Mail Archives: cygwin/2021/04/22/12:07:12
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| Subject: | Re: Chances for llvm / clang update?
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| To: | cygwin AT cygwin DOT com
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| References: | <002e01d73751$e5066840$af1338c0$@uni-bremen.de>
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| <0e94a48a-f169-5048-f840-85da0ef3f7ce AT SystematicSw DOT ab DOT ca>
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| From: | Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
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| Organization: | Systematic Software
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| Message-ID: | <14b4031d-1015-4b37-0f34-3f2fa1fa1b9f@SystematicSw.ab.ca>
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| Date: | Thu, 22 Apr 2021 09:45:06 -0600
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On 2021-04-22 09:08, Brian Inglis wrote:
> On 2021-04-22 02:31, Andreas Heckel via Cygwin wrote:
>> Is there a chance for an "official" update of clang / llvm. Currently I
> see v8 here on Cygwin while llvm is now at v12.
>>
>> I had tried to build v12 in Cygwin by simply running along the instructions on
>> the llvm page. But I failed at a number of options / packages in the past and
>> only got clang and a few tools like clang-format to run under Cygwin. I
>> apologise, but I really have no clue about building anything properly for
>> Cygwin (yet).
>
> Install the latest llvm and clang *source* packages; and
>
> binary packages: cygport, which pulls in all the usual tools, but also add
> cmake, gnupg2, ninja, cygwin-devel, libc++-devel, libc++abi-devel,
> libedit-devel, libffi-devel, libllvm-devel, libncurses-devel, libpolly-devel,
> libunwind-devel, libxml2-devel, zlib-devel, python3-devel, python3-recommonmark,
> python3-setuptools, and python3-sphinx;
>
> change to the llvm source directory containing the llvm.cygport file;
>
> edit llvm.cygport, and bump the major version 1 at a time, e.g. 9.0.1, 10.0.1
> 11.1.0, 12.0.0, including libllvm{9,10,11,12}, libpolly{9,10,11,12}, and save;
>
> then run:
>
> Â Â Â Â $ cygport llvm.cygport download all check
>
> Pay attention to:
>
> any warning or error messages about required packages missing, some of which may
> be lib...-devel, which you have to install before retrying the build; and
>
> build errors, which you have to resolve.
>
> After a successful build, you will have binary and source tar and hint files
> under llvm-#-1.*86*/dist/llvm/ which you may install on your system using:
>
> Â Â Â Â $ tar -xv -C / -f llvm-#-1.*86*/dist/llvm/llvm-#-1.tar.xz
>
> similarly for prerequisite dependencies and corequisite package tars under:
>
> Â Â Â Â $ ls llvm-#-1.*86*/dist/llvm/{,*/}*-#-1.tar.xz
>
> as packages are built under a virtual root directory, which you can see under
> llvm-#-1.*86*/inst/...
>
> Then repeat the process for clang source updates using each recently built and installed llvm.
You can also browse the cygport and patch files required at:
https://cygwin.com/git-cygwin-packages/?p=git/cygwin-packages/llvm.git
https://cygwin.com/git-cygwin-packages/?p=git/cygwin-packages/clang.git
and you can git clone those projects from the listed URLs as a basis for
building and upgrading: llvm cygport has already been updated there for 9.0.1.
Once you have installed cygport you can browse the local docs using:
$ cygstart /usr/share/doc/cygport/html/manual/index.html
for more information on what's going on.
--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.
[Data in binary units and prefixes, physical quantities in SI.]
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