Mono: problem finding libgdiplus

[xyz000]

Hi,

This seems to be a common mono installation problem but the suggested solution doesn't work for me. Here's where I've got to:

export PATH=/usr/local/share/mono/bin:$PATH
export MONO_LOG_LEVEL=info
export MONO_LOG_MASK=dll
export LD_LIBRARY_PATH=/usr/lib:$LD_LIBRARY_PATH
ls $LD_LIBRARY_PATH/libgdiplus*
/usr/lib/libgdiplus.a  /usr/lib/libgdiplus.so  /usr/lib/libgdiplus.so.0  /usr/lib/libgdiplus.so.0.0.0

So the libgdiplus files are present and can be accessed by the LD_LIBRARY_PATH environment variable. Now when I execute mono on a WinForms program I get:

mono helloworld.exe
<snip>
Mono-INFO: DllImport attempting to load: 'gdiplus.dll'.
Mono-INFO: DllImport loading location: 'libgdiplus.dll.so'.
Mono-INFO: DllImport error loading library: 'libgdiplus.dll.so: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading library: './libgdiplus.dll.so'.
Mono-INFO: DllImport error loading library './libgdiplus.dll.so: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading: 'gdiplus.dll'.
Mono-INFO: DllImport error loading library 'gdiplus.dll: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading location: 'libgdiplus.so'.
Mono-INFO: DllImport error loading library: 'libgdiplus.so: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading library: './libgdiplus.so'.
Mono-INFO: DllImport error loading library './libgdiplus.so: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading: 'gdiplus'.
Mono-INFO: DllImport error loading library 'gdiplus: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading location: 'libgdiplus.dll.so'.
Mono-INFO: DllImport error loading library: 'libgdiplus.dll.so: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading library: './libgdiplus.dll.so'.
Mono-INFO: DllImport error loading library './libgdiplus.dll.so: cannot open shared object file: No such file or directory'.
Mono-INFO: DllImport loading: 'libgdiplus.dll'.
Mono-INFO: DllImport error loading library 'libgdiplus.dll: cannot open shared object file: No such file or directory'.
</snip>

Any suggestions gratefully received thank you!

[Rubberman]

Wouldn't this question be better answered in the Mono user forums instead of here? In any case, I try to stay away (as far as possible) from any Windows programming environment, especially in the Linux/Unix universe. If you must run a cross-platform, byte-code interpreted applications, then stick with something that works well across the board, such as Java.

[xyz000]

Wouldn't this question be better answered in the Mono user forums instead of here?

Good advice thank you.

...then stick with something that works well across the board, such as Java.

I agree. Sadly in this case another team doesn't believe in cross-platform apps so I'm forced down the route of having to make a bespoke .NET app execute under Linux.

[Rubberman]

Ok. Took a second look at the first instance of your "code". The LD_LIBRARY_PATH environment variable does NOT point to a single directory, which is how you are using it with the 'ls' command. It is like the PATH environment except that it can point to 0...N directories. So, it can be empty or not defined, or it can contain one or more directories, each separated by a colon ':' character. Another thing is that if your Mono version is 64-bit then the libraries have to be 64-bit also and they have to be in /usr/lib64, not in /usr/lib. So, while you have the 32-bit versions of libgdi* you may need and not have the 64-bit ones.

[Rubberman]

One last couple of questions.

1. What Linux distribution+version+kernel are you running?
2. What version of Mono do you have installed?