Unable to find development files for zlib

[ghost]

I get the following when I brew install mpv

Checking for zlib : no Unable to find development files for zlib.

I brew upgrade'd and brew updated'd, no change.

I have an uncanny feeling that this is a silly question, but Google isn't helping.

[henry0312]

Please paste your installing command, e.g. brew install mpv --HEAD By the way, mpv's formula doesn't depend on zlib directly.

$ brew deps --tree -all mpv
mpv
|- :python
|- pkg-config
|- mpv-player/mpv/libass-ct
|  |- :git
|  |- pkg-config
|  |- autoconf
|  |- automake
|  |  |- autoconf
|  |- libtool
|  |- yasm
|  |  |- :python
|  |- freetype
|  |  |- libpng
|  |- fribidi
|- ffmpeg
|  |- pkg-config
|  |- texi2html
|  |- yasm
|  |  |- :python
|  |- x264
|  |  |- :git
|  |  |- yasm
|  |  |  |- :python
|  |- faac
|  |- lame
|  |- xvid
|- mpg123
|- jpeg
|- little-cms2
|  |- jpeg
|  |- libtiff
|  |  |- jpeg
|- lua

[henry0312]

Also, please confirm existence of libz:

$ ls -l /usr/lib/libz*
lrwxr-xr-x 1 root wheel   16  9 23  2013 /usr/lib/libz.1.1.3.dylib -> libz.1.2.5.dylib*
-rwxr-xr-x 1 root wheel 166K  9 23  2013 /usr/lib/libz.1.2.5.dylib*
lrwxr-xr-x 1 root wheel   16  9 23  2013 /usr/lib/libz.1.dylib -> libz.1.2.5.dylib*
lrwxr-xr-x 1 root wheel   16  9 23  2013 /usr/lib/libz.dylib -> libz.1.2.5.dylib*

[ghost]

I don't know how to confirm/deny the presence of libz via terminal, but manually looking through /usr/lib shows only one file containing "libz": libz.1.2.5.dylib

My installing command(s) were

"brew tap mpv-player/mpv"

"brew install --HEAD mpv-player/mpv/libass-ct"

"brew install mpv"

I had to authorize the overwrite of some stuff during the second step, but it completed sucessfully.

[henry0312]

I don't know how to confirm/deny the presence of libz via terminal

You can just run find /usr -name "libz.*".

I had to authorize the overwrite of some stuff during the second step

Please tell me more concretely.

[ghost]

/usr/lib/libz.1.1.3.dylib /usr/lib/libz.1.2.5.dylib /usr/lib/libz.1.dylib /usr/lib/libz.dylib /usr/local/lib/libz.a find: /usr/sbin/authserver: Permission denied

I'm afraid that I don't know how to scroll back to find out what I overwrote.

[henry0312]

Do you remember whether you installed /usr/local/lib/libz.a manually or not? And, if you installed it, did you install with Homebrew?

[ghost]

I only started homebrewing about a week ago. Only other thing I've installed via Homebrew is xdelta3. I do know that my brew doctor shows a ton of unbrewed stuff, including /usr/local/lib/libz.a as an unbrewed static library.

[ghost]

You now only need libz, you also need zlib.h in an include directly (/usr/include/, or wherever else).

mpv depends directly on it, so it should be added to its dependencies.

[ghost]

What is the command for installing libz? I've tried the obvious ones and Google isn't helping.

[henry0312]

@utterbull You have to do following things:

1. Solve many problems shown by brew doctor
2. Check the presence of zlib.h as wm4 pointed

[ghost]

I (think) i got it working. Had to delete the old zlib file.