The error is:
../deps/libmariadbclient/vio/vio.c:389:3: error: implicit declaration of function 'yaSSL_CleanUp' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
yaSSL_CleanUp();
^
1 error generated.
make: *** [Release/obj.target/vio/deps/libmariadbclient/vio/vio.o] Error 1
After a ton googling, I found there was a change in Xcode 12.x that breaks this for some reason. In Xcode 11.x this was emitted as a warning, not an error.
Since this library is abandoned, the solution is to downgrade to Xcode 11.x. You can find older versions at https://developer.apple.com/download/more/ (you have to have a developer account at apple).
The error is:
After a ton googling, I found there was a change in Xcode 12.x that breaks this for some reason. In Xcode 11.x this was emitted as a warning, not an error.
Since this library is abandoned, the solution is to downgrade to Xcode 11.x. You can find older versions at https://developer.apple.com/download/more/ (you have to have a developer account at apple).