Date: Tue, 28 Jun 2011 22:06:20 +0200 From: Niclas Zeising <niclas.zeising@gmail.com> To: Pan Tsu <inyaoo@gmail.com> Cc: Gabor PALI <pgj@FreeBSD.org>, freebsd-current@freebsd.org, freebsd-ports@freebsd.org Subject: Re: -Qunused-parameter and clang (was Re: GHC Port on 9-CURRENT) Message-ID: <4E0A343C.6000008@gmail.com> In-Reply-To: <86k4c5epbm.fsf@gmail.com> References: <4E0679AA.20100@shadowsun.net> <4E06863F.7010104@FreeBSD.org> <4E0A2172.7000800@daemonic.se> <86k4c5epbm.fsf@gmail.com>
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On 2011-06-28 21:19, Pan Tsu wrote: > Niclas Zeising <zeising@daemonic.se> writes: > >> Sorry for hijacking this thread, and cross posting. >> >> On 2011-06-26 03:07, Gabor PALI wrote: >>> >>> >>>> With Clang, an error occurs in one of the configure scripts, because >>>> Clang warns about unused command-line arguments, and the configure >>>> script assumes that to be a compiler error. You can deal with this by >>>> adding -Qunused-parameter to CFLAGS. >>> >>> Thanks for investigating this. >>> >> >> This should probably be made the default, at least for ports when clang >> is compiled, since the output generated when not using >> -Qunused-parameter confuses configure scripts, and stops at least >> FireFox 5 from compiling, that I know of. > > Do you use ccache? Try without. > > For example, the combo confuses libtool > It has nothing to do with cccache. The issue is that clang by default warns when passed flags (-std= -f -W etc.) that's not used during the compilation/linking. This can be silenced with -Qunused-arguments, and if not, it confuses configure scripts that believe this is an error in the code it uses to test for features. Regards! -- Niclas Zeising
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