Some interesting compiling options when compiling the server .
These compiling options either have already default values set in some *config.h file, and may be set manually,
are automatically generated by the ./configure script,
or are possible to be set by either export VARIABLE_NAME=1
before running the configure script,
passed as –enable-feature –with-feature=FEAT
positional parameter to the configure script,
or as CFLAGS=“-DVARIABLE_NAME -DSOME_OTHER_VARIABLE”
given to the configure script.