I just tried the 3-14 snapshot with -enable-batch-mode
set and ran into an error early on building a 3rd-party lib. At PlanGrid, we use this library here: GitHub - mikaoj/BSGridCollectionViewLayout: A simple grid collection view layout, which failed to build. Here's the error output:
Ld /Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid- gqlncmhpixhqencipfdoevzawlxo/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/BSGridCollectionViewLayout.build/Objects-normal/armv7/BSGridCollectionViewLayout normal armv7
cd /Users/basher/Code/plangrid/Pods
export IPHONEOS_DEPLOYMENT_TARGET=9.0
/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch armv7 -dynamiclib -isysroot /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.3.sdk -L/Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid-gqlncmhpixhqencipfdoevzawlxo/Build/Products/Debug-iphoneos/BSGridCollectionViewLayout -F/Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid-gqlncmhpixhqencipfdoevzawlxo/Build/Products/Debug-iphoneos/BSGridCollectionViewLayout -filelist /Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid-gqlncmhpixhqencipfdoevzawlxo/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/BSGridCollectionViewLayout.build/Objects-normal/armv7/BSGridCollectionViewLayout.LinkFileList -install_name @rpath/BSGridCollectionViewLayout.framework/BSGridCollectionViewLayout -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -miphoneos-version-min=9.0 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid-gqlncmhpixhqencipfdoevzawlxo/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/BSGridCollectionViewLayout.build/Objects-normal/armv7/BSGridCollectionViewLayout_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -fembed-bitcode-marker -fobjc-arc -fobjc-link-runtime -L/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos -Xlinker -add_ast_path -Xlinker /Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid-gqlncmhpixhqencipfdoevzawlxo/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/BSGridCollectionViewLayout.build/Objects-normal/armv7/BSGridCollectionViewLayout.swiftmodule -framework Foundation -compatibility_version 1 -current_version 1 -Xlinker -dependency_info -Xlinker /Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid-gqlncmhpixhqencipfdoevzawlxo/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/BSGridCollectionViewLayout.build/Objects-normal/armv7/BSGridCollectionViewLayout_dependency_info.dat -o /Users/basher/Library/Developer/Xcode/DerivedData/PlanGrid-gqlncmhpixhqencipfdoevzawlxo/Build/Intermediates.noindex/Pods.build/Debug-iphoneos/BSGridCollectionViewLayout.build/Objects-normal/armv7/BSGridCollectionViewLayout
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftSwiftOnoneSupport.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftCore.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftQuartzCore.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftCoreImage.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftCoreGraphics.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftDispatch.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftObjectiveC.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftCoreFoundation.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftUIKit.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftDarwin.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftMetal.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
ld: warning: Auto-Linking '/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2018-03-14-a.xctoolchain/usr/lib/swift/iphoneos/libswiftFoundation.dylib' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
Undefined symbols for architecture armv7:
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_$S26BSGridCollectionViewLayout04GridbcD0C16indexPathsInRectySay10Foundation9IndexPathVGSo6CGRectVF in GridCollectionViewLayout.o
_$Ss5RangeVySiGMa in GridCollectionViewLayout.o
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"_$SBOWV", referenced from:
_$S26BSGridCollectionViewLayout04GridbcD0CMf in GridCollectionViewLayout.o
"__swift_FORCE_LOAD_$_swiftCoreGraphics", referenced from:
__swift_FORCE_LOAD_$_swiftCoreGraphics_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftCoreGraphics_$_BSGridCollectionViewLayout)
"__swift_FORCE_LOAD_$_swiftCoreImage", referenced from:
__swift_FORCE_LOAD_$_swiftCoreImage_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftCoreImage_$_BSGridCollectionViewLayout)
"__swift_FORCE_LOAD_$_swiftDispatch", referenced from:
__swift_FORCE_LOAD_$_swiftDispatch_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftDispatch_$_BSGridCollectionViewLayout)
"_$SSis10StrideablesWP", referenced from:
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"__swift_FORCE_LOAD_$_swiftCoreFoundation", referenced from:
__swift_FORCE_LOAD_$_swiftCoreFoundation_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftCoreFoundation_$_BSGridCollectionViewLayout)
"_swift_getForeignTypeMetadata", referenced from:
_$SSo6CGSizeVMa in GridCollectionViewLayout.o
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"_$Ss11ClosedRangeVyxGs10Collectionss10StrideableRzs13SignedInteger6StrideRpzrlWa", referenced from:
_$Ss11ClosedRangeVySiGAByxGs10Collectionss10StrideableRzs13SignedInteger6StrideRpzrlWl in GridCollectionViewLayout.o
"_$SSayxGs8SequencesWa", referenced from:
_$SSaySo32UICollectionViewLayoutAttributesCSgGSayxGs8SequencesWl in GridCollectionViewLayout.o
"__swift_FORCE_LOAD_$_swiftFoundation", referenced from:
__swift_FORCE_LOAD_$_swiftFoundation_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftFoundation_$_BSGridCollectionViewLayout)
"_swift_getInitializedObjCClass", referenced from:
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_$SSaySo32UICollectionViewLayoutAttributesCSgGMa in GridCollectionViewLayout.o
"__swift_FORCE_LOAD_$_swiftMetal", referenced from:
__swift_FORCE_LOAD_$_swiftMetal_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftMetal_$_BSGridCollectionViewLayout)
"_$S10ObjectiveC22_convertBoolToObjCBoolyAA0eF0VSbF", referenced from:
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"__swift_FORCE_LOAD_$_swiftUIKit", referenced from:
__swift_FORCE_LOAD_$_swiftUIKit_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftUIKit_$_BSGridCollectionViewLayout)
"_$S10Foundation9IndexPathV36_unconditionallyBridgeFromObjectiveCyACSo07NSIndexC0CSgFZ", referenced from:
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"_swift_deallocObject", referenced from:
l_objectdestroy in GridCollectionViewLayout.o
l_objectdestroy.2 in GridCollectionViewLayout.o
l_objectdestroy.5 in GridCollectionViewLayout.o
l_objectdestroy.8 in GridCollectionViewLayout.o
l_objectdestroy.11 in GridCollectionViewLayout.o
l_objectdestroy.14 in GridCollectionViewLayout.o
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...
"_$S10Foundation9IndexPathV19_bridgeToObjectiveCSo07NSIndexC0CyF", referenced from:
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"_swift_getObjCClassMetadata", referenced from:
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__swift_FORCE_LOAD_$_swiftQuartzCore_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftQuartzCore_$_BSGridCollectionViewLayout)
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...
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"_swift_endAccess", referenced from:
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...
"__swift_FORCE_LOAD_$_swiftObjectiveC", referenced from:
__swift_FORCE_LOAD_$_swiftObjectiveC_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftObjectiveC_$_BSGridCollectionViewLayout)
"_swift_allocObject", referenced from:
_$S26BSGridCollectionViewLayout04GridbcD0C22estimatedNumberOfItemsSiyF in GridCollectionViewLayout.o
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"__swift_FORCE_LOAD_$_swiftDarwin", referenced from:
__swift_FORCE_LOAD_$_swiftDarwin_$_BSGridCollectionViewLayout in GridCollectionViewLayout.o
(maybe you meant: __swift_FORCE_LOAD_$_swiftDarwin_$_BSGridCollectionViewLayout)
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_$S26BSGridCollectionViewLayout04GridbcD0C11itemsPerRowSivW in GridCollectionViewLayout.o
...
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
The only difference between the build command we normally use and this was are these added args (using Xcode 9.3b4): -toolchain org.swift.3020180314a OTHER_SWIFT_FLAGS='$(inherited) -enable-batch-mode'
(and disabled warnings as errors). Let me know if I'm missing something, and I'm looking forward to helping test here!