- Carthage build fix

- Carthage rebuild on Swift version change

Author: anton-plebanovich

scripts/bootstrap-if-needed.sh

@@ -1,10 +1,24 @@
 #!/bin/sh
 
+set -e
+
 RED='\033[1;31m'
 GREEN='\033[1;32m'
 NC='\033[0m' # No Color
 
-if ! cmp -s Cartfile.resolved Carthage/Cartfile.resolved; then
+# Get previous checksum
+mkdir -p "Carthage"
+touch "Carthage/cartSum.txt"
+if [ ! -f "Carthage/cartSum.txt" ]; then
+    prevSum="null";
+else
+    prevSum=`cat Carthage/cartSum.txt`;
+fi
+
+# Get checksum
+cartSum=`{ cat Cartfile.resolved; xcrun swift -version; } | md5`
+
+if [ "$prevSum" != "$cartSum" ] || [ ! -d "Carthage/Build/iOS" ]; then
   printf "${RED}Dependencies out of date with cache.${NC} Bootstrapping...\n"
   scripts/bootstrap.sh
 else

scripts/bootstrap.sh

@@ -1,4 +1,25 @@
 #!/bin/sh
 
-carthage bootstrap
-cp Cartfile.resolved Carthage
+set -e
+
+# https://github.com/mapbox/mapbox-navigation-ios/blob/master/scripts/wcarthage.sh
+applyXcode12Workaround() {
+    echo "Applying Xcode 12 workaround..."
+    
+    xcconfig=$(mktemp /tmp/static.xcconfig.XXXXXX)
+    trap 'rm -f "${xcconfig}"' INT TERM HUP EXIT
+    
+    # For Xcode 12 make sure EXCLUDED_ARCHS is set to arm architectures otherwise
+    # the build will fail on lipo due to duplicate architectures.
+    echo 'EXCLUDED_ARCHS__EFFECTIVE_PLATFORM_SUFFIX_simulator__NATIVE_ARCH_64_BIT_x86_64__XCODE_1200 = arm64 arm64e armv7 armv7s armv6 armv8' >> $xcconfig
+    echo 'EXCLUDED_ARCHS = $(inherited) $(EXCLUDED_ARCHS__EFFECTIVE_PLATFORM_SUFFIX_$(EFFECTIVE_PLATFORM_SUFFIX)__NATIVE_ARCH_64_BIT_$(NATIVE_ARCH_64_BIT)__XCODE_$(XCODE_VERSION_MAJOR))' >> $xcconfig
+
+    export XCODE_XCCONFIG_FILE="${xcconfig}"
+    echo "Workaround applied. xcconfig here: ${XCODE_XCCONFIG_FILE}"
+}
+
+applyXcode12Workaround
+carthage bootstrap --cache-builds
+
+cartSum=`{ cat Cartfile.resolved; xcrun swift -version; } | md5`
+echo $cartSum > Carthage/cartSum.txt