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+################################################################################
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+#
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+# Copyright 2015 Realm Inc.
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+#
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+# Licensed under the Apache License, Version 2.0 (the "License");
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+# you may not use this file except in compliance with the License.
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+# You may obtain a copy of the License at
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+#
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+# http://www.apache.org/licenses/LICENSE-2.0
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+#
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+# Unless required by applicable law or agreed to in writing, software
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+# distributed under the License is distributed on an "AS IS" BASIS,
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+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+# See the License for the specific language governing permissions and
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+# limitations under the License.
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+#
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+################################################################################
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+
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+# This script strips all non-valid architectures from dynamic libraries in
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+# the application's `Frameworks` directory.
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+#
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+# The following environment variables are required:
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+#
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+# BUILT_PRODUCTS_DIR
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+# FRAMEWORKS_FOLDER_PATH
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+# VALID_ARCHS
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+# EXPANDED_CODE_SIGN_IDENTITY
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+
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+
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+# Signs a framework with the provided identity
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+code_sign() {
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+ # Use the current code_sign_identitiy
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+ echo "Code Signing $1 with Identity ${EXPANDED_CODE_SIGN_IDENTITY_NAME}"
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+ echo "/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} --preserve-metadata=identifier,entitlements $1"
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+ /usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} --preserve-metadata=identifier,entitlements "$1"
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+}
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+
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+# Set working directory to product’s embedded frameworks
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+cd "${BUILT_PRODUCTS_DIR}/${FRAMEWORKS_FOLDER_PATH}"
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+
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+if [ "$ACTION" = "install" ]; then
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+ echo "Copy .bcsymbolmap files to .xcarchive"
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+ find . -name '*.bcsymbolmap' -type f -exec mv {} "${CONFIGURATION_BUILD_DIR}" \;
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+else
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+ # Delete *.bcsymbolmap files from framework bundle unless archiving
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+ find . -name '*.bcsymbolmap' -type f -exec rm -rf "{}" +\;
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+fi
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+
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+echo "Stripping frameworks"
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+
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+for file in $(find . -type f -perm +111); do
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+ # Skip non-dynamic libraries
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+ if ! [[ "$(file "$file")" == *"dynamically linked shared library"* ]]; then
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+ continue
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+ fi
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+ # Get architectures for current file
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+ archs="$(lipo -info "${file}" | rev | cut -d ':' -f1 | rev)"
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+ stripped=""
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+ for arch in $archs; do
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+ if ! [[ "${VALID_ARCHS}" == *"$arch"* ]]; then
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+ # Strip non-valid architectures in-place
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+ lipo -remove "$arch" -output "$file" "$file" || exit 1
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+ stripped="$stripped $arch"
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+ fi
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+ done
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+ if [[ "$stripped" != "" ]]; then
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+ echo "Stripped $file of architectures:$stripped"
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+ if [ "${CODE_SIGNING_REQUIRED}" == "YES" ]; then
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+ code_sign "${file}"
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+ fi
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+ fi
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+done
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Adam Pritchard