Can you give me a bit more specifics? Do you have a reduced test case that you
can show me of the problems you are having? Have you opened a bug report on
llvm's bugzilla? Have you filed a radar with Apple's bug tracker?
On Feb 15, 2012, at 3:13 PM, cu <cairou...@yahoo.com> wrote:
> - The assembler code is not mine. It's a standard assembler set of
> optimized instructions for NEON (arm v7 etc) that is included with pixman
>
> - It will not build on iOS because configure script is unable to test
> NEON intrinsics (as they are not supported by iOS asm compiler)
>
> - So far, the only (somewhat) workable approach was to compile the
> assembler code on Linux, then disassemble into basic instruction set
> (i.e. not using any macros etc), and then use that "raw assembler" to
> compile for iOS. Doing so still requires somehow working around
> configure script (i.e. editing it to forcibly enable ARM NEON
> optimizations). It's a manual process and clearly not particularly
> convenient, or maintainable.
>
>
>
> Jeremy Huddleston wrote:
>> I haven't tested anything or even looked at your assembly. I just fixed it
>> such that it would build out of the box. That's not to say that it builds
>> *correct* out of the box, but now it at least builds trivially, and you can
>> look into any other issues.
>>
>> What errors are you getting trying to compile the pixman arm assembly code
>> for iOS?
>>
>> On Feb 15, 2012, at 6:34 AM, cu <cairou...@yahoo.com> wrote:
>>
>>
>>> I think the difficulty refers to the fact that pixman arm assembly code
>>> can't be directly compiled for iOS.
>>>
>>> Does this patch still require the precompiled-disassembled version of
>>> pixman_arm_neon.S?
>>>
>>>
>>> Jeremy Huddleston wrote:
>>>
>>>> I noticed this message in the release notes for 0.24.4:
>>>> """
>>>> This release also contains some basic support for using the NEON
>>>> acceleration on iOS, although actually building pixman on that platform
>>>> remains difficult.
>>>> """
>>>>
>>>> I was curious about what was so difficult about building pixman for iOS
>>>> and decided to lend a hand. Attached are 2 patches for review and build
>>>> instructions for how I got it to build.
>>>>
>>>> The script will build pixman master for iOS (after the 2 patches are
>>>> applied). The patches fix TLS detection and add support for
>>>> --disable-libpng (because I didn't feel like building libpng, too, and
>>>> pkg-config picked up my host libpng).
>>>>
>>>> Everything built just fine. I haven't tested it, but this should make it
>>>> easier for people to use in iOS if they want. You'll need to adjust the
>>>> path to the SDK and the minimum version of iOS that you want to support as
>>>> appropriate.
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>>
>>>> SDK="/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk"
>>>> export CC=$(xcrun -sdk iphoneos -find clang)
>>>> export AS=$(xcrun -sdk iphoneos -find as)
>>>> export CPPFLAGS="-isysroot ${SDK}"
>>>> export CFLAGS="-g3 -gdwarf-2 -Os -pipe -miphoneos-version-min=5.0 -arch
>>>> armv6 -arch armv7"
>>>> export LDFLAGS="-isysroot ${SDK} -miphoneos-version-min=5.0 -arch armv6
>>>> -arch armv7"
>>>> ./configure --host=arm-apple-darwin
>>>> make
>>>>
>>>> --Jeremy
>>>>
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>> _______________________________________________
>>>> Pixman mailing list
>>>> Pixman@lists.freedesktop.org
>>>> http://lists.freedesktop.org/mailman/listinfo/pixman
>>>>
>>>>
>>
>> _______________________________________________
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>> Pixman@lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/pixman
>>
>
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