build better gcc on CentOSucks

CMakeLists.txt

cmake_minimum_required(VERSION 2.4)

add_custom_target(do_always ALL COMMAND yum -y install cmake git gcc gcc-c++ openssl-devel libtool autoconf flex bison zip)

include (ExternalProject)

ExternalProject_add(gmp
	URL http://packages.strcpy.net/gmp-5.1.3.tar.bz2
	UPDATE_COMMAND ""
	BUILD_IN_SOURCE 1
	CONFIGURE_COMMAND ./configure --enable-cxx
	BUILD_COMMAND make install
)

ExternalProject_add(mpfr
	DEPENDS gmp
	URL http://packages.strcpy.net/mpfr-3.1.2.tar.bz2
	UPDATE_COMMAND ""
	BUILD_IN_SOURCE 1
	CONFIGURE_COMMAND ./configure --with-gmp=/usr/local
	BUILD_COMMAND make install
)

ExternalProject_add(mpc
	DEPENDS gmp
	DEPENDS mpfr
	URL http://packages.strcpy.net/mpc-1.0.2.tar.gz
	UPDATE_COMMAND ""
	BUILD_IN_SOURCE 1
	CONFIGURE_COMMAND ./configure --with-gmp=/usr/local --with-mpfr=/usr/local
	BUILD_COMMAND make install
)

ExternalProject_add(gcc
	DEPENDS gmp
	DEPENDS mpfr
	DEPENDS mpc
	URL http://packages.strcpy.net/gcc-4.8.2.tar.bz2
	UPDATE_COMMAND ""
	BUILD_IN_SOURCE 1
	CONFIGURE_COMMAND ./configure --with-gmp=/usr/local --with-mpfr=/usr/local --with-mpc=/usr/local --prefix=/usr/local --disable-werror --disable-multilib
	BUILD_COMMAND make
	INSTALL_COMMAND make install
)