Bug 51365

Summary:	assertion error's on compilation for arm
Product:	systemd	Reporter:	Stefan Schantl <stefan.schantl>
Component:	general	Assignee:	systemd-bugs
Status:	RESOLVED NOTOURBUG	QA Contact:	systemd-bugs
Severity:	normal
Priority:	medium	CC:	michael.tremer
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Stefan Schantl 2012-06-23 12:55:47 UTC

Hello, when I'm trying to compile the current version of systemd (185) for our distribution, there will be displayed some assertion error's for the architectures armv5tel and armv7hl. 

/usr/bin/ld: BFD version 2.22 assertion fail ../../binutils-2.22/bfd/elf32-arm.c:12049
/usr/bin/ld: BFD version 2.22 assertion fail ../../binutils-2.22/bfd/elf32-arm.c:12049

I'm using gcc 4.7.0 with enabled SSP and binutils 2.22.

Full buildlog's for both architectures can be found here:
http://pakfire.ipfire.org/packages/release/systemd/0-185-1.ip3/logs/build.armv5tel.1.log
http://pakfire.ipfire.org/packages/release/systemd/0-185-1.ip3/logs/build.armv7hl.1.log

Howerver this is not a distribution specific problem, on current build logs from the fedora build system the same messages can be found:
http://arm.koji.fedoraproject.org/packages/systemd/185/2.fc18/data/logs/armv5tel/build.log
http://arm.koji.fedoraproject.org/packages/systemd/185/2.fc18/data/logs/armv7hl/build.log

Comment 1 Lennart Poettering 2012-06-24 02:55:15 UTC

That looks like a bug in your binutils, not systemd.

In fact, if the build tools crash when building a project it's definitely a build tool problem, never a project problem.

Comment 2 Michael Tremer 2012-06-24 04:09:47 UTC

Lennart, you are possibly right. If I had a guess I would say it is related to LTO or some stuff.

We could not see this error on any other package so far, so maybe there is some code which may possibly cause this error?

Newer versions of GCC (4.7.1) and binutils (2.22.52.0.3) abort the whole systemd build, so we need to do something about it :D

Comment 3 Lennart Poettering 2012-06-24 08:21:37 UTC

There's nothing really that interesting in the systemd build, except that we comprehensively make use of "-ffunction-sections -fdata-sections" plus "-Wl,--as-needed -Wl,--gc-sections". Dropping thes eoptions might fix the build for you (at the expense of much bigger binaries).

Comment 4 Michael Tremer 2012-06-24 12:24:57 UTC

We did some further investigation on the topic (latest binutils version) and manual builds.

Passing --gc-sections causes the problems on nearly all linker jobs on the ARM platform. Removing that from CCLDFLAGS lets us run the build through.

The issue is known to the binutils team for quite some time: http://sourceware.org/bugzilla/show_bug.cgi?id=14189

Thank you Lennart for giving the right hint.

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