Type:
Task
Priority:
Major
Resolution:
Fixed
Traditionally, MariaDB links C and C++ runtimes statically , with /MT compiler option.
The upside of it is that mariadb server linked this way can run anywhere, and does not need C runtime to be installed on the box .
The problem with static linking
The downside is large package size, servicing and security. In case of a security bug in CRT, users would need executables that are recompiled with the CRT versions that contain fixes (contrast with dynamic linking, where CRT security fixes would be delivered by the Windows update)
Another downside is that static linking requires careful considerations when programming, e.g 2 different DLLs cannot use each other's CRT objects. Which means, file descriptors or FILE* cannot be passed around between mysqld.exe and plugins, memory allocated with malloc() from one DLL can only be free()d in the same dll and so on.
The task
is to change our build to use dynamic C runtime linking. This means CRT needs to be installed on the target computer, but this is likely already be the case since Windows 10 already includes Universal CRT (UCRT) as part of OS, and on downlevel OSes it comes as part of popular packages
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