[Interest] iOS libpng conflicts with another lib
maitai
maitai at virtual-winds.org
Wed Feb 7 14:24:51 CET 2018
Yes I know, but if I use jpeg2000 i will have another conflict for sure
since I do use jpeg2000 lib (and jasper) to decode gribs in my app. I
agree Webp is another possibility, since it is also supported by gdal, I
might gice it a try, thanks.
Le 07-02-2018 13:56, Konstantin Tokarev a écrit :
> 07.02.2018, 15:46, "maitai" <maitai at virtual-winds.org>:
>> Thanks Konstantin for the good advices, I'll keep that in mind if
>> finally I decide to give it a try. For the time being I managed to
>> cheat
>> by using a tif instead of a png, just for iOS.
>
> That's not the best format. Try jpeg2k or webp instead (plugins "webp"
> and "macjp2" in qtimageformats module)
>
>>
>> Thanks again
>> Philippe.
>>
>> Le 07-02-2018 13:12, Konstantin Tokarev a écrit :
>>> 07.02.2018, 09:44, "maitai" <maitai at virtual-winds.org>:
>>>> Thanks you for your replies
>>>>
>>>> I will decide to compile qt on iOS when I will be retired and
>>>> nothing
>>>> else to do, too much a pain with lipo and all ;)
>>>
>>> lipo is not hard to use at all, however there should be no need to
>>> use
>>> it when building Qt.
>>>
>>> Fo example, configure line [1] initiates build for 4 architectures
>>> (-arch armv7 -arch arm64 -arch i386 -arch x86_64)
>>>
>>> See build log [2] for example (this is build configuration used for
>>> official
>>> iOS packages).
>>>
>>> All you need to change is to add -I and -L options to configure to
>>> specify
>>> location of libpng headers and library. Make sure that configure
>>> summary
>>> states "Using system libpng .... yes".
>>>
>>> [1] configure -xplatform macx-ios-clang -no-sql-mysql -no-sql-psql
>>> -plugin-sql-sqlite -opensource -confirm-license -nomake tests
>>> -verbose
>>> -prefix /Users/qt/work/install -debug-and-release -static -no-icu
>>> -nomake examples
>>>
>>> [2]
>>> https://testresults.qt.io/coin/api/results/qt/qtbase/1860a91eeb370b10677cb1813752739361011015/MacOSMacOS_10_12x86_64IOSIOS_ANYmultiClangqtci-macos-10.12-x86_64-8-9dffb3DebugAndRelease_DisableTests_Static/2a48a3b7dcb9652b1532a3ad14de7580b5b9b1ee/build_1517672826/log.txt.gz
>>
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