homebrew-radio brew doctor

homebrew-radio-swig-brew-doctor.txt

Last login: Wed Nov 14 11:42:13 on ttys003
breguan-air:~ guan$ brew doctor
Warning: "config" scripts exist outside your system or Homebrew directories.
`./configure` scripts often look for *-config scripts to determine if
software packages are installed, and what additional flags to use when
compiling and linking.

Having additional scripts in your path can confuse software installed via
Homebrew if the config script overrides a system or Homebrew provided
script of the same name. We found the following "config" scripts:

    /usr/local/CrossPack-AVR/bin/libusb-config
    /opt/local/bin/ncurses5-config
    /opt/local/bin/ncursesw5-config
    /opt/local/bin/python2-config
    /opt/local/bin/python2.7-config
Warning: gettext was detected in your PREFIX.
The gettext provided by Homebrew is "keg-only", meaning it does not
get linked into your PREFIX by default.

If you `brew link gettext` then a large number of brews that don't
otherwise have a `depends_on 'gettext'` will pick up gettext anyway
during the `./configure` step.

If you have a non-Homebrew provided gettext, other problems will happen
especially if it wasn't compiled with the proper architectures.
Warning: 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.

You may wish to `brew unlink` these brews:

    gettext
Warning: /Library/Frameworks/Mono.framework detected
This can be picked up by CMake's build system and likely cause the build to
fail. You may need to move this file out of the way to compile CMake.
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/libavro.22.0.0.dylib    /usr/local/lib/libftd2xx.1.1.12.dylib    /usr/local/lib/libftd2xx.dylib
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/avro-c.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/libavro.a    /usr/local/lib/libf2c.a
Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:

    ghostscript
    gnutls
    libiconv
    links
    pstoedit
    pstree
    s3cmd
Warning: Some installed formula are missing dependencies.
You should `brew install` the missing dependencies:

    brew install protobuf-c

Run `brew missing` for more details.
guan-air:~ guan$ 

homebrew doctor also gives me a line of warning about:
/usr/local/CrossPack-AVR/bin/libusb-config
and it occurs when i installed CrossPack-AVR. How can i fix it?