[OE-core] [PATCH] libnl: fix compilation on hosts without lex

[Eric Bénard]

* libnl's makefiles are calling $(LEX) but only define $(FLEX), thus
compilation on a host which doesn't have lex fails with :
| lex --header-file=route/cls/ematch_grammar.h  -o route/cls/ematch_grammar.c route/cls/ematch_grammar.l
| make[1]: lex: Command not found
| make[1]: *** [route/cls/ematch_grammar.c] Error 127

* this patch fix this by setting LEX variable to flex tool

Signed-off-by: Eric Bénard <eric at eukrea.com>
---
 meta/recipes-support/libnl/libnl_3.2.16.bb |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-support/libnl/libnl_3.2.16.bb b/meta/recipes-support/libnl/libnl_3.2.16.bb
index be3a3a2..0181436 100644
--- a/meta/recipes-support/libnl/libnl_3.2.16.bb
+++ b/meta/recipes-support/libnl/libnl_3.2.16.bb
@@ -3,7 +3,7 @@ HOMEPAGE = "http://www.infradead.org/~tgr/libnl/"
 SECTION = "libs/network"
 
 PE = "1"
-PR = "r0"
+PR = "r1"
 
 LICENSE = "LGPLv2.1"
 LIC_FILES_CHKSUM = "file://COPYING;md5=4fbd65380cdd255951079008b364516c"
@@ -19,6 +19,8 @@ SRC_URI[sha256sum] = "c43a42336c6a3cf559f390e202f8f029d165bd767da7cf7a32a815c570
 
 inherit autotools pkgconfig
 
+EXTRA_OEMAKE += "LEX=flex"
+
 FILES_${PN} = "${libdir}/libnl-3.so.* \
                ${libdir}/libnl.so.* \
                ${sysconfdir}"
-- 
1.7.10.4