[C Language] GCC main options

option	description
gcc -c	compile source files to object files without linking
gcc -Dname[=value]	define a preprocessor macro
gcc -fPIC	generate position independent code for shared libraries
gcc -glevel	generate debug information to be used by GDB
gcc -Idir	add include directory of header files
gcc -llib	link with library file
gcc -Ldir	look in directory for library files
gcc -o output file	write build output to output file
gcc -Olevel	optimize for code size and execution time
gcc -shared	generate shared object file for shared library
gcc -Uname	undefine a preprocessor macro
gcc -w	disable all warning messages
gcc -Wall	enable all warning messages
gcc -Wextra	enable extra warning messages

Reference:

• GCC C Compiler