Re: Debian packaging for packages that provide the same files

[Wookey <wookey@wookware.org>]

On 2017-01-11 14:25 -0800, J.T. Conklin wrote:
> Niels Thykier <niels@thykier.net> writes:

> And now that I've refreshed my memory by reading
> (https://www.debian.org/doc/manuals/maint-guide/dother.en.html#install),
> I see that *.install files can specify both the source and destination
> paths. So maybe I can forgo configure/make/install entirely and have 
> each debian/<pkg>.install file copy files directly from the sources.

You can. I've just been doing this for a package which just installs
binary drivers from existing upstream collections of drivers. This is
exactly analagous to your set-up, I think, in that I have a lot of
'hardware/arch/usage/<set of files>' dirs, and each one is packed up
into a very similar-looking package called
foo-hardware-usage-driver_ver_arch.deb

I have an ugly shell script to generate the control file listing all
the packages and the set of executable *.install files to do the
copying (below).

That's pretty-much what you want, I think. Please don't copy my shell
script, it's currently embarassing and rather too specific and
fragile, but it illustrates that this is actually fairly
straightforward :-)

You should do something rather fancier that actually traversed the
available directories rather than hardcoded it. You could also use
make to ensure that it was actually run to keep things uptodate, etc.

#!/bin/sh

set -e
#set -x

EGLDEPS="libegl1-x11, libgles1, libgles2, libopencl1"

# make install file and control entry for each platform/arch/gpu/display flavour
mkpkg() {
  # generate dh_install file
  installfile="mali-${1}-${2}-driver.install"
  echo "#! /usr/bin/dh-exec" > "${installfile}"
  echo "${1}/\${DEB_HOST_ARCH}/${2}/* /usr/lib/\${DEB_HOST_MULTIARCH}/" >> "${installfile}"
  chmod +x ${installfile}
  
  #then add control entry
  case "$1" in
      4xx)
	  CODENAME="utgard"
	  ;;
      t60x|t62x)
	  CODENAME="midgard"
	  ;;
      t76x)
	  CODENAME="bifrost"
	  ;;
  esac
  case "$2" in
      fbdev)
	  TYPE="framebuffer"
	  DESC="the kernel framebuffer"
	  ;;
      x11)
	  TYPE="x11"
	  DESC="x11"
	  ;;
      wayland)
	  TYPE="wayland"
	  DESC="wayland"
	  ;;
      fbdev-wayland)
	  TYPE="wayland(no DRM)"
	  DESC="wayland without DRM"
	  ;;
      wayland-fbdev)
	  TYPE="wayland"
	  DESC="wayland"
	  ;;

  esac

  cat >> control <<EOF

Package: mali-${1}-${2}-driver
Architecture: ${3} ${4}
Pre-Depends: \${misc:Pre-Depends}
Depends: \${shlibs:Depends}, \${misc:Depends}, mali-kernel-modules
Provides: ${EGLDEPS}
Conflicts: ${EGLDEPS}
Replaces: ${EGLDEPS}
Description: Mali binary ${TYPE} driver for ${1}
 This is a binary graphics driver for Arm Mali GPU hardware. It
 provides optimized hardware acceleration of OpenGL applications using
 ${DESC}, on Mali ${1} (${CODENAME}) GPU hardware.
EOF
  
}

#put source pkg in control file
cat control-header > control

#nasty hack for arch support - fixme!
ARCH1=armhf
ARCH2=arm64
mkpkg t62x fbdev ${ARCH1} ${ARCH2} 
#mkpkg t62x wayland ${ARCH1} ${ARCH2}
#mkpkg t62x x11 ${ARCH1} ${ARCH2}

ARCH=arm64
mkpkg t62x wayland-fbdev ${ARCH}
mkpkg t62x fbdev-wayland ${ARCH}


ARCH=armhf
mkpkg t60x fbdev ${ARCH}
mkpkg t60x x11 ${ARCH}
mkpkg t62x wayland ${ARCH}
mkpkg t62x x11 ${ARCH}
mkpkg t76x fbdev ${ARCH}
mkpkg t76x x11 ${ARCH}


Wookey
-- 
Principal hats:  Linaro, Debian, Wookware, ARM
http://wookware.org/

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