In the Ubuntu compiler problem

[darcyg]

In the Linux platform compiler error
:/works/projects/cppprojs/Caramel$ scons
scons: Reading SConscript files ...
Checking whether the C compiler works(cached) yes
Checking whether the C++ compiler works(cached) yes
scons: done reading SConscript files.
scons: Building targets ...
CXX src/Value.cpp
In file included from include/Caramel/Value/NamedValues.h:8:0,
from src/Value/NamedValuesImpl.h:9,
from src/Value.cpp:5:
include/Caramel/Value/Detail/NamedValueRef.h:70:20: error: ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Int64)’ cannot be overloaded
NamedValueRef& operator=( Int64 v );
^
include/Caramel/Value/Detail/NamedValueRef.h:68:20: error: with ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Long)’
NamedValueRef& operator=( Long v );
^
include/Caramel/Value/Detail/NamedValueRef.h:71:20: error: ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Uint64)’ cannot be overloaded
NamedValueRef& operator=( Uint64 v );
^
include/Caramel/Value/Detail/NamedValueRef.h:69:20: error: with ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Ulong)’
NamedValueRef& operator=( Ulong v );
^
src/Value.cpp:601:16: error: redefinition of ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Int64)’
NamedValueRef& NamedValueRef::operator=( Int64 value )
^
src/Value.cpp:579:16: error: ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Long)’ previously defined here
NamedValueRef& NamedValueRef::operator=( Long value )
^
src/Value.cpp:612:16: error: redefinition of ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Uint64)’
NamedValueRef& NamedValueRef::operator=( Uint64 value )
^
src/Value.cpp:590:16: error: ‘Caramel::Detail::NamedValueRef& Caramel::Detail::NamedValueRef::operator=(Caramel::Ulong)’ previously defined here
NamedValueRef& NamedValueRef::operator=( Ulong value )
^
scons: *** [obj/debug/Value.o] Error 1
scons: building terminated because of errors.
:/works/projects/cppprojs/Caramel$