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Overlay/eclass/golang-common.eclass

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# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
# @ECLASS: golang-utils.eclass
# @MAINTAINER:
# Mauro Toffanin <toffanin.mauro@gmail.com>
# @AUTHOR:
# Mauro Toffanin <toffanin.mauro@gmail.com>
# @BLURB: Base eclass for GoLang packages
# @SUPPORTED_EAPIS: 7
# @DESCRIPTION:
# This eclass provides functionalities which are used by golang-single.eclass,
# golang-live.eclass, and as well as from ebuilds.
#
# This eclass should not be inherited directly from an ebuild.
# Instead, you should inherit golang-single or golang-live for GoLang packages.
inherit eutils multiprocessing
if [[ -z ${_GOLANG_BASE_ECLASS} ]]; then
_GOLANG_BASE_ECLASS=1
# Silences repoman warnings.
case "${EAPI:-0}" in
7)
case "${GOLANG_PKG_DEPEND_ON_GO_SUBSLOT:-yes}" in
yes)
GO_DEPEND="dev-lang/go:0="
;;
*)
GO_DEPEND="dev-lang/go:*"
;;
esac
;;
*)
die "${ECLASS}: EAPI=${EAPI:-0} is not supported" ;;
esac
DEPEND+=" ${GO_DEPEND}"
RESTRICT+=" mirror strip"
QA_FLAGS_IGNORED="usr/bin/.*
usr/sbin/.*"
# @ECLASS-VARIABLE: GOLANG_PKG_NAME
# @DESCRIPTION:
# Sets the GoLang name for the generated package.
# GOLANG_PKG_NAME="${PN}"
GOLANG_PKG_NAME="${GOLANG_PKG_NAME:-${PN}}"
# @ECLASS-VARIABLE: GOLANG_PKG_VERSION
# @DESCRIPTION:
# Sets the GoLang version for the generated package.
# GOLANG_PKG_VERSION="${PV}"
GOLANG_PKG_VERSION="${GOLANG_PKG_VERSION:-${PV/_pre/.pre}}"
# @ECLASS-VARIABLE: GOLANG_PKG_IMPORTPATH
# @DESCRIPTION:
# Sets the remote import path for the generated package.
# GOLANG_PKG_IMPORTPATH="github.com/captObvious/"
GOLANG_PKG_IMPORTPATH="${GOLANG_PKG_IMPORTPATH:-}"
# @ECLASS-VARIABLE: GOLANG_PKG_IMPORTPATH_ALIAS
# @DESCRIPTION:
# Sets an alias of the remote import path for the generated package.
# GOLANG_PKG_IMPORTPATH_ALIAS="privaterepo.com/captObvious/"
GOLANG_PKG_IMPORTPATH_ALIAS="${GOLANG_PKG_IMPORTPATH_ALIAS:=${GOLANG_PKG_IMPORTPATH}}"
# @ECLASS-VARIABLE: GOLANG_PKG_ARCHIVEPREFIX
# @DESCRIPTION:
# Sets the archive prefix for the file URI of the package.
# Most projects hosted on GitHub's mirrors provide archives with prefix as
# 'v' or 'source-', other hosted services offer different archive formats.
# This eclass defaults to an empty prefix.
GOLANG_PKG_ARCHIVEPREFIX="${GOLANG_PKG_ARCHIVEPREFIX:-}"
# @ECLASS-VARIABLE: GOLANG_PKG_ARCHIVESUFFIX
# @DESCRIPTION:
# Sets the archive suffix for the file URI of the package.
# Most projects hosted on GitHub's mirrors provide archives with suffix as
# '.tar.gz' or '.zip', other hosted services offer different archive formats.
# This eclass defaults to '.tar.gz'.
GOLANG_PKG_ARCHIVESUFFIX="${GOLANG_PKG_ARCHIVESUFFIX:=".tar.gz"}"
# @ECLASS-VARIABLE: GOLANG_PKG_OUTPUT_NAME
# @DESCRIPTION:
# Specifies the output file name of the package.
# If not set, it derives from the name of the package, such as $GOLANG_PKG_NAME.
# This eclass defaults to $PN.
GOLANG_PKG_OUTPUT_NAME="${GOLANG_PKG_OUTPUT_NAME:=${PN}}"
# @ECLASS-VARIABLE: GOLANG_PKG_BUILDPATH
# @DESCRIPTION:
# Specifies a go source file to be compiled as a single main package.
# This eclass defaults to an empty value.
# This eclass defaults to "/..." when the user declares GOLANG_PKG_IS_MULTIPLE=1
GOLANG_PKG_BUILDPATH="${GOLANG_PKG_BUILDPATH:-}"
# @ECLASS-VARIABLE: GOLANG_PKG_INSTALLPATH
# @DESCRIPTION:
# Sets the root path into which a binary, or a list of binaries, will be
# installed (e.x.: ${GOLANG_PKG_INSTALLPATH}/bin).
# This eclass defaults to "/usr"
GOLANG_PKG_INSTALLPATH="${GOLANG_PKG_INSTALLPATH:="/usr"}"
# @ECLASS-VARIABLE: GOLANG_PKG_INSTALLSUFFIX
# @DESCRIPTION:
# Sets a suffix to use in the name of the package installation directory.
# This eclass defaults to an empty install suffix.
GOLANG_PKG_INSTALLSUFFIX="${GOLANG_PKG_INSTALLSUFFIX:-}"
# @ECLASS-VARIABLE: GOLANG_PKG_IS_MULTIPLE
# @DESCRIPTION:
# Set to enable the building of multiple packages from a single import path.
# @ECLASS-VARIABLE: GOLANG_PKG_HAVE_TEST
# @DEFAULT_UNSET
# @DESCRIPTION:
# Set to enable the execution of automated testing.
# @ECLASS-VARIABLE: GOLANG_PKG_HAVE_TEST_RACE
# @DEFAULT_UNSET
# @DESCRIPTION:
# Set to enable the execution of automated testing with support for
# data race detection.
# @ECLASS-VARIABLE: GOLANG_PKG_USE_CGO
# @DEFAULT_UNSET
# @DESCRIPTION:
# Set to enable the compilation of the package with CGO.
# @ECLASS-VARIABLE: GOLANG_PKG_USE_GENERATE
# @DEFAULT_UNSET
# @DESCRIPTION:
# Set to run commands described by directives within existing golang files.
# @ECLASS-VARIABLE: GOLANG_PKG_DEPEND_ON_GO_SUBSLOT
# @DESCRIPTION:
# Set to ensure the package does depend on the dev-lang/go subslot value.
# Possible values: {yes,no}
# This eclass defaults to "no"
GOLANG_PKG_DEPEND_ON_GO_SUBSLOT=${GOLANG_PKG_DEPEND_ON_GO_SUBSLOT:="no"}
# @ECLASS-VARIABLE: GOLANG_PKG_LDFLAGS
# @DESCRIPTION:
# Sets the linker arguments to pass to 5l, 6l, or 8l.
# This eclass defaults to an empty list.
GOLANG_PKG_LDFLAGS="${GOLANG_PKG_LDFLAGS:-}"
# @ECLASS-VARIABLE: GOLANG_PKG_TAGS
# @DESCRIPTION:
# Sets the list of build tags during the build.
# This eclass defaults to an empty list.
GOLANG_PKG_TAGS="${GOLANG_PKG_TAGS:-}"
# @ECLASS-VARIABLE: GOLANG_PKG_VENDOR
# @DESCRIPTION:
# Sets additional standard Go workspaces to be appended to the environment
# variable GOPATH, as described in http://golang.org/doc/code.html.
# This eclass defaults to an empty list.
GOLANG_PKG_VENDOR=()
# @ECLASS-VARIABLE: GOLANG_PKG_STATIK
# @DESCRIPTION:
# Sets the arguments to pass to dev-go/statik.
# This eclass defaults to an empty list.
GOLANG_PKG_STATIK="${GOLANG_PKG_STATIK:-}"
# @ECLASS-VARIABLE: GOLANG_PKG_USE_MODULES
# @DESCRIPTION:
# Set to enable the compilation of the package with Go modules support.
# @ECLASS-VARIABLE: GO
# @DEFAULT_UNSET
# @DESCRIPTION:
# The absolute path to the current GoLang interpreter.
#
# This variable is set automatically after calling golang_setup().
#
# Default value:
# @CODE
# /usr/bin/go
# @CODE
# @ECLASS-VARIABLE: EGO
# @DEFAULT_UNSET
# @DESCRIPTION:
# The executable name of the current GoLang interpreter.
#
# This variable is set automatically after calling golang_setup().
#
# Default value:
# @CODE
# go
# @CODE
# @ECLASS-VARIABLE: PATCHES
# @DEFAULT_UNSET
# @DESCRIPTION:
# Array variable containing all the patches to be applied. This variable
# is expected to be defined in the global scope of ebuilds. Make sure to
# specify the full path. This variable is used in src_prepare phase.
#
# Example:
# @CODE
# PATCHES=(
# "${FILESDIR}/mypatch.patch"
# "${FILESDIR}/mypatch2.patch"
# )
# @CODE
# Adds gccgo as a compile-time dependency when GOLANG_PKG_USE_CGO is set.
#[[ -n ${GOLANG_PKG_USE_CGO} ]] && DEPEND+=" >=sys-devel/gcc-4.8.4[go]"
# Adds dev-go/statik as a compile-time dependency when GOLANG_PKG_STATIK is set.
[[ -n ${GOLANG_PKG_STATIK} ]] && DEPEND+=" dev-go/statik"
# Validates GOLANG_PKG_IMPORTPATH.
if [[ -z ${GOLANG_PKG_IMPORTPATH} ]]; then
eerror "The remote import path for this package has not been declared"
die "Mandatory variable GOLANG_PKG_IMPORTPATH is unset"
fi
# Forces a multiple package build when user specifies GOLANG_PKG_IS_MULTIPLE=1.
if [[ -n ${GOLANG_PKG_IS_MULTIPLE} && -z ${GOLANG_PKG_BUILDPATH} ]]; then
GOLANG_PKG_BUILDPATH="/..."
fi
# Validates use of GOLANG_PKG_BUILDPATH combined with GOLANG_PKG_IS_MULTIPLE
# FIX: makes sure user isn't overriding GOLANG_PKG_BUILDPATH with inane values.
if [[ -n ${GOLANG_PKG_IS_MULTIPLE} && ${GOLANG_PKG_BUILDPATH##*/} != "..." ]]; then
ewarn "Ebuild ${CATEGORY}/${PF} specifies GOLANG_PKG_IS_MULTIPLE=1,"
ewarn "but then GOLANG_PKG_BUILDPATH is overridden with \"${GOLANG_PKG_BUILDPATH}\"."
ewarn "Please, fix it by appending \"/...\" to your GOLANG_PKG_BUILDPATH."
ewarn "If in doubt, remove GOLANG_PKG_BUILDPATH entirely."
fi
# Even though xz-utils are in @system, they must still be added to DEPEND; see
# http://archives.gentoo.org/gentoo-dev/msg_a0d4833eb314d1be5d5802a3b710e0a4.xml
if [[ ${GOLANG_PKG_ARCHIVESUFFIX/.*} == "xz" ]]; then
DEPEND+=" app-arch/xz-utils"
fi
# Defines common USE flags
IUSE="${IUSE} debug pie"
# Enables USE 'test' when required by GOLANG_PKG_HAVE_TEST.
if [[ -n ${GOLANG_PKG_HAVE_TEST} ]]; then
IUSE+=" test"
fi
# Defines HOMEPAGE.
[ -z "$HOMEPAGE" ] && HOMEPAGE="https://${GOLANG_PKG_IMPORTPATH}/${PN}"
# Defines SOURCE directory.
S="${WORKDIR}/gopath/src/${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}"
# @FUNCTION: _factorize_dependency_entities
# @INTERNAL
# @DESCRIPTION:
# Factorizes the dependency declaration in specific tokens such as the import
# path, the import path alias, the host name, the author name, the project name,
# and the revision tag.
_factorize_dependency_entities() {
debug-print-function ${FUNCNAME} "${@}"
local -A dependency=()
local key_list=(importpathalias importpath host project_name author_name revision)
# Strips all the white spaces from the supplied argument.
local raw_dependency="${1//\ /}"
# Determines the alias of the import path (if present).
dependency[importpathalias]="${raw_dependency##*->}"
# Strips the import path alias from the supplied argument.
raw_dependency="${raw_dependency%%->*}"
# Determines the import path.
dependency[importpath]="${raw_dependency%:*}"
# When the importpath alias is not specified, then this eclass sets the
# alias as equal to the import path minus the project name.
if [[ "${raw_dependency}" == "${dependency[importpathalias]}" ]]; then
dependency[importpathalias]="${dependency[importpath]%/*}"
fi
# Determines the host.
dependency[host]="${dependency[importpath]%%/*}"
# Determines the project name.
dependency[project_name]="${dependency[importpath]##*/}"
# Determines the author name.
dependency[author_name]="${dependency[importpath]#*/}"
dependency[author_name]="${dependency[author_name]%/*}"
# Determines the revision.
dependency[revision]="${raw_dependency#*:}"
# Exports all the dependency tokens as an associated list.
for key in ${key_list[@]}; do
echo "${key} ${dependency[${key}]}"
done
}
# @FUNCTION: golang_setup
# @DESCRIPTION:
# Determines where is the GoLang implementation and then set-up the
# GoLang build environment.
golang_setup() {
debug-print-function ${FUNCNAME} "${@}"
# NOTE: Keep /usr/bin/go as index [0] and never overwrite it,
# always append other binary paths after the index [0]
local GOLANG_BINS=(
/usr/bin/go
/usr/bin/gofmt
)
[[ -n ${GOLANG_PKG_STATIK} ]] && GOLANG_BINS+=(/usr/bin/statik)
# Reset GoLang environment variables
unset EGO
unset EGOFMT
unset ESTATIK
unset GO
unset GOPATH
unset GOBIN
# Determine is the GoLang interpreter is working
local IS_EXECUTABLE=1
for binary in "${GOLANG_BINS[@]}"; do
debug-print "${FUNCNAME}: Checking ... ${binary}"
[[ -x "${EPREFIX}/${binary}" ]] && continue
IS_EXECUTABLE=0
ewarn "It seems that the binary '${binary}' is not executable."
done
# dev-lang/go isn't installed or one of its binaries aren't executable.
# Either way, the Gentoo box is screwed; no need to set up the GoLang environment
[[ ${IS_EXECUTABLE} == 0 ]] && exit
# dev-lang/go is available and working.
# Exports GO/EGO/EGOFMT global variables.
export GO="${GOLANG_BINS[0]}"
export EGO="${GOLANG_BINS[0]##*/}"
export EGOFMT="${GOLANG_BINS[1]}"
# dev-go/statik is available and working.
# Exports ESTATIK global variable.
[[ -n ${GOLANG_PKG_STATIK} ]] && export ESTATIK="${GOLANG_BINS[2]##*/}"
debug-print "${FUNCNAME}: GO = ${GO}"
debug-print "${FUNCNAME}: EGO = ${EGO}"
debug-print "${FUNCNAME}: EGOFMT = ${EGOFMT}"
debug-print "${FUNCNAME}: ESTATIK = ${ESTATIK}"
# Determines go interpreter version.
GOLANG_VERSION="$( ${GO} version )"
GOLANG_VERSION="${GOLANG_VERSION/go\ version\ go}"
export GOLANG_VERSION="${GOLANG_VERSION%\ *}"
einfo "Found GoLang version: ${GOLANG_VERSION}"
# Determines statik interpreter version.
# TODO: add version detection when statik will provide a -version option.
if [[ -n ${GOLANG_PKG_STATIK} ]]; then
local STATIK_VERSION=""
einfo "Found statik version: ${STATIK_VERSION}"
fi
# Enable/Disable frame pointers
local GOEXPERIMENT="noframepointer"
use debug && GOEXPERIMENT="framepointer"
# Sets the build environment inside Portage's WORKDIR.
ebegin "Setting up GoLang build environment"
# Prepares CGO_ENABLED.
CGO_ENABLED=0
[[ -z ${GOLANG_PKG_USE_CGO} ]] || CGO_ENABLED=1
use pie && CGO_ENABLED=1 # PIE requires CGO
# Prepares gopath / gobin directories inside WORKDIR.
local _GOPATH="${WORKDIR}/gopath"
local _GOBIN="${WORKDIR}/gobin"
mkdir -p "${_GOBIN}" || die
mkdir -p "${_GOPATH}"/src || die
# Exports special env variable EGO_SRC.
export EGO_SRC="${_GOPATH}/src"
# Exports GoLang env variables.
export GOPATH="$_GOPATH"
export GOBIN="$_GOBIN"
export CGO_ENABLED
#export GOEXPERIMENT
#export GO15VENDOREXPERIMENT=0
GO111MODULE="off"
[[ -z ${GOLANG_PKG_USE_MODULES} ]] || GO111MODULE="on"
export GO111MODULE
debug-print "${FUNCNAME}: GOPATH = ${GOPATH}"
debug-print "${FUNCNAME}: GOBIN = ${GOBIN}"
debug-print "${FUNCNAME}: EGO_SRC = ${EGO_SRC}"
debug-print "${FUNCNAME}: CGO_ENABLED = ${CGO_ENABLED}"
eend
}
# @FUNCTION: golang-common_src_prepare
# @DESCRIPTION:
# Prepare source code.
golang-common_src_prepare() {
debug-print-function ${FUNCNAME} "${@}"
pushd "${WORKDIR}" > /dev/null || die
einfo "Preparing GoLang build environment in ${GOPATH}/src"
# If the ebuild declares an importpath alias, then its path was
# already created during the src_unpack phase. That means the eclass
# needs to create the missing original import path (GOLANG_PKG_IMPORTPATH)
# as a simbolic link pointing to the alias.
if [[ "${GOLANG_PKG_IMPORTPATH}" != "${GOLANG_PKG_IMPORTPATH_ALIAS}" ]]; then
# If the ebuild declares a GOLANG_PKG_NAME different from PN, then
# the latter will be used as the simbolic link target.
local TARGET="${GOLANG_PKG_NAME}"
[[ "${PN}" != "${GOLANG_PKG_NAME}" ]] && TARGET="${PN}"
golang_fix_importpath_alias \
"${GOLANG_PKG_IMPORTPATH_ALIAS}/${TARGET}" \
"${GOLANG_PKG_IMPORTPATH}/${GOLANG_PKG_NAME}"
fi
# If the ebuild declares some GoLang dependencies, then they need to be
# correctly installed into the sand-boxed GoLang build environment which
# was set up automatically during src_unpack) phase.
if [[ ${#GOLANG_PKG_DEPENDENCIES[@]} -gt 0 ]]; then
for i in ${!GOLANG_PKG_DEPENDENCIES[@]} ; do
# Collects all the tokens of the dependency.
local -A DEPENDENCY=()
while read -r -d $'\n' key value; do
[[ -z ${key} ]] && continue
DEPENDENCY[$key]="${value}"
done <<-EOF
$( _factorize_dependency_entities "${GOLANG_PKG_DEPENDENCIES[$i]}" )
EOF
# Debug
debug-print "${FUNCNAME}: DEPENDENCY = ${GOLANG_PKG_DEPENDENCIES[$i]}"
debug-print "${FUNCNAME}: importpath = ${DEPENDENCY[importpath]}"
debug-print "${FUNCNAME}: importpathalias = ${DEPENDENCY[importpathalias]}"
debug-print "${FUNCNAME}: host = ${DEPENDENCY[host]}"
debug-print "${FUNCNAME}: author = ${DEPENDENCY[author_name]}"
debug-print "${FUNCNAME}: project = ${DEPENDENCY[project_name]}"
debug-print "${FUNCNAME}: revision = ${DEPENDENCY[revision]}"
local message="Importing ${DEPENDENCY[importpath]}"
local destdir
# Prepares GOPATH structure.
case ${DEPENDENCY[importpathalias]} in
gopkg.in*)
message+=" as ${DEPENDENCY[importpathalias]}"
destdir="${DEPENDENCY[importpathalias]}"
# Creates the import path in GOPATH.
mkdir -p "${GOPATH}/src/${DEPENDENCY[importpathalias]%/*}" || die
#einfo "\n${GOPATH}/src/${DEPENDENCY[importpathalias]%/*}"
;;
*)
[[ "${DEPENDENCY[importpath]}" != "${DEPENDENCY[importpathalias]}/${DEPENDENCY[project_name]}" ]] && message+=" as ${DEPENDENCY[importpathalias]}/${DEPENDENCY[project_name]}"
destdir="${DEPENDENCY[importpathalias]}/${DEPENDENCY[project_name]}"
# Creates the import path in GOPATH.
mkdir -p "${GOPATH}/src/${DEPENDENCY[importpathalias]}" || die
#einfo "\n${GOPATH}/src/${DEPENDENCY[importpathalias]}"
;;
esac
# Moves sources from WORKDIR into GOPATH.
case ${DEPENDENCY[host]} in
github*)
ebegin "${message}"
mv ${DEPENDENCY[project_name]}-${DEPENDENCY[revision]}* "${GOPATH}"/src/${destdir} || die
eend
# FIX: sometimes the source code inside an importpath alias
# (such as gopkg.in/mylib.v1) invokes imports from
# the original import path instead of using the alias,
# thus we need a symbolic link between the alias and
# the original import path to avoid compilation issues.
# Example: gopkg.in/Shopify/sarama.v1 erroneously
# invokes imports from github.com/shopify/sarama
if [[ ${destdir} != ${DEPENDENCY[importpath]} ]]; then
golang_fix_importpath_alias ${destdir} ${DEPENDENCY[importpath]}
fi
;;
bitbucket*)
#einfo "path: ${DEPENDENCY[author_name]}-${DEPENDENCY[project_name]}-${DEPENDENCY[revision]}"
ebegin "${message}"
mv ${DEPENDENCY[author_name]}-${DEPENDENCY[project_name]}-${DEPENDENCY[revision]}* "${GOPATH}"/src/${destdir} || die
eend
;;
code.google*)
ebegin "${message}"
mv ${DEPENDENCY[project_name]}-${DEPENDENCY[revision]}* "${GOPATH}"/src/${destdir} || die
eend
;;
*) die "Function 'golang-common_src_prepare' doesn't support '${DEPENDENCY[importpath]}'" ;;
esac
done
fi
popd > /dev/null || die
# Auto-detects the presence of Go's vendored
# dependencies inside $S/vendor.
local VENDOR="${S}/vendor"
if [[ -d "${VENDOR}" ]]; then
golang_add_vendor "${VENDOR}"
export GO15VENDOREXPERIMENT=1
fi
# Auto-detects the presence of Go's vendored
# dependencies inside $S/*/vendor
if [[ -n ${GOLANG_PKG_BUILDPATH} && ${GOLANG_PKG_BUILDPATH##*/} != "..." ]]; then
while read -r -d $' ' path; do
# Trims leading slash (if any).
path="${path/\//}"
# Extracts the root path.
path="${path%%/*}"
# Ignores $path when it's empty or a string of white spaces.
[[ -n $path ]] || continue
local vendor="${S}/${path}/vendor"
if [[ -d "${vendor}" ]]; then
golang_add_vendor "${vendor}"
fi
done <<< "$( echo ${GOLANG_PKG_BUILDPATH}) "
fi
# Auto-detects the presence of Godep's workspace
# (see github.com/tools/godep for more infos).
VENDOR="${S}/Godeps/_workspace"
if [[ -d "${VENDOR}" ]]; then
golang_add_vendor "${VENDOR}"
fi
# Evaluates PATCHES array.
default_src_prepare
}
# @FUNCTION: golang-common_src_configure
# @DESCRIPTION:
# Configure the package.
golang-common_src_configure() {
debug-print-function ${FUNCNAME} "${@}"
[[ ${EGO} ]] || die "No GoLang implementation set (golang_setup not called?)."
# Defines the level of verbosity.
local EGO_VERBOSE="-v"
[[ -z ${PORTAGE_VERBOSE} ]] || EGO_VERBOSE+=" -x"
# GoLang doesn't have a configure phase,
# so instead this eclass prints the output of 'go env'.
local -a GOLANG_ENV=()
while read -r line; do
GOLANG_ENV+=("${line}")
done <<-EOF
$( ${GO} env )
EOF
# Prints an error when 'go env' output is missing.
if [[ ${#GOLANG_ENV[@]} -eq 1 ]]; then
eerror "Your GoLang environment should be more verbose"
fi
# Prints GoLang environment summary.
einfo " ${EGO} env"
for env in "${GOLANG_ENV[@]}"; do
einfo " - ${env}"
done
# Removes GoLang object files from package source directories (pkg/)
# and temporary directories (_obj/ _test*/).
local EGO_SUBPACKAGES="${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}"
case $( ver_cut 1-2 ${GOLANG_VERSION} ) in
1.4*) ;;
*)
EGO_SUBPACKAGES+="/..."
;;
esac
# einfo "${EGO} clean -i ${EGO_VERBOSE} ${EGO_SUBPACKAGES}"
# ${EGO} clean -i \
# ${EGO_VERBOSE} \
# "${EGO_SUBPACKAGES}" \
# || die
# Removes GoLang objects files from all the dependencies too.
# if [[ ${#GOLANG_PKG_DEPENDENCIES[@]} -gt 0 ]]; then
#
# for i in ${!GOLANG_PKG_DEPENDENCIES[@]} ; do
#
# # Collects all the tokens of the dependency.
# local -A DEPENDENCY=()
# while read -r -d $'\n' key value; do
# [[ -z ${key} ]] && continue
# DEPENDENCY[$key]="${value}"
# done <<-EOF
# $( _factorize_dependency_entities "${GOLANG_PKG_DEPENDENCIES[$i]}" )
# EOF
#
# [[ ! -d ${DEPENDENCY[importpath]} ]] && continue
#
# # Debug
# debug-print "${FUNCNAME}: DEPENDENCY = ${GOLANG_PKG_DEPENDENCIES[$i]}"
# debug-print "${FUNCNAME}: importpath = ${DEPENDENCY[importpath]}"
#
# # Cleans object files of the dependency.
# einfo "${EGO} clean -i ${EGO_VERBOSE} ${DEPENDENCY[importpath]}"
# ${EGO} clean \
# -i ${EGO_VERBOSE} \
# "${DEPENDENCY[importpath]}" \
# || die
# done
# fi
# Before to compile Godep's dependencies it's wise to wipe out
# all pre-built object files from Godep's package source directories.
if [[ -d "${S}"/Godeps/_workspace/pkg ]]; then
ebegin "Cleaning up pre-built object files in Godep workspace"
rm -r "${S}"/Godeps/_workspace/pkg || die
eend
fi
if [[ -d "${S}"/Godeps/_workspace/bin ]]; then
ebegin "Cleaning up executables in Godep workspace"
rm -r "${S}"/Godeps/_workspace/bin || die
eend
fi
# Executes 'go generate'.
# NOTE: generate should never run automatically. It must be run explicitly.
if [[ -n ${GOLANG_PKG_USE_GENERATE} ]]; then
pushd "${GOPATH}/src/${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}" > /dev/null || die
einfo "${EGO} generate ${EGO_VERBOSE} ${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}/..."
${EGO} generate \
${EGO_VERBOSE} \
./... \
|| die
popd > /dev/null || die
fi
# Executes 'statik' when explicitly asked.
if [[ -n ${GOLANG_PKG_STATIK} ]]; then
ebegin "${ESTATIK} $GOLANG_PKG_STATIK"
${ESTATIK} $GOLANG_PKG_STATIK || die
eend
fi
}
# @FUNCTION: golang-common_src_compile
# @DESCRIPTION:
# Compiles the package.
golang-common_src_compile() {
debug-print-function ${FUNCNAME} "${@}"
[[ ${EGO} ]] || die "No GoLang implementation set (golang_setup not called?)."
# Populates env variable GOPATH with vendored workspaces (if present).
if [[ -n ${GOLANG_PKG_VENDOR} ]]; then
einfo "Using vendored dependencies from:"
for path in "${GOLANG_PKG_VENDOR[@]}"; do
[ -d ${path} ] || continue
if [[ ${path//${S}\//} == "vendor" ]]; then
einfo "- vendor/ (native vendoring support)"
continue
fi
debug-print "$FUNCNAME: GOPATH: Adding vendor path ${path}"
ebegin "- ${path//${S}\//}"
GOPATH="${GOPATH}:$( echo ${path} )"
eend
done
export GOPATH
fi
# Enables position-independent executables (PIE)
local EGO_PIE
use pie && EGO_PIE="-buildmode=pie"
# Defines the install suffix.
local EGO_INSTALLSUFFIX
[[ -z ${GOLANG_PKG_INSTALLSUFFIX} ]] || EGO_INSTALLSUFFIX="-installsuffix=${GOLANG_PKG_INSTALLSUFFIX}"
# Defines the level of verbosity.
local EGO_VERBOSE="-v"
[[ -z ${PORTAGE_VERBOSE} ]] || EGO_VERBOSE+=" -x"
# Defines the number of builds that can be run in parallel.
local EGO_PARALLEL="-p $(makeopts_jobs)"
# Defines extra options.
local EGO_EXTRA_OPTIONS="-a"
# Prepares build flags for the go toolchain.
local EGO_BUILD_FLAGS="$( echo ${EGO_VERBOSE} ) $( echo ${EGO_PARALLEL} ) $( echo ${EGO_EXTRA_OPTIONS} ) $( echo ${EGO_PIE} )"
[[ -n ${EGO_INSTALLSUFFIX} ]] && EGO_BUILD_FLAGS+=" $( echo ${EGO_INSTALLSUFFIX} )"
# Detects the total number of packages.
local pkgs=0 ifs_save=${IFS} IFS=$' '
for path in ${GOLANG_PKG_BUILDPATH[@]} ; do
pkgs=$(( $pkgs + 1 ))
done
[[ ${pkgs} -eq 0 ]] && pkgs=1 # there is always at least 1 package
IFS=${ifs_save}
# Builds the package
einfo "Compiling ${pkgs} package(s):"
if [[ -n ${GOLANG_PKG_BUILDPATH} && ${GOLANG_PKG_BUILDPATH##*/} != "..." && ${pkgs} -gt 1 ]]; then
# NOTE: This eclass trims all leading and trailing white spaces from the
# input of the following 'while read' loop, then appends an extra
# trailing space; this is necessary to avoid undefined behaviours
# within the loop when GOLANG_PKG_BUILDPATH is populated with only
# a single element.
while read -r -d $' ' cmd; do
# Ignores $cmd when it's empty or a string of white spaces
#einfo "cmd: |$cmd| cmd: |${cmd##*/}|"
[[ -n $cmd ]] || continue
golang_do_build \
${EGO_BUILD_FLAGS} \
-o "${GOBIN}/${cmd##*/}" \
"${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}${cmd}"
done <<< "$( echo ${GOLANG_PKG_BUILDPATH}) "
else
# If the package is a multiple package (/...)
# then this eclass doesn't specify the output name.
[[ ${GOLANG_PKG_BUILDPATH##*/} != "..." ]] && EGO_BUILD_FLAGS+=" -o ${GOBIN}/${GOLANG_PKG_OUTPUT_NAME}"
golang_do_build \
${EGO_BUILD_FLAGS} \
"${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}${GOLANG_PKG_BUILDPATH}"
fi
}
# @FUNCTION: golang-common_src_install
# @DESCRIPTION:
# Installs binaries and documents from DOCS or HTML_DOCS arrays.
golang-common_src_install() {
debug-print-function ${FUNCNAME} "${@}"
[[ ${EGO} ]] || die "No GoLang implementation set (golang_setup not called?)."
# Enables position-independent executables (PIE)
local EGO_PIE
use pie && EGO_PIE="-buildmode=pie"
# Defines the install suffix.
local EGO_INSTALLSUFFIX
[[ -z ${GOLANG_PKG_INSTALLSUFFIX} ]] || EGO_INSTALLSUFFIX="-installsuffix=${GOLANG_PKG_INSTALLSUFFIX}"
# Defines the level of verbosity.
local EGO_VERBOSE="-v"
[[ -z ${PORTAGE_VERBOSE} ]] || EGO_VERBOSE+=" -x"
# Defines the number of builds that can be run in parallel.
local EGO_PARALLEL="-p $(makeopts_jobs)"
# Defines extra options.
local EGO_EXTRA_OPTIONS
# Prepares build flags for the go toolchain.
local EGO_BUILD_FLAGS="$( echo ${EGO_VERBOSE} ) $( echo ${EGO_PARALLEL} ) $( echo ${EGO_EXTRA_OPTIONS} ) $( echo ${EGO_PIE} )"
[[ -n ${EGO_INSTALLSUFFIX} ]] && EGO_BUILD_FLAGS+=" $( echo ${EGO_INSTALLSUFFIX} )"
# Defines sub-packages.
local EGO_SUBPACKAGES="${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}${GOLANG_PKG_BUILDPATH}"
# Executes the pre-install phase (go install).
if [[ -n ${GOLANG_PKG_IS_MULTIPLE} ]]; then
einfo "${EGO} install -ldflags '$GOLANG_PKG_LDFLAGS' -tags '$GOLANG_PKG_TAGS' ${EGO_BUILD_FLAGS} ${EGO_SUBPACKAGES}"
${EGO} install \
-ldflags "${GOLANG_PKG_LDFLAGS}" \
-tags "${GOLANG_PKG_TAGS}" \
${EGO_BUILD_FLAGS} \
"${EGO_SUBPACKAGES}" \
|| die
fi
# Installs binaries.
into ${GOLANG_PKG_INSTALLPATH}
for bin in "${GOBIN}"/* ; do
dobin ${bin}
done
# Installs documentation.
einstalldocs
}
# @FUNCTION: golang-common_src_test
# @DESCRIPTION:
# Runs the unit tests for the main package.
golang-common_src_test() {
debug-print-function ${FUNCNAME} "${@}"
[[ ${EGO} ]] || die "No GoLang implementation set (golang_setup not called?)."
# Appends S and GOBIN to exported main paths.
# FIX: this is necessary for unit tests that need to invoke bins from
# $GOBIN or from within $S/bin.
export PATH="${S}/bin:${GOBIN}:${PATH}"
# Defines the level of verbosity.
local EGO_VERBOSE="-v"
[[ -z ${PORTAGE_VERBOSE} ]] || EGO_VERBOSE+=" -x"
# Defines the number of builds that can be run in parallel.
local EGO_PARALLEL="-p $(makeopts_jobs)"
# Defines extra options.
#local EGO_EXTRA_OPTIONS="-a"
# Enables data race detection.
local EGO_RACE
[[ -n ${GOLANG_PKG_HAVE_TEST_RACE} ]] && EGO_RACE=" -race"
# Prepares build flags for the go toolchain.
local EGO_BUILD_FLAGS="$( echo ${EGO_VERBOSE} ) $( echo ${EGO_PARALLEL} ) $( echo ${EGO_EXTRA_OPTIONS} )"
[[ -n ${EGO_RACE} ]] && EGO_BUILD_FLAGS+=" $( echo ${EGO_RACE} )"
# Sanitizes vars from entra white spaces.
GOLANG_PKG_LDFLAGS="$( echo ${GOLANG_PKG_LDFLAGS} )"
GOLANG_PKG_TAGS="$( echo ${GOLANG_PKG_TAGS} )"
# Defines sub-packages.
local EGO_SUBPACKAGES="${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}${GOLANG_PKG_BUILDPATH}"
[[ -z ${GOLANG_PKG_IS_MULTIPLE} ]] || EGO_SUBPACKAGES="./..."
# Detects the total number of packages.
local pkgs=0 ifs_save=${IFS} IFS=$' '
for path in ${GOLANG_PKG_BUILDPATH[@]} ; do
pkgs=$(( $pkgs + 1 ))
done
[[ ${pkgs} -eq 0 ]] && pkgs=1 # there is always at least 1 package
IFS=${ifs_save}
# Runs the Unit Tests
einfo "Testing ${pkgs} package(s):"
if [[ -n ${GOLANG_PKG_BUILDPATH} && ${GOLANG_PKG_BUILDPATH##*/} != "..." && ${pkgs} -gt 1 ]]; then
# NOTE: This eclass trims all leading and trailing white spaces from the
# input of the following 'while read' loop, then appends an extra
# trailing space; this is necessary to avoid undefined behaviours
# within the loop when GOLANG_PKG_BUILDPATH is populated with only
# a single element.
while read -r -d $' ' cmd; do
# Ignores $cmd when it's empty or a string of white spaces
#einfo "cmd: |$cmd| cmd: |${cmd##*/}|"
[[ -n $cmd ]] || continue
einfo "${EGO} test -ldflags '$GOLANG_PKG_LDFLAGS' -tags '$GOLANG_PKG_TAGS' ${EGO_BUILD_FLAGS} ${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}${cmd}/..."
${EGO} test \
-ldflags "${GOLANG_PKG_LDFLAGS}" \
-tags "${GOLANG_PKG_TAGS}" \
${EGO_BUILD_FLAGS} \
"${GOLANG_PKG_IMPORTPATH_ALIAS}/${GOLANG_PKG_NAME}${cmd}/..." \
|| die
done <<< "$( echo ${GOLANG_PKG_BUILDPATH}) "
else
# It's a single package
einfo "${EGO} test -ldflags '$GOLANG_PKG_LDFLAGS' -tags '$GOLANG_PKG_TAGS' ${EGO_BUILD_FLAGS} ${EGO_SUBPACKAGES}"
${EGO} test \
-ldflags "${GOLANG_PKG_LDFLAGS}" \
-tags "${GOLANG_PKG_TAGS}" \
${EGO_BUILD_FLAGS} \
"${EGO_SUBPACKAGES}" \
|| die
fi
}
# @FUNCTION: golang_do_build
# @INTERNAL
# @USAGE: <flags> <buildpath>
# @DESCRIPTION:
#
# @CODE
# Example:
# GOLANG_PKG_LDFLAGS="-extldflags=-static"
# GOLANG_PKG_TAGS="netgo"
#
# golang_do_build ${EGO_BUILD_FLAGS} ${GOLANG_PKG_IMPORTPATH}/${GOLANG_PKG_NAME}${GOLANG_PKG_BUILDPATH}
# @CODE
golang_do_build() {
debug-print-function ${FUNCNAME} $*
[[ ${GOLANG_VERSION} ]] || die "No GoLang implementation set (golang_setup not called?)."
# Filters "=" chars from ldflags declaration.
# NOTE: from go1.5+ linker syntax is no more compatible with <go1.4;
# this hack ensures that the old behaviour is honoured.
if [[ $( ver_cut 1-2 ${GOLANG_VERSION} ) == "1.4" ]]; then
GOLANG_PKG_LDFLAGS="${GOLANG_PKG_LDFLAGS//=/ }"
fi
# Disables debug symbols (DWARF) when not required.
if ! use debug; then
case "${GOLANG_PKG_LDFLAGS}" in
*-s*|*-w*)
# Do nothing
;;
*)
GOLANG_PKG_LDFLAGS+=" -s -w"
esac
fi
# Sanitizes vars from entra white spaces.
GOLANG_PKG_LDFLAGS="$( echo ${GOLANG_PKG_LDFLAGS} )"
GOLANG_PKG_TAGS="$( echo ${GOLANG_PKG_TAGS} )"
einfo "${EGO} build -ldflags '$GOLANG_PKG_LDFLAGS' -tags '$GOLANG_PKG_TAGS' $*"
${EGO} build \
-ldflags "${GOLANG_PKG_LDFLAGS}" \
-tags "${GOLANG_PKG_TAGS}" \
$( echo $* ) \
|| die
}
# @FUNCTION: golang_add_vendor
# @INTERNAL
# @USAGE: <path>
# @DESCRIPTION:
#
# @CODE
# Example
#
# golang_add_vendor "${S}"/vendor
# golang_add_vendor "${S}"/${PN}/vendor
# @CODE
golang_add_vendor() {
debug-print-function ${FUNCNAME} $*
[[ ${1} ]] || die "${FUNCNAME}: no paths given"
[[ ${GOLANG_VERSION} ]] || die "No Golang implementation set (golang_setup not called?)."
[[ ! -d "${1}" ]] && return
# NOTE: this hack is required by Go v1.4 and older versions.
#if [[ ! -d "${1}"/src ]]; then
# ebegin "Fixing $1"
# ln -s "${1}" "${1}"/src || die
# eend
#fi
GOLANG_PKG_VENDOR+=(${1})
}
# @FUNCTION: golang_fix_importpath_alias
# @USAGE: <target> <alias>
# @DESCRIPTION:
# Helper functions for generating a symbolic link for import path <target> as
# <alias>.
#
# WARNING: Use this function only if GOLANG_PKG_DEPENDENCIES declaration of
# import path aliases doesn't work (e.g.: the package name differs from both the
# import path and the alias, or if the package name is case sensitive but the
# import path is not).
#
# @CODE
# Example:
#
# src_prepare() {
# golang-single_src_prepare
#
# golang_fix_importpath_alias \
# "github.com/GoogleCloudPlatform/gcloud-golang" \
# "google.golang.org/cloud"
# }
# @CODE
golang_fix_importpath_alias() {
debug-print-function ${FUNCNAME} "${@}"
[[ ${1} ]] || die "${FUNCNAME}: no target specified"
[[ ${2} ]] || die "${FUNCNAME}: no alias specified"
[[ ${EGO} ]] || die "No GoLang implementation set (golang_setup not called?)."
local TARGET="${1}"
local ALIAS="${2}"
if [[ ${ALIAS%/*} != ${ALIAS} ]]; then
mkdir -p "${GOPATH}/src/${ALIAS%/*}" || die
fi
ebegin "Linking ${TARGET} as ${ALIAS}"
ln -s "${GOPATH}/src/${TARGET}" \
"${GOPATH}/src/${ALIAS}" \
|| die
eend
}
fi