Neal Becker writes:
Sam Varshavchik wrote: > Neal Becker writes: > >> How can I apply a patch only if the version of a dependency is < x? > > You mean you want to specify the dependency's version in a macro, that you> put into Requires:? If so, just use the macro in your build script, it'll be> expanded, and you can test its value. Bare-bones shell isn't usually > convenient for understanding most kinds of version number formats. You may > need to do something fancy.I mean, a patch is needed only if one of the BR versions is less than a.b. So Iwant to conditionally apply a patch, based on the version of the BR.
I see.You're going to have to figure out what version of a dependency you're building against. I suppose you can can "rpm -q --queryformat '%{VERSION}' $packagename", and get the version that way, then figure out if you want to apply a patch. That approach "feels" wrong. I would look at your dependency's files and see if its version can be retrieved from your dependency's installations. If your dependency uses pkgconfig, it's as simple as "pkg-config --version $packagename".
Once you have the version, you can apply the patch. if <<version test goes here>> then %patchX [options] fi
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