sys-devel/binutils: expand SONAME with USE=multitarget, bug #666100

In #663690 creative use of LD_LIBRARY_PATH exposed a problem
of Gentoo's split across binutils and binutils-libs:
we install libbfd.so with the same SONAME but different ABIs.
This caused 'ld' to SIGSEGV or fail asserts.

The change here is to give unique SONAME to each of:
native binutils, cross binutils, binutils-libs packages.

On top of that we encode USE=multitarget flags into SONAME as well.
binutils-libs will also include USE=64-bit-bfd.

This way dynamic linker will be able to detect incompatible changes
like:
- rebuild binutils with new USE flags
- install binutils-libs (silently overrides binutils' libbfd.so)
and report it explicitly.

Bug: https://bugs.gentoo.org/666100
Package-Manager: Portage-2.3.49, Repoman-2.3.10

1 files changed, 5 insertions, 2 deletions

diff --git a/sys-devel/binutils/binutils-9999.ebuild b/sys-devel/binutils/binutils-9999.ebuild
index b51be8aa269b..93dcbdf26b08 100644
--- a/sys-devel/binutils/binutils-9999.ebuild
+++ b/sys-devel/binutils/binutils-9999.ebuild
@@ -19,7 +19,7 @@ IUSE="+cxx doc multitarget +nls static-libs test"
 #                      for the patchsets
 #                      Default: dilfridge :)
 
-PATCH_VER=1
+PATCH_VER=2
 PATCH_BINUTILS_VER=9999
 
 case ${PV} in
@@ -49,7 +49,7 @@ esac
 # The Gentoo patchset
 #
 PATCH_BINUTILS_VER=${PATCH_BINUTILS_VER:-${PV}}
-PATCH_DEV=${PATCH_DEV:-dilfridge}
+PATCH_DEV=${PATCH_DEV:-slyfox}
 
 [[ -z ${PATCH_VER} ]] || SRC_URI="${SRC_URI}
 	https://dev.gentoo.org/~${PATCH_DEV}/distfiles/binutils-${PATCH_BINUTILS_VER}-patches-${PATCH_VER}.tar.xz"
@@ -249,6 +249,9 @@ src_configure() {
 		# Strip out broken static link flags.
 		# https://gcc.gnu.org/PR56750
 		--without-stage1-ldflags
+		# Change SONAME to avoid conflict across
+		# {native,cross}/binutils, binutils-libs. #666100
+		--with-extra-soversion-suffix=gentoo-${CATEGORY}-${PN}-$(usex multitarget mt st)
 	)
 	echo ./configure "${myconf[@]}"
 	"${S}"/configure "${myconf[@]}" || die