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335 lines
10 KiB
335 lines
10 KiB
# Copyright 2021-2024 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: qt6-build.eclass
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# @MAINTAINER:
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# qt@gentoo.org
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# @SUPPORTED_EAPIS: 8
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# @PROVIDES: cmake
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# @BLURB: Eclass for Qt6 split ebuilds.
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# @DESCRIPTION:
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# This eclass contains various functions that are used when building Qt6.
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case ${EAPI} in
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8) ;;
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*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
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esac
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if [[ -z ${_QT6_BUILD_ECLASS} ]]; then
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_QT6_BUILD_ECLASS=1
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[[ ${CATEGORY} != dev-qt ]] &&
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die "${ECLASS} is only to be used for building Qt6"
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inherit cmake flag-o-matic toolchain-funcs
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# @ECLASS_VARIABLE: QT6_BUILD_TYPE
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# @DESCRIPTION:
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# Read only variable set based on PV to one of:
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# - release: official 6.x.x releases
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# - pre-release: development 6.x.x_rc/beta/alpha releases
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# - live: *.9999 (dev branch), 6.x.9999 (stable branch)
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# @ECLASS_VARIABLE: QT6_MODULE
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# @PRE_INHERIT
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# @DESCRIPTION:
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# The upstream name of the module this package belongs to.
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# Used for SRC_URI and EGIT_REPO_URI.
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: "${QT6_MODULE:=${PN}}"
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# @ECLASS_VARIABLE: QT6_RESTRICT_TESTS
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# @DEFAULT_UNSET
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# @PRE_INHERIT
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# @DESCRIPTION:
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# If set to a non-empty value, will not add IUSE="test" and set
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# RESTRICT="test" instead. Primarily intended for ebuilds where
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# running tests is unmaintained (or missing) rather than just
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# temporarily restricted not to have a broken USE (bug #930266).
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if [[ ${PV} == *.9999 ]]; then
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inherit git-r3
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EGIT_REPO_URI=(
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"https://code.qt.io/qt/${QT6_MODULE}.git"
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"https://github.com/qt/${QT6_MODULE}.git"
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)
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QT6_BUILD_TYPE=live
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EGIT_BRANCH=dev
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[[ ${PV} == 6.*.9999 ]] && EGIT_BRANCH=${PV%.9999}
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else
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QT6_BUILD_TYPE=release
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_QT6_SRC=official
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if [[ ${PV} == *_@(alpha|beta|rc)* ]]; then
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QT6_BUILD_TYPE=pre-release
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_QT6_SRC=development
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fi
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_QT6_P=${QT6_MODULE}-everywhere-src-${PV/_/-}
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SRC_URI="https://download.qt.io/${_QT6_SRC}_releases/qt/${PV%.*}/${PV/_/-}/submodules/${_QT6_P}.tar.xz"
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S=${WORKDIR}/${_QT6_P}
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unset _QT6_P _QT6_SRC
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fi
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readonly QT6_BUILD_TYPE
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HOMEPAGE="https://www.qt.io/"
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LICENSE="|| ( GPL-2 GPL-3 LGPL-3 ) FDL-1.3"
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SLOT=6/${PV%%_*}
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if [[ ${QT6_RESTRICT_TESTS} ]]; then
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RESTRICT="test"
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else
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IUSE="test"
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RESTRICT="!test? ( test )"
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fi
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BDEPEND="
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dev-lang/perl
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virtual/pkgconfig
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"
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###### Phase functions ######
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# @FUNCTION: qt6-build_src_unpack
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# @DESCRIPTION:
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# Run git-r3_src_unpack if needed (live), then default to unpack
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# e.g. patchsets in live ebuilds.
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qt6-build_src_unpack() {
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[[ ${QT6_BUILD_TYPE} == live ]] && git-r3_src_unpack
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default
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}
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# @FUNCTION: qt6-build_src_prepare
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# @DESCRIPTION:
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# Run cmake_src_prepare, prepare the environment (such as set
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# QT6_PREFIX, QT6_LIBDIR, and others), and handle anything else
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# generic as needed.
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qt6-build_src_prepare() {
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cmake_src_prepare
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if [[ -e CMakeLists.txt ]]; then
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# throw an error rather than skip if *required* conditions are not met
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sed -e '/message(NOTICE.*Skipping/s/NOTICE/FATAL_ERROR/' \
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-i CMakeLists.txt || die
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fi
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if in_iuse test && use test && [[ -e tests/auto/CMakeLists.txt ]]; then
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# .cmake files tests causing a self-dependency in many modules,
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# and that sometimes install additional test junk
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sed -i '/add_subdirectory(cmake)/d' tests/auto/CMakeLists.txt || die
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fi
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_qt6-build_prepare_env
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_qt6-build_sanitize_cpu_flags
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# LTO cause test failures in several components (e.g. qtcharts,
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# multimedia, scxml, wayland, webchannel, ...).
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#
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# Exact extent/causes unknown, but for some related-sounding bugs:
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# https://bugreports.qt.io/browse/QTBUG-112332
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# https://bugreports.qt.io/browse/QTBUG-115731
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#
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# Does not manifest itself with clang:16 (did with gcc-13.2.0), but
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# still assumed to be generally unsafe either way in current state.
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in_iuse custom-cflags && use custom-cflags || filter-lto
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}
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# @FUNCTION: qt6-build_src_configure
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# @DESCRIPTION:
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# Run cmake_src_configure and handle anything else generic as needed.
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qt6-build_src_configure() {
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if [[ ${PN} == qttranslations ]]; then
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# does not compile anything, further options would be unrecognized
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cmake_src_configure
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return
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fi
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local defaultcmakeargs=(
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# see _qt6-build_create_user_facing_links
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-DINSTALL_PUBLICBINDIR="${QT6_PREFIX}"/bin
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# note that if qtbase was built with tests, this is default ON
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-DQT_BUILD_TESTS=$(in_iuse test && use test && echo ON || echo OFF)
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# avoid appending -O2 after user's C(XX)FLAGS (bug #911822)
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-DQT_USE_DEFAULT_CMAKE_OPTIMIZATION_FLAGS=ON
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)
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if [[ ${mycmakeargs@a} == *a* ]]; then
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local mycmakeargs=("${defaultcmakeargs[@]}" "${mycmakeargs[@]}")
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else
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local mycmakeargs=("${defaultcmakeargs[@]}")
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fi
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cmake_src_configure
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}
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# @FUNCTION: qt6-build_src_test
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# @USAGE: [<cmake_src_test argument>...]
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# @DESCRIPTION:
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# Run cmake_src_test and handle anything else generic as-needed.
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qt6-build_src_test() {
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local -x QML_IMPORT_PATH=${BUILD_DIR}${QT6_QMLDIR#"${QT6_PREFIX}"}
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local -x QTEST_FUNCTION_TIMEOUT=900000 #914737
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local -x QT_QPA_PLATFORM=offscreen
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# TODO?: CMAKE_SKIP_TESTS skips a whole group of tests and, when
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# only want to skip a sepcific sub-test, the BLACKLIST files
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# could potentially be modified by implementing a QT6_SKIP_TESTS
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cmake_src_test "${@}"
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}
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# @FUNCTION: qt6-build_src_install
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# @DESCRIPTION:
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# Run cmake_src_install and handle anything else generic as needed.
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qt6-build_src_install() {
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cmake_src_install
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_qt6-build_create_user_facing_links
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# hack: trim typical junk with currently no known "proper" way
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# to avoid that primarily happens with tests (e.g. qt5compat and
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# qtsvg tests, but qtbase[gui,-test] currently does some too)
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rm -rf -- "${D}${QT6_PREFIX}"/tests \
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"${D}${QT6_LIBDIR}/objects-${CMAKE_BUILD_TYPE}" || die
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}
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###### Public helpers ######
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# @FUNCTION: qt_feature
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# @USAGE: <flag> [feature]
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# @DESCRIPTION:
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# <flag> is the name of a flag in IUSE.
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qt_feature() {
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[[ ${#} -ge 1 ]] || die "${FUNCNAME}() requires at least one argument"
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echo "-DQT_FEATURE_${2:-${1}}=$(usex ${1} ON OFF)"
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}
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###### Internal functions ######
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# @FUNCTION: _qt6-build_create_user_facing_links
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# @INTERNAL
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# @DESCRIPTION:
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# Create links for user facing tools (bug #863395) as suggested in:
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# https://doc.qt.io/qt-6/packaging-recommendations.html
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_qt6-build_create_user_facing_links() {
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# user_facing_tool_links.txt is always created (except for qttranslations)
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# even if no links (empty), if missing will assume that it is an error
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[[ ${PN} == qttranslations ]] && return
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# loop and match using paths (upstream suggests `xargs ln -s < ${links}`
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# but, for what it is worth, that will fail if paths have spaces)
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local link
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while IFS= read -r link; do
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if [[ -z ${link} ]]; then
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continue
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elif [[ ${link} =~ ^("${QT6_PREFIX}"/.+)\ ("${QT6_PREFIX}"/bin/.+) ]]
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then
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dosym -r "${BASH_REMATCH[1]#"${EPREFIX}"}" \
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"${BASH_REMATCH[2]#"${EPREFIX}"}"
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else
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die "unrecognized line '${link}' in '${links}'"
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fi
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done < "${BUILD_DIR}"/user_facing_tool_links.txt || die
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}
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# @FUNCTION: _qt6-build_prepare_env
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# @INTERNAL
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# @DESCRIPTION:
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# Prepares the environment for building Qt.
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_qt6-build_prepare_env() {
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# setup installation directories
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# note: keep paths in sync with qmake-utils.eclass
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readonly QT6_PREFIX=${EPREFIX}/usr
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readonly QT6_DATADIR=${QT6_PREFIX}/share/qt6
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readonly QT6_LIBDIR=${QT6_PREFIX}/$(get_libdir)
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readonly QT6_ARCHDATADIR=${QT6_LIBDIR}/qt6
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readonly QT6_BINDIR=${QT6_ARCHDATADIR}/bin
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readonly QT6_DOCDIR=${QT6_PREFIX}/share/qt6-doc
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readonly QT6_EXAMPLESDIR=${QT6_DATADIR}/examples
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readonly QT6_HEADERDIR=${QT6_PREFIX}/include/qt6
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readonly QT6_IMPORTDIR=${QT6_ARCHDATADIR}/imports
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readonly QT6_LIBEXECDIR=${QT6_ARCHDATADIR}/libexec
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readonly QT6_MKSPECSDIR=${QT6_ARCHDATADIR}/mkspecs
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readonly QT6_PLUGINDIR=${QT6_ARCHDATADIR}/plugins
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readonly QT6_QMLDIR=${QT6_ARCHDATADIR}/qml
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readonly QT6_SYSCONFDIR=${EPREFIX}/etc/xdg
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readonly QT6_TRANSLATIONDIR=${QT6_DATADIR}/translations
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}
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# @FUNCTION: _qt6-build_sanitize_cpu_flags
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# @INTERNAL
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# @DESCRIPTION:
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# Qt hardly support use of -mno-* or -march=native for unusual CPUs
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# (or VMs) that support incomplete x86-64 feature levels, and attempts
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# to allow this anyway has worked poorly. This instead tries to detect
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# unusual configurations and fallbacks to generic -march=x86-64* if so
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# (bug #898644,#908420,#913400,#933374).
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_qt6-build_sanitize_cpu_flags() {
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# less of an issue with non-amd64, will revisit only if needed
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use amd64 || return 0
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local cpuflags=(
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# list of checked cpu features by qtbase in configure.cmake
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aes avx avx2 avx512{bw,cd,dq,er,f,ifma,pf,vbmi,vbmi2,vl}
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f16c rdrnd rdseed sha sse2 sse3 sse4_1 sse4_2 ssse3 vaes
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# extras checked by qtbase's qsimd_p.h
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bmi bmi2 f16c fma lzcnt popcnt
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)
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# extras only needed by chromium in qtwebengine
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# (see also chromium's ebuild wrt bug #530248,#544702,#546984,#853646)
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[[ ${PN} == qtwebengine ]] && cpuflags+=(
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mmx xop
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# unclear if these two are really needed given (current) chromium
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# does not pass these flags, albeit it may side-disable something
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# else so keeping as a safety (like chromium's ebuild does)
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fma4 sse4a
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)
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# check if any known problematic -mno-* C(XX)FLAGS
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if ! is-flagq "@($(IFS='|'; echo "${cpuflags[*]/#/-mno-}"))"; then
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# check if qsimd_p.h (search for "enable all") will accept -march
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: "$($(tc-getCXX) -E -P ${CXXFLAGS} ${CPPFLAGS} - <<-EOF | tail -n 1
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#if (defined(__AVX2__) && (__BMI__ + __BMI2__ + __F16C__ + __FMA__ + __LZCNT__ + __POPCNT__) != 6) || \
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(defined(__AVX512F__) && (__AVX512BW__ + __AVX512CD__ + __AVX512DQ__ + __AVX512VL__) != 4)
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bad
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#endif
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EOF
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assert
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)"
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[[ ${_} == bad ]] || return 0 # *should* be fine as-is
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fi
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# determine highest(known) usable x86-64 feature level
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local march=$(
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$(tc-getCXX) -E -P ${CXXFLAGS} ${CPPFLAGS} - <<-EOF | tail -n 1
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default
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#if (__CRC32__ + __LAHF_SAHF__ + __POPCNT__ + __SSE3__ + __SSE4_1__ + __SSE4_2__ + __SSSE3__) == 7
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x86-64-v2
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# if (__AVX__ + __AVX2__ + __BMI__ + __BMI2__ + __F16C__ + __FMA__ + __LZCNT__ + __MOVBE__ + __XSAVE__) == 9
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x86-64-v3
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# if (__AVX512BW__ + __AVX512CD__ + __AVX512DQ__ + __AVX512F__ + __AVX512VL__ + __EVEX256__ + __EVEX512__) == 7
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x86-64-v4
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# endif
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# endif
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#endif
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EOF
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assert
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)
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filter-flags '-march=*' "${cpuflags[@]/#/-m}" "${cpuflags[@]/#/-mno-}"
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[[ ${march} == x86-64* ]] && append-flags $(test-flags-CXX -march=${march})
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einfo "C(XX)FLAGS were adjusted due to Qt limitations: ${CXXFLAGS}"
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}
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fi
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EXPORT_FUNCTIONS src_unpack src_prepare src_configure src_test src_install
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