help with c

[John]

Hi,

I'm trying to compile the opennurbs toolkit and keep getting the
messages shown below. I don't know much about c++, but I would like to
use this package. Any help on getting these errors worked out would be
greatly appreciated. My system is Linux and gcc 4.1.1. Thanks.

John
==============================================
g++ -g -Wall -Wmissing-prototypes -D_GNU_SOURCE -I. -c
opennurbs_3dm_attributes.cpp -o opennurbs_3dm_attributes.o
cc1plus: warning: command line option "-Wmissing-prototypes" is valid
for C/ObjC but not for C++
opennurbs_nurbscurve.h:40: error: extra qualification `ON_NurbsCurve::'
on member `New'
opennurbs_nurbscurve.h:43: error: extra qualification `ON_NurbsCurve::'
on member `New'
opennurbs_nurbscurve.h:46: error: extra qualification `ON_NurbsCurve::'
on member `New'
==============================================
The pertaining lines in the file opennurbs_nurbscurve.h are

class ON_NurbsCurve;
class ON_CLASS ON_NurbsCurve : public ON_Curve
{
ON_OBJECT_DECLARE(ON_NurbsCurve);

public:
/*
Description:
Use ON_NurbsCurve::New(...) instead of new ON_NurbsCurve(...)
Returns:
Pointer to an ON_NurbsCurve. Destroy by calling delete.
Remarks:
See static ON_Brep* ON_Brep::New() for details.
*/
static ON_NurbsCurve* ON_NurbsCurve::New();
static ON_NurbsCurve* ON_NurbsCurve::New(
const ON_NurbsCurve& nurbs_curve
);
static ON_NurbsCurve* ON_NurbsCurve::New(
const ON_BezierCurve& bezier_curve
);
static ON_NurbsCurve* ON_NurbsCurve::New(
int dimension,
BOOL bIsRational,
int order,
int cv_count
);

[Alf P. Steinbach]

* John:

>
I'm trying to compile the opennurbs toolkit and keep getting the
messages shown below. I don't know much about c++, but I would like to
use this package. Any help on getting these errors worked out would be
greatly appreciated. My system is Linux and gcc 4.1.1. Thanks.

John
g++ -g -Wall -Wmissing-prototypes -D_GNU_SOURCE -I. -c
opennurbs_3dm_attributes.cpp -o opennurbs_3dm_attributes.o
cc1plus: warning: command line option "-Wmissing-prototypes" is valid
for C/ObjC but not for C++

Seemingly this relates to the two first lines of code presented below.
In C++ you can't derive from an incomplete type such as ON_NurbsCurve.
Are you sure this is actually C++ code?

opennurbs_nurbscurve.h:40: error: extra qualification `ON_NurbsCurve::'
on member `New'
opennurbs_nurbscurve.h:43: error: extra qualification `ON_NurbsCurve::'
on member `New'
opennurbs_nurbscurve.h:46: error: extra qualification `ON_NurbsCurve::'
on member `New'

Here's something Not Quite Right: there should be four of those error
messages, not just three.

==============================================
The pertaining lines in the file opennurbs_nurbscurve.h are

class ON_NurbsCurve;
class ON_CLASS ON_NurbsCurve : public ON_Curve
{
ON_OBJECT_DECLARE(ON_NurbsCurve);

public:
/*
Description:
Use ON_NurbsCurve::New(...) instead of new ON_NurbsCurve(...)
Returns:
Pointer to an ON_NurbsCurve. Destroy by calling delete.
Remarks:
See static ON_Brep* ON_Brep::New() for details.
*/
static ON_NurbsCurve* ON_NurbsCurve::New();

Remove the qualification.

static ON_NurbsCurve* ON_NurbsCurve::New(
const ON_NurbsCurve& nurbs_curve
);

Remove the qualification.

static ON_NurbsCurve* ON_NurbsCurve::New(
const ON_BezierCurve& bezier_curve
);

Remove the qualification.

static ON_NurbsCurve* ON_NurbsCurve::New(
int dimension,
BOOL bIsRational,
int order,
int cv_count
);

Remove the qualification.
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

[John]

Seemingly this relates to the two first lines of code presented below.

In C++ you can't derive from an incomplete type such as ON_NurbsCurve.
Are you sure this is actually C++ code?

I'm not 100% sure it's c++ code, but the associatef file has a .cpp
extension and it certainly looks like c++ code.

>opennurbs_nurbscurve.h:40: error: extra qualification `ON_NurbsCurve::'
on member `New'
opennurbs_nurbscurve.h:43: error: extra qualification `ON_NurbsCurve::'
on member `New'
opennurbs_nurbscurve.h:46: error: extra qualification `ON_NurbsCurve::'
on member `New'

Here's something Not Quite Right: there should be four of those error
messages, not just three.

You are right. There is a fourth error message that got cut off in my
post.

>

>==============================================
The pertaining lines in the file opennurbs_nurbscurve.h are

class ON_NurbsCurve;
class ON_CLASS ON_NurbsCurve : public ON_Curve
{
ON_OBJECT_DECLARE(ON_NurbsCurve);

public:
/*
Description:
Use ON_NurbsCurve::New(...) instead of new ON_NurbsCurve(...)
Returns:
Pointer to an ON_NurbsCurve. Destroy by calling delete.
Remarks:
See static ON_Brep* ON_Brep::New() for details.
*/
static ON_NurbsCurve* ON_NurbsCurve::New();

Remove the qualification.

By "remove the qualification" do you mean comment out the whole line or
remove the New?

Thanks,
John

[Alf P. Steinbach]

* John:

>
By "remove the qualification" do you mean comment out the whole line or
remove the New?

Replace "ON_NurbsCurve::" with "" throughout.
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

[John]

Alf P. Steinbach wrote:

* John:

>>
By "remove the qualification" do you mean comment out the whole line or
remove the New?

Replace "ON_NurbsCurve::" with "" throughout.

Hi Alf,

Thanks. That was the problem. It compiles fine now.

John