2.3 Measuring Compilation Time

Always do 5 runs then average them. Run make clean in between

1. cmake -DCMAKE_C_FLAGS="-g -pg -no-pie" .. (gprof)
   • 0.218s
2. cmake -DCMAKE_C_FLAGS="-g -fprofile-arcs -ftest-coverage" .. (gcov)
   • 0.242s
3. cmake -DCMAKE_C_FLAGS="-g" ..
   • 0.226s
4. cmake -DCMAKE_C_FLAGS="-O2" ..
   • 0.332s
5. cmake -DCMAKE_C_FLAGS="-O3" ..
   • 0.348s
6. cmake -DCMAKE_C_FLAGS="-Os" ..
   • 0.304

2.4 Measuring Program Size

1. cmake -DCMAKE_C_FLAGS="-g -pg -no-pie" (gprof)
   • 61316 bytes
2. cmake -DCMAKE_C_FLAGS="-g -fprofile-arcs -ftest-coverage" (gcov)
   • 98416 bytes
3. cmake -DCMAKE_C_FLAGS="-g"
   • 61856 bytes
4. cmake -DCMAKE_C_FLAGS="-02"
   • 32432 bytes
5. cmake -DCMAKE_C_FLAGS="-03"
   • 32440 bytes
6. cmake -DCMAKE_C_FLAGS="-Os"
   • 28368 bytes

2.5 Measuring Performance Time

1. cmake -DCMAKE_C_FLAGS="-g -pg -no-pie" (gprof)
   • 50.79s