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Communication error with g ++ 3.4.4 and g ++ 3.4.5

Usage: windows xp, g ++ 3.4.4 with cygwin and g ++ 3.4.5 with mingw.

I am compiling a simple unit test class with cppunit.

When I link to g ++ 3.4.5 I get a lot of linking errors. When I link with g ++ 3.4.4 I don't get any errors and the exe links are fine and works.

I can't trace the errors, so any thoughts?

Thanks.

EDIT: Communication Errors: Errors not related to the error. For instance:

 SimpleTest.cpp:(.text+0x313): undefined reference to `CppUnit::Message::Message(std::string const&, std::string const&)'

EDIT: cmd line:

g++ -I g:\projects\thirdparty\cppunit-1.12.1\include -L g:\projects\thirdparty\cppunit-1.12.1\lib -l cppunitd -o main.exe main.cpp SimpleTest.cpp

Update: Same code in Visual Studio: No error, unit test works as expected.

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3 answers


Your problem may be due to the wrong communication line. The order of sources / object files and libraries on the link line matters . Correct link line:



g++ -I g:\projects\thirdparty\cppunit-1.12.1\include \
    -L g:\projects\thirdparty\cppunit-1.12.1\lib \
    -o main.exe main.cpp SimpleTest.cpp -lcppunitd
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As g ++ matures, I'm at 4.2.3, this type checking has gotten more pedantic and, for that matter, better. With a little information, I would say that you should carefully study your calls for these methods. I suspect the types are not entirely correct. 3.4.4 won't catch, 3.4.5 does. .... JW



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One thing you might try is compiling with g ++ 3.4.5 and / or 3.4.4 on Linux. If the result is the same, then it is obviously a gcc property. Otherwise it sounds like a problem rather.

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