How can gcc compile multiple source files for use in GDB?

Question

I have two source files that I'm currently compiling into one executable.

I use gcc -o ProgramName file1.c file2.c

I know gdb requires the -g flag when being compiled but I must be placing it incorrectly. I have tried several things but nothing along the lines of:

gcc -g -o ProgramName file1.c file2.c is working for me. When I run gdb -> run it says that no executable was found.

How do I compile this correctly so it will run in GDB?

Answer 1

The proper command is

gdb ProgramName

followed by

run

in the prompt.

Answer 2

Try with:

gdb -tui ProgramName 

This will open the GDB with the Text User Interface , which by default will load the source code in your screen. In this way you will know if the program was loaded.

The screen will be split, with the source code in the top and the command line in the bottom, like this:

Answer 3

Please compile the individual source files(cxx,c) using gcc -g -c file1.c file2.c (so on) This will generate the file1.o file2.o files (so on ...) now compile the object files into a formal executable. gcc -g -o file.exe file1.o file2.o

On similar lines for c++ g++ -g -c file1.c file2.c g++ -g -o file.exe file1.o file2.o

Now run the gdb file.exe

For further reference: Please go through: http://www.ntu.edu.sg/home/ehchua/programming/cpp/gcc_make.html#zz-1.7