Bug 1838481 - Add topobjdir to mozinfo.json r=gbrown

Differential Revision: https://phabricator.services.mozilla.com/D180972

build/docs/mozinfo.rst

@@ -168,6 +168,11 @@ topsrcdir
 
    Always defined.
 
+topobjdir
+   The path to the obj directory the build came from.
+
+   Always defined.
+
 webrender
    Whether or not WebRender is enabled as the Gecko compositor.
 

layout/tools/reftest/runreftest.py

@@ -546,8 +546,6 @@ class RefTest(object):
             xrePath=options.xrePath, debugger=options.debugger
         )
         browserEnv["XPCOM_DEBUG_BREAK"] = "stack"
-        if hasattr(options, "topobjdir"):
-            browserEnv["MOZ_DEVELOPER_OBJ_DIR"] = options.topobjdir
 
         if mozinfo.info["asan"]:
             # Disable leak checking for reftests for now

python/mozbuild/mozbuild/mozinfo.py

@@ -30,6 +30,7 @@ def build_dict(config, env=os.environ):
 
     d = {}
     d["topsrcdir"] = config.topsrcdir
+    d["topobjdir"] = config.topobjdir
 
     if config.mozconfig:
         d["mozconfig"] = config.mozconfig

testing/mochitest/runtests.py

@@ -1975,9 +1975,6 @@ toolbar#nav-bar {
             xrePath=options.xrePath, env=env, debugger=debugger, useLSan=useLSan
         )
 
-        if hasattr(options, "topobjdir"):
-            browserEnv["MOZ_DEVELOPER_OBJ_DIR"] = options.topobjdir
-
         if options.headless:
             browserEnv["MOZ_HEADLESS"] = "1"
 

testing/mozbase/mozrunner/mozrunner/utils.py

@@ -121,6 +121,7 @@ def test_environment(
 
     # Allow non-packaged builds to access symlinked modules in the source dir
     env["MOZ_DEVELOPER_REPO_DIR"] = mozinfo.info.get("topsrcdir")
+    env["MOZ_DEVELOPER_OBJ_DIR"] = mozinfo.info.get("topobjdir")
 
     # crashreporter
     env["GNOME_DISABLE_CRASH_DIALOG"] = "1"