[dpdk-dev] mk: fix shell errors when building with clang

  On my system, the version of the compiler is not properly retrieved,
resulting in strange logs when building the dpdk:
  /bin/sh: line 0: test: too many arguments

This happens when mk/toolchain/clang/rte.toolchain-compat.mk is included
from a directory that use gcc to build (ex: kernel modules). In that
case, the CLANG_VERSION variable contains spaces that breaks some shell
calls to the test program.

The error is because the output of "gcc -v" on my system contains 2 lines
that matches the "version" string:

  Configured with: ../src/configure -v \
    --with-pkgversion='Debian 6.3.0-6' [...]
  gcc version 6.3.0 20170205 (Debian 6.3.0-6)

This may be specific to Debian. Fix it by specializing the grep.

Fixes: 2ef6eea891e5 ("mk: add clang toolchain")

Cc: stable@dpdk.org
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 mk/toolchain/clang/rte.toolchain-compat.mk | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
  

2017-04-06 16:12, Olivier Matz:
> On my system, the version of the compiler is not properly retrieved,
> resulting in strange logs when building the dpdk:
>   /bin/sh: line 0: test: too many arguments
> 
> This happens when mk/toolchain/clang/rte.toolchain-compat.mk is included
> from a directory that use gcc to build (ex: kernel modules). In that
> case, the CLANG_VERSION variable contains spaces that breaks some shell
> calls to the test program.
> 
> The error is because the output of "gcc -v" on my system contains 2 lines
> that matches the "version" string:
> 
>   Configured with: ../src/configure -v \
>     --with-pkgversion='Debian 6.3.0-6' [...]
>   gcc version 6.3.0 20170205 (Debian 6.3.0-6)
> 
> This may be specific to Debian. Fix it by specializing the grep.
> 
> Fixes: 2ef6eea891e5 ("mk: add clang toolchain")
> 
> Cc: stable@dpdk.org
> Signed-off-by: Olivier Matz <olivier.matz@6wind.com>

Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>

Applied, thanks