linux-kernel - Re: [PATCH v2 4/5] kconfig: refactor ncurses package checks for building mconf

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Message-ID: <20180520100601.GB18441@ravnborg.org>
Date:   Sun, 20 May 2018 12:06:01 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     linux-kbuild@...r.kernel.org,
        "Luis R . Rodriguez" <mcgrof@...e.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Ulf Magnusson <ulfalizer@...il.com>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arvind Prasanna <arvindprasanna@...il.com>
Subject: Re: [PATCH v2 4/5] kconfig: refactor ncurses package checks for
 building mconf

Hi Masahiro

On Sun, May 20, 2018 at 05:16:52PM +0900, Masahiro Yamada wrote:
> The mconf (or its infrastructure, lxdiaglog) depends on ncurses.
> Move and rename check-lxdialog.sh to mconf-cfg.sh to make it work in
> the same way as for qconf and gconf.
> 
> According to Randy's report, we still need to carry the fallback code
> in case the pkg-config fails to find ncurses.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
> -
> -# Use recursively expanded variables so we do not call gcc unless
> -# we really need to do so. (Do not call gcc as part of make mrproper)
> -HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) \
> -                    -DLOCALE
...

>  # Add environment specific flags
> -HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCC) $(HOSTCFLAGS))
> -HOST_EXTRACXXFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCXX) $(HOSTCXXFLAGS))
> -
> +HOST_EXTRACFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCC) $(HOSTCFLAGS)) \
> +		    -DLOCALE
> +HOST_EXTRACXXFLAGS += $(shell $(CONFIG_SHELL) $(srctree)/$(src)/check.sh $(HOSTCXX) $(HOSTCXXFLAGS)) \
> +		    -DLOCALE

Any chance that the ugly hack in check.sh could be ported over to use pkg-config?

There should be no need to specify both $(shell ...) AND $(CONFIG_SHELL)
This was not introduced by this commit, but as the Makefile is cleaned up include this too.

	Sam