Date: Thu, 5 Apr 2018 17:30:04 -0700 From: Pete Wright <pete@nomadlogic.org> To: sgk@troutmask.apl.washington.edu, Conrad Meyer <cem@freebsd.org> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: clang manual page? Message-ID: <347cc907-96b3-140d-5a8f-084f91283be5@nomadlogic.org> In-Reply-To: <20180406001514.GA43793@troutmask.apl.washington.edu> References: <20180405223852.GA43120@troutmask.apl.washington.edu> <CAG6CVpUpj7B6ujUSCUkznCBKSGKcuM2czZ=VBgKK%2Bkm5wFwfmg@mail.gmail.com> <20180406001514.GA43793@troutmask.apl.washington.edu>
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On 04/05/2018 17:15, Steve Kargl wrote: > This assumes that a gcc(1) is available on the system. > > % man gcc > No manual entry for gcc > > If the system compiler is clang/clang++, then it ought to be > documented better than it currently is. Ian's suggests for > 'clang --help' is even worse > > % clang --help | grep -- -std > -cl-std=<value> OpenCL language standard to compile for. > -std=<value> Language standard to compile for > -stdlib=<value> C++ standard library to use > > Does <value> == <language>? > a quick google search turns up the following additional information: "clang supports the -std option, which changes what language mode clang uses. The supported modes for C are c89, gnu89, c99, gnu99, c11, gnu11, c17, gnu17, and various aliases for those modes. If no -std option is specified, clang defaults to gnu11 mode. Many C99 and C11 features are supported in earlier modes as a conforming extension, with a warning. Use |-pedantic-errors| to request an error if a feature from a later standard revision is used in an earlier mode." https://clang.llvm.org/docs/UsersManual.html -p -- Pete Wright pete@nomadlogic.org @nomadlogicLA
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