configure --show

Using the following configuration to build
------------------------------------------
module Rubinius
  # Make this reload friendly without silly constant defined warnings.
  BUILD_CONFIG = {
    :command_line   => "--system-name=ubuntu-12.04 --default-version=19 --bindir=/usr/bin --includedir=/usr/include/rubinius --libdir=/usr/lib --mandir=/usr/share/man/man1 --gemsdir=/usr/lib/rubinius/gems",
    :which_ruby     => :ruby,
    :build_ruby     => "/usr/bin/ruby1.8",
    :build_rake     => "rake",
    :build_perl     => "perl",
    :llvm           => :prebuilt,
    :llvm_configure => "/tmp/buildd/rubinius-2.0.0pre/vendor/llvm/Release/bin/llvm-config",
    :llvm_version   => "3.2svn",
    :cc             => "gcc",
    :cxx            => "g++",
    :ldshared       => "gcc -shared",
    :ldsharedxx     => "g++ -shared -lstdc++",
    :gcc_major      => "4.6",
    :user_cflags    => "-I/usr/include -fPIC",
    :user_cppflags  => "",
    :user_ldflags   => "-L/usr/lib -Wl,--export-dynamic -lrt -lcrypt -ldl -lpthread -Wl,-rpath=/usr/lib",
    :system_cflags   => "-I/usr/local/include -fPIC",
    :system_cppflags => "",
    :system_ldflags  => "-L/usr/local/lib -Wl,--export-dynamic -lrt -lcrypt -ldl -lpthread -Wl,-rpath=/usr/local/lib",
    :make           => "make",
    :include_dirs   => ["/usr/local/include"],
    :lib_dirs       => ["/usr/local/lib"],
    :defines        => ["HAS_EXECINFO", "HAVE_SPT_REUSEARGV", "HAVE_CLOCK_GETTIME", "HAVE_NL_LANGINFO", "HAVE_POSIX_FADVISE", "HAVE_TM_GMTOFF", "HAVE_TM_ZONE", "HAVE_TIMEZONE", "HAVE_TZNAME", "HAVE_DAYLIGHT", "HAVE_ALLOCA_H", "HAVE_STRING_H", "HAVE_SYS_TIME_H", "HAVE_SYS_TIMES_H", "HAVE_SYS_TYPES_H", "HAVE_UNISTD_H", "HAVE_STDARG_H"],
    :curses         => "curses",
    :host           => "x86_64-unknown-linux-gnu",
    :cpu            => "x86_64",
    :vendor         => "unknown",
    :os             => "linux-gnu",
    :little_endian  => true,
    :sizeof_long    => 8,
    :x86_32         => false,
    :x86_64         => true,
    :dtrace         => false,
    :fibers         => true,
    :sourcedir      => "/tmp/buildd/rubinius-2.0.0pre",
    :stagingdir     => "/tmp/buildd/rubinius-2.0.0pre/staging",
    :prefixdir      => "",
    :bindir         => "/usr/bin",
    :libdir         => "/tmp/buildd/rubinius-2.0.0pre/lib",
    :runtimedir     => "/tmp/buildd/rubinius-2.0.0pre/runtime",
    :kerneldir      => "/tmp/buildd/rubinius-2.0.0pre/kernel",
    :sitedir        => "/tmp/buildd/rubinius-2.0.0pre/site",
    :vendordir      => "/tmp/buildd/rubinius-2.0.0pre/vendor",
    :include18dir   => "/usr/include/rubinius/18",
    :include19dir   => "/usr/include/rubinius/19",
    :include20dir   => "/usr/include/rubinius/20",
    :mandir         => "/usr/share/man/man1",
    :gemsdir        => "/usr/lib/rubinius/gems",
    :program_name   => "rbx",
    :bin_links      => ["ruby", "rake", "gem", "irb", "rdoc", "ri"],
    :use_bin_links  => true,
    :version        => "2.0.0.rc1",
    :libversion     => "2.0",
    :release_date   => "yyyy-mm-dd",
    :config_version => 172,
    :windows        => false,
    :darwin         => false,
    :bsd            => false,
    :linux          => true,
    :version_list   => ["18", "19"],
    :default_version => "19",
    :vendor_zlib    => false,
    :readline       => :c_readline,
  }
end

Setting the following defines for the VM
----------------------------------------
#define RBX_HOST             "x86_64-unknown-linux-gnu"
#define RBX_CPU              "x86_64"
#define RBX_VENDOR           "unknown"
#define RBX_OS               "linux-gnu"
#define RBX_PREFIX_PATH      ""
#define RBX_BIN_PATH         "/usr/bin"
#define RBX_GEMS_PATH        "/usr/lib/rubinius/gems"
#define RBX_RUNTIME_PATH     "/tmp/buildd/rubinius-2.0.0pre/runtime"
#define RBX_KERNEL_PATH      "/tmp/buildd/rubinius-2.0.0pre/kernel"
#define RBX_LIB_PATH         "/tmp/buildd/rubinius-2.0.0pre/lib"
#define RBX_HDR18_PATH       "/usr/include/rubinius/18"
#define RBX_HDR19_PATH       "/usr/include/rubinius/19"
#define RBX_HDR20_PATH       "/usr/include/rubinius/20"
#define RBX_SITE_PATH        "/tmp/buildd/rubinius-2.0.0pre/site"
#define RBX_VENDOR_PATH      "/tmp/buildd/rubinius-2.0.0pre/vendor"
#define RBX_VERSION          "2.0.0.rc1"
#define RBX_LIB_VERSION      "2.0"
#define RBX_LDSHARED         "gcc -shared"
#define RBX_LDSHAREDXX       "g++ -shared -lstdc++"
#define RBX_RELEASE_DATE     "yyyy-mm-dd"
#define RBX_SIZEOF_LONG      8
#define RBX_LLVM_API_VER     302
#define RBX_LIBC             "libc.so.6"
#define RBX_DEFAULT_18       false
#define RBX_DEFAULT_19       true
#define RBX_DEFAULT_20       false
#define RBX_ENABLED_18       1
#define RBX_ENABLED_19       1
#define RBX_LITTLE_ENDIAN    1
#define RBX_HAVE_TR1_HASH    1
#define RBX_LINUX           1
#define RBX_FIBER_ENABLED    1

#define HAS_EXECINFO         1
#define HAVE_SPT_REUSEARGV   1
#define HAVE_CLOCK_GETTIME   1
#define HAVE_NL_LANGINFO     1
#define HAVE_POSIX_FADVISE   1
#define HAVE_TM_GMTOFF       1
#define HAVE_TM_ZONE         1
#define HAVE_TIMEZONE        1
#define HAVE_TZNAME          1
#define HAVE_DAYLIGHT        1
#define HAVE_ALLOCA_H        1
#define HAVE_STRING_H        1
#define HAVE_SYS_TIME_H      1
#define HAVE_SYS_TIMES_H     1
#define HAVE_SYS_TYPES_H     1
#define HAVE_UNISTD_H        1
#define HAVE_STDARG_H        1

gistfile1.txt

Build-Depends: debhelper (>= 7), autotools-dev, libreadline-dev, zlib1g-dev,
 build-essential, libssl-dev, ruby, ruby-dev, texinfo, libgdbm-dev,
 bison, llvm-dev (>= 2.9), libyaml-dev, git-core, libffi-dev, libncurses5-dev

Makefile

PKG_DIR := $(CURDIR)/debian/$(PACKAGE)
BIN_DIR := /usr/bin
MAN_DIR := /usr/share/man/man1
INC_DIR := /usr/include/$(PACKAGE)
LIB_DIR := /usr/lib
GEM_DIR := /usr/lib/rubinius/gems

export FAKEROOT=$(PKG_DIR)

configure: configure-stamp
        dh_testdir
        ./configure \
                --system-name=ubuntu-12.04 \
                --default-version=19 \
                --bindir=$(BIN_DIR) \
                --includedir=$(INC_DIR) \
                --libdir=$(LIB_DIR) \
                --mandir=$(MAN_DIR) \
                --gemsdir=$(GEM_DIR)