[Buildroot] [PATCH v2] infra/ccache: avoid color diagnostics with GCC older than v4.9

[Yann E. MORIN]

Carlos, All,

On 2017-02-13 20:41 -0200, Carlos Santos spake thusly:
> Sorry, I forgot so send this yesterday. Here is a reliable reproducer:
> 
> $ cat defconfig 
> BR2_powerpc=y
> BR2_powerpc_8548=y
> BR2_CCACHE=y
> BR2_TOOLCHAIN_EXTERNAL=y
> BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
> BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/powerpc-ctng_e500v2-linux-gnuspe.tar.xz"
> BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="powerpc-ctng_e500v2-linux-gnuspe"
> BR2_TOOLCHAIN_EXTERNAL_GCC_4_7=y
> BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_12=y
> BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
> BR2_TOOLCHAIN_EXTERNAL_CXX=y
> BR2_PACKAGE_OPENSSL=y
> $ 
> $ echo $GCC_COLORS 
> error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01
> $
> $ make V=1 BR2_JLEVEL=1 openssl-dirclean openssl

Indeed, I could reproduce. Thanks.

So, I think Arnout is right in saying we should just globally unexport
GCC_COLORS and be done with that.

Regards,
Yann E. MORIN.

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