Brew doctor: dyld: Library not loaded & Error: No available formula for zlib

Question

When I brew doctor I get the following errors:

dyld: Library not loaded: /usr/lib/libltdl.7.dylib
  Referenced from: /usr/local/bin/php
  Reason: image not found
Error: No available formula for zlib

The file libltdl.7.dylib is not in my /usr/lib directory, but there are several other .dylib files.

I'm running 10.8.1 with the latest version of Xcode (4.4.1) and its Command Line Tools installed.

Any idea how to solve these errors?

Solution 1

Try to re-install libtool by:

brew reinstall libtool --universal && brew unlink libtool && brew link libtool

If that doesn't help, try removing libtool completely, and then retry the steps above:

brew uninstall libtool

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If it still doesn't work after trying the steps above, check to see if you have the DYLD_FALLBACK_LIBRARY_PATH variable defined somewhere on the system (e.g. ~/.profile) and try unsetting it before trying the steps above again.

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Other commands which could be useful for identifying the issue:

$ libtool --version
$ whereis libtool
$ set | grep DYLD_FALLBACK_LIBRARY_PATH
$ echo $DYLD_FALLBACK_LIBRARY_PATH

Solution 2

For me it works with:

sudo ln -s /usr/local/Cellar/libtool/2.4.2/lib/libltdl.7.dylib /usr/local/lib/libltdl.7.dylib

Solution 3

Try:

brew tap homebrew/dupes

See: https://github.com/josegonzalez/homebrew-php/pull/219

Solution 4

if you have an error about pcre like this :

dyld: Library not loaded: /usr/local/opt/pcre/lib/libpcre.1.dylib
  Referenced from: /usr/local/Cellar/watchman/4.7.0/libexec/bin/watchman
  Reason: image not found
Abort trap: 6

you need to link pcre.

brew link --overwrite pcre

Solution 5

None of them work I personally reinstalled Watchman like so:

brew uninstall watchman
brew reinstall watchman

View more solutions

Comments

[Pavel Nikolov]

I had to do brew uninstall libtool and then run your command and everything worked fine again.

[Simon Whitehead]

+1 to the above comment (and answer). I too had to uninstall my problem package then reinstall via the provided answer.

[Mitch]

This worked for me - my route had been via an update to OSX Mavericks followed by a Ruby update to 2.1.1 (since anything prior doesnt seem to compile under Mavericks) and then rmagick/imagemagick falling over, requiring reinstall of ImageMagick via brew and forcing rmagick to v 2.13.2 (since 2.13.4 gave issues)

[Kun]

I had one issue when I tried to find out the version of libtool: error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeD‌​efault.xctoolchain/u‌​sr/bin/libtool: unknown option character `-' in: --version ........ My Xcode version is 7.3.0

[JESii]

Best way I've found to handle these kinds of issues; if the DYLD library didn't get installed the first time, it generally doesn't get installed the nth time.

[Yoshi]

this is exactly what I had. Thank you Diego

[Randy Lam]

I made it without --universal and I'm Sierra 10.12.4;

[Andriy Makukha]

Or just brew install pcre.