[OE-core] [PATCH] package_ipk: allow to specify OPKG_ARGS in local.conf

[Vladimir Zapolskiy]

If user specific parameters to opkg are set in local.conf, they are
rewritten in package_ipk.bbclass and ignored, instead append
package_ipk specific arguments to the user defined ones.

The change is needed, if a user has to pass an alternative path to a
temporary directory for opkg, e.g.

  OPKG_ARGS = "--tmp-dir=${TOPDIR}/tmp-opkg"

The default /tmp directory may be unusable for do_rootfs task, for
example if there is no enough space or /tmp is mounted with noexec
mount option, then an alternative path allows to complete do_rootfs
and fix the problems like this:

  ERROR: Unable to install packages.
  ...
  sh: /tmp/opkg-5jPLag/run-postinsts-UsUtaI/preinst: /bin/sh: bad interpreter: Permission denied
  sh: /tmp/opkg-5jPLag/base-files-4hFwQS/preinst: /bin/sh: bad interpreter: Permission denied
  sh: /tmp/opkg-5jPLag/run-postinsts-UsUtaI/preinst: /bin/sh: bad interpreter: Permission denied
  sh: /tmp/opkg-5jPLag/busybox-syslog-sJmfbw/preinst: /bin/sh: bad interpreter: Permission denied
  ...

Signed-off-by: Vladimir Zapolskiy <vz at mleia.com>
---
 meta/classes/package_ipk.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/package_ipk.bbclass b/meta/classes/package_ipk.bbclass
index 4dd7a7e..51bee28 100644
--- a/meta/classes/package_ipk.bbclass
+++ b/meta/classes/package_ipk.bbclass
@@ -10,7 +10,7 @@ PKGWRITEDIRIPK = "${WORKDIR}/deploy-ipks"
 # Program to be used to build opkg packages
 OPKGBUILDCMD ??= "opkg-build"
 
-OPKG_ARGS = "--force_postinstall --prefer-arch-to-version"
+OPKG_ARGS += "--force_postinstall --prefer-arch-to-version"
 OPKG_ARGS += "${@['', '--no-install-recommends'][d.getVar("NO_RECOMMENDATIONS", True) == "1"]}"
 OPKG_ARGS += "${@['', '--add-exclude ' + ' --add-exclude '.join((d.getVar('PACKAGE_EXCLUDE', True) or "").split())][(d.getVar("PACKAGE_EXCLUDE", True) or "") != ""]}"
 
-- 
2.1.4