[waffle] Building Waffle with XCode?

[Chad Versace]

Waffle didn't always require support for __thread and tls-model. The
wcore_tinfo.c used to have two code paths: one for environments that
supported those and environments that didn't.

At one point, I removed support because I didn't expect any users would
still use such environments. But, now I see that I was wrong. I'll submit
patches to revert that removal and wait for your tested-by.

The stable 1.2 branch still has support for environments
that lack __thread and tls-model, because that removal only exists on master.
I believe that wcore_tinfo.c is buggy on 1.2, but it should still at least
compile. Could you try building the 1.2 branch, running `make check`, and
let me know if there are any hiccups?

On 07/03/2013 11:19 AM, Nigel Stewart wrote:
> Thank Jeff,
>
> I experimented some more with the XCode GUI (which I tend to avoid)
> and it appears that clang is fine, while gcc is not.  That presents a
> bit of a portability issue for me (clang is SLOW!), I'll need to
> consider the implications.
>
> - Nigel
>
> On Wed, Jul 3, 2013 at 1:06 PM, Jeff Bland <jksb at linux.com> wrote:
>> Surprised it loaded in Xcode 3.1 since the project format is 3.2-compatable.
>>
>> Apparently the GCC 4.2 that shipped with Xcode doesn't support thread local
>> storage on x86_64. You could try deleting the __thread bit on that line as a
>> temporary workaround, but it should work in a recent Xcode w/ clang. When
>> you tried the current Xcode, did you use clang, and did you get a similar
>> error?
>>
>> I noticed an unrelated link error as well, the Xcode project is missing
>> src/waffle/core/wcore_attrib_list.c, I'll send in a patch for that.
>>
>> On Wed, Jul 3, 2013 at 11:27 AM, Nigel Stewart <nigels.com at gmail.com> wrote:
>>>
>>> Hi all,
>>>
>>> I came across something a bit mysterious on the Mac just now.
>>> Using cmake and gcc from MacPorts, Waffle builds just fine.
>>> However, building with XCode gcc...
>>>
>>> src/waffle/src/core/wcore_tinfo.c
>>> src/waffle/src/core/wcore_tinfo.c:56: error: thread-local storage not
>>> supported for this target
>>> src/waffle/src/core/wcore_tinfo.c:56: warning: ‘tls_model’ attribute
>>> ignored
>>>
>>> The complete command-line is:
>>>
>>> ccache  /XCode3.1.4/usr/bin/gcc-4.2 --std=c99 -no-cpp-precomp -dynamic
>>> -Wall -fvisibility=hidden -arch x86_64 -mmacosx-version-min=10.5
>>> -isysroot /XCode3.1.4/SDKs/MacOSX10.5.sdk    -I. -Isrc/waffle/include
>>> -Isrc/waffle/src/core -Isrc/waffle/src/api -Isrc/waffle/src/glx
>>> -Isrc/waffle/src/x11 -Isrc/waffle/src/linux -Isrc/waffle/src/egl  -g3
>>> -DDEBUG          -DWAFFLE_HAS_CGL -DWAFFLE_HAS_TLS_MODEL_INITIAL_EXEC
>>> -DFIXED_BYTE_ORDER      -DFIXED_BYTE_ORDER   -o
>>>
>>> ../nstewart-lion/sw/../../regal/built/wafflelib_Darwin_leopard_x86_64_debug/wcore_tinfo.o
>>> -c src/waffle/src/core/wcore_tinfo.c
>>> src/waffle/src/core/wcore_tinfo.c:56: error: thread-local storage not
>>> supported for this target
>>> src/waffle/src/core/wcore_tinfo.c:56: warning: ‘tls_model’ attribute
>>> ignored
>>>
>>> Using the current XCode doesn't seem to help either.
>>> Anyone else come across this?
>>>
>>> - Nigel
>>> _______________________________________________
>>> waffle mailing list
>>> waffle at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/waffle
>>
>>
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