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Date:      Fri, 17 Jun 2011 12:19:54 +0800
From:      wen heping <wenheping@gmail.com>
To:        bf1783@gmail.com
Cc:        Alexey Dokuchaev <danfe@freebsd.org>, Sahil Tandon <sahil@freebsd.org>, Wen Heping <wen@freebsd.org>, cvs-all@freebsd.org, ports-committers@freebsd.org, cvs-ports@freebsd.org
Subject:   Re: cvs commit: ports/sysutils/tmux Makefile
Message-ID:  <BANLkTiko8UJuR8gBOmqKGXYKkzuz-p590Q@mail.gmail.com>
In-Reply-To: <BANLkTik344RMoiKtSejSxmEa14WNAR1x4Q@mail.gmail.com>
References:  <201106160842.p5G8gS6T054738@repoman.freebsd.org> <20110616164733.GA40181@FreeBSD.org> <20110617004742.GD19139@magic.hamla.org> <BANLkTik344RMoiKtSejSxmEa14WNAR1x4Q@mail.gmail.com>

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2011/6/17 b. f. <bf1783@googlemail.com>:
> On 6/17/11, Sahil Tandon <sahil@freebsd.org> wrote:
>> On Thu, 2011-06-16 at 16:47:33 +0000, Alexey Dokuchaev wrote:
>>
>>> On Thu, Jun 16, 2011 at 08:42:28AM +0000, Wen Heping wrote:
>>> > wen =C2=A0 =C2=A0 =C2=A0 =C2=A0 2011-06-16 08:42:28 UTC
>>> >
>>> > =C2=A0 Modified files:
>>> > =C2=A0 =C2=A0 sysutils/tmux =C2=A0 =C2=A0 =C2=A0 =C2=A0Makefile
>>> > =C2=A0 Log:
>>> > =C2=A0 - Fix build when CFLAGS is set in /etc/make.conf
>>>
>>> Hmm, default CPPFLAGS is empty. =C2=A0Judging just from the diff, inste=
ad of
>>> introducing EXTRA_CPPFLAGS, setting CPPFLAGS instead of CFLAGS (which i=
s
>>> bogus in the first place: -I is preprocessor flag) should be enough (no
>>> MAKE_ENV adjustment and extra REINPLACE_CMD hack would be required in t=
his
>>> case as well). =C2=A0I am missing something obvious here?
>>
>> Because of the way upstream Makefile handles CPPFLAGS, it is not so
>> straightforward. =C2=A0This was discussed on freebsd-ports:
>>
>> =C2=A0http://lists.freebsd.org/pipermail/freebsd-ports/2011-June/068218.=
html
>> =C2=A0http://lists.freebsd.org/pipermail/freebsd-ports/2011-May/067930.h=
tml
>
> But this does not seem so different from the many other ports that set
> or alter variables in the port Makefile. =C2=A0If a user overrides these
> changes in an automatically and recursively-included Makefile like
> __MAKE_CONF, or on the command-line, it it the user's problem. Users
> should not pollute their port builds by unconditionally defining
> variables in =C2=A0__MAKE_CONF, and I don't think that we should add
> elaborations to ports to avoid such mistakes. =C2=A0If the submitter of
> ports/157918 wanted non-default CFLAGS for sysutils/tmux, and he
> wanted to define them in __MAKE_CONF, rather than in the other
> automatically-included Makefiles (${.CURDIR}/../Makefile.inc,
> ${MASTERDIR}/../Makefile.inc, ${MASTERDIR}/Makefile.${ARCH}-${OPSYS},
> ${MASTERDIR}/Makefile.${OPSYS}, ${MASTERDIR}/Makefile.${ARCH}, or
> ${MASTERDIR}/Makefile.local), then he could have defined them
> conditionally. =C2=A0If he doesn't, he will break many other ports beside=
s
> systutils/tmux.
>
> So it seems to me that just fixing CPPFLAGS here is better.

We tried just fixing CPPFLAGS, but it fail when define CPPFLAGS in
/etc/make.conf.

wen


>
> b.
>



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