silence makefile warning on ubuntu

shell error on ubuntu when OS_VERSION_ID == 16.04:
/bin/sh: 1: [: Illegal number: 16.04

Change-Id: I8db55f751ad7fb677a6565cbbce93a9bc08060b7
Signed-off-by: Gabriel Ganne <gabriel.ganne@enea.com>

diff --git a/Makefile b/Makefile
index e5eb1b3..1548f36 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -78,7 +78,7 @@ ifeq ($(OS_ID)-$(OS_VERSION_ID),fedora-25)
        RPM_DEPENDS += python-devel
        RPM_DEPENDS += python2-virtualenv
        RPM_DEPENDS_GROUPS = 'C Development Tools and Libraries'
-else ifeq ($(shell if [ "$(OS_VERSION_ID)" -gt "25" ] ; then echo "y" ; fi),"y")
+else ifeq ($(shell if [ $(echo "$(OS_VERSION_ID) > 25" | bc) -eq 1 ] ; then echo "y" ; fi),"y")
        RPM_DEPENDS += python2-devel
        RPM_DEPENDS += python2-virtualenv
        RPM_DEPENDS_GROUPS = 'C Development Tools and Libraries'