Unable to compile

[tomlukeywood]

I have the latest version of SFML installed, ruby, git and rake yet when i try and compile with rake i get this output:
./ext/rbsfml/base.cpp:33:14: error: ‘rb_cFixnum’ was not declared in this scope
Value Fixnum(rb_cFixnum);
^
rake aborted!
Command failed with status (1): [g++ -std=c++11 -I/usr/local/include/ruby...]
/tmp/rbSFML/Rakefile:132:in block in compile_o' /tmp/rbSFML/Rakefile:128:in compile_o'
/tmp/rbSFML/Rakefile:216:in `block in <top (required)>'
Tasks: TOP => default => rbsfml
(See full trace by running task with --trace)

Dose anyone know what could be going wrong?

[dpblnt]

Same here on gentoo with media-libs/libsfml-2.5.1:0/2.5

Compiling ./ext/rbsfml/base.cpp
In file included from ./ext/rbsfml/value.hpp:147,
from ./ext/rbsfml/base.hpp:26,
from ./ext/rbsfml/base.cpp:21:
./ext/rbsfml/value.inc: In member function ‘ReturnType rb::Value::call(Args ...)’:
./ext/rbsfml/value.inc:51:93: error: expected primary-expression before ‘>’ token
VALUE returnValue = rb_funcall(myValue, sym, sizeof...(args), (Value::create(args).to())...);
^
./ext/rbsfml/value.inc:51:95: error: expected primary-expression before ‘)’ token
VALUE returnValue = rb_funcall(myValue, sym, sizeof...(args), (Value::create(args).to())...);
^
./ext/rbsfml/value.inc: In member function ‘void rb::Value::setVar(ValueType)’:
./ext/rbsfml/value.inc:59:57: error: expected primary-expression before ‘>’ token
rb_ivar_set(myValue, sym, Value::create(value).to());
^
./ext/rbsfml/value.inc:59:59: error: expected primary-expression before ‘)’ token
rb_ivar_set(myValue, sym, Value::create(value).to());
^
./ext/rbsfml/base.cpp: At global scope:
./ext/rbsfml/base.cpp:33:14: error: ‘rb_cFixnum’ was not declared in this scope
Value Fixnum(rb_cFixnum);
^~~~~~~~~~
./ext/rbsfml/base.cpp:33:14: note: suggested alternative: ‘Fixnum’
Value Fixnum(rb_cFixnum);
^~~~~~~~~~
Fixnum
rake aborted!
Command failed with status (1): [x86_64-pc-linux-gnu-g++ -std=c++11 -I/us...]
/usr/local/src/rbSFML/Rakefile:132:in block in compile_o' /usr/local/src/rbSFML/Rakefile:128:in compile_o'
/usr/local/src/rbSFML/Rakefile:216:in `block in <top (required)>'
Tasks: TOP => default => rbsfml
(See full trace by running task with --trace)