brew doctor

gistfile1.txt

$ brew doctor
Warning: gettext files detected at a system prefix
These files can cause compilation and link failures, especially if they
are compiled with improper architectures. Consider removing these files:
    /usr/local/include/libintl.h

Warning: 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/libcdt.5.dylib
    /usr/local/lib/libcgraph.6.dylib
    /usr/local/lib/libglyr.1.1.0.dylib
    /usr/local/lib/libgvc.6.dylib
    /usr/local/lib/libgvpr.2.dylib
    /usr/local/lib/libpathplan.4.dylib
    /usr/local/lib/libtorrent-rasterbar.7.dylib
    /usr/local/lib/libxdot.4.dylib
    /usr/local/lib/libxml2.2.dylib

Warning: 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/libintl.la
    /usr/local/lib/libtorrent-rasterbar.la
    /usr/local/lib/libxml2.la

Warning: 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/dbus-python.pc
    /usr/local/lib/pkgconfig/libcdt.pc
    /usr/local/lib/pkgconfig/libcgraph.pc
    /usr/local/lib/pkgconfig/libglyr.pc
    /usr/local/lib/pkgconfig/libgvc.pc
    /usr/local/lib/pkgconfig/libgvpr.pc
    /usr/local/lib/pkgconfig/libpathplan.pc
    /usr/local/lib/pkgconfig/libtorrent-rasterbar.pc
    /usr/local/lib/pkgconfig/libxdot.pc
    /usr/local/lib/pkgconfig/libxml-2.0.pc

Warning: 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/libintl.a
    /usr/local/lib/libtorrent-rasterbar.a
    /usr/local/lib/libxml2.a

Warning: You have a curlrc file
If you have trouble downloading packages with Homebrew, then maybe this
is the problem? If the following command doesn't work, then try removing
your curlrc:
  curl http://github.com