Trying to build gives error with "WITH_IPOPT" flag about casadi HOT 3 OPEN

I tried with the visual studio compiler and WinGC, also I tried with the actual main branch and the 3.6 branch. All options gave the same error.

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I tried to include the IPOPT myself, but it gives a similar error
FAILED: libcasadi_nlpsol_ipopt.dll libcasadi_nlpsol_ipopt.dll.a
cmd.exe /C "cd . && D:\JVaquer\Documents\mingw64\bin\g++.exe -fno-ipa-cp-clone -O3 -DNDEBUG -shared -o libcasadi_nlpsol_ipopt.dll -Wl,--out-implib,libcasadi_nlpsol_ipopt.dll.a -Wl,--major-image-version,0,--minor-image-version,0 casadi/interfaces/ipopt/CMakeFiles/casadi_nlpsol_ipopt.dir/ipopt_interface.cpp.obj casadi/interfaces/ipopt/CMakeFiles/casadi_nlpsol_ipopt.dir/ipopt_nlp.cpp.obj casadi/interfaces/ipopt/CMakeFiles/casadi_nlpsol_ipopt.dir/ipopt_interface_meta.cpp.obj libcasadi.dll.a D:/JVaquer/Documents/casadi-3.6/dependencies/libs/ipopt.dll.lib D:/JVaquer/Documents/casadi-3.6/dependencies/libs/ipoptamplinterface.dll.lib D:/JVaquer/Documents/casadi-3.6/dependencies/libs/sipopt.dll.lib -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 && cd ."
D:/JVaquer/Documents/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: casadi/interfaces/ipopt/CMakeFiles/casadi_nlpsol_ipopt.dir/ipopt_interface.cpp.obj:ipopt_interface.cpp:(.text+0x124d): undefined reference to `__imp__ZTVN5Ipopt16RegisteredOptionE'

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Hi @PinyaColada ,
It's good that you are testing this on Windows, as I don't think it has been before.

I think the root cause is here that
https://github.com/casadi/casadi/blob/main/CMakeLists.txt#L826-L844 is platform specific and unimplemented for Windows.

I would imagine that import libraries get created automatically on Windows though. Can you search the build folder for anything *openblas*.lib?
If it is already, you can suggest a change to https://github.com/casadi/casadi/blob/main/CMakeLists.txt#L1057 to get the path/name corrected for Windows.

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