[oe] [meta-oe][PATCH] Fix gpsd Yocto pyro build for read only rootfs

[akuster808]

Dan,


On 10/08/2017 12:05 PM, Dan Walkes wrote:
> Attempting to include gpsd on Yocto pyro with IMAGE_FEATURES including
> read-only-rootfs results in an error:

The subject has "pyro" in it. Is this meat for the stable branch "Pyro"
too. It is in Rocko now.

BTW, 3.16 is not in Pyro. looking for clarification.

- armin
> "The following packages could not be configured offline and rootfs is
> read-only"
>
> This stems from a failure during the do_rootfs steps where the /etc/init.d/gpsd
> file is missing during the call to update-rc.d.
>
> This happens because the /etc/init.d/gpsd file is installed during
> package install for gpsd-conf instead of gpsd, and the default value for
> INITSCRIPT_PACKAGES is PN.  To resolve, specify INITSCRIPT_PACKAGES as
> gpsd-conf instead.
>
> Also, as suggested on the Yocto mailing list, refactor to inherit
> update-alternatives and use this to replace the postinst and postrm
> steps.
>
> Signed-off-by: Dan Walkes <danwalkes at trellis-logic.com>
> ---
>  meta-oe/recipes-navigation/gpsd/gpsd_3.16.bb | 17 ++++++++---------
>  1 file changed, 8 insertions(+), 9 deletions(-)
>
> diff --git a/meta-oe/recipes-navigation/gpsd/gpsd_3.16.bb b/meta-oe/recipes-navigation/gpsd/gpsd_3.16.bb
> index 27a600f..f8e6a2b 100644
> --- a/meta-oe/recipes-navigation/gpsd/gpsd_3.16.bb
> +++ b/meta-oe/recipes-navigation/gpsd/gpsd_3.16.bb
> @@ -19,8 +19,9 @@ SRC_URI = "${SAVANNAH_GNU_MIRROR}/${BPN}/${BP}.tar.gz \
>  SRC_URI[md5sum] = "68691b5de4c94f82ec4062b042b5eb63"
>  SRC_URI[sha256sum] = "03579af13a4d3fe0c5b79fa44b5f75c9f3cac6749357f1d99ce5d38c09bc2029"
>  
> -inherit scons update-rc.d python-dir pythonnative systemd bluetooth
> +inherit scons update-rc.d python-dir pythonnative systemd bluetooth update-alternatives
>  
> +INITSCRIPT_PACKAGES = "gpsd-conf"
>  INITSCRIPT_NAME = "gpsd"
>  INITSCRIPT_PARAMS = "defaults 35"
>  
> @@ -86,14 +87,6 @@ do_install_append() {
>      install -m 0644 ${S}/systemd/${BPN}.socket ${D}${systemd_unitdir}/system/${BPN}.socket
>  }
>  
> -pkg_postinst_${PN}-conf() {
> -    update-alternatives --install ${sysconfdir}/default/gpsd gpsd-defaults ${sysconfdir}/default/gpsd.default 10
> -}
> -
> -pkg_postrm_${PN}-conf() {
> -    update-alternatives --remove gpsd-defaults ${sysconfdir}/default/gpsd.default
> -}
> -
>  PACKAGES =+ "libgps libgpsd python-pygps-dbg python-pygps gpsd-udev gpsd-conf gpsd-gpsctl gps-utils"
>  
>  FILES_${PN}-dev += "${libdir}/pkgconfdir/libgpsd.pc ${libdir}/pkgconfdir/libgps.pc \
> @@ -133,3 +126,9 @@ RPROVIDES_${PN} += "${PN}-systemd"
>  RREPLACES_${PN} += "${PN}-systemd"
>  RCONFLICTS_${PN} += "${PN}-systemd"
>  SYSTEMD_SERVICE_${PN} = "${PN}.socket"
> +
> +
> +ALTERNATIVE_${PN} = "gpsd-defaults"
> +ALTERNATIVE_PATH = "${sysconfdir}/default/gpsd.default"
> +ALTERNATIVE_LINK = "${sysconfdir}/default/gpsd"
> +ALTERNATIVE_TARGET = "${sysconfdir}/default/gpsd.default"