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MathLink with MS Visual Studio 2008

• To: mathgroup at smc.vnet.net
• Subject: [mg85217] MathLink with MS Visual Studio 2008
• From: "Steve Luttrell" <steve at _removemefirst_luttrell.org.uk>
• Date: Sat, 2 Feb 2008 03:29:48 -0500 (EST)

I use Mathematica 6 with Windows Vista.

I have just downloaded MS Visual C++ 2008 Express to set it up to work with 
MathLink. It installs itself along with the MS Visual Studio 2008 
development environment. The documentation for Mathematica 6 (see 
tutorial/MathLinkDeveloperGuide-Windows) assumes you have MS Visual Studio 
2005 (note 2005, NOT 2008), but I hoped that any differences between the 
2005 and 2008 versions would be minor, so I set about getting the addtwo 
example to work. BTW, the prebuilt addtwo example works OK for me.

I followed all of the instructions in 
tutorial/MathLinkDeveloperGuide-Windows for setting up an addtwo project 
without any problems, except for:
(1) In the additional dependencies step (step 16 of the instructions) I 
found that ml32i3.lib does NOT exist, so I used ml32i3m.lib instead.
(2) In the custom build step (step 21 of the instructions) I had to use 
explicit paths rather than the cleverly constructed paths that were 
suggested.

I then built addtwo.exe, and there were no errors but a lot of warnings (see 
the transcript below). I then tried to install addtwo in a fresh Mathematica 
session, but the install hung up on me and never returned.

Presumably there is an installation detail that is somehow different for the 
MS Visual Studio 2008 version (compared to the 2005 version), but there are 
so many things that I could tweak that I don't know where to begin.

Can anyone help?

addtwo build transcript:

1>------ Rebuild All started: Project: addtwo, Configuration: Debug 
Win32 ------
1>Deleting intermediate and output files for project 'addtwo', configuration 
'Debug|Win32'
1>Performing Custom Build Step
1>Compiling...
1>addtwo.c
1>addtwotm.c
1>c:\users\steve luttrell\documents\temp\visual c++ 
2008\addtwo\addtwotm.c(75) : warning C4133: 'function' : incompatible 
types - from 'char [7]' to 'LPCWSTR'
1>c:\users\steve luttrell\documents\temp\visual c++ 
2008\addtwo\addtwotm.c(78) : warning C4133: 'function' : incompatible 
types - from 'char [260]' to 'LPWCH'
1>c:\users\steve luttrell\documents\temp\visual c++ 
2008\addtwo\addtwotm.c(88) : warning C4133: 'function' : incompatible 
types - from 'char [7]' to 'LPCWSTR'
1>c:\users\steve luttrell\documents\temp\visual c++ 
2008\addtwo\addtwotm.c(93) : warning C4133: '=' : incompatible types - from 
'LPSTR' to 'LPCWSTR'
1>c:\users\steve luttrell\documents\temp\visual c++ 
2008\addtwo\addtwotm.c(94) : warning C4133: '=' : incompatible types - from 
'char [10]' to 'LPCWSTR'
1>c:\users\steve luttrell\documents\temp\visual c++ 
2008\addtwo\addtwotm.c(100) : warning C4133: 'function' : incompatible 
types - from 'char [10]' to 'LPCWSTR'
1>c:\users\steve luttrell\documents\temp\visual c++ 
2008\addtwo\addtwotm.c(100) : warning C4133: 'function' : incompatible 
types - from 'char *' to 'LPCWSTR'
1>addtwotm.c(480) : warning C4133: 'function' : incompatible types - from 
'char [64]' to 'LPWSTR'
1>addtwotm.c(492) : warning C4133: 'function' : incompatible types - from 
'char [64]' to 'LPCWSTR'
1>Generating Code...
1>Compiling manifest to resources...
1>Microsoft (R) Windows (R) Resource Compiler Version 6.0.5724.0
1>Copyright (C) Microsoft Corporation.  All rights reserved.
1>Linking...
1>Embedding manifest...
1>Microsoft (R) Windows (R) Resource Compiler Version 6.0.5724.0
1>Copyright (C) Microsoft Corporation.  All rights reserved.
1>Build log was saved at "file://c:\Users\Steve 
Luttrell\Documents\Temp\Visual C++ 2008\addtwo\Debug\BuildLog.htm"
1>addtwo - 0 error(s), 9 warning(s)
========== Rebuild All: 1 succeeded, 0 failed, 0 skipped ==========

Stephen Luttrell
West Malvern, UK