Golang automatically generate version information

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Original: Golang automatically generate version information

Demand

The Golang program automatically generates version information when build, using./helloworld–version to view version and build time

Implementation principle

Use the link option -X to set a variable that can be accessed in a binary file

• Example 1:

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Package mainimport"FMT"var"No Version provided"func Main () { fmt. Println ("HelloWorld version is:", Version)}

123	"-X Main. Version 1.5 "1.5

• Example 2

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Package mainimport \ "Fmt\" var buildstamp = \ "No timestamp set\" var githash = \ "No Githash set\" Func main () { fmt. Println (\ "HelloWorld buildstamp is:\", Buildstamp) FMT. Println (\ "HelloWorld buildgithash is:\", Githash)}

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Go build-ldflags \"x main.buildstamp ' date \ ' +%y-%m-%d_%i:%m:%s\ ' x main.githash ' git rev-parse HEAD ' \" HelloWorld . Go ./helloworld HelloWorld buildstamp Is:2015-09-08_05:58:49helloworld Buildgithash is: 1adb00d88d832687eb4148a3871829fb73021c29

Resources
Golang-auto-build-versioning

Some other related introductions:

1. Write git version information to go program at compile time
2. Command/link
3. Setting Go variables from the outside