Borland + DLLs + Linker Errors = Bad [but good now, resolved]

I tried running Parksie's DLL tutorial and I get this error, which I quickly blame on Borland but I don't have VC++.

http://www.vbforums.com/attachment.php?s=&postid=678558

BTW, I editing the .def from testdll.dll to helloworld.dll and no change.

Borland sucks for dlls. *** does "referenced from root" mean???

Good question. But like I said I don't have access to VC++ unless you can suggest another compiler.

Anybody?

The .def file should be the same as the target .dll file name. Although I have no idea what the name means. It probably tried to optimise out the function :rolleyes:

Try using:

Code:

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extern "C" long __stdcall TestFunction(...) { ... }

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Well it compiled and linked and all that, but now it's bit**ing about not being able to create an output file.

Code:

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Info :Making...
Info :helloworld.cpp: rebuild due to dependency helloworld.cpp
Info :  helloworld.cpp: cache age 7:57:12 PM 12/2/2001, disk age 6:28:10 PM 12/3/2001
Info :Compiling D:\Arien's Stuff\C++ Programs\Other\Hello World DLL\helloworld.cpp
Info :helloworld.rc: out of date with destination helloworld.res
Info :  helloworld.rc: source date <unknown>  destination date 9:31:28 PM 12/2/2001
Info :Resource compiling D:\Arien's Stuff\C++ Programs\Other\Hello World DLL\helloworld.rc
Info :Linking D:\Arien's Stuff\C++ Programs\Other\Hello World DLL\helloworld.dll
Info :Transferring to D:\Programs\BORLAND\C++ 5\BIN\implib.exe @C:\DOCUME~1\ARIENT~1\LOCALS~1\Temp\RSP0.$$$
Fatal:  error (5,1): unable to open output file

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I instantly blame Borland but I sorta need it to work too. :)

Whoo:

VB Code:

' module:
Declare Function TestFunction Lib "helloworld.dll" (ByVal lInput As Long) As Long
 
 
?TestFunction(10)
 15

Interestingly enough the file was there and compiled and all. Evil Borland. :rolleyes:

Why do you have a .RC file in there?

Quote:

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Originally posted by filburt1
Whoo:

Code:

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?TestFunction(10)
 15

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Interestingly enough the file was there and compiled and all. Evil Borland. :rolleyes:

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Hmm...how bizarre :)

At least MS got something right with MSVC ;)

Quote:

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Originally posted by parksie
Why do you have a .RC file in there?

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Uh, because it added it to the project when I started it? I've only worked with console C++ before, haven't done any of this DLL stuff. :(

Quote:

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Originally posted by filburt1
Uh, because it added it to the project when I started it? I've only worked with console C++ before, haven't done any of this DLL stuff. :(

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DLLs are technically simpler to write than console programs (they only need to supply code and resources).

Although DLLs do have an entry-point function (DllMain) so it's more complex behind the scenes.

Anyway, kick out the .RC file, you don't need it for that example.

Quote:

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Originally posted by parksie
Anyway, kick out the .RC file, you don't need it for that example.

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Done and it compiled quite a bit faster. :)