Solved compile with -O2 or -g

[Calon]

Hello, do i knw what is difference between compile with -O2 or -g ? what are those mean ? i think there
's also -O3 cant get it

 

[dominique120]

You must tell us what compiler you use because they are different flags for different compilers. Since -Ox format is usually for gcc here is what they mean(for gcc)

-O1, Oo, O3, Ox are all optimization levels they can make your server a bit faster in certain conditions or executable smaller.
-g is just for compiling with debugging information.

Also, it would be great if you read the manual of gcc
https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html
https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html

 

[Calon]

thank you my issue solved