Pango build error (GTK+3 build) - c

Question

I am building GTK+3 (3.16.6) latest version on my Elementary OS desktop (Ubuntu 12.04) following these installation instructions at GTK website.
I have successfully built and installed the following packages in "/opt/gtk" following the previous link:
Glib-2.44.1
GdkPixBuf-2.31
GOObject-1.44
But when I try to :
./configure --prefix=/opt/gtk
the output is :
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
checking build system type... i686-pc-linux-gnu
checking host system type... i686-pc-linux-gnu
checking for native Win32... no
checking for gcc... gcc
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 gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether gcc understands -c and -o together... yes
checking for style of include used by make... GNU
checking dependency style of gcc... gcc3
checking for c++... c++
checking whether we are using the GNU C++ compiler... yes
checking whether c++ accepts -g... yes
checking dependency style of c++... gcc3
checking for sysconf... yes
checking for getpagesize... yes
checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /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 unistd.h... (cached) yes
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking how to print strings... printf
checking for a sed that does not truncate output... /bin/sed
checking for fgrep... /bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking how to convert i686-pc-linux-gnu file names to i686-pc-linux-gnu format... func_convert_file_noop
checking how to convert i686-pc-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... dlltool
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver #FILE support... #
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for mt... mt
checking if mt is a manifest tool... no
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
checking how to run the C++ preprocessor... c++ -E
checking for ld used by c++... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking whether the c++ linker (/usr/bin/ld) supports shared libraries... yes
checking for c++ option to produce PIC... -fPIC -DPIC
checking if c++ PIC flag -fPIC -DPIC works... yes
checking if c++ static flag -static works... yes
checking if c++ supports -c -o file.o... yes
checking if c++ supports -c -o file.o... (cached) yes
checking whether the c++ linker (/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
configure: creating ./config.lt
config.lt: creating libtool
checking for some Win32 platform... no
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for HARFBUZZ... no
checking for CoreText availability... no
checking for CAIRO... no
configure: error: *** Could not enable any backends.
*** Must have at least one backend to build Pango.
But I have libcairo2-dev and libcairo2 installed through apt-get. I read somewhere that the CoreText and HarfBuzz are available through gnome-core-devel. When I tried to install the package, i got the following error :
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
gnome-core-devel : Depends: gnome-platform-devel (= 1:3.0+6ubuntu3) but it is not going to be installed
Depends: libwnck-3-dev (>= 3.0) but it is not going to be installed
Depends: libmutter-dev (>= 3.0) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Please help me resolve this problem. Thanks in advance.