.vscode folder in icu4c/source
c_cpp_properties.json files into the
-l20 tells VSCode to not launch jobs if the system load average is above 20 (note that the system load average is not a CPU usage percentage).
-j24 limits the number of jobs launched in parallel to 24. The system load average takes a while to respond, reducing this number helps the initial bad system performance when a new build is launched.
NOTE: Run the
./runConfigureICU command before building
icu4c from VSCode.