powertop: Fix build for !uclibc

* EXTRA_LDFLAGS isn't defined for !uclibc and configure fails
  when it reads it unexpanded, see config.log snippet:

  configure:4177: checking whether the C compiler works
  configure:4199: i586-oe-linux-gcc  -m32 -march=i586 --sysroot=/OE/sysroots/qemux86  -O2 -pipe -g -feliminate-unused-debug-types  -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed ${EXTRA_LDFLAGS} conftest.c  >&5
  i586-oe-linux-gcc: error: ${EXTRA_LDFLAGS}: No such file or directory
  configure:4203: $? = 1
  configure:4241: result: no

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Backported from OpenEmbedded Dizzy branch, commit
c8f9b5c9a8e5179c2013f25decd6a5483df9c716.
Signed-off-by: Jens Rottmann <Jens.Rottmann@ADLINKtech.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/recipes-kernel/powertop/powertop_2.5.bb b/meta/recipes-kernel/powertop/powertop_2.5.bb
index f37d7a76e07c0a1ecaa2295f8f66792d59ae4e38..84cca25ba298456a54bb2ee139517e957a08473f 100644 (file)
--- a/meta/recipes-kernel/powertop/powertop_2.5.bb
+++ b/meta/recipes-kernel/powertop/powertop_2.5.bb
@@ -14,8 +14,9 @@ SRC_URI[sha256sum] = "8b2c08a555d79e1c428863470c41cb023971d74ba4801d80a05e35adee
 inherit autotools gettext
 
 # we need to explicitly link with libintl in uClibc systems
-LDFLAGS += "${EXTRA_LDFLAGS}"
+EXTRA_LDFLAGS ?= ""
 EXTRA_LDFLAGS_libc-uclibc = "-lintl"
+LDFLAGS += "${EXTRA_LDFLAGS}"
 
 # we do not want libncursesw if we can
 do_configure_prepend() {