GO_LDFLAGS and git metadata - Fedora specific questions #8989

buckaroogeek · Feb 4, 2025

buckaroogeek
Feb 4, 2025

The legacy rpm spec file used to build cri-o includes the following export which sets the value of certain fields at build-time.

export BASE_LDFLAGS="-X %{goipath}/internal/pkg/criocli.DefaultsPath=%{criocli_path}
-X  %{goipath}/internal/version.buildDate=%{build_timestamp}
-X  %{goipath}/internal/version.gitCommit=%{commit0}
-X  %{goipath}/internal/version.version=%{version}
-X  %{goipath}/internal/version.gitTreeState=%{git_tree_state} "

As far as I can tell from current CRI-O code, only buildDate can now be set. Everything else in the above GO_LDFLAGS string is ignored. Am I following the code correctly?

The build-time LDFLAGS is stored and available via crio -v when a fedora built CRI-O package is installed but git related metadata cannot be set via LDFLAGS as far as I can tell. Is that accurate?

thanks

Answered by saschagrunert

Feb 5, 2025

Hey @buckaroogeek, yes, that's correct 👍

cri-o/internal/version/version.go

Lines 29 to 32 in 6601c98

     // Variables injected during build-time.  
   var (  
   buildDate string // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')  
   )  

 

The dynamic stuff happens there:

cri-o/internal/version/version.go

Lines 151 to 155 in 6601c98

     func Get(verbose bool) (*Info, error) {  
   info, ok := debug.ReadBuildInfo()  
   if !ok {  
   return nil, errors.New("unable to retrieve build info")  
   }  

 

View full answer

saschagrunert · 2025-02-05T08:04:53Z

saschagrunert
Feb 5, 2025
Maintainer

Hey @buckaroogeek, yes, that's correct 👍

cri-o/internal/version/version.go

Lines 29 to 32 in 6601c98

    
           // Variables injected during build-time. 
        
           var ( 
        
           	buildDate string // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ') 
        
           )

The dynamic stuff happens there:

cri-o/internal/version/version.go

Lines 151 to 155 in 6601c98

    
           func Get(verbose bool) (*Info, error) { 
        
           	info, ok := debug.ReadBuildInfo() 
        
           	if !ok { 
        
           		return nil, errors.New("unable to retrieve build info") 
        
           	}

1 reply

buckaroogeek Feb 5, 2025
Author

Excellent! Many thanks for the prompt and informative response.

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GO_LDFLAGS and git metadata - Fedora specific questions #8989

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	// Variables injected during build-time.
	var (
	buildDate string // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
	)

	func Get(verbose bool) (*Info, error) {
	info, ok := debug.ReadBuildInfo()
	if !ok {
	return nil, errors.New("unable to retrieve build info")
	}

GO_LDFLAGS and git metadata - Fedora specific questions #8989

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buckaroogeek Feb 4, 2025

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saschagrunert Feb 5, 2025 Maintainer

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buckaroogeek Feb 5, 2025 Author

buckaroogeek
Feb 4, 2025

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saschagrunert
Feb 5, 2025
Maintainer

buckaroogeek Feb 5, 2025
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