iOS Xcode 10 - Build errors with carthage

[VicZhang1]

Hi,

I am trying to reference core-plot via carthage like github "core-plot/core-plot" ~> 2.2, when I run carthage update --platform iOS command, I get below error:

Build Failed
Task failed with exit code 65

Looking at build log, I see:

/Users/VZ/WorkSpace/MyProject/Carthage/Checkouts/core-plot/framework/Source/CPTTradingRangePlot.m:1226:33: error: implicit conversion from nullable pointer 'NSNumber * _Nullable' to non-nullable pointer type 'ObjectType _Nonnull' (aka 'id') [-Werror,-Wnullable-to-nonnull-conversion]
CPTNumberArray *yValues = @[[self cachedNumberForField:CPTTradingRangePlotFieldOpen recordIndex:idx],
^
/Users/VZ/WorkSpace/MyProject/Carthage/Checkouts/core-plot/framework/Source/CPTTradingRangePlot.m:1227:33: error: implicit conversion from nullable pointer 'NSNumber * _Nullable' to non-nullable pointer type 'ObjectType _Nonnull' (aka 'id') [-Werror,-Wnullable-to-nonnull-conversion]
[self cachedNumberForField:CPTTradingRangePlotFieldClose recordIndex:idx],
^
/Users/VZ/WorkSpace/MyProject/Carthage/Checkouts/core-plot/framework/Source/CPTTradingRangePlot.m:1228:33: error: implicit conversion from nullable pointer 'NSNumber * _Nullable' to non-nullable pointer type 'ObjectType _Nonnull' (aka 'id') [-Werror,-Wnullable-to-nonnull-conversion]
[self cachedNumberForField:CPTTradingRangePlotFieldHigh recordIndex:idx],
^
/Users/VZ/WorkSpace/MyProject/Carthage/Checkouts/core-plot/framework/Source/CPTTradingRangePlot.m:1229:33: error: implicit conversion from nullable pointer 'NSNumber * _Nullable' to non-nullable pointer type 'ObjectType _Nonnull' (aka 'id') [-Werror,-Wnullable-to-nonnull-conversion]
[self cachedNumberForField:CPTTradingRangePlotFieldLow recordIndex:idx]];
^
5 warnings and 4 errors generated.

Any ideas for this?

Thanks,

Vic

[eskroch]

Try using the release 2.3 branch. Release 2.2 doesn't work with newer versions of Xcode.

github "core-plot/core-plot" "release-2.3"

[benzado]

I just encountered the same build problem with a Cartfile like

github "core-plot/core-plot"

With no version specified, Carthage fetches 2.2, which I assume is because that's the latest of the Releases on this repository, even though there is a newer 2.3 branch.

Explicitly naming the "release-2.3" branch (as in the previous comment) works; Carthage fetches and builds the framework successfully.