fix build error of missing the lib of absl_bad_optional_access

Author: githubzilla

build_tools/build_detect_platform

@@ -646,7 +646,7 @@ if [ "${USE_GCP}XXX" = "1XXX" ]; then
   GCP_SDK=/usr/local
   GCI=${GCP_SDK}/include/
   GCS_CCFLAGS="$GCS_CCFLAGS -I$GCI -DUSE_GCP"
-  GCS_LDFLAGS="$GCS_LDFLAGS -lgoogle_cloud_cpp_common -lgoogle_cloud_cpp_storage -labsl_bad_variant_access"
+  GCS_LDFLAGS="$GCS_LDFLAGS -lgoogle_cloud_cpp_common -lgoogle_cloud_cpp_storage -labsl_bad_variant_access -labsl_bad_optional_access"
   COMMON_FLAGS="$COMMON_FLAGS $GCS_CCFLAGS"
   PLATFORM_LDFLAGS="$GCS_LDFLAGS $PLATFORM_LDFLAGS"
 fi
@@ -842,4 +842,4 @@ if test -n "$USE_FOLLY"; then
 fi
 if test -n "$PPC_LIBC_IS_GNU"; then
   echo "PPC_LIBC_IS_GNU=$PPC_LIBC_IS_GNU" >> "$OUTPUT"
-fi
+fi