Bug 701876

Summary:	dev-libs/elfutils-0.178 does not provide libebl for dev-util/dwarves
Product:	Gentoo Linux	Reporter:	Jason A. Donenfeld <zx2c4>
Component:	Current packages	Assignee:	Matthias Schwarzott <zzam>
Status:	RESOLVED FIXED
Severity:	normal	CC:	toolchain
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Jason A. Donenfeld gentoo-dev

2019-12-03 10:49:30 UTC

dev-util/dwarves requires the libebl that <=dev-libs/elfutils-0.177 were providing. 0.178 stopped shipping it. I've made https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=79e3104f280697c5bc4a82be366dcfeb2d8a8660 as a stop-gap solution until either dwarves or elfutils is patched.

Reproducible: Always

Comment 1 Sergei Trofimovich (RETIRED) gentoo-dev

2019-12-03 23:49:25 UTC

Starting from 0.178 libebl is a part of libdw library:
    https://sourceware.org/git/?p=elfutils.git;a=commitdiff;h=b833c731359af12af9f16bcb621b3cdc170eafbc

dwarves will have to adapt unless elfutils also merged libraries incorrectly.

Comment 2 Sergei Trofimovich (RETIRED) gentoo-dev

2019-12-03 23:57:15 UTC

Upstream's cmake should not be hard to tweak to check actually needed symbols instead of check library presence:
    https://git.kernel.org/pub/scm/devel/pahole/pahole.git/tree/cmake/modules/FindDWARF.cmake#n40

Comment 3 Matthias Schwarzott gentoo-dev

2020-02-13 20:03:59 UTC

Jason A. Donenfeld resolved this issue in commit 4580d02134f001d96c73d15ac51f6abc4d0f50dd / dwarves-1.16-r1.

The added patch was meanwhile also applied in upstream git.

Comment 4 Sergei Trofimovich (RETIRED) gentoo-dev

2020-02-13 21:13:51 UTC

Posting upstream patch here for posterity:
    https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/cmake/modules/FindDWARF.cmake?id=de84ae36c7388f8d124fbe39b8073ab72021ad48