Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib

Question

When I try running rails console I get this error:

/Users/TuzsNewMacBook/.rvm/gems/ruby-2.3.7/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_         


        

Answer 1

Yes, the best answer is to reinstall.

You can get the version easily by typing:

ruby -v

With rbenv, the command is i.e.:

rbenv install 2.3.7

with rvm:

rvm reinstall 2.3.7

Answer 2

Background: This has happened when I tried to install tig, but I think this is a common issue that you may have that you need to manually link the installed software into the right path that another software wants.

If you can not find readline installed on your Mac, you should run

brew install readline

After you installed deadline, brew will ask you to link it. But actually you can not link by running

brew link readline

Even you can not link by running

sudo brew link readline

Mac OS will warn you this is extremely dangerous and stop you to do.

The Latest version of readline is version 8, so you will see the error message like

Library not loaded: /usr/local/opt/readline/lib/libreadline.8.dylib

The brew installed deadline at

/usr/local/Cellar/readline/8.0.4

So you have to manually link it to the place that your software wants by using command ls

ln -s /usr/local/Cellar/readline/8.0.4 /usr/local/opt/readline

Enjoy!

Answer 3

My problem was just the same when running lftp.

Just running brew upgrade has solved my problem, as it has updated (among others):

readline 8.0.0_1 -> 8.0.1
lftp 4.8.4 -> 4.8.4_2

Answer 4

I would recommend against manually symlink'ing native libraries. Aas of OS X 10.4, the standard include library path /usr/include is no longer used and is locked by SIP (making it difficult to move things to).

Apple ships a “legacy installer” for you to be able to install the headers in the “old location”, which will also resolve your path to correctly find headers installed via brew.

cp /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg ~/Desktop && open ~/Desktop/macOS_SDK_headers_for_macOS_10.14.pkg`

See here for a detailed write-up on what is going on.

Answer 5

Got this issue:

dyld: Library not loaded: /usr/local/opt/mpfr/lib/libmpfr.4.dylib

doing...

cd /usr/local/opt/mpfr/lib/
ln -s libmpfr.dylib libmpfr.4.dylib

did the trick for me for macOS Catalina

Answer 6

So Ive checked a few answers here but I dont think they can work with a vanilla Mojave mac install. Im using 10.14.4 while I did these:

• get homebrew from https://brew.sh

• $ brew install coreutils : this installs the gnu coreutils pkg for mac, we want the greadlink from this because macOSX's readlink is not the same as the gnu readlink. Its extremely confusing but such is the life in macland.

• $ echo 'alias readlink=greadlink' >> ~/.bash_aliases I found macs readlink to be a bit lacking so I overrode the existing readlink by aliasing greadlink. (you can make this usable by all users by $ alias readlink=greadlink >> /etc/bashrc which will enable every user to be able to use it.

• $ ln -s /usr/local/opt/readline/lib/libreadline.8.dylib /usr/local/opt/readline/lib/libreadline.7.dylib I linked the already linked .8. file instead of '.8.0.' file because if it were to get updated to .8.1. then my readlink wont break or miss features on the library. Im pretty sure we will format our macs before 9+ comes out.