[dpdk-dev] [PATCH] kni: Use utsrelease.h to determine Ubuntu kernel version

[Simon Kagstrom]

/proc/version_signature is the version for the host machine, but in
e.g., chroots, this does not need to match that DPDK is built for. Use
utsrelease.h from the kernel sources instead and fake the upload
version.

Signed-off-by: Simon Kagstrom <simon.kagstrom at netinsight.net>
Signed-off-by: Johan Faltstrom <johan.faltstrom at netinsight.net>
---
 lib/librte_eal/linuxapp/kni/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/librte_eal/linuxapp/kni/Makefile b/lib/librte_eal/linuxapp/kni/Makefile
index fb673d9..ac99d3f 100644
--- a/lib/librte_eal/linuxapp/kni/Makefile
+++ b/lib/librte_eal/linuxapp/kni/Makefile
@@ -44,10 +44,10 @@ MODULE_CFLAGS += -I$(RTE_OUTPUT)/include -I$(SRCDIR)/ethtool/ixgbe -I$(SRCDIR)/e
 MODULE_CFLAGS += -include $(RTE_OUTPUT)/include/rte_config.h
 MODULE_CFLAGS += -Wall -Werror
 
-ifeq ($(shell test -f /proc/version_signature && lsb_release -si 2>/dev/null),Ubuntu)
+ifeq ($(shell lsb_release -si 2>/dev/null),Ubuntu)
 MODULE_CFLAGS += -DUBUNTU_RELEASE_CODE=$(shell lsb_release -sr | tr -d .)
-UBUNTU_KERNEL_CODE := $(shell cut -d' ' -f2 /proc/version_signature | \
-                        cut -d'~' -f1 | cut -d- -f1,2 | tr .- $(comma))
+UBUNTU_KERNEL_CODE := $(shell echo `grep UTS_RELEASE $(RTE_KERNELDIR)/include/generated/utsrelease.h \
+	 | cut -d '"' -f2 | cut -d- -f1,2 | tr .- $(comma)`,1)
 MODULE_CFLAGS += -D"UBUNTU_KERNEL_CODE=UBUNTU_KERNEL_VERSION($(UBUNTU_KERNEL_CODE))"
 endif
 
-- 
1.9.1