feat: allow bazel-bob-update-config.exe on the command line

Allows passing in the Bazel target to perform the configuration.

Signed-off-by: Brandon Jones <brandon.jones@arm.com>
Change-Id: I89412bc3df961a6e673ad4497d17dd81e12168e4

Author: mattyclarkson

config.bash

@@ -33,8 +33,16 @@ done
 # Move to the working directory
 cd -P "${WORKDIR}"
 
+# Allow passed in `update_config`
+if command -v bazel-bob-update-config.exe &> /dev/null
+then
+  UPDATE_CONFIG=bazel-bob-update-config.exe
+else
+  UPDATE_CONFIG="${BOB_DIR}/config_system/update_config.py"
+fi
+
 # shellcheck disable=SC2294
-eval "${BOB_DIR}/config_system/update_config.py" --new -d "${SRCDIR}/Mconfig" \
+eval "${UPDATE_CONFIG}" --new -d "${SRCDIR}/Mconfig" \
     "${BOB_CONFIG_OPTS}" "${BOB_CONFIG_PLUGIN_OPTS}" \
     -j "${CONFIG_JSON}" \
     -c "${CONFIG_FILE}" \

config_system/BUILD.bazel

@@ -1,3 +1,4 @@
+load("@bazel_skylib//rules:native_binary.bzl", "native_binary")
 load("@config_deps//:requirements.bzl", "requirement")
 
 exports_files(
@@ -55,6 +56,12 @@ py_binary(
     deps = ["//config_system"],
 )
 
+native_binary(
+    name = "bazel-bob-update-config",
+    src = "update_config",
+    visibility = ["//visibility:public"],
+)
+
 py_binary(
     name = "get_configs_gazelle",
     srcs = ["get_configs_gazelle.py"],