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
>
>
> ------------------------------------------------------------------------
>
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>
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