llvm dev - Jan 2015 - [LLVMdev] [3.6 Release] RC1 has been tagged, Testing Phase I begins

> > Shouldn't we be
> > moving to CMake based release anyway?
> 
> Oh, the joy of having two build systems. :-(
> 
> As long as we have  two, it doesn't really matter which one we use to
> build the binaries, as users building from source will still rely on
> both to be working.
> 
>  - Hans
On that subject, are you aware that the release builds for linux don't build
compiler-rt for any target other than x86/x86_64? I noticed it today when I
tried the address sanitizer for Mips and found I didn't have the runtime.

It seems that targets have to be explicitly enabled in
tools/clang/runtime/compiler-rt/Makefile.

On Wed, Jan 21, 2015 at 1:52 PM, Daniel Sanders
<Daniel.Sanders at imgtec.com> wrote:
>> > Shouldn't we be
>> > moving to CMake based release anyway?
>>
>> Oh, the joy of having two build systems. :-(
>>
>> As long as we have  two, it doesn't really matter which one we use
to
>> build the binaries, as users building from source will still rely on
>> both to be working.
>>
>>  - Hans
>
> On that subject, are you aware that the release builds for linux don't
build compiler-rt for any target other than x86/x86_64? I noticed it today when
I tried the address sanitizer for Mips and found I didn't have the runtime.
>
> It seems that targets have to be explicitly enabled in
tools/clang/runtime/compiler-rt/Makefile.
+kcc and samsonov who know the ASan build best

Looks like when ASan support for MIPS landed in r211587, no one
updated the autoconf build. That was before 3.5, so I guess that one
also shipped without ASan support for MIPS.

> -----Original Message-----
> From: hwennborg at google.com [mailto:hwennborg at google.com] On Behalf
> Of Hans Wennborg
> Sent: 21 January 2015 22:25
> To: Daniel Sanders
> Cc: Renato Golin; llvmdev; cfe-dev; Ben Pope; Sylvestre Ledru; Dimitry
> Andric; Sebastian Dreßler; Nikola Smiljanić; Kostya Serebryany;
> vonosmas at gmail.com
> Subject: Re: [3.6 Release] RC1 has been tagged, Testing Phase I begins
> 
> On Wed, Jan 21, 2015 at 1:52 PM, Daniel Sanders
> <Daniel.Sanders at imgtec.com> wrote:
> >> > Shouldn't we be
> >> > moving to CMake based release anyway?
> >>
> >> Oh, the joy of having two build systems. :-(
> >>
> >> As long as we have  two, it doesn't really matter which one we
use to
> >> build the binaries, as users building from source will still rely
on
> >> both to be working.
> >>
> >>  - Hans
> >
> > On that subject, are you aware that the release builds for linux
don't build
> compiler-rt for any target other than x86/x86_64? I noticed it today when I
> tried the address sanitizer for Mips and found I didn't have the
runtime.
> >
> > It seems that targets have to be explicitly enabled in
> tools/clang/runtime/compiler-rt/Makefile.
> 
> +kcc and samsonov who know the ASan build best
> 
> Looks like when ASan support for MIPS landed in r211587, no one
> updated the autoconf build. That was before 3.5, so I guess that one
> also shipped without ASan support for MIPS.
That's right. I didn't try to test ASan for 3.5 as I was focusing on
getting little endian builds up and running.

The main reason I mentioned the build issue on this thread is that AArch64 and
ARM releases also ship without sanitizer libraries and I thought that might be
surprising.

On Wed, Jan 21, 2015 at 2:24 PM, Hans Wennborg <hans at chromium.org>
wrote:
> On Wed, Jan 21, 2015 at 1:52 PM, Daniel Sanders
> <Daniel.Sanders at imgtec.com> wrote:
> >> > Shouldn't we be
> >> > moving to CMake based release anyway?
> >>
> >> Oh, the joy of having two build systems. :-(
> >>
> >> As long as we have  two, it doesn't really matter which one we
use to
> >> build the binaries, as users building from source will still rely
on
> >> both to be working.
> >>
> >>  - Hans
> >
> > On that subject, are you aware that the release builds for linux
don't
> build compiler-rt for any target other than x86/x86_64? I noticed it today
> when I tried the address sanitizer for Mips and found I didn't have the
> runtime.
> >
> > It seems that targets have to be explicitly enabled in
> tools/clang/runtime/compiler-rt/Makefile.
>
> +kcc and samsonov who know the ASan build best
>
> Looks like when ASan support for MIPS landed in r211587, no one
> updated the autoconf build. That was before 3.5, so I guess that one
> also shipped without ASan support for MIPS.
>
ASan support for MIPS was indeed added recently. We currently only build
MIPS version of runtime on MIPS-Linux host and only in CMake build (we
don't cross-compile sanitizer runtimes, and it's barely feasible - e.g.
we
use
a lot of system headers). autoconf build was not updated, and I would
prefer not to touch it, that is, not to add new features there.

-- 
Alexey Samsonov
vonosmas at gmail.com
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