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   1 # Copyright 1999-2018 Gentoo Foundation
   2 # Distributed under the terms of the GNU General Public License v2
   3
   4 # XXX: we need to review menu.lst vs grub.conf handling.  We've been converting
   5 #      all systems to grub.conf (and symlinking menu.lst to grub.conf), but
   6 #      we never updated any of the source code (it still all wants menu.lst),
   7 #      and there is no indication that upstream is making the transition.
   8
   9 # If you need to roll a new grub-static distfile, here is how.
  10 # - Robin H. Johnson <robbat2@gentoo.org> - 29 Nov 2010
  11 # FEATURES='-noauto -noinfo -nodoc -noman -splitdebug nostrip' \
  12 # USE='static -ncurses -netboot -custom-cflags' \
  13 # PORTAGE_COMPRESS=true GRUB_STATIC_PACKAGE_BUILDING=1 ebuild \
  14 # grub-${PVR}.ebuild clean package && \
  15 # qtbz2 -s -j ${PKGDIR}/${CAT}/${PF}.tbz2 && \
  16 # mv ${PF}.tar.bz2 ${DISTDIR}/grub-static-${PVR}.tar.bz2
  17
  18 EAPI="6"
  19
  20 inherit eutils mount-boot toolchain-funcs linux-info flag-o-matic autotools pax-utils
  21
  22 PATCHVER="1.15" # Should match the revision ideally
  23 DESCRIPTION="GNU GRUB Legacy boot loader"
  24 HOMEPAGE="https://www.gnu.org/software/grub/"
  25 SRC_URI="mirror://gentoo/${P}.tar.gz
  26         mirror://gnu-alpha/${PN}/${P}.tar.gz
  27         mirror://gentoo/splash.xpm.gz
  28         mirror://gentoo/${P}-patches-${PATCHVER}.tar.bz2
  29         https://dev.gentoo.org/~whissi/dist/${PN}/${P}-patches-${PATCHVER}.tar.bz2"
  30
  31 LICENSE="GPL-2"
  32 SLOT="0"
  33 KEYWORDS="amd64 x86 ~x86-fbsd"
  34 IUSE="custom-cflags ncurses netboot static"
  35
  36 LIB_DEPEND="ncurses? ( >=sys-libs/ncurses-5.9-r3:0[static-libs(+),abi_x86_32(-)] )"
  37 RDEPEND="!static? ( ${LIB_DEPEND//[static-libs(+),/=[} )"
  38 DEPEND="${RDEPEND}
  39         virtual/pkgconfig
  40         static? ( ${LIB_DEPEND} )"
  41 RDEPEND+=" !sys-boot/grub:2[-multislot]"
  42
  43 pkg_setup() {
  44         case $(tc-arch) in
  45         amd64) CONFIG_CHECK='~IA32_EMULATION' check_extra_config ;;
  46         esac
  47 }
  48
  49 src_prepare() {
  50         # Grub will not handle a kernel larger than EXTENDED_MEMSIZE Mb as
  51         # discovered in bug 160801. We can change this, however, using larger values
  52         # for this variable means that Grub needs more memory to run and boot. For a
  53         # kernel of size N, Grub needs (N+1)*2.  Advanced users should set a custom
  54         # value in make.conf, it is possible to make kernels ~16Mb in size, but it
  55         # needs the kitchen sink built-in.
  56         local t="custom"
  57         if [[ -z ${GRUB_MAX_KERNEL_SIZE} ]] ; then
  58                 case $(tc-arch) in
  59                 amd64) GRUB_MAX_KERNEL_SIZE=9 ;;
  60                 x86)   GRUB_MAX_KERNEL_SIZE=5 ;;
  61                 esac
  62                 t="default"
  63         fi
  64         einfo "Grub will support the ${t} maximum kernel size of ${GRUB_MAX_KERNEL_SIZE} Mb (GRUB_MAX_KERNEL_SIZE)"
  65
  66         sed -i \
  67                 -e "/^#define.*EXTENDED_MEMSIZE/s,3,${GRUB_MAX_KERNEL_SIZE},g" \
  68                 "${S}"/grub/asmstub.c \
  69                 || die
  70
  71         # gcc-6 and above doesnt have a '-nopie' option patched in, use upstream's -fno-pie
  72         if [[ tc-is-gcc && $(gcc-major-version) -gt 5 ]]; then
  73                 sed -i 's/-nopie/-fno-pie/' \
  74                         "${WORKDIR}"/patch/860_all_grub-0.97-pie-r1.patch \
  75                         || die
  76         fi
  77
  78         EPATCH_SUFFIX="patch" epatch "${WORKDIR}"/patch
  79         # bug 564890, 566638
  80         epatch "${FILESDIR}"/grub-0.97-Add-esp-to-list-of-clobbered-registers.patch
  81         epatch "${FILESDIR}"/grub-0.97-ncurses-pkgconfig.patch
  82
  83         eapply_user
  84
  85         rm -f "${S}"/aclocal.m4 # seems to keep bug 418287 away
  86         eautoreconf
  87 }
  88
  89 src_configure() {
  90         filter-flags -fPIE #168834
  91
  92         use amd64 && multilib_toolchain_setup x86
  93
  94         unset BLOCK_SIZE #73499
  95
  96         ### i686-specific code in the boot loader is a bad idea; disabling to ensure
  97         ### at least some compatibility if the hard drive is moved to an older or
  98         ### incompatible system.
  99
 100         # grub-0.95 added -fno-stack-protector detection, to disable ssp for stage2,
 101         # but the objcopy's (faulty) test fails if -fstack-protector is default.
 102         # create a cache telling configure that objcopy is ok, and add -C to econf
 103         # to make use of the cache.
 104         #
 105         # CFLAGS has to be undefined running econf, else -fno-stack-protector detection fails.
 106         # STAGE2_CFLAGS is not allowed to be used on emake command-line, it overwrites
 107         # -fno-stack-protector detected by configure, removed from netboot's emake.
 108         use custom-cflags || unset CFLAGS
 109
 110         tc-ld-disable-gold #439082 #466536 #526348
 111
 112         export grub_cv_prog_objcopy_absolute=yes #79734
 113         use static && append-ldflags -static
 114
 115         if use amd64 && use static ; then
 116                 if [[ -n ${GRUB_STATIC_PACKAGE_BUILDING} ]] ; then
 117                         eerror "You have set GRUB_STATIC_PACKAGE_BUILDING. This"
 118                         eerror "is specifically intended for building the tarballs for the"
 119                         eerror "grub-static package via USE='static -ncurses'."
 120                         eerror "All bets are now off."
 121                 fi
 122         fi
 123
 124         # build the net-bootable grub first, but only if "netboot" is set
 125         if use netboot ; then
 126                 mkdir -p "${WORKDIR}"/netboot
 127                 pushd "${WORKDIR}"/netboot >/dev/null
 128                 ECONF_SOURCE=${S} \
 129                 econf \
 130                         --libdir=/lib \
 131                         --datadir=/usr/lib/grub \
 132                         --exec-prefix=/ \
 133                         --disable-auto-linux-mem-opt \
 134                         --enable-diskless \
 135                         --enable-{3c{5{03,07,09,29,95},90x},cs89x0,davicom,depca,eepro{,100}} \
 136                         --enable-{epic100,exos205,ni5210,lance,ne2100,ni{50,65}10,natsemi} \
 137                         --enable-{ne,ns8390,wd,otulip,rtl8139,sis900,sk-g16,smc9000,tiara} \
 138                         --enable-{tulip,via-rhine,w89c840}
 139                 popd >/dev/null
 140         fi
 141
 142         # Now build the regular grub
 143         # Note that FFS and UFS2 support are broken for now - stage1_5 files too big
 144         econf \
 145                 --libdir=/lib \
 146                 --datadir=/usr/lib/grub \
 147                 --exec-prefix=/ \
 148                 --disable-auto-linux-mem-opt \
 149                 $(use_with ncurses curses)
 150
 151         # sanity check due to common failure
 152         use ncurses && ! grep -qs "HAVE_LIBCURSES.*1" config.h && die "USE=ncurses but curses not found"
 153 }
 154
 155 src_compile() {
 156         use netboot && emake -C "${WORKDIR}"/netboot w89c840_o_CFLAGS="-O"
 157         emake
 158 }
 159
 160 src_test() {
 161         # non-default block size also give false pass/fails.
 162         unset BLOCK_SIZE
 163         emake -j1 check
 164 }
 165
 166 src_install() {
 167         local _stage2_file="${S}/stage2/stage2"
 168         if [[ -f "${_stage2_file}" ]]; then
 169                 local _stage2_filesize=$(stat -c '%s' "${_stage2_file}" 2>/dev/null)
 170                 if [[ -z "${_stage2_filesize}" ]]; then
 171                         ewarn "Sanity check skipped -- 'stat' returned nothing"
 172                 elif [[ "${_stage2_filesize}" -gt 1000000 ]]; then
 173                         eerror "Sanity check failed: stage2 (${_stage2_file}) is larger than 1MB (${_stage2_filesize} bytes)!"
 174                         eerror "Please check your CFLAGS and/or file a bug report at https://bugs.gentoo.org."
 175                         die "stage2 sanity check failed"
 176                 else
 177                         einfo "stage2 sanity check passed"
 178                 fi
 179         else
 180                 ewarn "Sanity check skipped -- no stage2 found"
 181         fi
 182
 183         default
 184         if use netboot ; then
 185                 exeinto /usr/lib/grub/${CHOST}
 186                 doexe "${WORKDIR}"/netboot/stage2/{nbgrub,pxegrub}
 187                 newexe "${WORKDIR}"/netboot/stage2/stage2 stage2.netboot
 188         fi
 189
 190         pax-mark -m "${D}"/sbin/grub #330745
 191
 192         newdoc docs/menu.lst grub.conf.sample
 193         dodoc "${FILESDIR}"/grub.conf.gentoo
 194
 195         [[ -n ${GRUB_STATIC_PACKAGE_BUILDING} ]] && \
 196                 mv "${D}"/usr/share/doc/{${PF},grub-static-${PF/grub-}}
 197
 198         insinto /usr/share/grub
 199         doins "${DISTDIR}"/splash.xpm.gz
 200 }
 201
 202 setup_boot_dir() {
 203         local boot_dir=$1
 204         local dir=${boot_dir}
 205
 206         mkdir -p "${dir}"
 207         [[ ! -L ${dir}/boot ]] && ln -s . "${dir}/boot"
 208         dir="${dir}/grub"
 209         if [[ ! -e ${dir} ]] ; then
 210                 mkdir "${dir}" || die
 211         fi
 212
 213         # change menu.lst to grub.conf
 214         if [[ ! -e ${dir}/grub.conf ]] && [[ -e ${dir}/menu.lst ]] ; then
 215                 mv -f "${dir}"/menu.lst "${dir}"/grub.conf
 216                 ewarn "*** IMPORTANT NOTE: menu.lst has been renamed to grub.conf"
 217                 echo
 218         fi
 219
 220         if [[ ! -e ${dir}/menu.lst ]]; then
 221                 einfo "Linking from new grub.conf name to menu.lst"
 222                 ln -snf grub.conf "${dir}"/menu.lst
 223         fi
 224
 225         if [[ -e ${dir}/stage2 ]] ; then
 226                 mv "${dir}"/stage2{,.old}
 227                 ewarn "*** IMPORTANT NOTE: you must run grub and install"
 228                 ewarn "the new version's stage1 to your MBR.  Until you do,"
 229                 ewarn "stage1 and stage2 will still be the old version, but"
 230                 ewarn "later stages will be the new version, which could"
 231                 ewarn "cause problems such as an unbootable system."
 232                 ewarn
 233                 ewarn "This means you must use either grub-install or perform"
 234                 ewarn "root/setup manually."
 235                 ewarn
 236                 ewarn "For more help, see the wiki:"
 237                 ewarn "https://wiki.gentoo.org/wiki/GRUB"
 238                 echo
 239         fi
 240
 241         einfo "Copying files from /lib/grub and /usr/share/grub to ${dir}"
 242         for x in \
 243                 "${ROOT}"/lib*/grub/*/* \
 244                 "${ROOT}"/usr/share/grub/* ; do
 245                 [[ -f ${x} ]] && cp -p "${x}" "${dir}"/
 246         done
 247
 248         if [[ ! -e ${dir}/grub.conf ]] ; then
 249                 s="${ROOT}/usr/share/doc/${PF}/grub.conf.gentoo"
 250                 [[ -e "${s}" ]] && cat "${s}" >${dir}/grub.conf
 251                 [[ -e "${s}.gz" ]] && zcat "${s}.gz" >${dir}/grub.conf
 252                 [[ -e "${s}.bz2" ]] && bzcat "${s}.bz2" >${dir}/grub.conf
 253         fi
 254
 255         # Per bug 218599, we support grub.conf.install for users that want to run a
 256         # specific set of Grub setup commands rather than the default ones.
 257         grub_config=${dir}/grub.conf.install
 258         [[ -e ${grub_config} ]] || grub_config=${dir}/grub.conf
 259         if [[ -e ${grub_config} ]] ; then
 260                 egrep \
 261                         -v '^[[:space:]]*(#|$|default|fallback|initrd|password|splashimage|timeout|title)' \
 262                         "${grub_config}" | \
 263                 /sbin/grub --batch \
 264                         --device-map="${dir}"/device.map \
 265                         > /dev/null
 266         fi
 267
 268         # the grub default commands silently piss themselves if
 269         # the default file does not exist ahead of time
 270         if [[ ! -e ${dir}/default ]] ; then
 271                 grub-set-default --root-directory="${boot_dir}" default
 272         fi
 273         einfo "Grub has been installed to ${boot_dir} successfully."
 274 }
 275
 276 pkg_postinst() {
 277         mount-boot_mount_boot_partition
 278
 279         if [[ -n ${DONT_MOUNT_BOOT} ]]; then
 280                 elog "WARNING: you have DONT_MOUNT_BOOT in effect, so you must apply"
 281                 elog "the following instructions for your /boot!"
 282                 elog "Neglecting to do so may cause your system to fail to boot!"
 283                 elog
 284         else
 285                 setup_boot_dir "${ROOT}"/boot
 286                 # Trailing output because if this is run from pkg_postinst, it gets mixed into
 287                 # the other output.
 288                 einfo ""
 289         fi
 290         elog "To interactively install grub files to another device such as a USB"
 291         elog "stick, just run the following and specify the directory as prompted:"
 292         elog "   emerge --config =${PF}"
 293         elog "Alternately, you can export GRUB_ALT_INSTALLDIR=/path/to/use to tell"
 294         elog "grub where to install in a non-interactive way."
 295
 296         # needs to be after we call setup_boot_dir
 297         mount-boot_pkg_postinst
 298 }
 299
 300 pkg_config() {
 301         local dir
 302         if [ ! -d "${GRUB_ALT_INSTALLDIR}" ]; then
 303                 einfo "Enter the directory where you want to setup grub:"
 304                 read dir
 305         else
 306                 dir="${GRUB_ALT_INSTALLDIR}"
 307         fi
 308         setup_boot_dir "${dir}"
 309 }