Error installing HHVM at the very end CentOS 6.6 - centos6

Question

Carefully followed the inscructions at: https://github.com/facebook/hhvm/wiki/Building-and-installing-HHVM-on-CentOS-6.6
Get to the very end and it fails. Rather frustrating. Any idea what the problem might be?
-- Found LIBGLOG: /usr/local/lib/libglog.so
-- Could NOT find LIBINOTIFY (missing: LIBINOTIFY_LIBRARY)
-- Could NOT find LIBICONV (missing: LIBICONV_LIBRARY)
-- Performing Test LIBICONV_CONST
-- Performing Test LIBICONV_CONST - Failed
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.23")
-- Found LIBMEMCACHED: /usr/local/lib/libmemcached.so
-- Found PCRE: /usr/lib64/libpcre.so
-- Performing Test SYSTEM_PCRE_HAS_JIT
-- Performing Test SYSTEM_PCRE_HAS_JIT - Failed
-- System PCRE does not have JIT enabled - will use hhvm-third-party/pcre
-- Found libevent: /usr/lib64/libevent.so
-- Looking for evhttp_bind_socket_with_fd
-- Looking for evhttp_bind_socket_with_fd - not found
-- Could NOT find LibUODBC (missing: LIBODBC_LIBRARIES LIBODBC_INCLUDE_DIRS)
-- Found CURL: /usr/lib64/libcurl.so (found version "7.19.7")
-- Looking for curl_multi_select
-- Looking for curl_multi_select - not found
-- Looking for curl_multi_wait
-- Looking for curl_multi_wait - not found
-- Found LibXml2: /usr/lib64/libxml2.so (found version "2.7.6")
-- Found LibXslt: /usr/lib64/libxslt.so (found version "1.1.26")
-- Found EXPAT: /usr/lib64/libexpat.so (found version "2.0.1")
-- Using third-party bundled libsqlite3
-- Could NOT find DOUBLE_CONVERSION (missing: DOUBLE_CONVERSION_LIBRARY DOUBLE_CONVERSION_INCLUDE_DIR)
-- Using third-party bundled double-conversion
-- Could NOT find LZ4 (missing: LZ4_LIBRARY LZ4_INCLUDE_DIR)
-- Using third-party bundled LZ4
-- Could NOT find FastLZ (missing: FASTLZ_LIBRARY FASTLZ_INCLUDE_DIR)
-- Using third-party bundled fastlz
-- Could NOT find LIBZIP (missing: LIBZIP_LIBRARY LIBZIP_INCLUDE_DIR_ZIP LIBZIP_INCLUDE_DIR_ZIPCONF)
-- Using third-party bundled libzip
-- Found ICU header files in /usr/include
-- Found ICU libraries: /usr/lib64/libicuuc.so
-- Performing Test JEMALLOC_VERSION_MINIMUM
-- Performing Test JEMALLOC_VERSION_MINIMUM - Success
-- Found jemalloc: /usr/local/lib/libjemalloc.so
-- Found Intel TBB
CMake Error at CMake/FindMcrypt.cmake:31 (message):
Could NOT find mcrypt library.
Call Stack (most recent call first):
CMake/HPHPFindLibs.cmake:306 (find_package)
CMake/HPHPSetup.cmake:125 (include)
third-party/CMakeLists.txt:18 (include)
-- Configuring incomplete, errors occurred!
See also "/usr/local/hhvm/CMakeFiles/CMakeOutput.log".
See also "/usr/local/hhvm/CMakeFiles/CMakeError.log".
gahoachma#remote [/usr/local/hhvm]# sudo sed -i -e 's/$/..\/..\/..\/lib\/libmemcached.so/g' hphp/hhvm/CMakeFiles/hhvm.dir/link.txt
sed: can't read hphp/hhvm/CMakeFiles/hhvm.dir/link.txt: No such file or directory
gahoachma#remote [/usr/local/hhvm]# sudo sed -i -e 's/$/..\/..\/..\/lib\/libmemcached.so/g' hphp/hhvm/CMakeFiles/hhvm.dir/link.txt
sed: can't read hphp/hhvm/CMakeFiles/hhvm.dir/link.txt: No such file or directory
gahoachma#remote [/usr/local/hhvm]# sudo make
make: *** No targets specified and no makefile found. Stop.
gahoachma#remote [/usr/local/hhvm]# make
make: *** No targets specified and no makefile found. Stop.
gahoachma#remote [/usr/local/hhvm]# hhvm --version
-bash: hhvm: command not found
gahoachma#remote [/usr/local/hhvm]#