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To: Olivier Matz <olivier.matz@6wind.com>, dev@dpdk.org
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From: Ferruh Yigit <ferruh.yigit@intel.com>
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Date: Mon, 30 May 2016 16:49:55 +0100
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Subject: Re: [dpdk-dev] [PATCH] kni: fix use of undefined comma variable in
 makefile
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On 5/30/2016 12:56 PM, Olivier Matz wrote:
> The $(comma) variable is not defined in this Makefile, nor in
> any included Makefile. Seen while doing a "make clean" on ubuntu:
> 
>   $ make clean
>   == Clean lib
>   == Clean lib/librte_compat
>   == Clean lib/librte_eal
>   == Clean lib/librte_eal/common
>   == Clean lib/librte_eal/linuxapp
>   == Clean lib/librte_eal/linuxapp/eal
>   == Clean lib/librte_eal/linuxapp/igb_uio
>   == Clean lib/librte_eal/linuxapp/kni
>   tr: missing operand after ‘.-’
>   Two strings must be given when translating.
>   Try 'tr --help' for more information.

I don't observe this error on Ubuntu.

Also did a quick check and $(comma) seems defined, but not sure exactly
where. What I test:

$ lsb_release -si
Ubuntu


$ git diff
diff --git a/lib/librte_eal/linuxapp/kni/Makefile
b/lib/librte_eal/linuxapp/kni/Makefile
index ac99d3f..dcad241 100644
--- a/lib/librte_eal/linuxapp/kni/Makefile
+++ b/lib/librte_eal/linuxapp/kni/Makefile
@@ -90,4 +90,7 @@ SRCS-y += kni_net.c
 SRCS-y += kni_ethtool.c
 SRCS-$(CONFIG_RTE_KNI_VHOST) += kni_vhost.c

+test_comma:
+       @echo "= comma: $(comma) ="
+



$ make -C lib/librte_eal/linuxapp/kni test_comma
make: Entering directory '.../dpdk/lib/librte_eal/linuxapp/kni'
= comma: , =
make: Leaving directory '.../dpdk/lib/librte_eal/linuxapp/kni'