On Wed, 22 Jan 2003 07:50:55 -0600
"Jon Berndt" <[EMAIL PROTECTED]> wrote:
> > Wouldn't something like this work?
> >
> > Either:
> >
> > using namespace jsbsim
> >
> > or
> >
> > using jsbsim::FGFDMExec
> > etc...
> >
> > at the top of the files
> >
> > or
> >
> > fdmex = new jsbsim::FGFDMExec
> > etc...
> >
> > everytime its needed.
> >
> > Cheers - Dave
>
>
> You would expect it to, wouldn't you. I added "using namespace JSBSim" at
> the top of JSBSim.hxx as follows:
>
> /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> %%%%%%
> FORWARD DECLARATIONS
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> %%%%*/
>
> #include <simgear/misc/props.hxx>
>
> #include <FDM/JSBSim/FGFDMExec.h>
>
> using namespace JSBSim;
>
> class FGState;
> class FGAtmosphere;
> class FGFCS;
> class FGPropulsion;
> class FGMassBalance;
> class FGAerodynamics;
> class FGInertial;
> class FGAircraft;
> class FGTranslation;
> class FGRotation;
> class FGPosition;
> class FGAuxiliary;
> class FGOutput;
> class FGInitialCondition;
>
> But, I get this when I try and compile:
>
> g++ -DHAVE_CONFIG_H -I. -I. -I../../../src/Include -I../../.. -I../../../s
> rc -DFGFS -c -o JSBSim.o `test -f 'JSBSim.cxx' || echo './'`JSBSim.cxx
> In file included from JSBSim.cxx:63:
> JSBSim.hxx:218: syntax error before `*'
> JSBSim.hxx:221: syntax error before `*'
> JSBSim.hxx:222: syntax error before `*'
> JSBSim.hxx:223: syntax error before `*'
> JSBSim.hxx:224: syntax error before `*'
> JSBSim.hxx:225: syntax error before `*'
> JSBSim.hxx:226: syntax error before `*'
> JSBSim.hxx:227: syntax error before `*'
> JSBSim.hxx:228: syntax error before `*'
> JSBSim.hxx:229: syntax error before `*'
> JSBSim.hxx:230: syntax error before `*'
> JSBSim.hxx:231: syntax error before `*'
> JSBSim.cxx: In method `FGJSBsim::FGJSBsim(double)':
> JSBSim.cxx:81: parse error before `='
> JSBSim.cxx:82: `Atmosphere' undeclared (first use this function)
> JSBSim.cxx:82: (Each undeclared identifier is reported only once
> JSBSim.cxx:82: for each function it appears in.)
> JSBSim.cxx:83: `FCS' undeclared (first use this function)
> JSBSim.cxx:84: `MassBalance' undeclared (first use this function)
> ...
> ...
Forward declarations must be in a namespace:
namespace JSBSim {
class FGState;
class FGAtmosphere;
class FGFCS;
class FGPropulsion;
class FGMassBalance;
class FGAerodynamics;
class FGInertial;
class FGAircraft;
class FGTranslation;
class FGRotation;
class FGPosition;
class FGAuxiliary;
class FGOutput;
class FGInitialCondition;
}
using namespace JSBSim;
...
Just updated my FlightGear JSBSim sources with namespace versions and am happy
to announce a clean compile.
Cheers,
Bernie
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