hcustom error with SIM_SolverBullet

[seth_ro18]

I am trying to compile the SIM_SolverBullet dll with hcustom, but I get the following error:

Creating library SIM_SolverBullet.lib and object SIM_SolverBullet.exp

SIM_SolverBullet.o : error LNK2019: unresolved external symbol "__declspec(dllim

port) public: float __thiscall SIM_BulletData::getCollisionMargin(void)const " (

__imp_?getCollisionMargin@SIM_BulletData@@QBEMXZ) referenced in function "protec

ted: virtual class std::_Tree<class std::_Tmap_traits<int,struct bulletBodystr,s

truct std::less<int>,class std::allocator<struct std::pair<int const ,struct bul

letBodystr> >,0> >::iterator __thiscall SIM_SolverBullet::addBulletBody(class SI

M_Object *)"

It created the .o and .lib files, but somewhere it's adding a __declspec(dllimport) call to the .o file that apparently I do not want. I compiled Bullet with Visual Studio 8 and hcustom is pointing to all the proper libraries. Any ideas where the problem might lie?

Thanks!

[seth_ro18]

Looks like in SIM_API.h (within the Houdini toolkit), I had to comment out the __declspec lines, since hcustom did not seem to like them.

#if defined(WIN32) && !defined(MAKING_STATIC)

#ifdef EXPORT_SIM

#define SIM_API //__declspec(dllexport)

#else

#define SIM_API //__declspec(dllimport)

#endif

Now it compiles the dll.

[Jason]

Well done on solving the problem. I wonder why this is a problem?

Looks like in SIM_API.h (within the Houdini toolkit), I had to comment out the __declspec lines, since hcustom did not seem to like them.

#if defined(WIN32) && !defined(MAKING_STATIC)

#ifdef EXPORT_SIM

#define SIM_API //__declspec(dllexport)

#else

#define SIM_API //__declspec(dllimport)

#endif

Now it compiles the dll.

[malexander]

Classes within external HDK libraries shouldn't have the *_API macro applied to them. This macro is only for internal Houdini libraries. ie, the correct code is:

class SIM_SolverBullet : public ...

   (and not)

class SIM_API SIM_SolverBullet : public ...

You should revert the SIM_API.h changes after the above change.

[seth_ro18]

Thanks, that clears things up. My fix did feel a bit too hacky.

Classes within external HDK libraries shouldn't have the *_API macro applied to them. This macro is only for internal Houdini libraries.