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I was trying to reinstall my ffmpeg, following this guide, on my ARM Ubuntu machine. Unfortunately, when I compile a program which uses this lib I get the following failure:
/usr/bin/ld: /usr/local/lib/libavcodec.a(amrnbdec.o): relocation R_ARM_MOVW_ABS_NC against `a local symbol' can not be used when making a shared object; recompile with -fPIC /usr/local/lib/libavcodec.a: could not read symbols: Bad value collect2: ld returned 1 exit status Now I would like to recompile it with -fPIC like the compiler is suggesting but I have no idea how. Any help is appreciated.
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By "recompile with -Xlint", the compiler means to inform you that you need to recompile your program like this: javac -Xlint abc.java. If you do so, the compiler will tell you which methods are deprecated so you can remove your calls to them.
Note: Recompile with -Xlint:unchecked for details. How do I recompile with -Xlint:unchecked ? Are you compiling on the command line? If so, add the -Xlint:unchecked to the command line you're executing, just as the message indicates.
The javac -Xlint options control warnings for all files compiled in a particular run of javac . You may have identified specific locations in source code that generate warnings that you no longer want to see. You can use the @SuppressWarnings annotation to suppress warnings whenever that code is compiled.
Briefly, the error means that you can't use a static library to be linked w/ a dynamic one. The correct way is to have a libavcodec compiled into a .so instead of .a, so the other .so library you are trying to build will link well.
The shortest way to do so is to add --enable-shared at ./configure options. Or even you may try to disable shared (or static) libraries at all... you choose what is suitable for you!
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