Iroffer-dinoex 3.29 debian 7.3 ruby error

user@nsxxxxxxx:~/iroffer/iroffer-dinoex-3.29$ ./Configure -curl -geoip -ruby

Configuring for iroffer-dinoex 3.29
Determining OS... LinuxConfiguring for GeoIP.
Configuring for Curl.
Checking for make... found make
Checking for gcc/cc... found gcc
Seeing if gcc works... yes
Seeing if gcc accepts '-Wall'... yes
Seeing if gcc accepts '-Werror'... yes
Seeing how to define a 16 bit integer... short
Seeing how to define a 32 bit integer... int
Seeing how to define a 64 bit integer... long
Seeing if compiling with standard #include's works... yes
Seeing how large FD_SETSIZE is...
1024
Determining endianness... Little-Endian
Seeing if large file support works... yes
Determing the signedness of 'addrlen'... unsigned
Seeing how to display 64bit using printf... l
Seeing how to display time_t using printf... li
Checking for snprintf()... found
Checking for strcasecmp()... found
Checking for strcasestr()... found
Checking for strsignal()... found
Seeing if 'sys/mman.h' exists... found
Seeing if 'sys/sendfile.h' exists... found
Seeing if 'sys/vfs.h' exists... found
Seeing if 'sys/statfs.h' exists... found
Seeing if 'sys/param.h' exists... found
Seeing if 'sys/mount.h' exists... found
Seeing if 'sys/statvfs.h' exists... found
Checking for statvfs()... found
Checking for statfs()... found
Seeing if 'crypt.h' is needed... not needed
Seeing if '-lcrypt' is needed... needed
Seeing if crypt() works as expected... yes
Checking for chroot()... found
Seeing if NSS library exists (for chroot)... found
Checking for setuid()... found
Checking for getgrouplist()... found
Checking for Linux-style sendfile()... found
Checking for mmap()/munmap()... found
Checking for name of fd limit... RLIMIT_NOFILE
Checking for siginfo_t/sa_sigaction... found
Checking for 'si_code' values... found
Checking for wait() status values... found
Seeing if TOS can be set for IP sockets... yes
Checking for getaddrinfo()... found
Checking for gethostbyname() error values... found
Checking for res_init() ... found
Seeing if GeoIP library exists... found
Seeing if has IPv6 support... found
Seeing if libcurl library exists (for FETCH-Command)... found
Notice: Your 'libcurl' is linked with OpenSSL.
Seeing if OpenSSL library exists... found
Configuring for OpenSSL.
Seeing if libruby library exists (for RUBY-Scripts)... not found
***Disabled the RUBY-extension. If you want to use this feature, please install 'libruby'.***
Creating src/iroffer_config.h... Done
Creating Makefile... Done

Type "make it" to compile
No errors or warnings should appear when compiling, if they do, something is wrong