This converts installation paths prefixed with EROOT or ED to have
a leading slash, switches DEPEND to BDEPEND for EAPI 7 so tools are
installed in BROOT and natively executable, and makes eapply_user
the default src_prepare behavior for EAPIs since 6.

It also drops the binutils build-time dependency since it was added
in the original kernel.eclass implementation ~20 years ago to
enforce a minimum version to avoid old assembly bugs.  All affected
versions are long gone, and it isn't required to install sources
anyway, so skip building the unused binutils dependency.

Signed-off-by: David Michael <fedora....@gmail.com>
---

Hi,

Can the kernel eclass support EAPI 7 now?  It would help auditing
dependencies to eventually support BDEPEND properly in the ebuilds using
the eclass.

The patch also corrects some whitespace issues that my editor was
highlighting, like extra end-of-line space or random embedded tabs.  I
could drop those changes if needed.

Thanks.

David

 eclass/kernel-2.eclass | 67 +++++++++++++++++++-----------------------
 1 file changed, 31 insertions(+), 36 deletions(-)

diff --git a/eclass/kernel-2.eclass b/eclass/kernel-2.eclass
index dccd39ec8f2..12ab19baee7 100644
--- a/eclass/kernel-2.eclass
+++ b/eclass/kernel-2.eclass
@@ -1,4 +1,4 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 # @ECLASS: kernel-2.eclass
@@ -8,7 +8,7 @@
 # John Mylchreest <jo...@gentoo.org>
 # Mike Pagano <mpag...@gentoo.org>
 # <so many, many others, please add yourself>
-# @SUPPORTED_EAPIS: 2 3 4 5 6
+# @SUPPORTED_EAPIS: 2 3 4 5 6 7
 # @BLURB: Eclass for kernel packages
 # @DESCRIPTION:
 # This is the kernel.eclass rewrite for a clean base regarding the 2.6
@@ -28,7 +28,7 @@
 # @ECLASS-VARIABLE:  K_NODRYRUN
 # @DEFAULT_UNSET
 # @DESCRIPTION:
-# if this is set then patch --dry-run will not 
+# if this is set then patch --dry-run will not
 # be run. Certain patches will fail with this parameter
 # See bug #507656
 
@@ -198,11 +198,11 @@
 # If you do change them, there is a chance that we will not fix resulting bugs;
 # that of course does not mean we're not willing to help.
 
-inherit toolchain-funcs
+inherit estack toolchain-funcs
 [[ ${EAPI:-0} == [012345] ]] && inherit epatch
-[[ ${EAPI:-0} == [0123456] ]] && inherit estack eapi7-ver
+[[ ${EAPI:-0} == [0123456] ]] && inherit eapi7-ver
 case ${EAPI:-0} in
-       2|3|4|5|6)
+       2|3|4|5|6|7)
                EXPORT_FUNCTIONS src_{unpack,prepare,compile,install,test} \
                        pkg_{setup,preinst,postinst,postrm} ;;
        *) die "${ECLASS}: EAPI ${EAPI} not supported" ;;
@@ -314,7 +314,6 @@ handle_genpatches() {
 # - KV: Kernel Version (2.6.0-gentoo/2.6.0-test11-gentoo-r1)
 # - EXTRAVERSION: The additional version appended to OKV (-gentoo/-gentoo-r1)
 detect_version() {
-
        # We've already run, so nothing to do here.
        [[ -n ${KV_FULL} ]] && return 0
 
@@ -540,7 +539,6 @@ detect_version() {
                        
UNIPATCH_LIST_DEFAULT="${DISTDIR}/patch-${KV_MAJOR}.${KV_PATCH}${RELEASE/-git*}.xz
 ${DISTDIR}/patch-${KV_MAJOR}.${KV_PATCH}${RELEASE}.xz"
                fi
 
-
        fi
 
        debug-print-kernel2-variables
@@ -600,10 +598,8 @@ kernel_is_2_6() {
 
 # Capture the sources type and set DEPENDs
 if [[ ${ETYPE} == sources ]]; then
-       DEPEND="!build? (
-               sys-apps/sed
-               >=sys-devel/binutils-2.11.90.0.31
-       )"
+       [[ ${EAPI} == [0-6] ]] && DEPEND="!build? ( sys-apps/sed )" ||
+       BDEPEND="!build? ( sys-apps/sed )"
        RDEPEND="!build? (
                dev-lang/perl
                sys-devel/bc
@@ -638,7 +634,8 @@ if [[ ${ETYPE} == sources ]]; then
                        # tree has been dropped from the kernel.
                        kernel_is lt 4 14 && LICENSE+=" !deblob? ( 
linux-firmware )"
 
-                       DEPEND+=" deblob? ( ${PYTHON_DEPS} )"
+                       [[ ${EAPI} == [0-6] ]] && DEPEND+=" deblob? ( 
${PYTHON_DEPS} )" ||
+                       BDEPEND+=" deblob? ( ${PYTHON_DEPS} )"
 
                        if [[ -n KV_MINOR ]]; then
                                DEBLOB_PV="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}"
@@ -826,7 +823,7 @@ unpack_set_extraversion() {
 
 unpack_fix_install_path() {
        cd "${S}"
-       sed     -i -e 's:#export\tINSTALL_PATH:export\tINSTALL_PATH:' Makefile
+       sed -i -e 's:#export\tINSTALL_PATH:export\tINSTALL_PATH:' Makefile
 }
 
 # Compile Functions
@@ -855,7 +852,7 @@ compile_headers() {
 
                # autoconf.h isnt generated unless it already exists. plus, we 
have
                # no guarantee that any headers are installed on the system...
-               [[ -f ${EROOT}usr/include/linux/autoconf.h ]] \
+               [[ -f ${EROOT%/}/usr/include/linux/autoconf.h ]] \
                        || touch include/linux/autoconf.h
 
                # if K_DEFCONFIG isn't set, force to "defconfig"
@@ -932,10 +929,10 @@ install_headers() {
        # of this crap anymore :D
        if kernel_is ge 2 6 18 ; then
                env_setup_xmakeopts
-               emake headers_install INSTALL_HDR_PATH="${ED}"${ddir}/.. 
${xmakeopts} || die
+               emake headers_install INSTALL_HDR_PATH="${ED%/}"${ddir}/.. 
${xmakeopts} || die
 
                # let other packages install some of these headers
-               rm -rf "${ED}"${ddir}/scsi || die #glibc/uclibc/etc...
+               rm -rf "${ED%/}"${ddir}/scsi || die #glibc/uclibc/etc...
                return 0
        fi
 
@@ -943,15 +940,15 @@ install_headers() {
        # $S values where the cmdline to cp is too long
        pushd "${S}" >/dev/null
        dodir ${ddir}/linux
-       cp -pPR "${S}"/include/linux "${ED}"${ddir}/ || die
-       rm -rf "${ED}"${ddir}/linux/modules || die
+       cp -pPR "${S}"/include/linux "${ED%/}"${ddir}/ || die
+       rm -rf "${ED%/}"${ddir}/linux/modules || die
 
        dodir ${ddir}/asm
-       cp -pPR "${S}"/include/asm/* "${ED}"${ddir}/asm || die
+       cp -pPR "${S}"/include/asm/* "${ED%/}"${ddir}/asm || die
 
        if kernel_is 2 6 ; then
                dodir ${ddir}/asm-generic
-               cp -pPR "${S}"/include/asm-generic/* "${ED}"${ddir}/asm-generic 
|| die
+               cp -pPR "${S}"/include/asm-generic/* 
"${ED%/}"${ddir}/asm-generic || die
        fi
 
        # clean up
@@ -983,7 +980,7 @@ install_sources() {
                done
        fi
 
-       mv "${WORKDIR}"/linux* "${ED}"usr/src || die
+       mv "${WORKDIR}"/linux* "${ED%/}"/usr/src || die
 
        if [[ -n "${UNIPATCH_DOCS}" ]] ; then
                for i in ${UNIPATCH_DOCS}; do
@@ -1025,19 +1022,19 @@ postinst_sources() {
 
        # if we are to forcably symlink, delete it if it already exists first.
        if [[ ${K_SYMLINK} -gt 0 ]]; then
-               [[ -h ${EROOT}usr/src/linux ]] && { rm "${EROOT}"usr/src/linux 
|| die; }
+               [[ -h ${EROOT%/}/usr/src/linux ]] && { rm 
"${EROOT%/}"/usr/src/linux || die; }
                MAKELINK=1
        fi
 
        # if the link doesnt exist, lets create it
-       [[ ! -h ${EROOT}usr/src/linux ]] && MAKELINK=1
+       [[ ! -h ${EROOT%/}/usr/src/linux ]] && MAKELINK=1
 
        if [[ ${MAKELINK} == 1 ]]; then
-               ln -sf linux-${KV_FULL} "${EROOT}"usr/src/linux || die
+               ln -sf linux-${KV_FULL} "${EROOT%/}"/usr/src/linux || die
        fi
 
        # Don't forget to make directory for sysfs
-       [[ ! -d ${EROOT}sys ]] && kernel_is 2 6 && { mkdir "${EROOT}"sys || die 
; }
+       [[ ! -d ${EROOT%/}/sys ]] && kernel_is 2 6 && { mkdir "${EROOT%/}"/sys 
|| die ; }
 
        echo
        elog "If you are upgrading from a previous kernel, you may be 
interested"
@@ -1048,13 +1045,13 @@ postinst_sources() {
        # if K_EXTRAEINFO is set then lets display it now
        if [[ -n ${K_EXTRAEINFO} ]]; then
                echo ${K_EXTRAEINFO} | fmt |
-               while read -s ELINE; do einfo "${ELINE}"; done
+               while read -s ELINE; do einfo "${ELINE}"; done
        fi
 
        # if K_EXTRAELOG is set then lets display it now
        if [[ -n ${K_EXTRAELOG} ]]; then
                echo ${K_EXTRAELOG} | fmt |
-               while read -s ELINE; do elog "${ELINE}"; done
+               while read -s ELINE; do elog "${ELINE}"; done
        fi
 
        # if K_EXTRAEWARN is set then lets display it now
@@ -1242,7 +1239,7 @@ unipatch() {
                        local GCC_MINOR_VER=$(gcc-minor-version)
 
                        # optimization patch for gcc < 8.X and kernel > 4.13
-                       if kernel_is ge 4 13 ; then 
+                       if kernel_is ge 4 13 ; then
                                if [[ ${GCC_MAJOR_VER} -lt 8 ]] && [[ 
${GCC_MAJOR_VER} -gt 4 ]]; then
                                        UNIPATCH_DROP+=" 
5011_enable-cpu-optimizations-for-gcc8.patch"
                                        UNIPATCH_DROP+=" 
5012_enable-cpu-optimizations-for-gcc91.patch"
@@ -1323,8 +1320,8 @@ unipatch() {
                        if [ -z "${PATCH_DEPTH}" ]; then PATCH_DEPTH=0; fi
 
                        
####################################################################
-                       # IMPORTANT: This code is to support kernels which 
cannot be       #
-                       # tested with the --dry-run parameter                   
                                                   #    
+                       # IMPORTANT: This code is to support kernels which 
cannot be       #
+                       # tested with the --dry-run parameter                   
           #
                        #                                                       
           #
                        # These patches contain a removal of a symlink, 
followed by        #
                        # addition of a file with the same name as the symlink 
in the      #
@@ -1443,7 +1440,6 @@ getfilevar() {
 # patchsets.
 
 detect_arch() {
-
        local ALL_ARCH LOOP_ARCH LOOP_ARCH_L COMPAT_URI i TC_ARCH_KERNEL
 
        # COMPAT_URI is the contents of ${ARCH}_URI
@@ -1554,13 +1550,12 @@ kernel-2_src_unpack() {
 # Apply any user patches
 
 kernel-2_src_prepare() {
-
        debug-print "Applying any user patches"
 
        # apply any user patches
        case ${EAPI:-0} in
                0|1|2|3|4|5) epatch_user ;;
-               6) eapply_user ;;
+               *) eapply_user ;;
        esac
 }
 
@@ -1660,11 +1655,11 @@ kernel-2_pkg_postrm() {
        [[ ${ETYPE} == headers ]] && return 0
 
        # If there isn't anything left behind, then don't complain.
-       [[ -e ${EROOT}usr/src/linux-${KV_FULL} ]] || return 0
+       [[ -e ${EROOT%/}/usr/src/linux-${KV_FULL} ]] || return 0
        echo
        ewarn "Note: Even though you have successfully unmerged "
        ewarn "your kernel package, directories in kernel source location: "
-       ewarn "${EROOT}usr/src/linux-${KV_FULL}"
+       ewarn "${EROOT%/}/usr/src/linux-${KV_FULL}"
        ewarn "with modified files will remain behind. By design, package 
managers"
        ewarn "will not remove these modified files and the directories they 
reside in."
        echo
-- 
2.26.2

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