dev-libs/klibc/klibc-2.0.4-r3.ebuild

   1 # Copyright 1999-2018 Gentoo Foundation
   2 # Distributed under the terms of the GNU General Public License v2
   3
   4 # Robin H. Johnson <robbat2@gentoo.org>, 12 Nov 2007:
   5 # This still needs major work.
   6 # But it is significently better than the previous version.
   7 # In that it will now build on biarch systems, such as ppc64-32ul.
   8
   9 # NOTES:
  10 # ======
  11 # We need to bring in the kernel sources seperately
  12 # Because they have to be configured in a way that differs from the copy in
  13 # /usr/src/. The sys-kernel/linux-headers are too stripped down to use
  14 # unfortunately.
  15 # This will be able to go away once the klibc author updates his code
  16 # to build again the headers provided by the kernel's 'headers_install' target.
  17
  18 EAPI=6
  19 K_TARBALL_SUFFIX="xz"
  20
  21 inherit eutils toolchain-funcs flag-o-matic
  22
  23 DESCRIPTION="A minimal libc subset for use with initramfs"
  24 HOMEPAGE="https://www.zytor.com/mailman/listinfo/klibc/ https://www.kernel.org/pub/linux/libs/klibc/"
  25 KV_MAJOR="4" KV_MINOR="x" KV_SUB="14"
  26 PKV_EXTRA=""
  27 if [[ ${PKV_EXTRA} ]]; then
  28         if [[ ${KV_MAJOR} == 2 ]]; then
  29                 PKV="${KV_MAJOR}.${KV_MINOR}.$((${KV_SUB}+1))-${PKV_EXTRA}"
  30         else
  31                 PKV="${KV_MAJOR}.$((${KV_SUB}+1))-${PKV_EXTRA}"
  32         fi
  33         PATCH_URI="https://www.kernel.org/pub/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/patch-${PKV}.${K_TARBALL_SUFFIX}"
  34 fi
  35 if [[ ${KV_MAJOR} == 2 ]]; then
  36         OKV="${KV_MAJOR}.${KV_MINOR}.${KV_SUB}"
  37 else
  38         OKV="${KV_MAJOR}.${KV_SUB}"
  39 fi
  40 KERNEL_URI="
  41         https://www.kernel.org/pub/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/linux-${OKV}.tar.${K_TARBALL_SUFFIX}
  42         https://www.kernel.org/pub/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/testing/linux-${OKV}.tar.${K_TARBALL_SUFFIX}"
  43 DEBIAN_PV=2.0.4
  44 DEBIAN_PR=9
  45 DEBIAN_A="${PN}_${DEBIAN_PV}-${DEBIAN_PR}.debian.tar.xz"
  46 SRC_URI="
  47         https://www.kernel.org/pub/linux/libs/klibc/${PV:0:3}/${P}.tar.${K_TARBALL_SUFFIX}
  48         mirror://debian/pool/main/k/klibc/${DEBIAN_A}
  49         ${PATCH_URI}
  50         ${KERNEL_URI}"
  51
  52 LICENSE="|| ( GPL-2 LGPL-2 )"
  53 KEYWORDS="~alpha amd64 ~arm ia64 -mips ~ppc ~ppc64 ~sparc x86"
  54 SLOT="0"
  55 IUSE="debug test custom-cflags"
  56
  57 RDEPEND="dev-lang/perl"
  58 DEPEND="${RDEPEND}
  59         sys-devel/bc"
  60
  61 KS="${WORKDIR}/linux-${OKV}"
  62
  63 # Klibc has no PT_GNU_STACK support, so scanning for execstacks is moot
  64 QA_EXECSTACK="*"
  65 # Do not strip
  66 RESTRICT="strip"
  67
  68 kernel_asm_arch() {
  69         a="${1:${ARCH}}"
  70         case ${a} in
  71                 # Merged arches
  72                 x86) echo i386 ;; # for build on x86 userspace & 64bit kernel
  73                 amd64) echo x86 ;;
  74                 ppc*) echo powerpc ;;
  75                 # Non-merged
  76                 alpha|arm|arm64|ia64|m68k|mips|sh|sparc*) echo ${1} ;;
  77                 *) die "TODO: Update the code for your asm-ARCH symlink" ;;
  78         esac
  79 }
  80
  81 # For a given Gentoo ARCH,
  82 # specify the kernel defconfig most relevant
  83 kernel_defconfig() {
  84         a="${1:${ARCH}}"
  85         # most, but not all arches have a sanely named defconfig
  86         case ${a} in
  87                 ppc64) echo ppc64_defconfig ;;
  88                 ppc) echo pmac32_defconfig ;;
  89                 sh*) die "TODO: Your arch is not supported by the klibc ebuild. Please suggest a defconfig in a bug." ;;
  90                 *) echo defconfig ;;
  91         esac
  92 }
  93
  94 src_unpack() {
  95         unpack linux-${OKV}.tar.${K_TARBALL_SUFFIX} ${P}.tar.${K_TARBALL_SUFFIX} ${DEBIAN_A}
  96 }
  97
  98 PATCHES=(
  99         # Build interp.o with EXTRA_KLIBCAFLAGS (.S source)
 100         "${FILESDIR}"/${PN}-1.4.11-interp-flags.patch
 101         # Fix usage of -s, bug #201006
 102         "${FILESDIR}"/klibc-1.5.7-strip-fix-dash-s.patch
 103         # The inline definition from sys/stat.h does not seem to get used
 104         # So just copy it to make this compile for now
 105         "${FILESDIR}"/klibc-2.0.2-mkfifo.patch
 106         # Newer kernels have some headers in the uapi dir
 107         "${FILESDIR}"/klibc-2.0.3-kernel-uapi.patch
 108 )
 109
 110 src_prepare() {
 111         [[ ${PKV} ]] && eapply "${DISTDIR}"/patch-${PKV}.${K_TARBALL_SUFFIX}
 112
 113         # Symlink /usr/src/linux to ${S}/linux
 114         ln -snf "${KS}" linux
 115         #ln -snf "/usr" linux
 116
 117         # Borrow the debian fixes too
 118         for p in $(<"${WORKDIR}"/debian/patches/series) ; do
 119                 PATCHES+=( "${WORKDIR}/debian/patches/${p}" )
 120         done
 121
 122         default
 123 }
 124
 125 # klibc has it's own ideas of arches
 126 # They reflect userspace strictly.
 127 # This functions maps from a Gentoo ARCH, to an arch that klibc expects
 128 # Look at klibc-${S}/usr/klibc/arch for a list of these arches
 129 klibc_arch() {
 130         a="${1:${ARCH}}"
 131         case ${a} in
 132                 amd64) echo x86_64;;
 133                 mips) die 'TODO: Use the $ABI' ;;
 134                 x86) echo i386;;
 135                 *) echo ${a} ;;
 136         esac
 137 }
 138
 139 src_compile() {
 140         local myargs="all"
 141         local myARCH="${ARCH}" myABI="${ABI}"
 142         # TODO: For cross-compiling
 143         # You should set ARCH and ABI here
 144         CC="$(tc-getCC)"
 145         LD="$(tc-getLD)"
 146         HOSTCC="$(tc-getBUILD_CC)"
 147         HOSTLD="$(tc-getBUILD_LD)"
 148         KLIBCARCH="$(klibc_arch ${ARCH})"
 149         KLIBCASMARCH="$(kernel_asm_arch ${ARCH})"
 150         libdir="$(get_libdir)"
 151         # This should be the defconfig corresponding to your userspace!
 152         # NOT your kernel. PPC64-32ul would choose 'ppc' for example.
 153         defconfig=$(kernel_defconfig ${ARCH})
 154         unset ABI ARCH # Unset these, because they interfere
 155         unset KBUILD_OUTPUT # we are using a private copy
 156
 157         cd "${KS}"
 158         emake ${defconfig} CC="${CC}" HOSTCC="${HOSTCC}" ARCH="${KLIBCASMARCH}" || die "No defconfig"
 159         if [[ "${KLIBCARCH/arm}" != "${KLIBCARCH}" ]] && \
 160            [[ "${CHOST/eabi}" != "${CHOST}" ]]; then
 161                 # The delete and insert are seperate statements
 162                 # so that they are reliably used.
 163                 sed -i \
 164                 -e '/CONFIG_AEABI/d' \
 165                 -e '1iCONFIG_AEABI=y' \
 166                 -e '/CONFIG_OABI_COMPAT/d' \
 167                 -e '1iCONFIG_OABI_COMPAT=y' \
 168                 -e '1iCONFIG_ARM_UNWIND=y' \
 169                 "${KS}"/.config \
 170                 "${S}"/defconfig
 171         fi
 172         emake prepare CC="${CC}" HOSTCC="${HOSTCC}" ARCH="${KLIBCASMARCH}" || die "Failed to prepare kernel sources for header usage"
 173
 174         cd "${S}"
 175
 176         use debug && myargs="${myargs} V=1"
 177         use test && myargs="${myargs} test"
 178         append-ldflags -z noexecstack
 179         append-flags -nostdlib
 180
 181         # Parallel build intermittantly fails when doing `LIST usr/klibc/syscalls/klib.list'
 182         emake -j1 \
 183                 EXTRA_KLIBCAFLAGS="-Wa,--noexecstack" \
 184                 EXTRA_KLIBCLDFLAGS="-z noexecstack" \
 185                 HOSTLDFLAGS="-z noexecstack" \
 186                 KLIBCOPTFLAGS='-nostdlib' \
 187                 HOSTCC="${HOSTCC}" CC="${CC}" \
 188                 HOSTLD="${HOSTLD}" LD="${LD}" \
 189                 INSTALLDIR="/usr/${libdir}/klibc" \
 190                 KLIBCARCH=${KLIBCARCH} \
 191                 KLIBCASMARCH=${KLIBCASMARCH} \
 192                 SHLIBDIR="/${libdir}" \
 193                 libdir="/usr/${libdir}" \
 194                 mandir="/usr/share/man" \
 195                 T="${T}" \
 196                 $(use custom-cflags || echo SKIP_)HOSTCFLAGS="${CFLAGS}" \
 197                 $(use custom-cflags || echo SKIP_)HOSTLDFLAGS="${LDFLAGS}" \
 198                 $(use custom-cflags || echo SKIP_)KLIBCOPTFLAGS="${CFLAGS}" \
 199                 ${myargs} || die "Compile failed!"
 200
 201                 #SHLIBDIR="/${libdir}" \
 202
 203         ARCH="${myARCH}" ABI="${myABI}"
 204 }
 205
 206 src_install() {
 207         local myargs
 208         local myARCH="${ARCH}" myABI="${ABI}"
 209         # TODO: For cross-compiling
 210         # You should set ARCH and ABI here
 211         CC="$(tc-getCC)"
 212         HOSTCC="$(tc-getBUILD_CC)"
 213         KLIBCARCH="$(klibc_arch ${ARCH})"
 214         KLIBCASMARCH="$(kernel_asm_arch ${ARCH})"
 215         libdir="$(get_libdir)"
 216         # This should be the defconfig corresponding to your userspace!
 217         # NOT your kernel. PPC64-32ul would choose 'ppc' for example.
 218         defconfig=$(kernel_defconfig ${ARCH})
 219
 220         use debug && myargs="${myargs} V=1"
 221
 222         local klibc_prefix
 223         if tc-is-cross-compiler ; then
 224                 klibc_prefix=$("${S}/klcc/${KLIBCARCH}-klcc" -print-klibc-prefix)
 225         else
 226                 klibc_prefix=$("${S}/klcc/klcc" -print-klibc-prefix)
 227         fi
 228
 229         unset ABI ARCH # Unset these, because they interfere
 230         unset KBUILD_OUTPUT # we are using a private copy
 231
 232         emake \
 233                 EXTRA_KLIBCAFLAGS="-Wa,--noexecstack" \
 234                 EXTRA_KLIBCLDFLAGS="-z noexecstack" \
 235                 HOSTLDFLAGS="-z noexecstack" \
 236                 KLIBCOPTFLAGS='-nostdlib' \
 237                 HOSTCC="${HOSTCC}" CC="${CC}" \
 238                 HOSTLD="${HOSTLD}" LD="${LD}" \
 239                 INSTALLDIR="/usr/${libdir}/klibc" \
 240                 INSTALLROOT="${D}" \
 241                 KLIBCARCH=${KLIBCARCH} \
 242                 KLIBCASMARCH=${KLIBCASMARCH} \
 243                 SHLIBDIR="/${libdir}" \
 244                 libdir="/usr/${libdir}" \
 245                 mandir="/usr/share/man" \
 246                 T="${T}" \
 247                 $(use custom-cflags || echo SKIP_)HOSTCFLAGS="${CFLAGS}" \
 248                 $(use custom-cflags || echo SKIP_)HOSTLDFLAGS="${LDFLAGS}" \
 249                 $(use custom-cflags || echo SKIP_)KLIBCOPTFLAGS="${CFLAGS}" \
 250                 ${myargs} \
 251                 install || die "Install failed!"
 252
 253                 #SHLIBDIR="/${libdir}" \
 254
 255         # klibc doesn't support prelinking, so we need to mask it
 256         cat > "${T}/70klibc" <<-EOF
 257                 PRELINK_PATH_MASK="/usr/${libdir}/klibc"
 258         EOF
 259
 260         doenvd "${T}"/70klibc
 261
 262         # Fix the permissions (bug #178053) on /usr/${libdir}/klibc/include
 263         # Actually I have no idea, why the includes have those weird-ass permissions
 264         # on a particular system, might be due to inherited permissions from parent
 265         # directory
 266         # NOTE: This totally violates sandbox <asturm@gentoo.org>
 267         # find "${D}"/usr/${libdir}/klibc/include | xargs chmod o+rX
 268         find "${D}"/usr/${libdir}/klibc/include -type f \
 269                 \( -name '.install' -o -name '..install.cmd' \) -delete || die
 270
 271         # Hardlinks becoming copies
 272         for x in gunzip zcat ; do
 273                 rm -f "${D}/${klibc_prefix}/bin/${x}"
 274                 dosym gzip "${klibc_prefix}/bin/${x}"
 275         done
 276
 277         # Restore now, so we can use the tc- functions
 278         ARCH="${myARCH}" ABI="${myABI}"
 279         if ! tc-is-cross-compiler ; then
 280                 cd "${S}"
 281                 insinto /usr/share/aclocal
 282                 doins contrib/klibc.m4
 283
 284                 dodoc README usr/klibc/CAVEATS
 285                 docinto gzip; dodoc usr/gzip/README
 286         fi
 287
 288         # Fix up the symlink
 289         # Mainly for merged arches
 290         linkname="${D}/usr/${libdir}/klibc/include/asm"
 291         if [ -L "${linkname}" ] && [ ! -e "${linkname}" ] ; then
 292                 ln -snf asm-${KLIBCASMARCH} "${linkname}"
 293         fi
 294 }
 295
 296 src_test() {
 297         if ! tc-is-cross-compiler ; then
 298                 cd "${S}"/usr/klibc/tests
 299                 ALL_TESTS="$(ls *.c |sed 's,\.c$,,g')"
 300                 BROKEN_TESTS="fcntl fnmatch testrand48"
 301                 failed=0
 302                 for t in $ALL_TESTS ; do
 303                         if has $t $BROKEN_TESTS ; then
 304                                 echo "=== $t SKIP"
 305                         else
 306                                 echo -n "=== $t "
 307                                 ./$t </dev/null >/dev/null
 308                                 rc=$?
 309                                 if [ $rc -eq 0 ]; then
 310                                         echo PASS
 311                                 else
 312                                         echo FAIL
 313                                         failed=1
 314                                 fi
 315                         fi
 316                 done
 317                 [ $failed -ne 0 ] && die "Some tests failed."
 318         fi
 319 }