Two problems addressed here:
Embedded-server linking failure.
sql/sys_vars.cc absents in the libmysqld/CMakeLists.txt
The PERFORMANCE_SCHEMA-related failure of the embedded-server compilation.
We try to disable the PERFORMANCE_SCHEMA in the embedded server
as it's considered useless there. But we do it in wrong way as
we only disable header's links to the PF, not the PF's library itself.
So on Unix-ex the embedded library still contains the PF code and
grows bigger with no reason. On Windows that just fails to compile.
per-file comments:
include/my_global.h
Bug#41103 6.0 Windows embedded-server tests fail
No PERFORMANCE_SCHEMA disabling in the embedded server. User can
just use the --without-perfschema-engine-plugin option to exclude it
from the compilation.
ec0f9feabb