Re: [Haskell-cafe] Troubles with DLLs

[Henk-Jan van Tuyl]

On Fri, 21 Dec 2012 21:08:43 +0100, Henk-Jan van Tuyl 
wrote:

1) How can I find out which DLLs my application needs (and which  
package/library is to blame for it)


I have found a partial answer: cygcheck from Cygwin can list dependencies
on DLLs recursively, like this:


cygcheck.exe .\BouncingBalls.exe

.\BouncingBalls.exe
C:\WINDOWS\system32\KERNEL32.DLL
  C:\WINDOWS\system32\ntdll.dll
C:\WINDOWS\system32\msvcrt.dll
C:\WINDOWS\system32\SHELL32.DLL
  C:\WINDOWS\system32\ADVAPI32.dll
C:\WINDOWS\system32\RPCRT4.dll
  C:\WINDOWS\system32\Secur32.dll
  C:\WINDOWS\system32\GDI32.dll
C:\WINDOWS\system32\USER32.dll
  C:\WINDOWS\system32\SHLWAPI.dll
C:\WINDOWS\system32\WSOCK32.DLL
  C:\WINDOWS\system32\WS2_32.dll
C:\WINDOWS\system32\WS2HELP.dll
C:\Haskell\Projects\X\wxc.dll
  C:\Haskell\Projects\X\libstdc++-6.dll
C:\Haskell\Projects\X\libgcc_s_dw2-1.dll
etcetera.


If a DLL is not found, you will get a message like:
Error: could not find wxc.dll

It will not always be apparent, which package is responsible for
the DLL dependency.

I am still left with the question:
how can I find the error location when the crash occurs in C/C++ code?

Regards,
Henk-Jan van Tuyl


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Haskell programming
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[Haskell-cafe] Troubles with DLLs

[Henk-Jan van Tuyl]

L.S.,

I am having troubles with DLLs; my application (Haskell, C and C++) gives  
several messages about DLLs not being found. I added these one by one to  
the current directory. At a certain point there are just error messages  
about null pointers and "Segmentation fault/access violation in generated  
code". When I try to load my application in GHCi, I get more messages  
about missing DLLs, up to a point where GHCi refuses to load a library  
because of an unknown section (a bug to be solved in GHC 7.6.2). (Several  
other programs have the same problem.)


Now I am still stuck with a null pointer error message.
1) How can I find out which DLLs my application needs (and which  
package/library is to blame for it) and
2) how can I find the error location when the crash occurs in C/C++ code  
(it might be something else than a missing DLL of course)?


My system:
Windows XP + MinGW/MSYS
Haskell platform 2012.4.0.0

The application uses wxHaskell.

Regards,
Henk-Jan van Tuyl


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http://members.chello.nl/hjgtuyl/tourdemonad.html
Haskell programming
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