Enable BUILD_CORE_DLL

[pfultz2]

No description provided.

[firewave]

The build is still not tested. The DLL it produces is also unusable because we generate actual libraries for everything (which I stated should not be done). That feature should just be removed and Visual Studio should also not generate a DLL (as also I stated before).

[danmar]

@firewave could you explain the overall problem with generating a DLL that is reused by both the GUI and CLI? It sounds like a good idea to me technically to generate it.. however it must of course be tested in some way..

[pfultz2]

The build is still not tested.

I did test this on linux/mac and it does work. I dont have access to windows to test it though.

The DLL it produces is also unusable because we generate actual libraries for everything (which I stated should not be done). That feature should just be removed and Visual Studio should also not generate a DLL (as also I stated before).

It only builds a DLL for cppcheck-core.

All the other libraries that are generated are static and are linked into the executable or the DLL, so they can be discarded and do not make the DLL unusable.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[dmcppcheck]

Test results for commit dd79f16 (tools/test-my-pr.py, main compared to this PR):

Test: http://ec2-16-170-140-253.eu-north-1.compute.amazonaws.com/pr-8016/
packages: 100
Differing warnings: 1 (+1 -0)
AI review: 1 regression (http://ec2-16-170-140-253.eu-north-1.compute.amazonaws.com/pr-8016/2025-12-09_19-19-12-dd79f1602d01-review.txt)
Timing: +0.0% (http://ec2-16-170-140-253.eu-north-1.compute.amazonaws.com/pr-8016/2025-12-09_19-19-12-dd79f1602d01_timing.html)

_{Posted automatically by the cppcheck PR test runner. +N: warnings only with this PR, -N: warnings only with main. The AI review is written by Claude and can be wrong.}