compiling is the process of converting source code to machine code
but it actually consists of the following steps:
pre-processing
compiling
assembling
linking
(when we say compile, we are actually referring to these four steps, but we wont dwell on such low-level details)
pre-processing - looks for "#" , and then finds-and-replaces, copy-and-pastes
cs50 week 2 video 12:40
source: cs50
clang -o hello hello.c -lcs50
this argument tells the compiler to link the cs50 library binaries
-lm ....... links a math library
-lcrypt ......... links to a cryptography or encryption library
make automates the work of manually typing in a whole bunch of command line argument when compiling
cs50 week 2 video 9:30 , 10:42
source: cs50
configures clang to name the resulting output file "hello" instead of a.out
source: cs50
a.out is the default file name for the file obtained after compiling using clang
source: cs50
if you type command : "make hello"
the make program will automatically look for a file called "hello.c" to compile
and will produce a file called "hello" that you can execute
source: cs50
