brew-doctor-2011-08-19.txt

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/libassuan-pth.a
    /usr/local/lib/libassuan.a

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/libasprintf.la
    /usr/local/lib/libcharset.la
    /usr/local/lib/libgcrypt.la
    /usr/local/lib/libgettextlib.la
    /usr/local/lib/libgettextpo.la
    /usr/local/lib/libgettextsrc.la
    /usr/local/lib/libiconv.la
    /usr/local/lib/libintl.la
    /usr/local/lib/libksba.la
    /usr/local/lib/libpth.la
    /usr/local/lib/libusb-1.0.la
    /usr/local/lib/libusb.la

$GREP_OPTIONS was set to "--color=auto".
Having $GREP_OPTIONS set can cause CMake builds to fail.

/Library/Frameworks/Mono.framework detected

This can be picked up by Cmake's build system and likey cause the
build to fail, finding improper header files for libpng for instance.