Re: Trouble compiling transcode

[Petr Salinger <Petr.Salinger@t-systems.cz>]

Hi.

> gcc -shared .libs/import_ffmpeg.o -ldl -lz -lm -lpthread -lavcodec
> -L/usr/lib -Wl,-soname -Wl,import_ffmpeg.so -o .libs/import_ffmpeg.so
> /usr/bin/ld: /usr/lib/libavcodec.a(utils.o): relocation R_X86_64_32S 
> against `a local symbol' can not be used when making a shared object; 
> recompile with -fPIC


> I tried adding fPIC to the line:
> CFLAGS = -Wall -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> -D_FILE_OFFSET_BITS=64 -g -O2
> in Makefile, but no change.  

The key point is where to add -fPIC,
problem is in libavcodec.a, not the transcode.

Package libavcodec-dev contains two libraries, 
/usr/lib/libavcodec.a and  /usr/lib/libavcodec_pic.a	

For creating shared library, you have to link with libavcodec_pic.

gcc -shared .libs/import_ffmpeg.o -ldl -lz -lm -lpthread -lavcodec_pic 
-L/usr/lib -Wl,-soname -Wl,import_ffmpeg.so -o .libs/import_ffmpeg.so

Regards

	Petr