xcode travis build cache times out during upload

[Pentarctagon]

More than once([1] [2] [3]), the xcode build on travis has failed to upload its cache due to exceeding the default timeout of 3 minutes. This occurs because the ccache max size limit for xcode is 2 GB, rather than the 200 MB limit set for ccache+cmake, which is necessary in order to get xcode's ccache hit rate to 95%+ consistently, which is because the xcode build by default uses the -g flag. Decreasing the ccache max size to 1.5 GB, for example, results in only a ~75% hit rate even for builds where there has no been code change.

While it is possible to increase the timeout, since there is no actual need for the debugging information on the travis build, I would prefer if the travis xcode job could be set to not use the -g flag. This would then also speed up the xcode job by 1-3 minutes.

[GregoryLundberg]

To me, it's most important that the CI tools ensure we can make Release builds.

I do like having a Debug build, or two, in the mix because that can expose some issues. But the probability of that is low. Also, I imagine we have some developers making their own Debug builds, so they're likely to catch problems as well (I, for one, do that for Linux and Windows, occasionally).

So, I would not object to changing the XCode CI run to Release and omitting debugging information.

[Pentarctagon]

My understanding is that this is actually the Release build, since it also has the -Os optimization level set - xcode just uses -g by default for it as well.

[CelticMinstrel]

Has anyone brought this to the attention of @hrubymar10?

[hrubymar10]

Xcode travis does RELEASE builds

[CelticMinstrel]

I think it's reasonable to use -g for the actual releases (since you get better crash reports), but maybe it can be set to not use -g on Travis? Is that possible?

[hrubymar10]

It's because of this setting:

I can force it by #2714

so we can add to travis' script smt like:

sed -i -e 's/GCC_GENERATE_DEBUGGING_SYMBOLS = YES;/GCC_GENERATE_DEBUGGING_SYMBOLS = NO;/g' projectfiles/Xcode/Wesnoth.xcodeproj/project.pbxproj

If will @Pentarctagon and also others agree then someone can merge #2714 to master and also to 1.14 and then create commit with command above or smt similar

[CelticMinstrel]

If the idea is to disable it on Travis only, I think you could probably do even better than that with (untested) xcodebuild GCC_GENERATE_DEBUGGING_SYMBOLS=NO.

[hrubymar10]

Indeed. Your option works @CelticMinstrel . I'll update my PR