SRB2/libs/libopenmpt/SRB2NOTE-DEBIAN.md

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# libopenmpt Debian backport info
Backported libopenmpt 0.4.0 packages are available at ppa:stjr/srb2
for Ubuntu Disco, Cosmic, Bionic, Xenial, and Trusty as of 2019/01/04.
Debian Jessie users should use the Trusty package. Later Debian versions
may use Disco or another working version.
* libopenmpt 0.4.0 source package: http://archive.ubuntu.com/ubuntu/pool/universe/libo/libopenmpt/libopenmpt_0.4.0-1.dsc
# Backporting from Disco to Cosmic and Bionic
Cosmic and Bionic require no changes to the source package. They have
the prerequisite `debhelper` and `dpkg-dev` versions, a matching
`automake` version (1.15), as well as G++ > 5.
Use the `backportpackage` script to automatically tag the package to
Cosmic and Bionic, then upload to PPA:
```
sudo apt install ubuntu-dev-tools
export UBUMAIL="John Doe <email@com.com>" # Name and email associated with your PGP sign key
backportpackage -d [cosmic/bionic] -u [path-to-ppa] --key=[key-fingerprint] http://archive.ubuntu.com/ubuntu/pool/universe/libo/libopenmpt/libopenmpt_0.4.0-1.dsc
```
# Backporting from Disco to Xenial
Download the package:
```
dget http://archive.ubuntu.com/ubuntu/pool/universe/libo/libopenmpt/libopenmpt_0.4.0-1.dsc
```
Xenial has an earlier `debhelper` version, but the rest of the prerequisites
are available.
The required changes (see patch `debian/libopenmpt-0.4.0-xenial-backport.diff` in this directory):
* `debian/control`
* Add `automake` to Build-Depends
* Change `debhelper` version to `(>= 9.0~)`
* `debian/compat`
* Change to `10`
Then run these commands:
```
dch -i # Edit the changelog; make sure the Name and email match the PGP sign key and that the changelog targets xenial
debuild -s -d -k0x[key-fingerprint] # Build the updated package
dput [path-to-ppa] [path-to-changes-file] # Upload to PPA
```
# Backporting from Disco to Trusty
Download the package:
```
dget http://archive.ubuntu.com/ubuntu/pool/universe/libo/libopenmpt/libopenmpt_0.4.0-1.dsc
```
Trusty requires more changes because it uses G++ 4.8 whereas the source
package expects G++ >= 5. Automake is an earlier version as well --
1.14 vs 1.15 -- so `autoreconf` needs to be run at build time.
The required changes (see patch `debian/libopenmpt-0.4.0-trusty-backport.diff` in this directory):
* `debian/control`
* Add `automake` and `libtool` to Build-Depends
* Change `debhelper` version to `(>= 9.0~)`
* Change `dpkg-dev` version to `(>= 1.17.0)`
* `debian/compat`
* Change to `10`
* `debian/rules`
* Under `override_dh_auto_configure`, input this line as the first command:
`autoreconf --force --install`
* This re-configures the package for Automake 1.14
* `debian/libopenmpt-modplug1.symbols` and `debian/libopenmpt0.symbols`
* Delete these files
* The C++ ABI for G++ 4.8 is incompatible with G++ >= 5, so the
generated symbols will be different than the expected symbols
in the `*.symbols` files. Deleting these files will skip the
symbol check.
Then run these commands:
```
dch -i # Edit the changelog; make sure the Name and email match the PGP sign key and that the changelog targets trusty
debuild -s -d -k0x[key-fingerprint] # Build the updated package
dput [path-to-ppa] [path-to-changes-file] # Upload to PPA
```