commit:     63d949769e25176de0d879cbef2b7cd80348ad0f
Author:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
AuthorDate: Sun Oct 21 16:26:47 2018 +0000
Commit:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
CommitDate: Sun Oct 21 16:27:36 2018 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=63d94976

sys-devel/gdb: link against tinfow first, then tinfo. bug #669096

In bug #669096 gdb was directly linked both
to libtinfo.so.6 and libncursesw.so.6:
    $ lddtree /usr/bin/gdb
    /usr/bin/gdb (interpreter => /lib64/ld-linux-x86-64.so.2)
    libtinfo.so.6 => /lib64/libtinfo.so.6
    libncursesw.so.6 => /lib64/libncursesw.so.6
        libtinfow.so.6 => /lib64/libtinfow.so.6
    ...
and caused gdb to SIGSEGV at start.

Let's consistently link against *w libraries when both available.

Note: the fix on it's own is not enough:
- we don't pass include paths to ncursesw libraries
- libreadline.so.7 is still linked against libtinfo.so.6 in Gentoo
  and needs a separate fix.

But it's enough to make immediate SIGSEGV to go away.

Reported-by: Michał Górny
Bug: https://bugs.gentoo.org/669096
Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org>
Package-Manager: Portage-2.3.51, Repoman-2.3.11

 sys-devel/gdb/files/gdb-8.2-tinfow.patch |  44 ++++++
 sys-devel/gdb/gdb-8.2-r1.ebuild          | 261 +++++++++++++++++++++++++++++++
 2 files changed, 305 insertions(+)

diff --git a/sys-devel/gdb/files/gdb-8.2-tinfow.patch 
b/sys-devel/gdb/files/gdb-8.2-tinfow.patch
new file mode 100644
index 00000000000..48f6109664a
--- /dev/null
+++ b/sys-devel/gdb/files/gdb-8.2-tinfow.patch
@@ -0,0 +1,44 @@
+Try to link gdb against tinfow first, then tinfo.
+
+In bug #669096 gdb was directly linked both
+to libtinfo.so.6 and libncursesw.so.6:
+    $ lddtree /usr/bin/gdb
+    /usr/bin/gdb (interpreter => /lib64/ld-linux-x86-64.so.2)
+    libtinfo.so.6 => /lib64/libtinfo.so.6
+    libncursesw.so.6 => /lib64/libncursesw.so.6
+        libtinfow.so.6 => /lib64/libtinfow.so.6
+    ...
+and caused gdb to SIGSEGV at start.
+
+Let's consistently link against *w libraries.
+
+Note: the fix on it's own is not enough:
+- we don't pass include paths to ncursesw libraries
+- libreadline.so.7 is still linked against libtinfo.so.6 in Gentoo
+  and needs a separate fix.
+
+But it's enough to make immediate SIGSEGV to go away.
+
+Reported-by: Michał Górny
+Bug: https://bugs.gentoo.org/669096
+--- a/gdb/configure.ac
++++ b/gdb/configure.ac
+@@ -616,4 +616,4 @@ esac
+ 
+-# These are the libraries checked by Readline.
+-AC_SEARCH_LIBS(tgetent, [termcap tinfo curses ncursesw ncurses])
++# These are the libraries checked by Readline. Not really: readline does not 
know about *w libs.
++AC_SEARCH_LIBS(tgetent, [termcap tinfow tinfo curses ncursesw ncurses])
+ 
+--- a/gdb/configure
++++ b/gdb/configure
+@@ -8984,3 +8984,3 @@ esac
+ 
+-# These are the libraries checked by Readline.
++# These are the libraries checked by Readline. Not really: readline does not 
know about *w libs.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing 
tgetent" >&5
+@@ -9009,3 +9009,3 @@ return tgetent ();
+ _ACEOF
+-for ac_lib in '' termcap tinfo curses ncursesw ncurses; do
++for ac_lib in '' termcap tinfow tinfo curses ncursesw ncurses; do
+   if test -z "$ac_lib"; then

diff --git a/sys-devel/gdb/gdb-8.2-r1.ebuild b/sys-devel/gdb/gdb-8.2-r1.ebuild
new file mode 100644
index 00000000000..d7f7e1ef262
--- /dev/null
+++ b/sys-devel/gdb/gdb-8.2-r1.ebuild
@@ -0,0 +1,261 @@
+# Copyright 1999-2018 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+PYTHON_COMPAT=( python{2_7,3_4,3_5,3_6} )
+
+inherit epatch eutils flag-o-matic python-single-r1
+
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} == ${CHOST} ]] ; then
+       if [[ ${CATEGORY} == cross-* ]] ; then
+               export CTARGET=${CATEGORY#cross-}
+       fi
+fi
+is_cross() { [[ ${CHOST} != ${CTARGET} ]] ; }
+
+RPM=
+MY_PV=${PV}
+case ${PV} in
+9999*)
+       # live git tree
+       EGIT_REPO_URI="git://sourceware.org/git/binutils-gdb.git"
+       inherit git-r3
+       SRC_URI=""
+       ;;
+*.*.50.2???????)
+       # weekly snapshots
+       
SRC_URI="ftp://sourceware.org/pub/gdb/snapshots/current/gdb-weekly-${PV}.tar.xz";
+       ;;
+*.*.*.*.*.*)
+       # fedora versions; note we swap the rpm & fedora core versions.
+       # gdb-6.8.50.20090302-8.fc11.src.rpm -> gdb-6.8.50.20090302.11.8.ebuild
+       # gdb-7.9-11.fc23.src.rpm -> gdb-7.9.23.11.ebuild
+       inherit versionator rpm
+       gvcr() { get_version_component_range "$@"; }
+       parse_fedora_ver() {
+               set -- $(get_version_components)
+               MY_PV=$(gvcr 1-$(( $# - 2 )))
+               RPM="${PN}-${MY_PV}-$(gvcr $#).fc$(gvcr $(( $# - 1 ))).src.rpm"
+       }
+       parse_fedora_ver
+       SRC_URI="mirror://fedora-dev/development/rawhide/source/SRPMS/g/${RPM}"
+       ;;
+*)
+       # Normal upstream release
+       SRC_URI="mirror://gnu/gdb/${P}.tar.xz
+               ftp://sourceware.org/pub/gdb/releases/${P}.tar.xz";
+       ;;
+esac
+
+PATCH_VER="1"
+PATCH_DEV="slyfox"
+DESCRIPTION="GNU debugger"
+HOMEPAGE="https://sourceware.org/gdb/";
+SRC_URI="${SRC_URI}
+       
${PATCH_DEV:+https://dev.gentoo.org/~${PATCH_DEV}/distfiles/${PN}-8.1-patches-${PATCH_VER}.tar.xz}
+       ${PATCH_VER:+mirror://gentoo/${PN}-8.1-patches-${PATCH_VER}.tar.xz}
+"
+
+LICENSE="GPL-2 LGPL-2"
+SLOT="0"
+if [[ ${PV} != 9999* ]] ; then
+       KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 
~s390 ~sh ~sparc ~x86 ~ppc-aix ~x64-cygwin ~amd64-fbsd ~x86-fbsd ~amd64-linux 
~x86-linux ~x64-macos ~x86-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris 
~x86-solaris"
+fi
+IUSE="+client lzma multitarget nls +python +server test vanilla xml"
+REQUIRED_USE="
+       python? ( ${PYTHON_REQUIRED_USE} )
+       || ( client server )
+"
+
+RDEPEND="
+       server? ( !dev-util/gdbserver )
+       client? (
+               dev-libs/mpfr:0=
+               >=sys-libs/ncurses-5.2-r2:0=
+               sys-libs/readline:0=
+               lzma? ( app-arch/xz-utils )
+               python? ( ${PYTHON_DEPS} )
+               xml? ( dev-libs/expat )
+               sys-libs/zlib
+       )"
+DEPEND="${RDEPEND}
+       app-arch/xz-utils
+       sys-apps/texinfo
+       client? (
+               virtual/yacc
+               test? ( dev-util/dejagnu )
+               nls? ( sys-devel/gettext )
+       )"
+
+S=${WORKDIR}/${PN}-${MY_PV}
+
+pkg_setup() {
+       use python && python-single-r1_pkg_setup
+}
+
+src_prepare() {
+       [[ -n ${RPM} ]] && rpm_spec_epatch "${WORKDIR}"/gdb.spec
+
+       # upstreamed
+       EPATCH_EXCLUDE+=" 01_all_ia64-TRAP_HWBKPT.patch"
+       EPATCH_EXCLUDE+=" 02_all_solaris-no-uuidsys.patch"
+       ! use vanilla && [[ -n ${PATCH_VER} ]] && EPATCH_SUFFIX="patch" epatch 
"${WORKDIR}"/patch
+       eapply "${FILESDIR}"/${P}-tinfow.patch
+
+       default
+
+       strip-linguas -u bfd/po opcodes/po
+}
+
+gdb_branding() {
+       printf "Gentoo ${PV} "
+       if ! use vanilla && [[ -n ${PATCH_VER} ]] ; then
+               printf "p${PATCH_VER}"
+       else
+               printf "vanilla"
+       fi
+       [[ -n ${EGIT_COMMIT} ]] && printf " ${EGIT_COMMIT}"
+}
+
+src_configure() {
+       strip-unsupported-flags
+
+       local myconf=(
+               --with-pkgversion="$(gdb_branding)"
+               --with-bugurl='https://bugs.gentoo.org/'
+               --disable-werror
+               # Disable modules that are in a combined binutils/gdb tree. 
#490566
+               --disable-{binutils,etc,gas,gold,gprof,ld}
+       )
+       local sysroot="${EPREFIX}/usr/${CTARGET}"
+       is_cross && myconf+=(
+               --with-sysroot="${sysroot}"
+               --includedir="${sysroot}/usr/include"
+               --with-gdb-datadir="\${datadir}/gdb/${CTARGET}"
+       )
+
+       if use server && ! use client ; then
+               # just configure+build in the gdbserver subdir to speed things 
up
+               cd gdb/gdbserver
+               myconf+=( --program-transform-name='' )
+       else
+               # gdbserver only works for native targets (CHOST==CTARGET).
+               # it also doesn't support all targets, so rather than duplicate
+               # the target list (which changes between versions), use the
+               # "auto" value when things are turned on.
+               is_cross \
+                       && myconf+=( --disable-gdbserver ) \
+                       || myconf+=( $(use_enable server gdbserver auto) )
+       fi
+
+       if ! ( use server && ! use client ) ; then
+               # if we are configuring in the top level, then use all
+               # the additional global options
+               myconf+=(
+                       --enable-64-bit-bfd
+                       --disable-install-libbfd
+                       --disable-install-libiberty
+                       # Disable guile for now as it requires guile-2.x #562902
+                       --without-guile
+                       # This only disables building in the readline subdir.
+                       # For gdb itself, it'll use the system version.
+                       --disable-readline
+                       --with-system-readline
+                       # This only disables building in the zlib subdir.
+                       # For gdb itself, it'll use the system version.
+                       --without-zlib
+                       --with-system-zlib
+                       --with-separate-debug-dir="${EPREFIX}"/usr/lib/debug
+                       $(use_with xml expat)
+                       $(use_with lzma)
+                       $(use_enable nls)
+                       $(use multitarget && echo --enable-targets=all)
+                       $(use_with python python "${EPYTHON}")
+               )
+       fi
+       if use sparc-solaris || use x86-solaris ; then
+               # disable largefile support
+               # https://sourceware.org/ml/gdb-patches/2014-12/msg00058.html
+               myconf+=( --disable-largefile )
+       fi
+
+       econf "${myconf[@]}"
+}
+
+src_test() {
+       nonfatal emake check || ewarn "tests failed"
+}
+
+src_install() {
+       if use server && ! use client; then
+               cd gdb/gdbserver || die
+       fi
+       default
+       if use client; then
+               find "${ED}"/usr -name libiberty.a -delete || die
+       fi
+       cd "${S}" || die
+
+       # Delete translations that conflict with binutils-libs. #528088
+       # Note: Should figure out how to store these in an internal gdb dir.
+       if use nls ; then
+               find "${ED}" \
+                       -regextype posix-extended -regex 
'.*/(bfd|opcodes)[.]g?mo$' \
+                       -delete || die
+       fi
+
+       # Don't install docs when building a cross-gdb
+       if [[ ${CTARGET} != ${CHOST} ]] ; then
+               rm -rf "${ED}"/usr/share/{doc,info,locale} || die
+               local f
+               for f in "${ED}"/usr/share/man/*/* ; do
+                       if [[ ${f##*/} != ${CTARGET}-* ]] ; then
+                               mv "${f}" "${f%/*}/${CTARGET}-${f##*/}" || die
+                       fi
+               done
+               return 0
+       fi
+       # Install it by hand for now:
+       # https://sourceware.org/ml/gdb-patches/2011-12/msg00915.html
+       # Only install if it exists due to the twisted behavior (see
+       # notes in src_configure above).
+       [[ -e gdb/gdbserver/gdbreplay ]] && dobin gdb/gdbserver/gdbreplay
+
+       if use client ; then
+               docinto gdb
+               dodoc gdb/CONTRIBUTE gdb/README gdb/MAINTAINERS \
+                       gdb/NEWS gdb/ChangeLog gdb/PROBLEMS
+       fi
+       docinto sim
+       dodoc sim/{ChangeLog,MAINTAINERS,README-HACKING}
+       if use server ; then
+               docinto gdbserver
+               dodoc gdb/gdbserver/{ChangeLog,README}
+       fi
+
+       if [[ -n ${PATCH_VER} ]] ; then
+               dodoc "${WORKDIR}"/extra/gdbinit.sample
+       fi
+
+       # Remove shared info pages
+       rm -f "${ED}"/usr/share/info/{annotate,bfd,configure,standards}.info*
+
+       # gcore is part of ubin on freebsd
+       if [[ ${CHOST} == *-freebsd* ]]; then
+               rm "${ED}"/usr/bin/gcore || die
+       fi
+}
+
+pkg_postinst() {
+       # portage sucks and doesnt unmerge files in /etc
+       rm -vf "${EROOT}"/etc/skel/.gdbinit
+
+       if use prefix && [[ ${CHOST} == *-darwin* ]] ; then
+               ewarn "gdb is unable to get a mach task port when installed by 
Prefix"
+               ewarn "Portage, unprivileged.  To make gdb fully functional 
you'll"
+               ewarn "have to perform the following steps:"
+               ewarn "  % sudo chgrp procmod ${EPREFIX}/usr/bin/gdb"
+               ewarn "  % sudo chmod g+s ${EPREFIX}/usr/bin/gdb"
+       fi
+}

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