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To: Robin Jarry <robin.jarry@6wind.com>
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From: Ferruh Yigit <ferruh.yigit@intel.com>
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Date: Fri, 25 Nov 2016 11:27:04 +0000
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Subject: Re: [dpdk-dev] [PATCH] kni: avoid using lsb_release script
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On 11/25/2016 9:52 AM, Robin Jarry wrote:
> The lsb_release script is part of an optional package which is not
> always installed. On the other hand, /etc/lsb-release is always present
> even on minimal Ubuntu installations.
> 
>     root@ubuntu1604:~# dpkg -S /etc/lsb-release
>     base-files: /etc/lsb-release
> 
> Read the file if present and use the variables defined in it.
> 
> Signed-off-by: Robin Jarry <robin.jarry@6wind.com>
> ---
>  lib/librte_eal/linuxapp/kni/Makefile | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/lib/librte_eal/linuxapp/kni/Makefile b/lib/librte_eal/linuxapp/kni/Makefile
> index 4e99e07e7aec..63b9ac8779f8 100644
> --- a/lib/librte_eal/linuxapp/kni/Makefile
> +++ b/lib/librte_eal/linuxapp/kni/Makefile
> @@ -44,8 +44,12 @@ 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 lsb_release -si 2>/dev/null),Ubuntu)
> -MODULE_CFLAGS += -DUBUNTU_RELEASE_CODE=$(shell lsb_release -sr | tr -d .)
> +ifneq ($(wildcard /etc/lsb-release),)
> +include /etc/lsb-release
> +endif

What about:
+-include /etc/lsb-release

> +
> +ifeq ($(DISTRIB_ID),Ubuntu)
> +MODULE_CFLAGS += -DUBUNTU_RELEASE_CODE=$(subst .,,$(DISTRIB_ID))

s/DISTRIB_ID/DISTRIB_RELEASE

>  UBUNTU_KERNEL_CODE := $(shell echo `grep UTS_RELEASE $(RTE_KERNELDIR)/include/generated/utsrelease.h \
>  	 | cut -d '"' -f2 | cut -d- -f1,2 | tr .- ,`,1)
>  MODULE_CFLAGS += -D"UBUNTU_KERNEL_CODE=UBUNTU_KERNEL_VERSION($(UBUNTU_KERNEL_CODE))"
>