How to use gdb Debugger for C programming?

Question

My code was working an hour ago.
when i compiled minute ago it shows this error

gcc -g -lm -ansi -Wall -pedantic pms.o pms_options.o pms_utility.o -o pms
Undefined                       first referenced
 symbol                             in file
generate                            pms.o
ld: fatal: Symbol referencing errors. No output written to pms
collect2: ld returned 1 exit status
*** Error code 1
make: Fatal error: Command failed for target `all'
 is there any way to debug for this error using gdb??
Thanks alot

fraggle_uk_uk · Accepted Answer

No. gdb is for debugging the program while it is running.  What you have is a compile time (actually linker) error.

It looks like the program references a symbol (ie. variable or function) that you haven't implemented.  Eg. if you have some code calling a function foo() and there is no foo() function defined in your program.

How to use gdb Debugger for C programming?

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