Merge pull request #1045 from norio-nomura/change-rsync-option-on-Install

Author: swift-ci

build.py

@@ -523,7 +523,7 @@
     cp "${BUILD_DIR}/Foundation/Foundation.swiftmodule" "${DSTROOT}/${PREFIX}/lib/swift/${OS}/${ARCH}/"; $
     cp "${BUILD_DIR}/Foundation/Foundation.swiftdoc" "${DSTROOT}/${PREFIX}/lib/swift/${OS}/${ARCH}/"; $
     mkdir -p "${DSTROOT}/${PREFIX}/local/include"; $
-    rsync -r "${BUILD_DIR}/Foundation/${PREFIX}/lib/swift/CoreFoundation" "${DSTROOT}/${PREFIX}/lib/swift/"
+    rsync -a "${BUILD_DIR}/Foundation/${PREFIX}/lib/swift/CoreFoundation" "${DSTROOT}/${PREFIX}/lib/swift/"
 
 build ${BUILD_DIR}/.install: InstallFoundation ${BUILD_DIR}/Foundation/${DYLIB_PREFIX}Foundation${DYLIB_SUFFIX}