Merge "Add the ability to source RBE related scripts from envsetup.sh" am: 660fdcd664 am: 2a678d73ab am: d66723fbe6 am: 53d07e9f0d

Original change: https://android-review.googlesource.com/c/platform/build/+/1766185

Change-Id: Iffe667b37563c1fc587e567af3449e5d34b8123c

envsetup.sh

@@ -1875,6 +1875,16 @@ function showcommands() {
     fi
 }
 
+# Source necessary setup scripts needed to run the build with Remote Execution.
+function source_rbe() {
+    local T=$(gettop)
+
+    if [[ "x$USE_RBE" != "x" && "$USE_RBE" != "false" ]]; then
+        . $T/build/make/rbesetup.sh --skip-envsetup
+    fi
+}
+
 validate_current_shell
 source_vendorsetup
+source_rbe
 addcompletions

rbesetup.sh

@@ -24,8 +24,11 @@ function _source_env_setup_script() {
 }
 
 # This function needs to run first as the remaining defining functions may be
-# using the envsetup.sh defined functions.
-_source_env_setup_script || return
+# using the envsetup.sh defined functions. Skip this part if this script is already
+# being invoked from envsetup.sh.
+if [[ "$1" != "--skip-envsetup" ]]; then
+  _source_env_setup_script || return
+fi
 
 # This function prefixes the given command with appropriate variables needed
 # for the build to be executed with RBE.