[gentoo-commits] proj/kde:master commit in: eclass/

["Andreas Sturmlechner" <asturm@gentoo.org>]

commit:     0fa5f23622bf934ed40bd2f0876084f6e566513a
Author:     Andreas Sturmlechner <asturm <AT> gentoo <DOT> org>
AuthorDate: Sat Nov 16 15:37:58 2019 +0000
Commit:     Andreas Sturmlechner <asturm <AT> gentoo <DOT> org>
CommitDate: Sat Dec 21 10:33:05 2019 +0000
URL:        https://gitweb.gentoo.org/proj/kde.git/commit/?id=0fa5f236

cmake.eclass: Initial copy from cmake-utils.eclass

Signed-off-by: Andreas Sturmlechner <asturm <AT> gentoo.org>

 eclass/cmake.eclass | 826 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 826 insertions(+)

diff --git a/eclass/cmake.eclass b/eclass/cmake.eclass
new file mode 100644
index 0000000000..e7a48116da
--- /dev/null
+++ b/eclass/cmake.eclass
@@ -0,0 +1,826 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: cmake-utils.eclass
+# @MAINTAINER:
+# kde@gentoo.org
+# @AUTHOR:
+# Tomáš Chvátal <scarabeus@gentoo.org>
+# Maciej Mrozowski <reavertm@gentoo.org>
+# (undisclosed contributors)
+# Original author: Zephyrus (zephyrus@mirach.it)
+# @SUPPORTED_EAPIS: 5 6 7
+# @BLURB: common ebuild functions for cmake-based packages
+# @DESCRIPTION:
+# The cmake-utils eclass makes creating ebuilds for cmake-based packages much easier.
+# It provides all inherited features (DOCS, HTML_DOCS, PATCHES) along with out-of-source
+# builds (default), in-source builds and an implementation of the well-known use_enable
+# and use_with functions for CMake.
+
+if [[ -z ${_CMAKE_UTILS_ECLASS} ]]; then
+_CMAKE_UTILS_ECLASS=1
+
+# @ECLASS-VARIABLE: BUILD_DIR
+# @DESCRIPTION:
+# Build directory where all cmake processed files should be generated.
+# For in-source build it's fixed to ${CMAKE_USE_DIR}.
+# For out-of-source build it can be overridden, by default it uses
+# ${WORKDIR}/${P}_build.
+#
+# This variable has been called CMAKE_BUILD_DIR formerly.
+# It is set under that name for compatibility.
+
+# @ECLASS-VARIABLE: CMAKE_BINARY
+# @DESCRIPTION:
+# Eclass can use different cmake binary than the one provided in by system.
+: ${CMAKE_BINARY:=cmake}
+
+# @ECLASS-VARIABLE: CMAKE_BUILD_TYPE
+# @DESCRIPTION:
+# Set to override default CMAKE_BUILD_TYPE. Only useful for packages
+# known to make use of "if (CMAKE_BUILD_TYPE MATCHES xxx)".
+# If about to be set - needs to be set before invoking cmake-utils_src_configure.
+# You usualy do *NOT* want nor need to set it as it pulls CMake default build-type
+# specific compiler flags overriding make.conf.
+: ${CMAKE_BUILD_TYPE:=Gentoo}
+
+# @ECLASS-VARIABLE: CMAKE_IN_SOURCE_BUILD
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Set to enable in-source build.
+
+# @ECLASS-VARIABLE: CMAKE_MAKEFILE_GENERATOR
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Specify a makefile generator to be used by cmake.
+# At this point only "emake" and "ninja" are supported.
+# In EAPI 7 and above, the default is set to "ninja",
+# whereas in EAPIs below 7, it is set to "emake".
+
+# @ECLASS-VARIABLE: CMAKE_MIN_VERSION
+# @DESCRIPTION:
+# Specify the minimum required CMake version.
+: ${CMAKE_MIN_VERSION:=3.9.6}
+
+# @ECLASS-VARIABLE: CMAKE_REMOVE_MODULES
+# @DESCRIPTION:
+# Do we want to remove anything? yes or whatever else for no
+: ${CMAKE_REMOVE_MODULES:=yes}
+
+# @ECLASS-VARIABLE: CMAKE_REMOVE_MODULES_LIST
+# @DESCRIPTION:
+# Space-separated list of CMake modules that will be removed in $S during src_prepare,
+# in order to force packages to use the system version.
+: ${CMAKE_REMOVE_MODULES_LIST:=FindBLAS FindLAPACK}
+
+# @ECLASS-VARIABLE: CMAKE_USE_DIR
+# @DESCRIPTION:
+# Sets the directory where we are working with cmake.
+# For example when application uses autotools and only one
+# plugin needs to be done by cmake.
+# By default it uses ${S}.
+
+# @ECLASS-VARIABLE: CMAKE_VERBOSE
+# @DESCRIPTION:
+# Set to OFF to disable verbose messages during compilation
+: ${CMAKE_VERBOSE:=ON}
+
+# @ECLASS-VARIABLE: CMAKE_WARN_UNUSED_CLI
+# @DESCRIPTION:
+# Warn about variables that are declared on the command line
+# but not used. Might give false-positives.
+# "no" to disable (default) or anything else to enable.
+
+# @ECLASS-VARIABLE: CMAKE_EXTRA_CACHE_FILE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Specifies an extra cache file to pass to cmake. This is the analog of EXTRA_ECONF
+# for econf and is needed to pass TRY_RUN results when cross-compiling.
+# Should be set by user in a per-package basis in /etc/portage/package.env.
+
+# @ECLASS-VARIABLE: CMAKE_UTILS_QA_SRC_DIR_READONLY
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# After running cmake-utils_src_prepare, sets ${S} to read-only. This is
+# a user flag and should under _no circumstances_ be set in the ebuild.
+# Helps in improving QA of build systems that write to source tree.
+
+case ${EAPI} in
+	5) : ${CMAKE_WARN_UNUSED_CLI:=no} ;;
+	6|7) : ${CMAKE_WARN_UNUSED_CLI:=yes} ;;
+	*) die "EAPI=${EAPI:-0} is not supported" ;;
+esac
+
+inherit toolchain-funcs ninja-utils flag-o-matic multiprocessing xdg-utils
+
+case ${EAPI} in
+	[56])
+		: ${CMAKE_MAKEFILE_GENERATOR:=emake}
+		inherit eutils multilib
+		;;
+	*)
+		: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
+		;;
+esac
+
+EXPORT_FUNCTIONS src_prepare src_configure src_compile src_test src_install
+
+if [[ ${WANT_CMAKE} ]]; then
+	if [[ ${EAPI} != [56] ]]; then
+		die "\${WANT_CMAKE} has been removed and is a no-op now"
+	else
+		eqawarn "\${WANT_CMAKE} has been removed and is a no-op now"
+	fi
+fi
+[[ ${PREFIX} ]] && die "\${PREFIX} has been removed and is a no-op now"
+
+case ${CMAKE_MAKEFILE_GENERATOR} in
+	emake)
+		BDEPEND="sys-devel/make"
+		;;
+	ninja)
+		BDEPEND="dev-util/ninja"
+		;;
+	*)
+		eerror "Unknown value for \${CMAKE_MAKEFILE_GENERATOR}"
+		die "Value ${CMAKE_MAKEFILE_GENERATOR} is not supported"
+		;;
+esac
+
+if [[ ${PN} != cmake ]]; then
+	BDEPEND+=" >=dev-util/cmake-${CMAKE_MIN_VERSION}"
+fi
+
+case ${EAPI} in
+	7) ;;
+	*) DEPEND=" ${BDEPEND}" ;;
+esac
+
+# Internal functions used by cmake-utils_use_*
+_cmake_use_me_now() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local arg=$2
+	[[ ! -z $3 ]] && arg=$3
+
+	[[ ${EAPI} == 5 ]] || die "${FUNCNAME[1]} is banned in EAPI 6 and later: use -D$1<related_CMake_variable>=\"\$(usex $2)\" instead"
+
+	local uper capitalised x
+	[[ -z $2 ]] && die "cmake-utils_use-$1 <USE flag> [<flag name>]"
+	if [[ ! -z $3 ]]; then
+		# user specified the use name so use it
+		echo "-D$1$3=$(use $2 && echo ON || echo OFF)"
+	else
+		# use all various most used combinations
+		uper=$(echo ${2} | tr '[:lower:]' '[:upper:]')
+		capitalised=$(echo ${2} | sed 's/\<\(.\)\([^ ]*\)/\u\1\L\2/g')
+		for x in $2 $uper $capitalised; do
+			echo "-D$1$x=$(use $2 && echo ON || echo OFF) "
+		done
+	fi
+}
+_cmake_use_me_now_inverted() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local arg=$2
+	[[ ! -z $3 ]] && arg=$3
+
+	if [[ ${EAPI} != 5 && "${FUNCNAME[1]}" != cmake-utils_use_find_package ]] ; then
+		die "${FUNCNAME[1]} is banned in EAPI 6 and later: use -D$1<related_CMake_variable>=\"\$(usex $2)\" instead"
+	fi
+
+	local uper capitalised x
+	[[ -z $2 ]] && die "cmake-utils_use-$1 <USE flag> [<flag name>]"
+	if [[ ! -z $3 ]]; then
+		# user specified the use name so use it
+		echo "-D$1$3=$(use $2 && echo OFF || echo ON)"
+	else
+		# use all various most used combinations
+		uper=$(echo ${2} | tr '[:lower:]' '[:upper:]')
+		capitalised=$(echo ${2} | sed 's/\<\(.\)\([^ ]*\)/\u\1\L\2/g')
+		for x in $2 $uper $capitalised; do
+			echo "-D$1$x=$(use $2 && echo OFF || echo ON) "
+		done
+	fi
+}
+
+# Determine using IN or OUT source build
+_cmake_check_build_dir() {
+	: ${CMAKE_USE_DIR:=${S}}
+	if [[ -n ${CMAKE_IN_SOURCE_BUILD} ]]; then
+		# we build in source dir
+		BUILD_DIR="${CMAKE_USE_DIR}"
+	else
+		# Respect both the old variable and the new one, depending
+		# on which one was set by the ebuild.
+		if [[ ! ${BUILD_DIR} && ${CMAKE_BUILD_DIR} ]]; then
+			if [[ ${EAPI} != [56] ]]; then
+				eerror "The CMAKE_BUILD_DIR variable has been renamed to BUILD_DIR."
+				die "The ebuild must be migrated to BUILD_DIR."
+			else
+				eqawarn "The CMAKE_BUILD_DIR variable has been renamed to BUILD_DIR."
+				eqawarn "Please migrate the ebuild to use the new one."
+			fi
+
+			# In the next call, both variables will be set already
+			# and we'd have to know which one takes precedence.
+			_RESPECT_CMAKE_BUILD_DIR=1
+		fi
+
+		if [[ ${_RESPECT_CMAKE_BUILD_DIR} ]]; then
+			BUILD_DIR=${CMAKE_BUILD_DIR:-${WORKDIR}/${P}_build}
+		else
+			: ${BUILD_DIR:=${WORKDIR}/${P}_build}
+		fi
+	fi
+
+	# Backwards compatibility for getting the value.
+	[[ ${EAPI} == [56] ]] && CMAKE_BUILD_DIR=${BUILD_DIR}
+
+	mkdir -p "${BUILD_DIR}" || die
+	echo ">>> Working in BUILD_DIR: \"$BUILD_DIR\""
+}
+
+# Determine which generator to use
+_cmake_generator_to_use() {
+	local generator_name
+
+	case ${CMAKE_MAKEFILE_GENERATOR} in
+		ninja)
+			# if ninja is enabled but not installed, the build could fail
+			# this could happen if ninja is manually enabled (eg. make.conf) but not installed
+			case ${EAPI} in
+				5|6)
+					if ! ROOT=/ has_version dev-util/ninja; then
+						die "CMAKE_MAKEFILE_GENERATOR is set to ninja, but ninja is not installed. Please install dev-util/ninja or unset CMAKE_MAKEFILE_GENERATOR."
+					fi
+				;;
+				*)
+					if ! has_version -b dev-util/ninja; then
+						die "CMAKE_MAKEFILE_GENERATOR is set to ninja, but ninja is not installed. Please install dev-util/ninja or unset CMAKE_MAKEFILE_GENERATOR."
+					fi
+				;;
+			esac
+			generator_name="Ninja"
+			;;
+		emake)
+			generator_name="Unix Makefiles"
+			;;
+		*)
+			eerror "Unknown value for \${CMAKE_MAKEFILE_GENERATOR}"
+			die "Value ${CMAKE_MAKEFILE_GENERATOR} is not supported"
+			;;
+	esac
+
+	echo ${generator_name}
+}
+
+# @FUNCTION: cmake_comment_add_subdirectory
+# @USAGE: <subdirectory>
+# @DESCRIPTION:
+# Comment out one or more add_subdirectory calls in CMakeLists.txt in the current directory
+cmake_comment_add_subdirectory() {
+	if [[ -z ${1} ]]; then
+		die "comment_add_subdirectory must be passed at least one directory name to comment"
+	fi
+
+	if [[ -e "CMakeLists.txt" ]]; then
+		local d
+		for d in $@; do
+			sed -e "/add_subdirectory[[:space:]]*([[:space:]]*${d//\//\\/}[[:space:]]*)/I s/^/#DONOTCOMPILE /" \
+				-i CMakeLists.txt || die "failed to comment add_subdirectory(${d})"
+		done
+	fi
+}
+
+# @FUNCTION: comment_add_subdirectory
+# @USAGE: <subdirectory>
+# @DESCRIPTION:
+# Comment out an add_subdirectory call in CMakeLists.txt in the current directory
+# Banned in EAPI 6 and later - use cmake_comment_add_subdirectory instead.
+comment_add_subdirectory() {
+	[[ ${EAPI} == 5 ]] || die "comment_add_subdirectory is banned in EAPI 6 and later - use cmake_comment_add_subdirectory instead"
+
+	cmake_comment_add_subdirectory "$@"
+}
+
+# @FUNCTION: cmake-utils_use_with
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_with. See ebuild(5).
+#
+# `cmake-utils_use_with foo FOO` echoes -DWITH_FOO=ON if foo is enabled
+# and -DWITH_FOO=OFF if it is disabled.
+cmake-utils_use_with() { _cmake_use_me_now WITH_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use_enable
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_use_enable foo FOO` echoes -DENABLE_FOO=ON if foo is enabled
+# and -DENABLE_FOO=OFF if it is disabled.
+cmake-utils_use_enable() { _cmake_use_me_now ENABLE_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use_find_package
+# @USAGE: <USE flag> <package name>
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_use_find_package foo LibFoo` echoes -DCMAKE_DISABLE_FIND_PACKAGE_LibFoo=OFF
+# if foo is enabled and -DCMAKE_DISABLE_FIND_PACKAGE_LibFoo=ON if it is disabled.
+# This can be used to make find_package optional.
+cmake-utils_use_find_package() {
+	if [[ ${EAPI} != 5 && "$#" != 2 ]] ; then
+		die "Usage: cmake-utils_use_find_package <USE flag> <package name>"
+	fi
+
+	_cmake_use_me_now_inverted CMAKE_DISABLE_FIND_PACKAGE_ "$@" ;
+}
+
+# @FUNCTION: cmake-utils_use_disable
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on inversion of use_enable. See ebuild(5).
+#
+# `cmake-utils_use_enable foo FOO` echoes -DDISABLE_FOO=OFF if foo is enabled
+# and -DDISABLE_FOO=ON if it is disabled.
+cmake-utils_use_disable() { _cmake_use_me_now_inverted DISABLE_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use_no
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_disable. See ebuild(5).
+#
+# `cmake-utils_use_no foo FOO` echoes -DNO_FOO=OFF if foo is enabled
+# and -DNO_FOO=ON if it is disabled.
+cmake-utils_use_no() { _cmake_use_me_now_inverted NO_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use_want
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_use_want foo FOO` echoes -DWANT_FOO=ON if foo is enabled
+# and -DWANT_FOO=OFF if it is disabled.
+cmake-utils_use_want() { _cmake_use_me_now WANT_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use_build
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_use_build foo FOO` echoes -DBUILD_FOO=ON if foo is enabled
+# and -DBUILD_FOO=OFF if it is disabled.
+cmake-utils_use_build() { _cmake_use_me_now BUILD_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use_has
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_use_has foo FOO` echoes -DHAVE_FOO=ON if foo is enabled
+# and -DHAVE_FOO=OFF if it is disabled.
+cmake-utils_use_has() { _cmake_use_me_now HAVE_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use_use
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_use_use foo FOO` echoes -DUSE_FOO=ON if foo is enabled
+# and -DUSE_FOO=OFF if it is disabled.
+cmake-utils_use_use() { _cmake_use_me_now USE_ "$@" ; }
+
+# @FUNCTION: cmake-utils_use
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_use foo FOO` echoes -DFOO=ON if foo is enabled
+# and -DFOO=OFF if it is disabled.
+cmake-utils_use() { _cmake_use_me_now "" "$@" ; }
+
+# @FUNCTION: cmake-utils_useno
+# @USAGE: <USE flag> [flag name]
+# @DESCRIPTION:
+# Based on use_enable. See ebuild(5).
+#
+# `cmake-utils_useno foo NOFOO` echoes -DNOFOO=OFF if foo is enabled
+# and -DNOFOO=ON if it is disabled.
+cmake-utils_useno() { _cmake_use_me_now_inverted "" "$@" ; }
+
+# Internal function for modifying hardcoded definitions.
+# Removes dangerous definitions that override Gentoo settings.
+_cmake_modify-cmakelists() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	# Only edit the files once
+	grep -qs "<<< Gentoo configuration >>>" "${CMAKE_USE_DIR}"/CMakeLists.txt && return 0
+
+	# Comment out all set (<some_should_be_user_defined_variable> value)
+	find "${CMAKE_USE_DIR}" -name CMakeLists.txt -exec sed \
+		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_BUILD_TYPE\([[:space:]].*)\|)\)/I{s/^/#_cmake_modify_IGNORE /g}' \
+		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_COLOR_MAKEFILE[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' \
+		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_INSTALL_PREFIX[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' \
+		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_VERBOSE_MAKEFILE[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' \
+		-i {} + || die "${LINENO}: failed to disable hardcoded settings"
+	local x
+	for x in $(find "${CMAKE_USE_DIR}" -name CMakeLists.txt -exec grep -l "^#_cmake_modify_IGNORE" {} +;); do
+		einfo "Hardcoded definition(s) removed in $(echo "${x}" | cut -c $((${#CMAKE_USE_DIR}+2))-):"
+		einfo "$(grep -se '^#_cmake_modify_IGNORE' ${x} | cut -c 22-99)"
+	done
+
+	# NOTE Append some useful summary here
+	cat >> "${CMAKE_USE_DIR}"/CMakeLists.txt <<- _EOF_ || die
+
+		MESSAGE(STATUS "<<< Gentoo configuration >>>
+		Build type      \${CMAKE_BUILD_TYPE}
+		Install path    \${CMAKE_INSTALL_PREFIX}
+		Compiler flags:
+		C               \${CMAKE_C_FLAGS}
+		C++             \${CMAKE_CXX_FLAGS}
+		Linker flags:
+		Executable      \${CMAKE_EXE_LINKER_FLAGS}
+		Module          \${CMAKE_MODULE_LINKER_FLAGS}
+		Shared          \${CMAKE_SHARED_LINKER_FLAGS}\n")
+	_EOF_
+}
+
+# temporary function for moving cmake cleanups from from src_configure -> src_prepare.
+# bug #378850
+_cmake_cleanup_cmake() {
+	: ${CMAKE_USE_DIR:=${S}}
+
+	if [[ "${CMAKE_REMOVE_MODULES}" == "yes" ]] ; then
+		local name
+		for name in ${CMAKE_REMOVE_MODULES_LIST} ; do
+			find "${S}" -name ${name}.cmake -exec rm -v {} + || die
+		done
+	fi
+
+	# check if CMakeLists.txt exist and if no then die
+	if [[ ! -e ${CMAKE_USE_DIR}/CMakeLists.txt ]] ; then
+		eerror "Unable to locate CMakeLists.txt under:"
+		eerror "\"${CMAKE_USE_DIR}/CMakeLists.txt\""
+		eerror "Consider not inheriting the cmake eclass."
+		die "FATAL: Unable to find CMakeLists.txt"
+	fi
+
+	# Remove dangerous things.
+	_cmake_modify-cmakelists
+}
+
+# @FUNCTION: cmake-utils_src_prepare
+# @DESCRIPTION:
+# Apply ebuild and user patches.
+cmake-utils_src_prepare() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	pushd "${S}" > /dev/null || die
+
+	if [[ ${EAPI} != 5 ]]; then
+		default_src_prepare
+		_cmake_cleanup_cmake
+	else
+		debug-print "$FUNCNAME: PATCHES=$PATCHES"
+		[[ ${PATCHES[@]} ]] && epatch "${PATCHES[@]}"
+
+		debug-print "$FUNCNAME: applying user patches"
+		epatch_user
+	fi
+
+	popd > /dev/null || die
+
+	# make ${S} read-only in order to detect broken build-systems
+	if [[ ${CMAKE_UTILS_QA_SRC_DIR_READONLY} && ! ${CMAKE_IN_SOURCE_BUILD} ]]; then
+		chmod -R a-w "${S}"
+	fi
+
+	_CMAKE_UTILS_SRC_PREPARE_HAS_RUN=1
+}
+
+# @VARIABLE: mycmakeargs
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Optional cmake defines as a bash array. Should be defined before calling
+# src_configure.
+# @CODE
+# src_configure() {
+# 	local mycmakeargs=(
+# 		$(cmake-utils_use_with openconnect)
+# 	)
+#
+# 	cmake-utils_src_configure
+# }
+# @CODE
+
+# @FUNCTION: cmake-utils_src_configure
+# @DESCRIPTION:
+# General function for configuring with cmake. Default behaviour is to start an
+# out-of-source build.
+cmake-utils_src_configure() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ! ${_CMAKE_UTILS_SRC_PREPARE_HAS_RUN} ]]; then
+		if [[ ${EAPI} != [56] ]]; then
+			die "FATAL: cmake-utils_src_prepare has not been run"
+		else
+			eqawarn "cmake-utils_src_prepare has not been run, please open a bug on https://bugs.gentoo.org/"
+		fi
+	fi
+
+	[[ ${EAPI} == 5 ]] && _cmake_cleanup_cmake
+
+	_cmake_check_build_dir
+
+	# Fix xdg collision with sandbox
+	xdg_environment_reset
+
+	# @SEE CMAKE_BUILD_TYPE
+	if [[ ${CMAKE_BUILD_TYPE} = Gentoo ]]; then
+		# Handle release builds
+		if ! has debug ${IUSE//+} || ! use debug; then
+			local CPPFLAGS=${CPPFLAGS}
+			append-cppflags -DNDEBUG
+		fi
+	fi
+
+	# Prepare Gentoo override rules (set valid compiler, append CPPFLAGS etc.)
+	local build_rules=${BUILD_DIR}/gentoo_rules.cmake
+
+	cat > "${build_rules}" <<- _EOF_ || die
+		SET (CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "ASM compile command" FORCE)
+		SET (CMAKE_ASM-ATT_COMPILE_OBJECT "<CMAKE_ASM-ATT_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c -x assembler <SOURCE>" CACHE STRING "ASM-ATT compile command" FORCE)
+		SET (CMAKE_ASM-ATT_LINK_FLAGS "-nostdlib" CACHE STRING "ASM-ATT link flags" FORCE)
+		SET (CMAKE_C_COMPILE_OBJECT "<CMAKE_C_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C compile command" FORCE)
+		SET (CMAKE_CXX_COMPILE_OBJECT "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C++ compile command" FORCE)
+		SET (CMAKE_Fortran_COMPILE_OBJECT "<CMAKE_Fortran_COMPILER> <DEFINES> <INCLUDES> ${FCFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "Fortran compile command" FORCE)
+	_EOF_
+
+	local myCC=$(tc-getCC) myCXX=$(tc-getCXX) myFC=$(tc-getFC)
+
+	# !!! IMPORTANT NOTE !!!
+	# Single slash below is intentional. CMake is weird and wants the
+	# CMAKE_*_VARIABLES split into two elements: the first one with
+	# compiler path, and the second one with all command-line options,
+	# space separated.
+	local toolchain_file=${BUILD_DIR}/gentoo_toolchain.cmake
+	cat > ${toolchain_file} <<- _EOF_ || die
+		SET (CMAKE_ASM_COMPILER "${myCC/ /;}")
+		SET (CMAKE_ASM-ATT_COMPILER "${myCC/ /;}")
+		SET (CMAKE_C_COMPILER "${myCC/ /;}")
+		SET (CMAKE_CXX_COMPILER "${myCXX/ /;}")
+		SET (CMAKE_Fortran_COMPILER "${myFC/ /;}")
+		SET (CMAKE_AR $(type -P $(tc-getAR)) CACHE FILEPATH "Archive manager" FORCE)
+		SET (CMAKE_RANLIB $(type -P $(tc-getRANLIB)) CACHE FILEPATH "Archive index generator" FORCE)
+		SET (CMAKE_SYSTEM_PROCESSOR "${CHOST%%-*}")
+	_EOF_
+
+	# We are using the C compiler for assembly by default.
+	local -x ASMFLAGS=${CFLAGS}
+	local -x PKG_CONFIG=$(tc-getPKG_CONFIG)
+
+	if tc-is-cross-compiler; then
+		local sysname
+		case "${KERNEL:-linux}" in
+			Cygwin) sysname="CYGWIN_NT-5.1" ;;
+			HPUX) sysname="HP-UX" ;;
+			linux) sysname="Linux" ;;
+			Winnt)
+				sysname="Windows"
+				cat >> "${toolchain_file}" <<- _EOF_ || die
+					SET (CMAKE_RC_COMPILER $(tc-getRC))
+				_EOF_
+				;;
+			*) sysname="${KERNEL}" ;;
+		esac
+
+		cat >> "${toolchain_file}" <<- _EOF_ || die
+			SET (CMAKE_SYSTEM_NAME "${sysname}")
+		_EOF_
+
+		if [ "${SYSROOT:-/}" != "/" ] ; then
+			# When cross-compiling with a sysroot (e.g. with crossdev's emerge wrappers)
+			# we need to tell cmake to use libs/headers from the sysroot but programs from / only.
+			cat >> "${toolchain_file}" <<- _EOF_ || die
+				SET (CMAKE_FIND_ROOT_PATH "${SYSROOT}")
+				SET (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+				SET (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+				SET (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+			_EOF_
+		fi
+	fi
+
+	if use prefix-guest; then
+		cat >> "${build_rules}" <<- _EOF_ || die
+			# in Prefix we need rpath and must ensure cmake gets our default linker path
+			# right ... except for Darwin hosts
+			IF (NOT APPLE)
+			SET (CMAKE_SKIP_RPATH OFF CACHE BOOL "" FORCE)
+			SET (CMAKE_PLATFORM_REQUIRED_RUNTIME_PATH "${EPREFIX}/usr/${CHOST}/lib/gcc;${EPREFIX}/usr/${CHOST}/lib;${EPREFIX}/usr/$(get_libdir);${EPREFIX}/$(get_libdir)"
+			CACHE STRING "" FORCE)
+
+			ELSE ()
+
+			SET (CMAKE_PREFIX_PATH "${EPREFIX}/usr" CACHE STRING "" FORCE)
+			SET (CMAKE_MACOSX_RPATH ON CACHE BOOL "" FORCE)
+			SET (CMAKE_SKIP_BUILD_RPATH OFF CACHE BOOL "" FORCE)
+			SET (CMAKE_SKIP_RPATH OFF CACHE BOOL "" FORCE)
+			SET (CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE CACHE BOOL "" FORCE)
+
+			ENDIF (NOT APPLE)
+		_EOF_
+	fi
+
+	# Common configure parameters (invariants)
+	local common_config=${BUILD_DIR}/gentoo_common_config.cmake
+	local libdir=$(get_libdir)
+	cat > "${common_config}" <<- _EOF_ || die
+		SET (CMAKE_GENTOO_BUILD ON CACHE BOOL "Indicate Gentoo package build")
+		SET (LIB_SUFFIX ${libdir/lib} CACHE STRING "library path suffix" FORCE)
+		SET (CMAKE_INSTALL_LIBDIR ${libdir} CACHE PATH "Output directory for libraries")
+		SET (CMAKE_INSTALL_INFODIR "${EPREFIX}/usr/share/info" CACHE PATH "")
+		SET (CMAKE_INSTALL_MANDIR "${EPREFIX}/usr/share/man" CACHE PATH "")
+		SET (CMAKE_USER_MAKE_RULES_OVERRIDE "${build_rules}" CACHE FILEPATH "Gentoo override rules")
+	_EOF_
+	[[ "${NOCOLOR}" = true || "${NOCOLOR}" = yes ]] && echo 'SET (CMAKE_COLOR_MAKEFILE OFF CACHE BOOL "pretty colors during make" FORCE)' >> "${common_config}"
+
+	if [[ ${EAPI} != [56] ]]; then
+		cat >> "${common_config}" <<- _EOF_ || die
+			SET (CMAKE_INSTALL_DOCDIR "${EPREFIX}/usr/share/doc/${PF}" CACHE PATH "")
+			SET (BUILD_SHARED_LIBS ON CACHE BOOL "")
+		_EOF_
+	fi
+
+	# Wipe the default optimization flags out of CMake
+	if [[ ${CMAKE_BUILD_TYPE} != Gentoo && ${EAPI} != 5 ]]; then
+		cat >> ${common_config} <<- _EOF_ || die
+			SET (CMAKE_ASM_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_ASM-ATT_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_Fortran_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_MODULE_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_SHARED_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+			SET (CMAKE_STATIC_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
+		_EOF_
+	fi
+
+	# Convert mycmakeargs to an array, for backwards compatibility
+	# Make the array a local variable since <=portage-2.1.6.x does not
+	# support global arrays (see bug #297255).
+	local mycmakeargstype=$(declare -p mycmakeargs 2>&-)
+	if [[ "${mycmakeargstype}" != "declare -a mycmakeargs="* ]]; then
+		if [[ -n "${mycmakeargstype}" ]] ; then
+			if [[ ${EAPI} == 5 ]]; then
+				eqawarn "Declaring mycmakeargs as a variable is deprecated. Please use an array instead."
+			else
+				die "Declaring mycmakeargs as a variable is banned in EAPI=${EAPI}. Please use an array instead."
+			fi
+		fi
+		local mycmakeargs_local=(${mycmakeargs})
+	else
+		local mycmakeargs_local=("${mycmakeargs[@]}")
+	fi
+
+	if [[ ${CMAKE_WARN_UNUSED_CLI} == no ]] ; then
+		local warn_unused_cli="--no-warn-unused-cli"
+	else
+		local warn_unused_cli=""
+	fi
+
+	# Common configure parameters (overridable)
+	# NOTE CMAKE_BUILD_TYPE can be only overridden via CMAKE_BUILD_TYPE eclass variable
+	# No -DCMAKE_BUILD_TYPE=xxx definitions will be in effect.
+	local cmakeargs=(
+		${warn_unused_cli}
+		-C "${common_config}"
+		-G "$(_cmake_generator_to_use)"
+		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr"
+		"${mycmakeargs_local[@]}"
+		-DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}"
+		$([[ ${EAPI} == 5 ]] && echo -DCMAKE_INSTALL_DO_STRIP=OFF)
+		-DCMAKE_TOOLCHAIN_FILE="${toolchain_file}"
+		"${MYCMAKEARGS}"
+	)
+
+	if [[ -n "${CMAKE_EXTRA_CACHE_FILE}" ]] ; then
+		cmakeargs+=( -C "${CMAKE_EXTRA_CACHE_FILE}" )
+	fi
+
+	pushd "${BUILD_DIR}" > /dev/null || die
+	debug-print "${LINENO} ${ECLASS} ${FUNCNAME}: mycmakeargs is ${mycmakeargs_local[*]}"
+	echo "${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}"
+	"${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}" || die "cmake failed"
+	popd > /dev/null || die
+}
+
+# @FUNCTION: cmake-utils_src_compile
+# @DESCRIPTION:
+# General function for compiling with cmake.
+# Automatically detects the build type. All arguments are passed to emake.
+cmake-utils_src_compile() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	cmake-utils_src_make "$@"
+}
+
+# @FUNCTION: _cmake_ninja_src_make
+# @INTERNAL
+# @DESCRIPTION:
+# Build the package using ninja generator
+_cmake_ninja_src_make() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	[[ -e build.ninja ]] || die "build.ninja not found. Error during configure stage."
+
+	eninja "$@"
+}
+
+# @FUNCTION: _cmake_emake_src_make
+# @INTERNAL
+# @DESCRIPTION:
+# Build the package using make generator
+_cmake_emake_src_make() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	[[ -e Makefile ]] || die "Makefile not found. Error during configure stage."
+
+	if [[ "${CMAKE_VERBOSE}" != "OFF" ]]; then
+		emake VERBOSE=1 "$@" || die
+	else
+		emake "$@" || die
+	fi
+
+}
+
+# @FUNCTION: cmake-utils_src_make
+# @DESCRIPTION:
+# Function for building the package. Automatically detects the build type.
+# All arguments are passed to emake.
+cmake-utils_src_make() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	_cmake_check_build_dir
+	pushd "${BUILD_DIR}" > /dev/null || die
+
+	_cmake_${CMAKE_MAKEFILE_GENERATOR}_src_make "$@"
+
+	popd > /dev/null || die
+}
+
+# @FUNCTION: cmake-utils_src_test
+# @DESCRIPTION:
+# Function for testing the package. Automatically detects the build type.
+cmake-utils_src_test() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	_cmake_check_build_dir
+	pushd "${BUILD_DIR}" > /dev/null || die
+	[[ -e CTestTestfile.cmake ]] || { echo "No tests found. Skipping."; return 0 ; }
+
+	[[ -n ${TEST_VERBOSE} ]] && myctestargs+=( --extra-verbose --output-on-failure )
+
+	set -- ctest -j "$(makeopts_jobs)" --test-load "$(makeopts_loadavg)" "${myctestargs[@]}" "$@"
+	echo "$@" >&2
+	if "$@" ; then
+		einfo "Tests succeeded."
+		popd > /dev/null || die
+		return 0
+	else
+		if [[ -n "${CMAKE_YES_I_WANT_TO_SEE_THE_TEST_LOG}" ]] ; then
+			# on request from Diego
+			eerror "Tests failed. Test log ${BUILD_DIR}/Testing/Temporary/LastTest.log follows:"
+			eerror "--START TEST LOG--------------------------------------------------------------"
+			cat "${BUILD_DIR}/Testing/Temporary/LastTest.log"
+			eerror "--END TEST LOG----------------------------------------------------------------"
+			die "Tests failed."
+		else
+			die "Tests failed. When you file a bug, please attach the following file: \n\t${BUILD_DIR}/Testing/Temporary/LastTest.log"
+		fi
+
+		# die might not die due to nonfatal
+		popd > /dev/null || die
+		return 1
+	fi
+}
+
+# @FUNCTION: cmake-utils_src_install
+# @DESCRIPTION:
+# Function for installing the package. Automatically detects the build type.
+cmake-utils_src_install() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	_cmake_check_build_dir
+	pushd "${BUILD_DIR}" > /dev/null || die
+	DESTDIR="${D}" ${CMAKE_MAKEFILE_GENERATOR} install "$@" || die "died running ${CMAKE_MAKEFILE_GENERATOR} install"
+	popd > /dev/null || die
+
+	pushd "${S}" > /dev/null || die
+	einstalldocs
+	popd > /dev/null || die
+}
+
+fi