Having problems with .framework on Xcode12.X ? Make a nice XCFramework from your old universal .framework to solve it. (To fully support arm64 simulators, framework providers have to provide a legit xcframework, M1 users, we shall use rosetta for now)

xcframeworkizer.sh

### CREATED BY NICOLAS FONTAINE ON 18/03/2021 ###

#!/bin/sh
set -o errexit

finish()
{
    rm -rf iphoneos
    rm -rf iphonesimulator
}
trap finish EXIT

while test $# -gt 0; do
  case "$1" in
    -h|--help)
      echo "options:"
      echo "-h, --help                show brief help"
      echo "-i, --input=INPUT_PATH       specify an input framework to transform"
      echo "-o, --output=OUTPUT_DIR      specify a directory to store output in"
      exit 0
      ;;
    -i)
      shift
      if test $# -gt 0; then
        export INPUT_PATH=$1
      else
        echo "no input specified, use -i <your_framework_path>"
        exit 1
      fi
      shift
      ;;
    --input*)
      export INPUT_PATH=`echo $1 | sed -e 's/^[^=]*=//g'`
      shift
      ;;
    -o)
      shift
      if test $# -gt 0; then
        export OUTPUT_DIR=$1
      else
        echo "no output dir specified, use -o <path_to_output_dir>"
        exit 1
      fi
      shift
      ;;
    --output*)
      export OUTPUT_DIR=`echo $1 | sed -e 's/^[^=]*=//g'`
      shift
      ;;
    *)
      break
      ;;
  esac
done

if [ -z "$INPUT_PATH" ]; then
echo "no input given, use -i <your_framework_path>"
exit 1
elif [ -z "$OUTPUT_DIR" ]; then
echo "no output given, use -o <path_to_output_dir>"
exit 1
fi


rm -rf iphoneos
rm -rf iphonesimulator

mkdir -p iphoneos
mkdir -p iphonesimulator

FRAMEWORK_NAME="$(basename $INPUT_PATH .framework)"
FRAMEWORK_FILE="$(basename $INPUT_PATH)"

echo "Transforming $FRAMEWORK_NAME to xcframework, please wait...\n"

SOURCE_ARCHITECTURES_RAW="$(lipo -info $INPUT_PATH/$FRAMEWORK_NAME)"
SOURCE_ARCHITECTURES=${SOURCE_ARCHITECTURES_RAW##*:}
echo "SOURCE CONTAINS ARCHITECTURES : $SOURCE_ARCHITECTURES\n"
IFS=' ' read -r -a ARCHITECTURES <<< "$SOURCE_ARCHITECTURES"

# Copy framework into the platform specific directories
cp -R $INPUT_PATH iphoneos/$FRAMEWORK_FILE
cp -R $INPUT_PATH iphonesimulator/$FRAMEWORK_FILE

### LOOPING TO REMOVE UNWANTED ARCHITECTURES FOR IPHONEOS
for ARCH in "${ARCHITECTURES[@]}"; do
    if [ $ARCH != "arm64" ] && [ $ARCH != "armv7" ]; then
        echo "Removing $ARCH for iphoneos framework"
        xcrun lipo -remove $ARCH ./iphoneos/$FRAMEWORK_FILE/$FRAMEWORK_NAME -o ./iphoneos/$FRAMEWORK_FILE/$FRAMEWORK_NAME
    fi
done

### LOOPING TO REMOVE UNWANTED ARCHITECTURES FOR IPHONE SIMULATOR
for ARCH in "${ARCHITECTURES[@]}"; do
    if [ $ARCH != "x86_64" ] && [ $ARCH != "i386" ]; then
        echo "Removing $ARCH for iphonesimulator framework"
        xcrun lipo -remove $ARCH ./iphonesimulator/$FRAMEWORK_FILE/$FRAMEWORK_NAME -o ./iphonesimulator/$FRAMEWORK_FILE/$FRAMEWORK_NAME
    fi
done

### EDITING INFO.PLIST OF OUTPUT 
/usr/libexec/PlistBuddy -c "Set DTPlatformName iphoneOS" ./iphoneos/$FRAMEWORK_FILE/Info.plist
/usr/libexec/PlistBuddy -c "Set :CFBundleSupportedPlatforms:0 iphoneOS" ./iphoneos/$FRAMEWORK_FILE/Info.plist
/usr/libexec/PlistBuddy -c "Set DTPlatformName iphonesimulator" ./iphonesimulator/$FRAMEWORK_FILE/Info.plist
/usr/libexec/PlistBuddy -c "Set :CFBundleSupportedPlatforms:0 iphoneSimulator" ./iphonesimulator/$FRAMEWORK_FILE/Info.plist

echo "\nMerging to xcframework at $OUTPUT_DIR"
rm -rf $OUTPUT_DIR/$FRAMEWORK_NAME.xcframework

xcodebuild -create-xcframework \
-framework ./iphoneos/$FRAMEWORK_FILE \
-framework ./iphonesimulator/$FRAMEWORK_FILE/ \
-output $OUTPUT_DIR/$FRAMEWORK_NAME.xcframework

echo "--------- ALL DONE ---------"