OpenFPM-pdata-advanced-options.md

+## Debug options
+
 OpenFPM is in general is only header library with few exceptions, to compile the unit tests there are 4 that can be considered the most important options, in the install script these option are passed with -c "--enable-se-class1 --enable-se-class2 --enable-se-class3 --enable-debug"
 
 * --enable-debug this option disable the optimizer and include debug information in the executables