brew config

$ brew --config

HOMEBREW_VERSION: 0.9.5
ORIGIN: https://github.com/Homebrew/homebrew.git
HEAD: bbcfaeef8bea0046dcd5c818db8b48031c70ab12
HOMEBREW_PREFIX: /Users/<user>/Developer
HOMEBREW_CELLAR: /Users/<user>/Developer/Cellar
CPU: dual-core 64-bit penryn
OS X: 10.9.2-x86_64
CLT: 5.1.0.0.1.1396320587
Clang: 5.1 build 503
X11: N/A
System Ruby: 1.8.7-358
Perl: /usr/bin/perl
Python: /usr/bin/python
Ruby: /usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby

brew doctor

$ brew doctor

Warning: A .pydistutils.cfg file was found in $HOME, which may cause Python
builds to fail. See:
  http://bugs.python.org/issue6138
  http://bugs.python.org/issue4655

Warning: Your Homebrew is not installed to /usr/local
You can install Homebrew anywhere you want, but some brews may only build
correctly if you install in /usr/local. Sorry!

brew install mkvtoolnix

$ brew install -v mkvtoolnix 2>&1

==> Downloading http://www.bunkus.org/videotools/mkvtoolnix/sources/mkvtoolnix-6.9.1.tar.xz
Already downloaded: /Library/Caches/Homebrew/mkvtoolnix-6.9.1.tar.xz
==> Verifying mkvtoolnix-6.9.1.tar.xz checksum
/Users/<user>/Developer/opt/xz/bin/xz -dc "/Library/Caches/Homebrew/mkvtoolnix-6.9.1.tar.xz" | tar xf - 
==> ./configure --disable-debug --prefix=/Users/<user>/Developer/Cellar/mkvtoolnix/6.9.1 --disable-gui --disable-wxwidgets --without-curl --with-boost=/Users/<user>/Developer/opt/boost
checking build system type... x86_64-apple-darwin13.1.0
checking host system type... x86_64-apple-darwin13.1.0
checking target system type... x86_64-apple-darwin13.1.0
checking for gcc... clang
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether clang accepts -g... yes
checking for clang option to accept ISO C89... none needed
checking whether clang and cc understand -c and -o together... yes
checking how to run the C preprocessor... clang -E
checking whether we are using the GNU C++ compiler... yes
checking whether clang++ accepts -g... yes
checking whether make sets $(MAKE)... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking for ranlib... ranlib
checking for strip... strip
checking for ar... ar
checking for ld... ld
checking for pkg-config... /Users/<user>/Developer/opt/pkg-config/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for inttypes.h... (cached) yes
checking for stdint.h... (cached) yes
checking for sys/types.h... (cached) yes
checking sys/syscall.h usability... yes
checking sys/syscall.h presence... yes
checking for sys/syscall.h... yes
checking stropts.h usability... no
checking stropts.h presence... no
checking for stropts.h... no
checking for vsscanf... yes
checking for syscall... yes
checking gcc version... 4.2.1
checking for support for the "-std=c++11"/"-std=c++0x" flag... -std=c++11
checking for support for C++11 feature "initializer lists"... yes
checking for support for C++11 feature "range-based 'for'"... yes
checking for support for C++11 feature "right angle brackets"... yes
checking for support for C++11 feature "'auto' keyword"... yes
checking for support for C++11 feature "lambda functions"... yes
checking for support for C++11 feature "nullptr"... yes
checking for support for C++11 feature "tuples"... yes
checking compiler is clang... yes
checking whether the byte order is big-endian... no
checking if being compiled with mingw32... no
checking for int64_t... yes
checking for uint64_t... yes
checking size of int... 4
checking size of long... 8
checking size of long long... 8
checking for PRId64 and PRIu64... yes
checking iconv.h usability... yes
checking iconv.h presence... yes
checking for iconv.h... yes
checking for iconv... yes
checking for iconv declaration... 
         extern size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
checking for nl_langinfo... yes
checking for ogg_sync_init in -logg... no
configure: error: Could not find the Ogg library
==> Configuration
HOMEBREW_VERSION: 0.9.5
HEAD: bbcfaeef8bea0046dcd5c818db8b48031c70ab12
HOMEBREW_PREFIX: /Users/<user>/Developer
CPU: dual-core 64-bit penryn
OS X: 10.9.2-x86_64
CLT: 5.1.0.0.1.1396320587
X11: N/A
==> ENV
HOMEBREW_CC: clang
HOMEBREW_CXX: clang++
MAKEFLAGS: -j2
CMAKE_PREFIX_PATH: /Users/<user>/Developer
CMAKE_INCLUDE_PATH: /usr/include/libxml2:/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers
CMAKE_LIBRARY_PATH: /System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries
PKG_CONFIG_PATH: /Users/<user>/Developer/opt/xz/lib/pkgconfig:/Users/<user>/Developer/opt/libogg/lib/pkgconfig:/Users/<user>/Developer/opt/libvorbis/lib/pkgconfig
PKG_CONFIG_LIBDIR: /usr/lib/pkgconfig:/Users/<user>/Developer/Library/ENV/pkgconfig/10.9
ACLOCAL_PATH: /Users/<user>/Developer/share/aclocal
PATH: /usr/bin:/Users/<user>/Developer/Library/ENV/4.3:/Users/<user>/Developer/opt/xz/bin:/Users/<user>/Developer/opt/pkg-config/bin:/usr/bin:/bin:/usr/sbin:/sbin

Error: mkvtoolnix 6.9.1 did not build
Logs:
     /Users/<user>/Library/Logs/Homebrew/mkvtoolnix/01.configure
     /Users/<user>/Library/Logs/Homebrew/mkvtoolnix/config.log