Error: Setting DYLD_LIBRARY_PATH can break dynamic linking. You should probably unset it. Error: Some keg-only formula are linked into the Cellar. Linking a keg-only formula, such as gettext, into the cellar with brew link f will cause other formulae to detect them during the ./configure step. This may cause problems when compiling those other formulae.
Binaries provided by keg-only formulae may override system binaries with other strange results.
This is asking you to unset your Dynamic Loading Library Path. You can do this by finding out where you set it and removing it. Most likely, you have a line in your ~/.bashrc or ~/.bash_profile that looks like export DYLD_LIBRARY_PATH=/some/path:$DYLD_LIBRARY_PATH
You may wish to brew unlink these brews:
libxml2
When Brew links, it's creating a symlink to the installation. It's how you can have python2.6. python2.7 installed but python will run one of them.
brew unlink libxml2
Error: Unbrewed dylibs were found in /usr/local/lib. If you didn't put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted.
Unexpected dylibs: /usr/local/lib/libcharset.1.dylib /usr/local/lib/libfreetype.6.dylib /usr/local/lib/libjpeg.8.dylib /usr/local/lib/liblcms.1.0.19.dylib /usr/local/lib/libMagickCore.4.dylib /usr/local/lib/libMagickWand.4.dylib /usr/local/lib/libpng15.15.dylib /usr/local/lib/libtiff.3.dylib /usr/local/lib/libtiffxx.3.dylib /usr/local/lib/libwmf-0.2.7.1.0.dylib /usr/local/lib/libwmflite-0.2.7.0.1.dylib Error: Unbrewed .la files were found in /usr/local/lib. If you didn't put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted.
Unexpected .la files: /usr/local/lib/libcharset.la /usr/local/lib/libfreetype.la /usr/local/lib/libjpeg.la /usr/local/lib/liblcms.la /usr/local/lib/libMagickCore.la /usr/local/lib/libMagickWand.la /usr/local/lib/libpng15.la /usr/local/lib/libtiff.la /usr/local/lib/libtiffxx.la /usr/local/lib/libwmf.la /usr/local/lib/libwmflite.la Error: Unbrewed .pc files were found in /usr/local/lib/pkgconfig. If you didn't put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted.
Unexpected .pc files: /usr/local/lib/pkgconfig/freetype2.pc /usr/local/lib/pkgconfig/ImageMagick.pc /usr/local/lib/pkgconfig/lcms.pc /usr/local/lib/pkgconfig/libpng15.pc /usr/local/lib/pkgconfig/MagickCore.pc /usr/local/lib/pkgconfig/MagickWand.pc /usr/local/lib/pkgconfig/Wand.pc Error: Unbrewed static libraries were found in /usr/local/lib. If you didn't put them there on purpose they could cause problems when building Homebrew formulae, and may need to be deleted.
Unexpected static libraries: /usr/local/lib/libcharset.a /usr/local/lib/libfreetype.a /usr/local/lib/libjpeg.a /usr/local/lib/liblcms.a /usr/local/lib/libpng15.a /usr/local/lib/libtiff.a /usr/local/lib/libtiffxx.a /usr/local/lib/libwmf.a /usr/local/lib/libwmflite.a
These are residual files from other installations. You can delete them.
rm FILENAME
Error: You have uncommitted modifications to Homebrew's core. Unless you know what you are doing, you should run: cd /usr/local && git reset --hard
Here, it is telling you that you made modifications to Homebrew files. Luckily, Homebrew is stored in Git version control so you can revert those changes.
cd /usr/local && git reset --hard
Error: Some directories in your path end in a slash. Directories in your path should not end in a slash. This can break other doctor checks. The following directories should be edited: /usr/local/git/bin/
The PATH variable is where your computer searches for programs when you type it in the command line. You can see your path with echo $PATH.
Standards dictate that all the paths in PATH should not end in a slash. Thus, homebrew is asking you to fix it.
nano ~/.bashrc or nano ~/.bash_profile and look for '/usr/local/git/bin/' and remove the trailing slash.
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