Xcode 13 and 12 Carthage Build Workaround

carthage-xc12.sh

#!/bin/bash -e

echo "🤡 Applying carthage 12 and 13 workaround 🤡"

xcconfig=$(mktemp /tmp/static.xcconfig.XXXXXX)
# For Xcode 12 make sure EXCLUDED_ARCHS is set to arm architectures otherwise
# the build will fail on lipo due to duplicate architectures.
CURRENT_XCODE_VERSION=$(xcodebuild -version | grep "Build version" | cut -d' ' -f3)
echo 'EXCLUDED_ARCHS__EFFECTIVE_PLATFORM_SUFFIX_simulator__NATIVE_ARCH_64_BIT_x86_64__XCODE_1200 = arm64 arm64e armv7 armv7s armv6 armv8' > $xcconfig
echo "EXCLUDED_ARCHS__EFFECTIVE_PLATFORM_SUFFIX_simulator__NATIVE_ARCH_64_BIT_x86_64__XCODE_1200__BUILD_$CURRENT_XCODE_VERSION = arm64 arm64e armv7 armv7s armv6 armv8" >> $xcconfig
echo 'EXCLUDED_ARCHS__EFFECTIVE_PLATFORM_SUFFIX_simulator__NATIVE_ARCH_64_BIT_x86_64__XCODE_1300 = arm64 arm64e armv7 armv7s armv6 armv8' >> $xcconfig
echo "EXCLUDED_ARCHS__EFFECTIVE_PLATFORM_SUFFIX_simulator__NATIVE_ARCH_64_BIT_x86_64__XCODE_1300__BUILD_$CURRENT_XCODE_VERSION = 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"

carthage "$@"

@funzin well done

Thank you @funzin for the great update to the script.

where to include this script when trying to solve this issue?
#!/bin/sh -e
echo "Carthage wrapper"
echo "Applying Xcode 12 workaround..."
xcconfig="/tmp/xc12-carthage.xcconfig"

Xcode 12.x

echo 'EXCLUDED_ARCHS__EFFECTIVE_PLATFORM_SUFFIX_simulator__NATIVE_ARCH_64_BIT_x86_64__XCODE_1200 = arm64 arm64e armv7 armv7s armv6 armv8' > $xcconfig

General stuff

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
echo 'ONLY_ACTIVE_ARCH=NO' >> $xcconfig
echo 'VALID_ARCHS = $(inherited) x86_64' >> $xcconfig
export XCODE_XCCONFIG_FILE="$xcconfig"
echo "Workaround applied. xcconfig here: $XCODE_XCCONFIG_FILE"

carthage $@