| project | content |
|---|---|
| This work belongs courses | < Home link classroom courses > |
| Where this requirement in the job | < Operational requirements of the Home link > |
| Student ID - Name | 17043103- Li Xiaofang |
| Job learning objectives | 1. Understand the Linux system C language programming environment 2. The learning Linux C language development environment steps |
1. Install the C language development environment
sudo apt install build-essential
View gcc version information
gcc -v
View make version information
make -v
2. A simple C language exercises
1) First, we help documentation through the man command
man gcc
2) a simple command-line mode C language compiler and linker and other operations
Input source
a) pre-compiled
b) Compile
Open the file with vim test.s to view the content
c) compilation
d) link
After the executable file with the command objdump to disassemble the file
objdump -d test
File contents in the main function part
e) running
3) multi-file compilation
In exp4 folder below to build a folder mfc (multi-files compile)
In this folder create the following 5 files, file names are as follows:
Contents of each file are as follows:
Completion of the above code is entered, then compiled, for multi-file compilation, we can compile links to an executable file, you can compile each C file separately, and finally get linked executable file.
Q: Please explain the difference between the two methods?
A: The two methods compared to the time needed to compile all linked files when the executable file to re-compile, and compile each file separately can recompile only modified files, unmodified files without recompiling.
Then write a simple Makefile, compiled by the make tool. Write a Makefile in the current folder
document content:
Directly at the terminal input make can be compiled and linked operation
