[Rpm-maint] [rpm-software-management/rpm] check for rpmlib version (Discussion #2841)

[Oliver Kurth]

Thanks for replying.

I have this code:
```
...
                    } else if (strcmp(token, "nodb") == 0){
                        pConf->rpmTransFlags |= RPMTRANS_FLAG_NODB;
                    } else if (strcmp(token, "noconfigs") == 0){
                        pConf->rpmTransFlags |= RPMTRANS_FLAG_NOCONFIGS;
                    } else {
                        pr_err("unknown tsflag '%s'\n", token);
...
```
so for `RPMTRANS_FLAG_NODB` I want to build this conditionally, depending on whether `RPMTRANS_FLAG_NODB` is defined or not. As I said, I cannot use `#ifdef RPMTRANS_FLAG_NODB` because it's an enum value, not a macro. What do you recommend to do here?

FWIW, the project uses `cmake`. It's https://github.com/vmware/tdnf . Of course I could create some setting like `HAVE_RPMTRANS_FLAG_NODB` and set that as an argument to `cmake`, but I'd prefer something automatic.

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