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thanks all for reply. i could fix it by giving -cc="gcc -m64 -fPIC" compiler flags. seems like PIC is needed.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Libav-user <libav-user-bounces@ffmpeg.org> on behalf of David Rappo <davidr@lens-immersive.com><br>
<b>Sent:</b> Wednesday, March 24, 2021 5:48 PM<br>
<b>To:</b> This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. <libav-user@ffmpeg.org><br>
<b>Subject:</b> Re: [Libav-user] ffmpeg compilation failing when trying to build shared lib</font>
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<div dir="ltr">Not sure if it will make a difference but you could try adding --disable-static.</div>
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<div dir="ltr" class="x_gmail_attr">On Thu, Mar 25, 2021 at 8:32 AM Kumar, Abhijeet <<a href="mailto:amk7371@psu.edu">amk7371@psu.edu</a>> wrote:<br>
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hi, i'm trying to build as a dynamic library but compilation fails can you help??<br>
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<div>[amk7371@e5-cse-204-02 FFmpeg]$ ./configure --prefix=/home/mdl/amk7371/video_analytics/FFmpeg_x64<span style="background-color:rgb(255,255,0)"> --enable-shared --disable-x86asm --enable-gpl --enable-pic</span></div>
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<div><span style="background-color:rgb(255,255,255); display:inline"> ^</span>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libavdevice/libavdevice.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libavfilter/libavfilter.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">AR libavdevice/libavdevice.a</div>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libswscale/libswscale.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libavutil/libavutil.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libpostproc/libpostproc.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libavformat/libavformat.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libavcodec/libavcodec.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">GEN libswresample/libswresample.ver</div>
<div style="margin:0px; background-color:rgb(255,255,255)">AR libswresample/libswresample.a</div>
<div style="margin:0px; background-color:rgb(255,255,255)">MAN doc/ffprobe-all.1</div>
<div style="margin:0px; background-color:rgb(255,255,255)">AR libavcodec/libavcodec.a</div>
<div style="margin:0px; background-color:rgb(255,255,255)">LD libavutil/libavutil.so.56</div>
<div style="margin:0px; background-color:rgb(255,255,255)">LD libswscale/libswscale.so.5</div>
<div style="margin:0px; background-color:rgb(255,255,255)">LD libpostproc/libpostproc.so.55</div>
<div style="margin:0px; background-color:rgb(255,255,255)">LD libswresample/libswresample.so.3</div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,0)">LD libavcodec/libavcodec.so.58</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,0)">/usr/bin/ld: libavcodec/mqc.o: relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,0)">/usr/bin/ld: libavcodec/mqcdec.o: relocation R_X86_64_32S against undefined symbol `ff_mqc_qe' can not be used when making a shared object; recompile with
-fPIC</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,0)">/usr/bin/ld: libavcodec/svq13.o: relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,0)">/usr/bin/ld: final link failed: Nonrepresentable section on output</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)">collect2: error: ld returned 1 exit status</div>
<div style="margin:0px; background-color:rgb(255,255,255)">make: *** [libavcodec/libavcodec.so.58] Error 1</div>
<span style="margin:0px; background-color:rgb(255,255,255)">make: *** Waiting for unfinished jobs....</span><br>
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