I'm trying to use GDB and KDEvelop to debug a console app under Knoppix VM. KDevelop and GDB don't break at my breakpoints. I suspect it's because they don't have debug symbols.
If I'm correct how do I need to change my Makefile to create those. Maybe the problem is somewhere else?
Regards, Ariel
Include -g in the flags sent to the compiler and linker. The default variables for this are CFLAGS and LDFLAGS respectively.
The second step: exclude -s from flags (-s means strip)
If you are able to see source and set the breakpoint, then you probably have debugging symbols established. However, the usual sequence is:
gcc -g -o (outputname) (source files...)
gdb outputname
Give more specifics about what you are doing and what messages you see and we can be more specific.
The full example would be:
CFLAGS =-g
all: program.o
gcc -o program program.o
The CFLAGS here is applied to both the compiler and the linker.
来源：https://stackoverflow.com/questions/1937420/how-to-generate-debug-symbols-with-makefile-for-c-linux