Accidentally overwrote dylib files to usr/local/lib by copying lib from application bundle

Question

I overwrote some of my dylib files in /usr/local/bin/ and now I'm having issues running a program. Is there a way of restoring these files back?

The program ffmpeg was running fine for me. Then I installed the program GPAC and did the following:

$ sudo cp MP4Box /usr/local/bin/

$ sudo cp -R /Applications/GPAC.app/Contents/MacOS/lib/* /usr/local/lib/

I did this because it would allow me to run MP4Box from the command line since /usr/local/lib/ is in $PATH.

But now when I try running

$ ffmpeg

I get this error:

dyld: Library not loaded: /usr/local/opt/sdl2/lib/libSDL2-2.0.0.dylib Referenced from: /usr/local/bin/ffmpeg Reason: Incompatible library version: ffmpeg requires version 10.0.0 or later, but libSDL2-2.0.0.dylib provides version 5.0.0 Abort trap: 6

I think what happened is: I overwrote some files into /usr/local/lib/ that I shouldn't have done. In this case, I overwrote the version 10.0.0 libSDL2-2.0.0.dylib with version 5.0.0 from the GPAC app bundle.

I have tried using homebrew to uninstall and reinstall ffmpeg, hoping that it would see that it would need to update my dylib libraries.

$ brew uninstall ffmpeg

$ brew install ffmpeg

$ ffmpeg

But this results in the same error.

Here is the list of all the files I copied from /Applications/GPAC.app/Contents/MacOS/lib/* to /usr/local/lib/

libSDL2-2.0.0.dylib libfreetype.6.dylib libplds4.dylib liba52.0.dylib libgpac.dylib libpng16.16.dylib libavcodec.58.dylib libjpeg.9.dylib libpostproc.55.dylib libavdevice.58.dylib liblzma.5.dylib libssl.1.0.0.dylib libavfilter.7.dylib libmad.0.dylib libswresample.3.dylib libavformat.58.dylib libmozjs185.1.0.dylib libswscale.5.dylib libavresample.4.dylib libmp3lame.0.dylib libtheora.0.dylib libavutil.56.dylib libnspr4.dylib libvorbis.0.dylib libcrypto.1.0.0.dylib libogg.0.dylib libx264.152.dylib libfaad.2.dylib libplc4.dylib

random random · Accepted Answer · 2019-08-21T01:54:47

While running brew to reinstall ffmpeg directly did not work, I found out that running brew to reinstall ffmpeg's dependencies did work.

So for the earlier example, libSDL2-2.0.0.dylib wasn't loading correctly. I googled brew libSDL2-2.0.0.dylib, and found out that the brew package name for this was sdl2.

I ran

$ brew reinstall sdl2

$ ffmpeg

and I didn't get the libSDL2-2.0.0.dylib error anymore! I repeated this for each low level library that ffmpeg said it needed, and it eventually worked.

Accidentally overwrote dylib files to usr/local/lib by copying lib from application bundle

1 Answers