Linaro OpenEmbedded

[libav] unresolvable R_AARCH64_ADR_PREL_PG_HI21 relocation against symbol `sin@@GLIBC_2.16'

Bug #1089933 reported by Marcin Juszkiewicz on 2012-12-13

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	Linaro AArch64 cross-distro work	Fix Released	Low	Mans Rullgard
	Linaro OpenEmbedded	Fix Released	Undecided	Unassigned	Linaro OpenEmbedded 13.01

Bug Description

| GEN libavcodec/sinewin_tables.h
| CC libavcodec/sinewin.o
| LD libavutil/libavutil.so.52
| /media/storage/devel/canonical/aarch64/CLEAN/build/tmp-eglibc/sysroots/x86_64-linux/usr/bin/aarch64-oe-linux/../../libexec/aarch64-oe-linux/gcc/aarch64-oe-linux/4.7.3/ld: libavutil/eval.o(.text+0x1010): unresolvable R_AARCH64_ADR_PREL_PG_HI21 relocation against symbol `sin@@GLIBC_2.16'
| /media/storage/devel/canonical/aarch64/CLEAN/build/tmp-eglibc/sysroots/x86_64-linux/usr/bin/aarch64-oe-linux/../../libexec/aarch64-oe-linux/gcc/aarch64-oe-linux/4.7.3/ld: final link failed: Nonrepresentable section on output
| collect2: error: ld returned 1 exit status
| make: *** [libavutil/libavutil.so.52] Error 1
| ERROR: oe_runmake failed
| ERROR: Function failed: do_compile (see /home/hrw/HDD/devel/canonical/aarch64/CLEAN/build/tmp-eglibc/work/aarch64-oe-linux/libav/0.8.99+git2+6d5b0092678b2a95dfe209a207550bd2fe9ef646-r6.0/temp/log.do_compile.20175 for further information)

14:54 hrw@puchatek:build$ ./tmp-eglibc/sysroots/x86_64-linux/usr/bin/aarch64-oe-linux/aarch64-oe-linux-ld --version
GNU ld (GNU Binutils) 2.23.51.20121130

Revision history for this message

Marcin Juszkiewicz (hrw) wrote on 2013-01-09:

| /tmp/OE/tmp/sysroots/x86_64-linux/usr/bin/aarch64-oe-linux/../../libexec/aarch64-oe-linux/gcc/aarch64-oe-linux/4.7.3/ld: libavutil/eval.o(.text+0xfa0): unresolvable R_AARCH64_ADR_PREL_PG_HI21 relocation against symbol `sin@@GLIBC_2.17'

binutils 2.23.51.20130109 and eglibc 2.17 - still fail.

We need toolchain developer for it probably.

Revision history for this message

Marcin Juszkiewicz (hrw) wrote on 2013-01-09:

Steps to reproduce:

mkdir openembedded
cd openembedded
git clone git://git.linaro.org/openembedded/meta-aarch64.git
bash meta-aarch64/scripts/init.sh
cd openembedded/openembedded-core
. oe-init-build-env ../build
bitbake libav

After some time (up to 3h) it should get to fail point.

Marcin Juszkiewicz (hrw) on 2013-01-09

Changed in linaro-oe:
assignee:	nobody → Matthew Gretton-Dann (matthew-gretton-dann)

Revision history for this message

Marcus Shawcroft (marcus-shawcroft) wrote on 2013-01-10:

The test case needs reducing a tad.

R_AARCH64_ADR_PREL_PG_HI21 is used by the small absolute memory model, given that the failing link appears to be producing ject my first question would be did eval.o get compiled with -fPIC ??

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Marcus Shawcroft (marcus-shawcroft) wrote on 2013-01-10:

Ooops, sticky fingers. My last comment should have read "given that the failing link appears to be producing a shared object, my first question...."

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Marcus Shawcroft (marcus-shawcroft) wrote on 2013-01-10:

Digging a bit further confirms my suspicion, libav is trying to build shared objects without the requesting -fPIC. I've hacked the Makefile and can successfully run "bitbake libav". Marcin, I leave it to you to fix the libav Makefile properly.

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Marcin Juszkiewicz (hrw) wrote on 2013-01-10:

diff --git a/Makefile b/Makefile
index 19b8df4..9cca3a2 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ ALLFFLIBS = avcodec avdevice avfilter avformat avutil postproc swscale

IFLAGS := -I. -I$(SRC_PATH)
CPPFLAGS := $(IFLAGS) $(CPPFLAGS)
-CFLAGS += $(ECFLAGS)
+CFLAGS += $(ECFLAGS) -fPIC
CCFLAGS = $(CFLAGS)
YASMFLAGS += $(IFLAGS) -I$(SRC_PATH)/libavutil/x86/ -Pconfig.asm
HOSTCFLAGS += $(IFLAGS)

And it built.

Revision history for this message

Marcin Juszkiewicz (hrw) wrote on 2013-01-10:

Thanks Marcus.

Marcin Juszkiewicz (hrw) on 2013-01-10

Changed in linaro-oe:
assignee:	Matthew Gretton-Dann (matthew-gretton-dann) → nobody
Changed in linaro-aarch64:
assignee:	nobody → Mans Rullgard (mansr)