Bug 1519167 - Part 1: Add config for Temporal. r=spidermonkey-reviewe…

…rs,dminor

Add a new configure option "--with-temporal-api" to enable the Temporal API.

This option is off by default, because the Temporal spec is still work-in-progress.

Time zone and calendrical operations will require ICU, so we don't support
Temporal when "--without-intl-api" is specified.

Differential Revision: https://phabricator.services.mozilla.com/D174153

js/moz.configure

@@ -1171,6 +1171,21 @@ set_define("U_USING_ICU_NAMESPACE", "0", when="--with-intl-api")
 set_define("U_STATIC_IMPLEMENTATION", True, when=depends(system_icu)(lambda x: not x))
 
 
+# ECMAScript Temporal API Support (uses ICU)
+# ======================================================
+
+option("--with-temporal-api", default=False, help="Enable ECMAScript Temporal API")
+
+set_config("JS_HAS_TEMPORAL_API", True, when="--with-temporal-api")
+set_define("JS_HAS_TEMPORAL_API", True, when="--with-temporal-api")
+
+
+@depends("--with-temporal-api", "--with-intl-api")
+def check_temporal_api(temporal_enabled, intl_enabled):
+    if temporal_enabled and not intl_enabled:
+        die("Can't use both --with-temporal-api and --without-intl-api")
+
+
 # Initial support for WebAssembly JS-API Type Reflections
 # =======================================================
 

js/src/js-config.h.in

@@ -41,6 +41,9 @@
 /* Define to 1 if SpiderMonkey should include support for the Intl API. */
 #undef JS_HAS_INTL_API
 
+/* Define to 1 if SpiderMonkey should include support for the Temporal API. */
+#undef JS_HAS_TEMPORAL_API
+
 /* Define to 1 if SpiderMonkey should include a breakpoint function for
  * artificial OOMs. */
 #undef JS_OOM_BREAKPOINT