Mono MonoDevelop在CentOS 6上安装失败

我在CentOS 6.4 64位上这样做：

yum install bison gettext glib2 freetype fontconfig libpng libpng-devel libX11 libX11-devel glib2-devel libgdi* libexif glibc-devel urw-fonts java unzip gcc gcc-c++ automake autoconf libtool make bzip2 wget

cd /usr/local/src

wget http://download.mono-project.com/sources/mono/mono-3.4.0.tar.bz2

tar jxf mono-3.4.0.tar.bz2

cd mono-3.4.0

./configure --prefix=/opt/mono

make && make install

yum install glib2-devel libX11-devel pixman-devel fontconfig-devel freetype-devel libexif-devel libjpeg-devel libtiff-devel libpng-devel giflib-devel

cd /usr/src

wget http://download.mono-project.com/sources/libgdiplus/libgdiplus-2.10.9.tar.bz2

tar -xvjf libgdiplus-2.10.9.tar.bz2

cd libgdiplus-2.10.9

./configure --prefix=/opt/mono

make && make install

yum install gtk2-devel libglade2-devel

cd /usr/src

PKG_CONFIG_PATH=/opt/mono/lib/pkgconfig

export PKG_CONFIG_PATH

wget http://download.mono-project.com/sources/gtk-sharp212/gtk-sharp-2.12.21.tar.gz

tar -vzxf gtk-sharp-2.12.21.tar.gz

cd gtk-sharp-2.12.21

./configure --prefix=/opt/mono

make && make install

yum install pango-devel atk-devel libgnome-devel libgnomecanvas-devel libgnomeui-devel git svn libtool

cd /usr/src

git clone git://github.com/mono/gnome-sharp

cd gnome-sharp

./bootstrap-2.24 --prefix=/opt/mono

make && make install

但gtk2和之后的安装失败：

正在检查MONO_依赖项。。。对 正在检查gacutil。。。不 配置：错误：未找到gacutil工具。您需要安装mono或.Net SDK

与引导程序相同

我怎样才能修好它

谢谢

# cd /usr/src/gtk-sharp-2.12.21 # export PATH=$PATH:/opt/mono/bin # export PKG_CONFIG_PATH=/opt/mono/lib/pkgconfig # ./configure --prefix=/opt/mono # make # make install #cd/usr/src/gtk-sharp-2.12.21 #导出路径=$PATH:/opt/mono/bin #导出PKG_CONFIG_PATH=/opt/mono/lib/pkgconfig #./configure--prefix=/opt/mono #制造 #安装