GCC is a collection of compilers.
The C compiler itself turns C code into an assembly code listing, and this is sent to the assembler to be converted into an object file and later linked into a target binary.
If you only want some of the stages of compilation, you can use -x (or filename suffixes) to tell gcc where to start, and one of the options -c, -S, or -E to say where gcc is to stop.
Previously we've compiled our C demo program with gcc -static command.
By passing a -static option, we demand GCC to change its default link policy from dynamic to static.
In this article, I'll practice using GNU binutils to take a close look at the b.out product.
Previously, we've taken a look at the basic compilation of C programs using GCC. It links dynamically by default.
In this article, we simply add a -static option to GCC to change its default link policy from dynamic to static.
We then go on to make a basic comparison of the processes of dynamic linking and static linking.
Previously we've compiled our C demo program with gcc command. It links dynamically by default.
In this article, I'll practice using GNU binutils to take a close look at the a.out product.
The compilation is the process of converting the source code of the C language into machine code.
As C is a mid-level language, it needs a compiler to convert it into an executable code so that the program can be run on our machine.
In this article, let's do a hands-on practice to take a close look at the basic compilation of C program with GCC.
objdump - display information from object files.
objdump -d: Display the assembler mnemonics for the machine instructions from the input file.
addr2line - convert addresses or symbol+offset into file names and line numbers.
strings - print the sequences of printable characters in files.
For each file given, GNU strings prints the printable character sequences that are at least 4 characters long (or the number given with the options below) and are followed by an unprintable character.
strings is mainly useful for determining the contents of non-text files.
objdump is the mother of all binary tools.
readelf subsumes the functionality of size and nm.
objcopy contains most of the functionality of strip.
DWARF is a widely used, standardized debugging data format. It was originally designed along with Executable and Linkable Format (ELF).