Fix ld error - absl::variant_internal::ThrowBadVariantAccess not found

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="$GCS_LDFLAGS -lgoogle_cloud_cpp_common -lgoogle_cloud_cpp_storage"
+  GCS_LDFLAGS="$GCS_LDFLAGS -lgoogle_cloud_cpp_common -lgoogle_cloud_cpp_storage -labsl_bad_variant_access"
   COMMON_FLAGS="$COMMON_FLAGS $GCS_CCFLAGS"
   PLATFORM_LDFLAGS="$GCS_LDFLAGS $PLATFORM_LDFLAGS"
 fi