[gecode-users] Linking Error InvolvingGecodeSupport-3-3-1-r-x86.lib

Wed Jun 16 21:05:58 CEST 2010

Actually, given the command line x64 prompt, it should work as described in
MPG. I for one use x64 and MSVC professional 2008 all the time on my office
machine and there it does everything with the switches as described in MPG.
But it might be that Windows XP 64 is just a very strange beast ;-)

Christian

--

Christian Schulte, web.ict.kth.se/~cschulte/

From: Dan Scott [mailto:Dan.Scott at aisystems.org] 
Sent: Wednesday, June 16, 2010 8:54 PM
To: cschulte at kth.se; users at gecode.org
Subject: RE: [gecode-users] Linking Error
InvolvingGecodeSupport-3-3-1-r-x86.lib

For the sake of anyone else who runs into this same problem, I have made the
necessary changes and successfully compiled, linked, and run the program.
Here is what I did.

1.       Went to:  Start -> All Programs -> Microsoft Visual Studio 2008 ->
Visual Studio Tools.  Within that menu, several command prompt shortcuts
were available, including "Visual Studio 2008 x64 Win64 Command Prompt."   I
ran that one.

2.       Using the (just opened) command prompt, I switched to the directory
containing send-more-money.cpp, then ran the same compile command as before:
cl /DNDEBUG /EHsc /MD /Ox /wd4355 -I"%GECODEDIR%\include" -I"C:\Program
Files (x86)\Microsoft Visual Studio 9.0\VC\include" -I"C:\Program
Files\Microsoft SDKs\Windows\v6.1\Include" -c -Fosend-more-money.obj
-Tpsend-more-money.cpp    Note that this looks a little different than the
version in MPG because of the extra "includes" that I specified.  I think I
could have avoided adding those to the command if I had chosen to set up an
appropriate environment variable for includes, but I haven't tried that.

3.       After the compile command returned successfully (and the
send-more-money.obj file appeared in the directory with send-more-money.cpp)
I ran the link command, which now looked like this: cl /DNDEBUG /EHsc /MD
/Ox /wd4355 -I"%GECODEDIR%\include" -Fesend-more-money.exe
send-more-money.obj /link /LIBPATH:"%GECODEDIR%\lib" /LIBPATH:"C:\Program
Files (x86)\Microsoft Visual Studio 9.0\VC\lib\amd64"   Note that this is
different than what I did before.  I am trying to create a 64-bit
executable, so I needed to try to link to 64-bit libraries which are in
:"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\lib\amd64"

The linker ran successfully, created the exe, which also ran successfully.
I expect that I could also have set this all up in the Visual Studio IDE and
not used the command line at all, but that's for another day.

-Dan-

From: users-bounces at gecode.org [mailto:users-bounces at gecode.org] On Behalf
Of Dan Scott
Sent: Wednesday, June 16, 2010 10:03 AM
To: cschulte at kth.se; users at gecode.org
Subject: Re: [gecode-users] Linking Error
InvolvingGecodeSupport-3-3-1-r-x86.lib

Thanks Christian.  I thought it must be something like that.  I do have the
commercial version of Visual Studio, so I will try to enable the 64-bit
compiler.

-Dan-

From: Christian Schulte [mailto:cschulte at kth.se] 
Sent: Wednesday, June 16, 2010 9:54 AM
To: Dan Scott; users at gecode.org
Subject: RE: [gecode-users] Linking Error Involving
GecodeSupport-3-3-1-r-x86.lib

Hi,

As the MSVC compiler tells you, you are using a 32 bit compiler (x86 in
Microsoft speak) to link against a 64 bit library (x64 in Microsoft speak).
It does not matter what your operating system is but what compiler you use
when you decide which version of Gecode to install (x64 or x86).

As Gecode uses auto linking, the x86 compiler you are using tries to find
the x86 library which does not exist on your system.

You have two options now:

1.       Install Gecode for x86 and keep your compiler for x86.

2.       Enable the x64 compiler and keep Gecode for x64 .

Step 2. might be tricky if you have the Visual Studio Express Edition only
as it is only x86. If you have a commercial version you can enable x64 (but
I am not so sure how to do it in MSVC's IDE).

Hope that helps

Christian

--

Christian Schulte, web.ict.kth.se/~cschulte/

From: users-bounces at gecode.org [mailto:users-bounces at gecode.org] On Behalf
Of Dan Scott
Sent: Wednesday, June 16, 2010 6:45 PM
To: users at gecode.org
Subject: [gecode-users] Linking Error Involving
GecodeSupport-3-3-1-r-x86.lib

Hi,

I am a (very) new Gecode user.  I am trying to compile and run the
send-more-money.cpp example following the direction in section 2.3.1 of the
"Modeling and Programming with Gecode" guide.  I am using Gecode 3.3.1 that
I installed from Gecode-3.3.1-x64.msi, and I am running under Windows XP
Professional x64 Edition, using Visual Studio 2008.

When I compiled send-more-money.cpp I had some minor issues with specifying
the correct include directories, but I dealt with that okay, and
successfully created send-more-money.obj.  But, I cannot seem to get the
linking to work, as it complains that it is unable to open
GecodeSupport-3-3-1-r-x86.lib  That file does not exist on my system.
Instead, I have GecodeSupport-3-3-1-r-x64.lib, which makes sense.  But why
isn't it trying to link against *this* file?  How can I correct this?  Do I
need to be changing some commands to make it aware of the fact that this is
a 64-bit system, or something?

The command line compiling and linking text is reproduced below (sorry about
the lousy line breaks.)

Thanks for any assistance,

-Dan-

Compiling (This seemed to work okay, but I thought it might possibly be
relevant):

---------------

D:\Installs\Gecode>cl /DNDEBUG /EHsc /MD /Ox /wd4355 -I"%GECODEDIR%\include"
-I"

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include" -I"C:\Program
Fil

es\Microsoft SDKs\Windows\v6.1\Include" -c -Fosend-more-money.obj
-Tpsend-more-m

oney.cpp

Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for
80x86

send-more-money.cpp

Linking (Here is where the error occurred):

-----------

D:\Installs\Gecode>cl /DNDEBUG /EHsc /MD /Ox /wd4355 -I"%GECODEDIR%\include"
-Fe

send-more-money.exe send-more-money.obj /link /LIBPATH:"%GECODEDIR%\lib"
/LIBPAT

H:"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\lib"

Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for
80x86

Microsoft (R) Incremental Linker Version 9.00.30729.01

/out:send-more-money.exe

"/LIBPATH:C:\Program Files\Gecode\\lib"

"/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\lib"

send-more-money.obj

LINK : fatal error LNK1104: cannot open file 'GecodeSupport-3-3-1-r-x86.lib'

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