Cross Compilation of C++ Code?

[fdm]

In a function I have:


namespace Validation
{
template<typename T, typename M, typename I, typename R, typename P>
void compute_metric(typename P:ointer & imageF, typename P:ointer &
imageM, R & region, double & value) {
typedef T TransformType;
typedef M MetricType;
typedef I InterpolatorType;

TransformType:ointer transform = TransformType::New();
MetricType:ointer metric = MetricType::New();
InterpolatorType:ointer interpolator = InterpolatorType::New();



On windows vista 64 in Visual Studio this compiles fine. But in Ubuntu 9.04
I get the error:

compute_metric.h:22: error: expected `;' before 'transform'
compute_metric.h:23: error: expected `;' before 'metric'
compute_metric.h:24: error: expected `;' before 'interpolator'

corresponding to the last three lines in the above code. I have made sure
that inlcudes are setup correctly, any ideas?

I have previously experienced that various statements are allowed in VS that
is not allowed on Linux.

 

[Michael Doubez]

In a function I have:

namespace Validation
{
  template<typename T, typename M, typename I, typename R, typename P>
  void compute_metric(typename P:ointer & imageF, typename P:ointer &
imageM, R & region, double & value) {
    typedef T                   TransformType;
    typedef M                   MetricType;
    typedef I                   InterpolatorType;

    TransformType:ointer transform = TransformType::New();
    MetricType:ointer metric = MetricType::New();
    InterpolatorType:ointer interpolator = InterpolatorType::New();

Those are type dependant name, shouldn't they require a 'typename'
before:
typename TransformType:ointer transform = TransformType::New
();
typename MetricType:ointer metric = MetricType::New();
typename InterpolatorType:ointer interpolator = InterpolatorType::New
();

 

[fdm]

In a function I have:

namespace Validation
{
template<typename T, typename M, typename I, typename R, typename P>
void compute_metric(typename P:ointer & imageF, typename P:ointer &
imageM, R & region, double & value) {
typedef T TransformType;
typedef M MetricType;
typedef I InterpolatorType;

TransformType:ointer transform = TransformType::New();
MetricType:ointer metric = MetricType::New();
InterpolatorType:ointer interpolator = InterpolatorType::New();

Those are type dependant name, shouldn't they require a 'typename'
before:
typename TransformType:ointer transform = TransformType::New
();
typename MetricType:ointer metric = MetricType::New();
typename InterpolatorType:ointer interpolator = InterpolatorType::New
();



Yes I just realized that, wierd that it is allowed NOT to specify 'typename'
in VS while its mandatory in linux.

 

[Vladimir Jovic]

Those are type dependant name, shouldn't they require a 'typename'
before:
typename TransformType:ointer transform = TransformType::New
();
typename MetricType:ointer metric = MetricType::New();
typename InterpolatorType:ointer interpolator = InterpolatorType::New
();



Yes I just realized that, wierd that it is allowed NOT to specify
'typename' in VS while its mandatory in linux.

You got that wrong: it is required in c++
M$ got that wrong

 

[Michael Doubez]

You got that wrong: it is required in c++
M$ got that wrong

It is required by VC++ since Visual Studio 2003 (dixit msdn).
And for gcc, since version 3.4 which is not all that far away (April
18, 2004 from http://gcc.gnu.org/releases.html).

 

[Vladimir Jovic]

It is required by VC++ since Visual Studio 2003 (dixit msdn).
And for gcc, since version 3.4 which is not all that far away (April
18, 2004 from http://gcc.gnu.org/releases.html).

So, you are saying the OP is using previous a compiler from previous
century.
Both 2003 and 2004 were long time ago

 

[Michael Doubez]

So, you are saying the OP is using previous a compiler from previous
century.

Or he is using compilation options that disable those checks.

Both 2003 and 2004 were long time ago

Better than VC6 but VC6 is still in use.