http://stackoverflow.com/questions/19520683/how-can-i-address-errors-in-my-ios-project-which-i-hope-to-submit-to-app-store
ProcessPCH /Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/PrecompiledHeaders/Steampunk\ Clock-Prefix-gxthjnzoqzlexccyjihvntdifuwt/Steampunk\ Clock-Prefix.pch.pch Steampunk\ Clock/Steampunk\ Clock-Prefix.pch normal arm64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
cd "/Users/jonathan/Desktop/Steampunk Clock"
setenv LANG en_US.US-ASCII
setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -x objective-c-header -arch arm64 -fmessage-length=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit=0 -std=gnu99 -fobjc-arc -fmodules -fmodules-cache-path=/Users/jonathan/Library/Developer/Xcode/DerivedData/ModuleCache -Wno-trigraphs -fpascal-strings -Os -Wno-missing-field-initializers -Wno-missing-prototypes -Werror=return-type -Wno-implicit-atomic-properties -Werror=deprecated-objc-isa-usage -Werror=objc-root-class -Wno-receiver-is-weak -Wno-arc-repeated-use-of-weak -Wduplicate-method-match -Wno-missing-braces -Wparentheses -Wswitch -Wunused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wempty-body -Wuninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion -Wbool-conversion -Wenum-conversion -Wshorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-selector -Wno-strict-selector-match -Wundeclared-selector -Wno-deprecated-implementations -DNS_BLOCK_ASSERTIONS=1 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk -fstrict-aliasing -Wprotocol -Wdeprecated-declarations -g -fvisibility=hidden -Wno-sign-conversion -miphoneos-version-min=5.0 -iquote /Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/IntermediateBuildFilesPath/Steampunk\ Clock.build/Release-iphoneos/Steampunk\ Clock.build/Ancient\ Steampunk\ Clock-generated-files.hmap -I/Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/IntermediateBuildFilesPath/Steampunk\ Clock.build/Release-iphoneos/Steampunk\ Clock.build/Ancient\ Steampunk\ Clock-own-target-headers.hmap -I/Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/IntermediateBuildFilesPath/Steampunk\ Clock.build/Release-iphoneos/Steampunk\ Clock.build/Ancient\ Steampunk\ Clock-all-target-headers.hmap -iquote /Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/IntermediateBuildFilesPath/Steampunk\ Clock.build/Release-iphoneos/Steampunk\ Clock.build/Ancient\ Steampunk\ Clock-project-headers.hmap -I/Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/BuildProductsPath/Release-iphoneos/include -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include -I/Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/IntermediateBuildFilesPath/Steampunk\ Clock.build/Release-iphoneos/Steampunk\ Clock.build/DerivedSources/arm64 -I/Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/IntermediateBuildFilesPath/Steampunk\ Clock.build/Release-iphoneos/Steampunk\ Clock.build/DerivedSources -F/Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/BuildProductsPath/Release-iphoneos --serialize-diagnostics /Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/PrecompiledHeaders/Steampunk\ Clock-Prefix-gxthjnzoqzlexccyjihvntdifuwt/Steampunk\ Clock-Prefix.pch.dia -MMD -MT dependencies -MF /Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/PrecompiledHeaders/Steampunk\ Clock-Prefix-gxthjnzoqzlexccyjihvntdifuwt/Steampunk\ Clock-Prefix.pch.d -c /Users/jonathan/Desktop/Steampunk\ Clock/Steampunk\ Clock/Steampunk\ Clock-Prefix.pch -o /Users/jonathan/Library/Developer/Xcode/DerivedData/Steampunk_Clock-cblavmmgjxgqzpfwzbpirbdjpspm/Build/Intermediates/ArchiveIntermediates/Steampunk\ Clock/PrecompiledHeaders/Steampunk\ Clock-Prefix-gxthjnzoqzlexccyjihvntdifuwt/Steampunk\ Clock-Prefix.pch.pch
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
1 error generated.
/Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:7:9: fatal error: could not build module 'Darwin'
#import
~~~~~~~^
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
In file included from :1:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:8:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKitDefines.h:8:9: fatal error: could not build module 'Darwin'
#import
~~~~~~~^
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAccelerometer.h:8:
While building module 'CoreFoundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:6:
In file included from :1:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CoreFoundation.h:11:10: fatal error: could not build module 'Darwin'
#include
~~~~~~~~^
2 errors generated.
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:6:10: fatal error: could not build module 'CoreFoundation'
#include
~~~~~~~~^
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAccelerometer.h:8:
While building module 'ObjectiveC' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:6:
In file included from :1:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/usr/include/objc/message.h:28:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/usr/include/objc/objc.h:31:10: fatal error: could not build module 'Darwin'
#include // for __DARWIN_NULL
~~~~~~~~^
2 errors generated.
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'Foundation' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAccelerometer.h:8:
While building module 'Security' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLCredential.h:9:
In file included from :1:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/Security.framework/Headers/Security.h:24:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/Security.framework/Headers/SecBase.h:32:10: fatal error: could not build module 'Darwin'
#include
~~~~~~~~^
2 errors generated.
8 errors generated.
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'CoreGraphics' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIAccessibility.h:8:
In file included from :1:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CoreGraphics.h:8:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGBase.h:159:11: fatal error: could not build module 'Darwin'
# include
~~~~~~~~^
2 errors generated.
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'CoreImage' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIColor.h:10:
In file included from :1:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/CoreImage.framework/Headers/CoreImage.h:8:9: fatal error: could not build module 'Foundation'
#import
~~~~~~~^
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/CoreVideo.framework/Headers/CoreVideo.h:16:10: fatal error: could not build module 'Darwin'
#include
~~~~~~~~^
2 errors generated.
4 errors generated.
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'CoreText' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSText.h:9:
In file included from :1:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/CoreText.framework/Headers/CoreText.h:20:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/CoreText.framework/Headers/CTDefines.h:29:11: fatal error: could not build module 'Darwin'
# include
~~~~~~~~^
2 errors generated.
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'QuartzCore' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UICollectionViewLayout.h:11:
In file included from :1:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/CAAnimation.h:6:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/CALayer.h:6:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/CAMediaTiming.h:6:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/CABase.h:13:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/5.0/include/stdint.h:33:16: fatal error: could not build module 'Darwin'
# include_next
~~~~~~~~~~~~~^
error: invalid deployment target '5.0.0' for architecture 'arm64' (requires '7.0.0' or later)
While building module 'UIKit' imported from /Users/jonathan/Desktop/Steampunk Clock/Steampunk Clock/Steampunk Clock-Prefix.pch:14:
While building module 'QuartzCore' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UICollectionViewLayout.h:11:
While building module 'OpenGLES' imported from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/CAEAGLLayer.h:7:
In file included from :1:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/OpenGLES.framework/Headers/EAGL.h:8:10: fatal error: could not build module 'Foundation'
#include
~~~~~~~~^
2 errors generated.
4 errors generated.
22 errors generated.
25 errors generated.
The answer can be found by a close reading of the error. It appears to indicate that arm64 is not supported for your app which is targeting 5.0.0. If this answer satisfy's your use-case please don't forget to accept the answer so that other users will locate the solution.
High-level concepts
Arm64 was just introduced to support iOS7 so it did not exist on iOS5 devices. Something to keep in mind is that iOS5 devices will not support any of the iOS7 specific features.
Low-level detail
Specific to the error you are seeing:
Note the definition of the Valid Architecture settings:
A space-separated list of architectures for which the target should actually be built. For each target, this list is intersected with the list specified in 'Architectures', and the resulting set is built. This allows individual targets to “opt out” of building for particular architectures. If the resulting set of architectures is empty, no executable will be produced. [VALID_ARCHS]
You can change the architecture of the device you are targeting by removing the arm64 text from your debug/release code. The effect of this is that your app will run in 32 bit mode only on 5s devices. Your current error should disappear when you remove the arm64 setting.
Select your Project > Click on Build Settings > 
Search for 'arch' (no quotes) > 
Double-click into the White Space (Under the Target and Project Column) > Select arm64 > Hit the Minus button on the bottom of the popup box
