No subject

hing=20
that should cause the problem you're facing here.

However, from the error message that gcc gives, it can be assumed that =
there=20
is a problem in the library you're trying to use:

When using C code from a C++ library, the C code must be wrapped with a=


  extern "C"

declaration.

This program:

=09struct bar;
=09void foo(bar*);

=09int main() {
=09=09bar* b;
=09=09foo(b);
=09}

will give the error:
=09x.cpp:(.text+0x10): undefined reference to `foo(bar*)'
when compiled as c++.

Contrary this program:

=09extern "C" {
=09=09struct bar;
=09=09void foo(struct bar*);
=09}

=09int main() {
=09=09bar* b;
=09=09foo(b);
=09}


will result in the error:
=09x.cpp:(.text+0x10): undefined reference to `foo'

Note that the former refers to a mangled c++ symbol while the latter re=
fers to=20
an unmangled C symbol.

Usually, a C header file should include the following lines:

=09#ifdef __cplusplus
=09extern "c" {
=09#endif

=09=09// normal C-Code here

=09#ifdef __cplusplus
=09}
=09#endif

As a workaround, you could write a file named ccv.hpp and put this cont=
ent=20
into it:

=09extern "C" {
=09#include "ccv.h"
=09}

Then go through your C++ sources and change every include of "ccv.h" to=
=20
"ccv.hpp".

Hope this helps,
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