09-16-06 06:43 PM
Hi, I'm having some trouble getting ffmpeg working on hardend linux
kernel. I hope this newsgroup is the appropiate place to ask (I did
find a previous refference about DT_TEXTREL which unfortunatly did not
help me).
I'm using gentoo linux to start with, with a hardened 2.6.16 kernel
(pax etc enabled).
my gcc version is:
7of9 libavcodec # cc --version
gcc (GCC) 3.4.6 (Gentoo Hardened 3.4.6-r1, ssp-3.4.5-1.0, pie-8.7.9)
and my ld version is:
7of9 libavcodec # ld --version
GNU ld version 2.16.1
When I install ffmpeg-0.4.9_p20060816 it builds and installs just fine,
however running it I get a permission denied error, coming most likly
from a DT_TEXTREL error.
ffmpeg: error while loading shared libraries:
/usr/lib/libavcodec.so.51: cannot make segment writable for relocation:
Permission denied
/usr/lib/gcc/i686-pc-linux-gnu/3.4.6/../../../../i686-pc-linux-gnu/bin/ld:
warning: creating a DT_TEXTREL in object.
The previous post I found about this issue was to make sure that the
sources where compiled with the -fPIC option. I checked and it appears
to be so.
For gentoo people, to double check I did an ebuild ffmpeg compile, goto
the libavcodec dir, edited the makefile to insert an -fPIC (though I
was quite sure it would take my cflag fPIC anyhow) and here is the
snipped of the result. As it's clearly visible, fPIC is set twice,
(once from the profile once from the makefile)
i686-pc-linux-gnu-gcc -fPIC -fomit-frame-pointer -fomit-frame-pointer
-Wdeclaration-after-statement -Wall -Wno-switch -fPIC
-DHAVE_AV_CONFIG_H -I..
-I/var/tmp/portage/ffmpeg-0.4.9_p20060816/work/ffmpeg/libavutil
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC9X_SOURCE -fPIC
-DPIC -c -o liba52/imdct.o liba52/imdct.c
i686-pc-linux-gnu-gcc -fPIC -fomit-frame-pointer -fomit-frame-pointer
-Wdeclaration-after-statement -Wall -Wno-switch -fPIC
-DHAVE_AV_CONFIG_H -I..
-I/var/tmp/portage/ffmpeg-0.4.9_p20060816/work/ffmpeg/libavutil
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC9X_SOURCE -fPIC
-DPIC -c -o liba52/parse.o liba52/parse.c
i686-pc-linux-gnu-gcc -fPIC -fomit-frame-pointer -fomit-frame-pointer
-Wdeclaration-after-statement -Wall -Wno-switch -fPIC
-DHAVE_AV_CONFIG_H -I..
-I/var/tmp/portage/ffmpeg-0.4.9_p20060816/work/ffmpeg/libavutil
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC9X_SOURCE -fPIC
-DPIC -c -o liba52/crc.o liba52/crc.c
i686-pc-linux-gnu-gcc -fPIC -fomit-frame-pointer -fomit-frame-pointer
-Wdeclaration-after-statement -Wall -Wno-switch -fPIC
-DHAVE_AV_CONFIG_H -I..
-I/var/tmp/portage/ffmpeg-0.4.9_p20060816/work/ffmpeg/libavutil
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_ISOC9X_SOURCE -fPIC
-DPIC -c -o liba52/resample.o liba52/resample.c
rm -f libavcodec.a
ar rc libavcodec.a bitstream.o utils.o allcodecs.o mpegvideo.o
jrevdct.o jfdctfst.o jfdctint.o mjpeg.o resample.o resample2.o
dsputil.o motion_est.o imgconvert.o mpeg12.o mpegaudiodec.o
simple_idct.o ratecontrol.o eval.o error_resilience.o fft.o mdct.o
raw.o golomb.o cabac.o faandct.o parser.o vp3dsp.o h264idct.o
rangecoder.o pnm.o h263.o msmpeg4.o h263dec.o opt.o bitstream_filter.o
imgresample.o aasc.o ac3enc.o alac.o asv1.o avs.o bmp.o cavs.o
cavsdsp.o cinepak.o cljr.o cook.o cscd.o lzo.o cyuv.o dvbsubdec.o
dvbsub.o dvdsub.o dvdsubenc.o dv.o 8bps.o ffv1.o huffyuv.o flac.o
flacenc.o flashsv.o flicvideo.o 4xm.o fraps.o h261.o h264.o
idcinvideo.o indeo2.o indeo3.o interplayvideo.o dpcm.o kmvc.o loco.o
mace.o mmvideo.o mpegaudio.o msrle.o msvideo1.o lcl.o nuv.o rtjpeg.o
png.o qdm2.o qdrw.o qpeg.o qtrle.o ra144.o ra288.o roqvideo.o rpza.o
rv10.o shorten.o smacker.o smc.o snow.o sonic.o svq1.o vp3.o
truemotion1.o truemotion2.o truespeech.o tscc.o tta.o ulti.o vc1.o
vc1dsp.o vcr1.o vmdav.o vorbis.o vqavideo.o wmadec.o wnv1.o ws-snd1.o
xan.o xl.o zmbv.o pcm.o adpcm.o adx.o g726.o faad.o faac.o xvidff.o
xvid_rc.o x264.o mp3lameaudio.o oggvorbis.o a52dec.o
liba52/bit_allocate.o liba52/bitstream.o liba52/downmix.o
liba52/imdct.o liba52/parse.o liba52/crc.o liba52/resample.o
ranlib libavcodec.a
i686-pc-linux-gnu-gcc -shared -Wl,-soname,libavcodec.so.51
-Wl,--warn-common -rdynamic -export-dynamic -Wl,--as-needed
-Wl,-rpath-link,/var/tmp/portage/ffmpeg-0.4.9_p20060816/work/ffmpeg/libavcod
ec
-Wl,-rpath-link,/var/tmp/portage/ffmpeg-0.4.9_p20060816/work/ffmpeg/libavfor
mat
-Wl,-rpath-link,/var/tmp/portage/ffmpeg-0.4.9_p20060816/work/ffmpeg/libavuti
l
-o libavcodec.so.51 bitstream.o utils.o allcodecs.o mpegvideo.o
jrevdct.o jfdctfst.o jfdctint.o mjpeg.o resample.o resample2.o
dsputil.o motion_est.o imgconvert.o mpeg12.o mpegaudiodec.o
simple_idct.o ratecontrol.o eval.o error_resilience.o fft.o mdct.o
raw.o golomb.o cabac.o faandct.o parser.o vp3dsp.o h264idct.o
rangecoder.o pnm.o h263.o msmpeg4.o h263dec.o opt.o bitstream_filter.o
imgresample.o aasc.o ac3enc.o alac.o asv1.o avs.o bmp.o cavs.o
cavsdsp.o cinepak.o cljr.o cook.o cscd.o lzo.o cyuv.o dvbsubdec.o
dvbsub.o dvdsub.o dvdsubenc.o dv.o 8bps.o ffv1.o huffyuv.o flac.o
flacenc.o flashsv.o flicvideo.o 4xm.o fraps.o h261.o h264.o
idcinvideo.o indeo2.o indeo3.o interplayvideo.o dpcm.o kmvc.o loco.o
mace.o mmvideo.o mpegaudio.o msrle.o msvideo1.o lcl.o nuv.o rtjpeg.o
png.o qdm2.o qdrw.o qpeg.o qtrle.o ra144.o ra288.o roqvideo.o rpza.o
rv10.o shorten.o smacker.o smc.o snow.o sonic.o svq1.o vp3.o
truemotion1.o truemotion2.o truespeech.o tscc.o tta.o ulti.o vc1.o
vc1dsp.o vcr1.o vmdav.o vorbis.o vqavideo.o wmadec.o wnv1.o ws-snd1.o
xan.o xl.o zmbv.o pcm.o adpcm.o adx.o g726.o faad.o faac.o xvidff.o
xvid_rc.o x264.o mp3lameaudio.o oggvorbis.o a52dec.o
liba52/bit_allocate.o liba52/bitstream.o liba52/downmix.o
liba52/imdct.o liba52/parse.o liba52/crc.o liba52/resample.o
-L../libavutil -lavutil -lm -lz -lmp3lame -lvorbis -lvorbisenc -logg
-logg -lxvidcore -lx264 -lfaac -lfaad -ldl
/usr/lib/gcc/i686-pc-linux-gnu/3.4.6/../../../../i686-pc-linux-gnu/bin/ld:
warning: creating a DT_TEXTREL in object.
ln -sf libavcodec.so.51 libavcodec.so
So how do I go about fixing this ...?
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