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conda-forge / qt-feedstock

A conda-smithy repository for qt.
BSD 3-Clause "New" or "Revised" License
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Building on Windows with MinGW #233

Closed oleg-alexandrov closed 2 years ago

oleg-alexandrov commented 2 years ago

Comment:

I am trying to do a build job on Microsoft Windows.

I fetched qt=5.9.7 from conda-forge and tried to compile a program with m2w64-gcc=5.3.0. I get a lot of failures at link-time. I did check that the right libraries were passed to the linker and there's no invocation mistake.

Is it because this compiler and this version of Qt are incompatible? Is there a specific compiler needed to use with Qt on Windows?

Thanks.

gillins commented 2 years ago

conda-forge packages are built with MSVC for compatibility with Python (see https://wiki.python.org/moin/WindowsCompilers). In order to link against our packages you will need to do the same.... There is some interoperability between gcc and MSVC for C code but for C++ they are incompatible (different name mangling for a start - hence the errors you are seeing).

oleg-alexandrov commented 2 years ago

Thank you. This is very helpful. Not sure how one would document this better for folks running into this issue, but my question is answered. I will close this.