gentoo-x86/eclass/cmake-utils.eclass

# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

# @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)
# @BLURB: common ebuild functions for cmake-based packages
# @DESCRIPTION:
# The cmake-utils eclass is base.eclass(5) wrapper that 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.

# @ECLASS-VARIABLE: WANT_CMAKE
# @DESCRIPTION:
# Specify if cmake-utils eclass should depend on cmake optionaly or not.
# This is usefull when only part of aplication is using cmake build system.
# Valid values are: always [default], optional (where the value is the useflag
# used for optionality)
WANT_CMAKE="${WANT_CMAKE:-always}"

# @ECLASS-VARIABLE: CMAKE_MIN_VERSION
# @DESCRIPTION:
# Specify the minimum required CMake version.
CMAKE_MIN_VERSION="${CMAKE_MIN_VERSION:-2.8.8}"

# @ECLASS-VARIABLE: CMAKE_REMOVE_MODULES_LIST
# @DESCRIPTION:
# Space-separated list of CMake modules that will be removed in $S during src_prepare,
# in order to force packages to use the system version.
CMAKE_REMOVE_MODULES_LIST="${CMAKE_REMOVE_MODULES_LIST:-FindBLAS FindLAPACK}"

# @ECLASS-VARIABLE: CMAKE_REMOVE_MODULES
# @DESCRIPTION:
# Do we want to remove anything? yes or whatever else for no
CMAKE_REMOVE_MODULES="${CMAKE_REMOVE_MODULES:-yes}"

# @ECLASS-VARIABLE: CMAKE_MAKEFILE_GENERATOR
# @DESCRIPTION:
# Specify a makefile generator to be used by cmake.
# At this point only "emake" and "ninja" are supported.
CMAKE_MAKEFILE_GENERATOR="${CMAKE_MAKEFILE_GENERATOR:-emake}"

CMAKEDEPEND=""
case ${WANT_CMAKE} in
        always)
                ;;
        *)
                IUSE+=" ${WANT_CMAKE}"
                CMAKEDEPEND+="${WANT_CMAKE}? ( "
                ;;
esac
inherit toolchain-funcs multilib flag-o-matic base

CMAKE_EXPF="src_compile src_test src_install"
case ${EAPI:-0} in
        2|3|4|5) CMAKE_EXPF+=" src_prepare src_configure" ;;
        1|0) ;;
        *) die "Unknown EAPI, Bug eclass maintainers." ;;
esac
EXPORT_FUNCTIONS ${CMAKE_EXPF}

case ${CMAKE_MAKEFILE_GENERATOR} in
        emake)
                CMAKEDEPEND+=" sys-devel/make"
                ;;
        ninja)
                CMAKEDEPEND+=" dev-util/ninja"
                ;;
        *)
                eerror "Unknown value for \${CMAKE_MAKEFILE_GENERATOR}"
                die "Value ${CMAKE_MAKEFILE_GENERATOR} is not supported"
                ;;
esac

if [[ ${PN} != cmake ]]; then
        CMAKEDEPEND+=" >=dev-util/cmake-${CMAKE_MIN_VERSION}"
fi

CMAKEDEPEND+=" userland_GNU? ( >=sys-apps/findutils-4.4.0 )"

[[ ${WANT_CMAKE} = always ]] || CMAKEDEPEND+=" )"

DEPEND="${CMAKEDEPEND}"
unset CMAKEDEPEND

# Internal functions used by cmake-utils_use_*
_use_me_now() {
        debug-print-function ${FUNCNAME} "$@"

        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
}
_use_me_now_inverted() {
        debug-print-function ${FUNCNAME} "$@"

        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
}

# @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 overriden, 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_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
# @DESCRIPTION:
# Set to enable in-source build.

# @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: PREFIX
# @DESCRIPTION:
# Eclass respects PREFIX variable, though it's not recommended way to set
# install/lib/bin prefixes.
# Use -DCMAKE_INSTALL_PREFIX=... CMake variable instead.
: ${PREFIX:=/usr}

# @ECLASS-VARIABLE: CMAKE_BINARY
# @DESCRIPTION:
# Eclass can use different cmake binary than the one provided in by system.
: ${CMAKE_BINARY:=cmake}

# Determine using IN or OUT source build
_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
                        eqawarn "The CMAKE_BUILD_DIR variable has been renamed to BUILD_DIR."
                        eqawarn "Please migrate the ebuild to use the new one."

                        # 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.
        CMAKE_BUILD_DIR=${BUILD_DIR}

        mkdir -p "${BUILD_DIR}"
        echo ">>> Working in BUILD_DIR: \"$BUILD_DIR\""
}

# Determine which generator to use
_generator_to_use() {
        local generator_name

        case ${CMAKE_MAKEFILE_GENERATOR} in
                ninja)
                        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-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() { _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() { _use_me_now ENABLE_ "$@" ; }

# @FUNCTION: cmake-utils_use_find_package
# @USAGE: <USE flag> [flag name]
# @DESCRIPTION:
# Based on use_enable. See ebuild(5).
#
# `cmake-utils_use_find_package foo FOO` echoes -DCMAKE_DISABLE_FIND_PACKAGE=OFF
# if foo is enabled and -DCMAKE_DISABLE_FIND_PACKAGE=ON if it is disabled.
# This can be used to make find_package optional (since cmake-2.8.6).
cmake-utils_use_find_package() { _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() { _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() { _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() { _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() { _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() { _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() { _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() { _use_me_now "" "$@" ; }

# Internal function for modifying hardcoded definitions.
# Removes dangerous definitions that override Gentoo settings.
_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)
        # TODO Add QA checker - inform when variable being checked for below is set in CMakeLists.txt
        find "${CMAKE_USE_DIR}" -name CMakeLists.txt \
                -exec sed -i -e '/^[[:space:]]*[sS][eE][tT][[:space:]]*([[:space:]]*CMAKE_BUILD_TYPE.*)/{s/^/#IGNORE /g}' {} + \
                -exec sed -i -e '/^[[:space:]]*[sS][eE][tT][[:space:]]*([[:space:]]*CMAKE_COLOR_MAKEFILE.*)/{s/^/#IGNORE /g}' {} + \
                -exec sed -i -e '/^[[:space:]]*[sS][eE][tT][[:space:]]*([[:space:]]*CMAKE_INSTALL_PREFIX.*)/{s/^/#IGNORE /g}' {} + \
                -exec sed -i -e '/^[[:space:]]*[sS][eE][tT][[:space:]]*([[:space:]]*CMAKE_VERBOSE_MAKEFILE.*)/{s/^/#IGNORE /g}' {} + \
                || die "${LINENO}: failed to disable hardcoded settings"

        # NOTE Append some useful summary here
        cat >> "${CMAKE_USE_DIR}"/CMakeLists.txt <<- _EOF_

                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_
}

enable_cmake-utils_src_prepare() {
        debug-print-function ${FUNCNAME} "$@"

        base_src_prepare
}

enable_cmake-utils_src_configure() {
        debug-print-function ${FUNCNAME} "$@"

        [[ "${CMAKE_REMOVE_MODULES}" == "yes" ]] && {
                local name
                for name in ${CMAKE_REMOVE_MODULES_LIST} ; do
                        find "${S}" -name ${name}.cmake -exec rm -v {} +
                done
        }

        _check_build_dir

        # 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.
        _modify-cmakelists

        # Fix xdg collision with sandbox
        export XDG_CONFIG_HOME="${T}"

        # @SEE CMAKE_BUILD_TYPE
        if [[ ${CMAKE_BUILD_TYPE} = Gentoo ]]; then
                # Handle release builds
                if ! has debug ${IUSE//+} || ! use debug; then
                        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_
                SET (CMAKE_AR $(type -P $(tc-getAR)) CACHE FILEPATH "Archive manager" FORCE)
                SET (CMAKE_ASM_COMPILE_OBJECT "<CMAKE_C_COMPILER> <DEFINES> ${CFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "ASM compile command" FORCE)
                SET (CMAKE_C_COMPILER $(type -P $(tc-getCC)) CACHE FILEPATH "C compiler" FORCE)
                SET (CMAKE_C_COMPILE_OBJECT "<CMAKE_C_COMPILER> <DEFINES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C compile command" FORCE)
                SET (CMAKE_CXX_COMPILER $(type -P $(tc-getCXX)) CACHE FILEPATH "C++ compiler" FORCE)
                SET (CMAKE_CXX_COMPILE_OBJECT "<CMAKE_CXX_COMPILER> <DEFINES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C++ compile command" FORCE)
                SET (CMAKE_RANLIB $(type -P $(tc-getRANLIB)) CACHE FILEPATH "Archive index generator" FORCE)
        _EOF_

        has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=

        if [[ ${EPREFIX} ]]; then
                cat >> "${build_rules}" <<- _EOF_
                        # 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 "${EPREFIX}${PREFIX}" CACHE STRING ""FORCE)
                        SET(CMAKE_SKIP_BUILD_RPATH OFF CACHE BOOL "" FORCE)
                        SET(CMAKE_SKIP_RPATH OFF CACHE BOOL "" FORCE)
                        SET(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE CACHE BOOL "")
                        SET(CMAKE_INSTALL_RPATH "${EPREFIX}${PREFIX}/lib;${EPREFIX}/usr/${CHOST}/lib/gcc;${EPREFIX}/usr/${CHOST}/lib;${EPREFIX}/usr/$(get_libdir);${EPREFIX}/$(get_libdir)" CACHE STRING "" FORCE)
                        SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE CACHE BOOL "" FORCE)
                        SET(CMAKE_INSTALL_NAME_DIR "${EPREFIX}${PREFIX}/lib" CACHE STRING "" 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_
                SET (LIB_SUFFIX ${libdir/lib} CACHE STRING "library path suffix" FORCE)
                SET (CMAKE_INSTALL_LIBDIR ${libdir} CACHE PATH "Output directory for libraries")
        _EOF_
        [[ "${NOCOLOR}" = true || "${NOCOLOR}" = yes ]] && echo 'SET (CMAKE_COLOR_MAKEFILE OFF CACHE BOOL "pretty colors during make" FORCE)' >> "${common_config}"

        # 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).
        if [[ $(declare -p mycmakeargs 2>&-) != "declare -a mycmakeargs="* ]]; then
                local mycmakeargs_local=(${mycmakeargs})
        else
                local mycmakeargs_local=("${mycmakeargs[@]}")
        fi

        # Common configure parameters (overridable)
        # NOTE CMAKE_BUILD_TYPE can be only overriden via CMAKE_BUILD_TYPE eclass variable
        # No -DCMAKE_BUILD_TYPE=xxx definitions will be in effect.
        local cmakeargs=(
                --no-warn-unused-cli
                -C "${common_config}"
                -G "$(_generator_to_use)"
                -DCMAKE_INSTALL_PREFIX="${EPREFIX}${PREFIX}"
                "${mycmakeargs_local[@]}"
                -DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}"
                -DCMAKE_INSTALL_DO_STRIP=OFF
                -DCMAKE_USER_MAKE_RULES_OVERRIDE="${build_rules}"
                "${MYCMAKEARGS}"
        )

        pushd "${BUILD_DIR}" > /dev/null
        debug-print "${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
}

enable_cmake-utils_src_compile() {
        debug-print-function ${FUNCNAME} "$@"

        has src_configure ${CMAKE_EXPF} || cmake-utils_src_configure
        cmake-utils_src_make "$@"
}

# @FUNCTION: ninja_src_make
# @INTERNAL
# @DESCRIPTION:
# Build the package using ninja generator
ninja_src_make() {
        debug-print-function ${FUNCNAME} "$@"

                [[ -e build.ninja ]] || die "Makefile not found. Error during configure stage."

                if [[ "${CMAKE_VERBOSE}" != "OFF" ]]; then
                # TODO: get load average from portage (-l option)
                ninja ${MAKEOPTS} -v "$@" || die
        else
                ninja "$@" || die
        fi
}

# @FUNCTION: make_src_make
# @INTERNAL
# @DESCRIPTION:
# Build the package using make generator
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 ${FUNCNAME} "$@"

        _check_build_dir
        pushd "${BUILD_DIR}" > /dev/null

        ${CMAKE_MAKEFILE_GENERATOR}_src_make $@

        popd > /dev/null
}

enable_cmake-utils_src_install() {
        debug-print-function ${FUNCNAME} "$@"

        _check_build_dir
        pushd "${BUILD_DIR}" > /dev/null

        DESTDIR="${D}" ${CMAKE_MAKEFILE_GENERATOR} install "$@" || die "died running ${CMAKE_MAKEFILE_GENERATOR} install"
        base_src_install_docs

        popd > /dev/null

        # Backward compatibility, for non-array variables
        if [[ -n "${DOCS}" ]] && [[ "$(declare -p DOCS 2>/dev/null 2>&1)" != "declare -a"* ]]; then
                dodoc ${DOCS} || die "dodoc failed"
        fi
        if [[ -n "${HTML_DOCS}" ]] && [[ "$(declare -p HTML_DOCS 2>/dev/null 2>&1)" != "declare -a"* ]]; then
                dohtml -r ${HTML_DOCS} || die "dohtml failed"
        fi
}

enable_cmake-utils_src_test() {
        debug-print-function ${FUNCNAME} "$@"

        _check_build_dir
        pushd "${BUILD_DIR}" > /dev/null
        [[ -e CTestTestfile.cmake ]] || { echo "No tests found. Skipping."; return 0 ; }

        [[ -n ${TEST_VERBOSE} ]] && myctestargs+=( --extra-verbose --output-on-failure )

        if ctest "${myctestargs[@]}" "$@" ; then
                einfo "Tests succeeded."
                popd > /dev/null
                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
                return 1
        fi
}

# @FUNCTION: cmake-utils_src_prepare
# @DESCRIPTION:
# Wrapper function around base_src_prepare, just to expand the eclass API.
cmake-utils_src_prepare() {
        _execute_optionaly "src_prepare" "$@"
}

# @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() {
        _execute_optionaly "src_configure" "$@"
}

# @FUNCTION: cmake-utils_src_compile
# @DESCRIPTION:
# General function for compiling with cmake. Default behaviour is to check for
# EAPI and respectively to configure as well or just compile.
# Automatically detects the build type. All arguments are passed to emake.
cmake-utils_src_compile() {
        _execute_optionaly "src_compile" "$@"
}

# @FUNCTION: cmake-utils_src_install
# @DESCRIPTION:
# Function for installing the package. Automatically detects the build type.
cmake-utils_src_install() {
        _execute_optionaly "src_install" "$@"
}

# @FUNCTION: cmake-utils_src_test
# @DESCRIPTION:
# Function for testing the package. Automatically detects the build type.
cmake-utils_src_test() {
        _execute_optionaly "src_test" "$@"
}

# Optionally executes phases based on WANT_CMAKE variable/USE flag.
_execute_optionaly() {
        local phase="$1" ; shift
        if [[ ${WANT_CMAKE} = always ]]; then
                enable_cmake-utils_${phase} "$@"
        else
                use ${WANT_CMAKE} && enable_cmake-utils_${phase} "$@"
        fi
}