Merge pull request #10607 from deannagarcia/buildZip20

Use local protoc artifacts

protoc-artifacts/build-zip.sh

@@ -10,10 +10,10 @@ Example:
   $ $0 protoc 3.0.0
   $ $0 protoc-gen-javalite 3.0.0
 
-This script will download pre-built protoc or protoc plugin binaries from maven
-repository and create .zip packages suitable to be included in the github
-release page. If the target is protoc, well-known type .proto files will also be
-included. Each invocation will create 8 zip packages:
+This script will create .zip packages suitable to be included in the github
+release page. It requires all protoc executables to be present in the
+protoc-artifacts/ directory. If the target is protoc, well-known type .proto
+files will also be included. Each invocation will create 8 zip packages:
   dist/<TARGET>-<VERSION_NUMBER>-win32.zip
   dist/<TARGET>-<VERSION_NUMBER>-win64.zip
   dist/<TARGET>-<VERSION_NUMBER>-osx-x86_64.zip
@@ -98,12 +98,7 @@ for((i=0;i<${#FILE_NAMES[@]};i+=2));do
     BINARY="$TARGET"
   fi
   BINARY_NAME=${FILE_NAMES[$(($i+1))]}
-  BINARY_URL=https://repo1.maven.org/maven2/com/google/protobuf/$TARGET/${VERSION_NUMBER}/$TARGET-${VERSION_NUMBER}-${BINARY_NAME}
-  if ! wget ${BINARY_URL} -O ${DIR}/bin/$BINARY &> /dev/null; then
-    echo "[ERROR] Failed to download ${BINARY_URL}" >&2
-    echo "[ERROR] Skipped $TARGET-${VERSION_NAME}-${ZIP_NAME}" >&2
-    continue
-  fi
+  cp $BINARY_NAME ${DIR}/bin/$BINARY
   TARGET_ZIP_FILE=`pwd`/dist/$TARGET-${VERSION_NUMBER}-${ZIP_NAME}
   pushd $DIR &> /dev/null
   chmod +x bin/$BINARY