Re: [Dev-C++] Importing DLL Functions

MinGW (the compiler you are using) do support *.a files just as well as
any other gcc version. It also supports Win32 *.lib files.

What language are you using? C or C++? If you use C, the linker will look
for a synbol _hypotenuse in the *.a file. If you use C++, the compiler
will name-mangle the symbol, to encode the data types and in some cases
the compilation switches. This is a common reason why a C++ program fails
to link with a C library (unless the header file says extern "C" symbol)
or why a C++ program fails to link with a C++ library compiled with too
different compiler settings or with a different version of the C++
compiler.

A quickie to look for this problem is to run the command "strings" (not in
Win32, so you have to download a copy) on your object file in your
project, and on the *.a file and check if the hypotenuse reference looks
identical.

/pwm

On Thu, 10 Apr 2008, Samuel Hulley wrote:

> Hi,
> For so long I have been using a different compiler, but now I am using
> Dev-C++, In my old compiler I was able to create a header file and place
> something like this in it:
>
>  > double hypotenuse(double sidea,double sideb);
>
> Then include it into my app, set the .a file and use it, but now I get
> an error message saying:
>
>  >  [Linker error] undefined reference to `hypotenuse(double, double)'
>
> Any ideas?
>
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