Dynamic build detection fails at compile time.

[Achaean]

ScummVM compilation fails, if you add the "--enable-detection-dynamic" argument.

I'm at PCLinux and I tried both the latest stable version and the latest code from Githump.

The last lines of console output are:

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base/detection/detection.cpp:53:24: σφάλμα: expected constructor, destructor, or type conversion before ‘(’ token
53 | REGISTER_PLUGIN_DYNAMIC(DETECTION_DYNAMIC, PLUGIN_TYPE_DETECTION, DetectionDynamic);
|                        ^
make: *** [Makefile.common:171: base/detection/detection.o] Error 1
make: *** Waiting for unfinished jobs....
>

[digitall]

Replicated with latest git master. The issue appears to occur if "--enable-plugins" is not passed and dynamic plugins is not the default build on platform i.e. on Linux x86_64, the default will be a static build, rather than using plugins.

However, adding a guard to base/detection/detection.cpp to check for the DYNAMIC_MODULES symbol is not sufficient to get a successful build and link with the current code.

It looks like the static vs. dynamic build logic in configure, config.h symbols and code could do with a minor refactor to ensure a clear logical consistency in how this works.