https://github.com/ejunjsh/ping

a ping command line from unp
https://github.com/ejunjsh/ping

Last synced: about 1 month ago
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a ping command line from unp

• Host: GitHub
• URL: https://github.com/ejunjsh/ping
• Owner: ejunjsh
• License: mit
• Created: 2018-09-15T09:56:42.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2018-09-20T12:46:25.000Z (over 7 years ago)
• Last Synced: 2024-12-29T08:41:56.296Z (about 1 year ago)
• Language: C
• Size: 45.9 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# ping

a ping command line from unp, this code just let me pratice the related gcc command.

__Notice: this code only build on macos__

## build share library

    gcc lib/*.c -shared -fPIC -o libunp.so -w

## build static library

    cd lib/

    gcc -c *.c -w

    cd -

    ar rv libunp2.a lib/*.o

## build executable file with share library

    gcc *.c -Ilib/  -o ping  -L. -lunp -D__APPLE_USE_RFC_3542 -w

## build executable file with static library

    gcc *.c -Ilib/  -o ping  -L. -lunp2 -D__APPLE_USE_RFC_3542 -w

## run

    # the raw socket need root permission

    sudo ./ping www.baidu.com

## check dependencies of executable file

    # use share library

    otool -L ping

    ping:

            libunp.so (compatibility version 0.0.0, current version 0.0.0)

            /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.50.4)

    # use static library

    otool -L ping

    ping:

            /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.50.4)