Hi Bruno,
That's the classic "Order of Construction" problem.
To get around it, use this trick:
-- color.h ---
class color {
[...]
static color const& WHITE();
}
------
#include "color.h"
-- color.cpp ---
color const& color::WHITE()
{
static color const rv(255,255,255);
return rv;
}
[...]
------
color.o is generated by "g++ -o color.o -c color.cpp"
-- light.h ---
#include "color.h"
class light {
[...]
static light const& getSUN();
}
------
-- light.cpp ---
#include "light.h"
light const& light::SUN()
{
// the color of SUN is WHITE
static light const rv(..., color::WHITE())
return rv;
}
[...]
------If you want to hide the function, don't use a macro. Keep the static accessor functions (but maybe change their names), and make a static const class variable (like you had before), but make sure the static const class variables are initialized by the appropriate static accessor functions (not by references to the perhaps-not-yet-initialized external variables). Then everything should work okay.
HTH, --Eljay
