Instructions 32 Bit Version
 
 Copy dhry_1.c, dhry_2.c and dhry.h to a new folder and the 
 following cpuida.o, cpuidc.o and cpuidh.h from common_32bit.
 
 Line 31 in dhry_1.c change options to "No Opt", "Opt 2" or "Opt 3". 
 
 Compile and link using one or more of the following
 commands in Terminal pointing to the new folder.

 gcc dhry_1.c dhry_2.c cpuidc.o cpuida.o -lrt -lc -lm -o dhry2
 gcc dhry_1.c dhry_2.c cpuidc.o cpuida.o -lrt -lc -lm -O2 -o dhry22
 gcc dhry_1.c dhry_2.c cpuidc.o cpuida.o -lrt -lc -lm -O3 -o dhry23

 Execute using ./dhry2, ./dhry22 or ./dhryt23.
 Results should be displayed and saved in Dhry.txt.

 
 Instructions 64 Bit Version

 Copy dhry_1.c, dhry_2.c and dhry.h to a new folder and the following
 cpuida64.o, cpuidc64.o and cpuidh.h from common_64bit.

 Line 31 in dhry_1.c change options to "No Opt 64", "Opt 2 64" or "Opt 3 64". 

 Compile and link using one or more of the following
 commands in Terminal pointing to the new folder.
 
 gcc dhry_1.c dhry_2.c cpuidc64.o cpuida64.o -m64 -lrt -lc -lm -o dhry2_64
 gcc dhry_1.c dhry_2.c cpuidc64.o cpuida64.o -m64 -lrt -lc -lm -O2 -o dhry22_64
 gcc dhry_1.c dhry_2.c cpuidc64.o cpuida64.o -m64 -lrt -lc -lm -O3 -o dhry23_64

 Execute using ./dhry2_64, ./dhry22_64 or ./dhry23_64.
 Results should be displayed and saved in Dhry.txt.

 The execution files can be renamed later.