {
+        debug-print-function $FUNCNAME "$@"
+
+        # there is no pushd ${S} so we can override its place where to run
+        [[ -x ${ECONF_SOURCE:-.}/configure ]] && econf "$@"
+}
+
+# @FUNCTION: base_src_compile
+# @DESCRIPTION:
+# The base src_compile function, calls src_configure with
+# EAPI older than 2.
+base_src_compile() {
+        debug-print-function $FUNCNAME "$@"
+
+        has src_configure ${BASE_EXPF} || base_src_configure
+        base_src_make "$@"
+}
+
+# @FUNCTION: base_src_make
+# @DESCRIPTION:
+# Actual function that runs emake command.
+base_src_make() {
+        debug-print-function $FUNCNAME "$@"
+
+        if [[ -f Makefile || -f GNUmakefile || -f makefile ]]; then
+                emake "$@" || die "died running emake, $FUNCNAME"
+        fi
+}
+
+# @FUNCTION: base_src_install
+# @DESCRIPTION:
+# The base src_install function. Runs make install and
+# installs documents and html documents from DOCS and HTML_DOCS
+# arrays.
+base_src_install() {
+        debug-print-function $FUNCNAME "$@"
+
+        emake DESTDIR="${D}" "$@" install || die "died running make install, $FUNCNAME"
+        base_src_install_docs
+}
+
+# @FUNCTION: base_src_install_docs
+# @DESCRIPTION:
+# Actual function that install documentation from
+# DOCS and HTML_DOCS arrays.
+base_src_install_docs() {
+        debug-print-function $FUNCNAME "$@"
+
+        local x
+
+        pushd "${S}" > /dev/null
+
+        if [[ "$(declare -p DOCS 2>/dev/null 2>&1)" == "declare -a"* ]]; then
+                for x in "${DOCS[@]}"; do
+                        debug-print "$FUNCNAME: docs: creating document from ${x}"
+                        dodoc "${x}" || die "dodoc failed"
+                done
+        fi
+        if [[ "$(declare -p HTML_DOCS 2>/dev/null 2>&1)" == "declare -a"* ]]; then
+                for x in "${HTML_DOCS[@]}"; do
+                        debug-print "$FUNCNAME: docs: creating html document from ${x}"
+                        dohtml -r "${x}" || die "dohtml failed"
+                done
+        fi
+
+        popd > /dev/null
+}