q(g++ -g -O) together

https://linux.die.net/man/1/g++ has a section specifically on debugging. It says

GCC allows you to use -g with -O

I think -g adds additional debug info into the binary to help debuggers; -O turns on complier optimization.

By default, our binaries are compiled with “-g3 -O2”. When I debug these binaries, I can see variables but lines are rearranged in source code, causing minor problems. See my blog posts on gdb.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s