RE: [Openexr-devel] Building Visual C++ 2005 for x64 platform

[James Vanderhyde]

All right, I figured out the problem. The problem is that the format of the .map file changes between linked for 32-bit and linked for 64-bit, and the createDLL.cpp program parses the .map file. The format change is this: every symbol in the .map file that has 1, 2, or 3 initial underscore characters has 0, 1, or 2 underscores (respectively) in the 64-bit .map file. Several places in createDLL.cpp, symbols with two initial underscores are skipped. I changed this to one initial underscore and everything links fine in 64-bit.

 

James

 

 

---

From: address@hidden [mailto:address@hidden On Behalf Of James Vanderhyde
Sent: Tuesday, November 20, 2007 1:16 PM
To: address@hidden
Subject: [Openexr-devel] Building Visual C++ 2005 for x64 platform

 

I am trying to build a 64-bit dll of OpenEXR for 64-bit Windows. I’m using Visual Studio 2005 (VC8). I started by downloading the math library (IlmBase) and trying to build the IlmBase solution. I created a configuration for the x64 platform. I had to make a few changes to get the “createDLL” project to compile. I changed the Output Directory and Intermediate Directory to match what the Win32 configuration had. Since the project uses a lot of hard-coded relative paths, these needed to be fixed from Visual Studio’s defaults.

 

This createDLL program runs the linker for the rest of the projects, and it has one line of code that controls the command-line options for the linker. I changed this line to be “X64” instead of “X86.”

 

At this point the “Half” project compiles and links successfully, but when I try to build the “Iex” project I get several linker errors, such as the following:

 

Iex.exp : error LNK2001: unresolved external symbol address@hidden@@

 

All the .lib, .def, and .obj files seem to be OK, so I can’t figure out what the problem is.

 

Does anyone have any tips for me? Thanks.

 

James