Date: Sun, 11 Nov 2012 04:09:51 -0800 From: Garrett Cooper <yanegomi@gmail.com> To: Andriy Gapon <avg@freebsd.org> Cc: freebsd-current@freebsd.org, Alie Tan <alie@affle.com> Subject: Re: Compile FreeBSD kernel with gcc48 Message-ID: <CAGH67wSfewym7y_O-azpuxSist6gOJ8FqiXX-ZuQMeRHj7nokQ@mail.gmail.com> In-Reply-To: <509F94F9.7020506@FreeBSD.org> References: <CANuCnH-h_J%2BwEHxUKq=4LQjkM68Ca-3=nQFnMqdb8BV=paiOGw@mail.gmail.com> <CAGH67wQNzwebpAkfE68w0J9FXgv8t3D8k_CgnrwSxnCRKrWJbQ@mail.gmail.com> <509F94F9.7020506@FreeBSD.org>
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On Sun, Nov 11, 2012 at 4:07 AM, Andriy Gapon <avg@freebsd.org> wrote: > on 11/11/2012 12:26 Garrett Cooper said the following: > > On Sun, Nov 11, 2012 at 1:59 AM, Alie Tan <alie@affle.com> wrote: > > > >> Hi, > >> > >> Anyone have experience compiling FreeBSD kernel with gcc48 > >> > >> I have tried it but no success with this in src.conf > > It would be more productive to detail "no success". > > >> C= /usr/local/bin/gcc48 > >> CXX= /usr/local/bin/g++48 > >> CWARNFLAGS= -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes > >> \-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual > >> \-Wno-pointer-sign -D__FreeBSD_cc_version=0 \-Wno-unused-function > >> -Wno-inline -Wno-format \-Wno-uninitialized -Wno-array-bounds > >> -Wno-missing-prototypes > >> NO_WERROR= 1 > >> > >> Another question, is there any benchmark for LLVM/Clang vs gcc45, gcc46, > >> gcc47 or gcc48? > >> > > > > Uh, probably won't work because of FreeBSD modifications to gcc not being > > present in upstream IIRC... > > Which exact modifications do you have in mind? > I was able to compile the kernel with gcc46. > > I used these settings: > > CC= /usr/local/bin/gcc46 > CXX= /usr/local/bin/g++46 > AS= /usr/local/bin/as > LD= /usr/local/bin/ld > NO_WERROR=yes > WERROR= > > CWARNFLAGS= -Wall -Wredundant-decls -Wnested-externs > -Wstrict-prototypes \ > -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual \ > -Wno-pointer-sign -D__FreeBSD_cc_version=800001 \ > -Wno-unused-function -Wno-inline > > I guess that perhaps 'WERROR=' made the difference. > -fformat-extensions ? -Garrett
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