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I have the following problem: In the %prep, I run a command that returns a value. I want to be able to use this value in the %build.

I was not able to do it with macros, because %global gets its value on init, and %declare is executed when called. I also wasn't able to use bash parameters because they are not shared between %prep and %build.

I have 2 workarounds: Do all in %prep, or save the value to a file. I'm not comfortable with any of these workarounds.

This seems to be a simple task. Am I missing something?

  • Why can't %prep finish the prep? – Ignacio Vazquez-Abrams Aug 11 '13 at 8:45
  • It does. But I need a value from the %prep in the %build. – Eran Ben-Natan Aug 11 '13 at 8:52
  • Then why isn't the value being generated in %build? – Ignacio Vazquez-Abrams Aug 11 '13 at 8:54
  • Because logically the process that creates this value belongs to the %prep – Eran Ben-Natan Aug 12 '13 at 13:48
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I do not believe this is possible. I found this Q&A on Stackoverflow titled: Reassing values to %define variables in spec file - RPM, which stated this fact in several ways.

In searching I found only the method you mentioned of writing data to temporary files, using mktemp for example.

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