diff --git a/DcCore/DcCore.xcodeproj/project.pbxproj b/DcCore/DcCore.xcodeproj/project.pbxproj
index ddd3fa174..58a39061f 100644
--- a/DcCore/DcCore.xcodeproj/project.pbxproj
+++ b/DcCore/DcCore.xcodeproj/project.pbxproj
@@ -284,7 +284,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "export PATH=\"/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin\"\nexport PATH=\"$HOME/.cargo/bin:$PATH\"\n\nFILENAME=\"libdeltachat.a\"\nDIR=\"../deltachat-ios/libraries\"\n\n# Delete old build, if any.\nrm -f \"${DIR}/${FILENAME}\"\n\nrustc `cat ../rust-toolchain` --version\n\n# ensure all targets are installed\nrustup target add aarch64-apple-ios x86_64-apple-ios --toolchain `cat ../rust-toolchain`\n\n# --xcode-integ determines --release and --targets from Xcode's env vars.\n# Depending your setup, specify the rustup toolchain explicitly.\nRUSTFLAGS=\"-C lto=on -C embed-bitcode=yes\" \\\n  cargo +`cat ../rust-toolchain` lipo --xcode-integ --manifest-path \"$DIR/deltachat-core-rust/deltachat-ffi/Cargo.toml\" --features jsonrpc\n\n# cargo-lipo drops result in different folder, depending on the config.\nif [[ $CONFIGURATION = \"Debug\" ]]; then\n  SOURCE=\"$DIR/deltachat-core-rust/target/universal/debug/${FILENAME}\"\nelse\n  SOURCE=\"$DIR/deltachat-core-rust/target/universal/release/${FILENAME}\"\nfi\n\n# Copy compiled library to DIR.\nif [ -e \"${SOURCE}\" ]; then\n  cp -a \"${SOURCE}\" $DIR\nfi\n";
+			shellScript = "../scripts/build-core.sh\n";
 		};
 /* End PBXShellScriptBuildPhase section */
 
diff --git a/scripts/build-core.sh b/scripts/build-core.sh
new file mode 100755
index 000000000..68c2f7d26
--- /dev/null
+++ b/scripts/build-core.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+export PATH="/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
+export PATH="$HOME/.cargo/bin:$PATH"
+
+FILENAME="libdeltachat.a"
+DIR="../deltachat-ios/libraries"
+
+# Delete old build, if any.
+rm -f "${DIR}/${FILENAME}"
+
+rustc `cat ../rust-toolchain` --version
+
+# ensure all targets are installed
+rustup target add aarch64-apple-ios x86_64-apple-ios --toolchain `cat ../rust-toolchain`
+
+# --xcode-integ determines --release and --targets from Xcode's env vars.
+# Depending your setup, specify the rustup toolchain explicitly.
+#
+# --no-sanitize-env prevents removal of IPHONEOS_DEPLOYMENT_TARGET variable.
+RUSTFLAGS="-C lto=on -C embed-bitcode=yes" \
+  cargo +`cat ../rust-toolchain` lipo --xcode-integ --no-sanitize-env --manifest-path "$DIR/deltachat-core-rust/deltachat-ffi/Cargo.toml" --features jsonrpc
+
+# cargo-lipo drops result in different folder, depending on the config.
+if [[ $CONFIGURATION = "Debug" ]]; then
+  SOURCE="$DIR/deltachat-core-rust/target/universal/debug/${FILENAME}"
+else
+  SOURCE="$DIR/deltachat-core-rust/target/universal/release/${FILENAME}"
+fi
+
+# Copy compiled library to DIR.
+if [ -e "${SOURCE}" ]; then
+  cp -a "${SOURCE}" $DIR
+fi