ddd no debug symbols are found

Question

I build my project with "./configure CFLAGS=-g3" , also tried "make CFLAGS=-g3". when I load slim.exe with ddd, it say no debug symbols are found.

How can I create slim.exe with debug symbols, and I load it to ddd and perform debugging?

is there any chance that debug is disabled in configure.ac ?

I am not familiar with automaketools and Linux, now using cygwin on windows. I searched solutions, but failed.

could anyone point out my mistakes? many thanks in advance

Answer 1

Assuming your compiler is gcc, the option to enable debug output is -g, there's no number after it. It looks like you're confusing it with the optimization flag family -O1 and so on.

Also, to set the environment variable, you need to do it before running the command, in general:

$ CFLAGS=-g make

And with autoconfig, it's ususally an option:

$ ./configure --enable-debug

You can run ./configure --help to view the available options, and since configure will lead to Makefile(s) being created, you must always do it before trying to build the project by running make.

The sequence is, typically:

1. cd project
2. ./configure --help to review the options, look for --enable-debug
3. ./configure --enable-debug to run the autoconfig script, creating Makefile(s)
4. make