powertop: inherit update-alternatives and use a higher priority than busybox

busybox-1.18.4 installs /bin/powertop and the powertop recipe installs
/usr/bin/powertop. So, in PATH, if /bin appears before /usr/bin, we would
run the version offered by busybox, which has a very limited function (e.g.,
no parameter is accepted) and this causes trouble to eclipse plugin.

We can use update-alternatives for powertop with higher priority to resolve
the issue.

Fixes [YOCTO #1208]

(From OE-Core rev: e4102c3d2205371db4da7db7bca1a5853bb3c23e)

Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/meta/recipes-kernel/powertop/powertop_1.13.bb b/meta/recipes-kernel/powertop/powertop_1.13.bb
index dff4fcd27e..472a2bbcff 100644
--- a/meta/recipes-kernel/powertop/powertop_1.13.bb
+++ b/meta/recipes-kernel/powertop/powertop_1.13.bb
@@ -11,7 +11,7 @@ DEPENDS = "virtual/libintl ncurses"
 # powertop 1.13 needs lspci
 RDEPENDS_${PN} = "pciutils"
 
-PR = "r0"
+PR = "r1"
 
 SRC_URI = "http://www.lesswatts.org/projects/powertop/download/powertop-${PV}.tar.gz \
            file://stub_out_the_ncurses_calls_in_dump_mode.patch"
@@ -22,6 +22,12 @@ SRC_URI[sha256sum] = "2bc866089496877dd26d2d316ad5763ab8ecb5e28aefba44bc5d355dcd
 CFLAGS += "${LDFLAGS}"
 EXTRA_OEMAKE = "VERSION=\"${PV}\""
 
+inherit update-alternatives
+ALTERNATIVE_NAME = "powertop"
+ALTERNATIVE_PATH = "${bindir}/powertop"
+ALTERNATIVE_LINK = "${base_bindir}/powertop"
+ALTERNATIVE_PRIORITY = "100"
+
 do_configure() {
         # We do not build ncurses with wide char support
         sed -i -e "s/lncursesw/lncurses/" ${S}/Makefile