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Ben Lancaster wrote:
> How does one make an RPM from a source tarball and an RPM spec file?
> I need to patch the source of MythTV to fix a rather annoying bug,
> and then make an RPM based on the ATRPMS spec for the package. Of
> course, I could just go ahead and install from source, but this will
> mess up my yum upgrades/dependencies.
Here's how I'd do it (for the most part). I'll use $file, $package,
and $version in place of the real names, replace them with whatever
values you need.
First, install the fedora-rpmdevtools. Run fedora-buildrpmtree to
create an rpm build tree where spec files, sources, and rpms will
go.
Install the mythtv source package from atrpms (rpm -ivh $file.src.rpm).
Prepare the mythtv sources using the command rpmbuild -bp $file.spec.
This will unpack the sources into ~/rpmbuild/BUILD/$package-$version.
Make the changes you need to the sources and prepare a patch. There
is a script in the rpm package named gendiff that is handy for this.
To use it you would make a backup of the files you are changing before
you make any changes. If you're changing $file.c, do a cp -a
$file.c$extension. Use the same extension for all of the files you
need to modify. After you're done making the changes, cd to
~/rpmbuild/BUILD and run gendiff $package-$version $extension >
../SOURCES/$package-$version-$extension.patch.
Edit the spec file and add the patch file you just created. You will
need to make two changes to the spec file. First, add
Patch0: patchfile
where the other Source and Patch lines are. Change 0 to something
else if there is already a Patch0.
Then, in the %prep section of the specfile, add
%patch0 -p1 -b $extension
after the %setup line and any other patches. Adjust the 0 to match
the number for your patch above.
After this, you should be able to run rpmbuild -ba $file.spec and have
it rebuild a binary and source rpm for you. If your patch adds any
new files, you will need to add them to the %files section. You may
also want to add a %changelog entry as well.
Hopefully I haven't overlooked too many important steps here. I'm
sure others will point them out if I have. :)
HTH,
- --
Todd OpenPGP -> KeyID: 0xD654075A | URL: www.pobox.com/~tmz/pgp
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