Bug 1529194 - Allow to opt-in to widevine on aarch64 Windows. r=firef…

…ox-build-system-reviewers,chmanchester

This uses artifacts from a win32 build to get the necessary DLLs.

Differential Revision: https://phabricator.services.mozilla.com/D20597

Makefile.in

@@ -170,6 +170,13 @@ endif
 recurse_artifact:
 	$(topsrcdir)/mach --log-no-times artifact install$(if $(MOZ_ARTIFACT_BUILD_SYMBOLS), --symbols)$(if $(MOZ_AUTOMATION), --host-bins)
 
+ifdef MOZ_EME_WIN32_ARTIFACT
+recurse_win32-artifact:
+	rm -rf $(DIST)/i686
+	$(topsrcdir)/mach --log-no-times artifact install --job $(if $(MOZ_PGO),win32-pgo,win32-opt) --no-tests --distdir $(DIST)/i686
+	mv $(DIST)/i686/bin/* $(DIST)/i686
+endif
+
 ifdef MOZ_WIDGET_TOOLKIT
 ifdef ENABLE_TESTS
 # Additional makefile targets to call automated test suites

browser/installer/Makefile.in

@@ -56,6 +56,10 @@ ifdef MOZ_ARTIFACT_BUILDS
 DEFINES += -DMOZ_ARTIFACT_BUILDS=1
 endif
 
+ifdef MOZ_EME_WIN32_ARTIFACT
+DEFINES += -DMOZ_EME_WIN32_ARTIFACT=1
+endif
+
 DEFINES += -DJAREXT=
 
 ifdef MOZ_ANGLE_RENDERER

browser/installer/allowed-dupes.mn

@@ -152,3 +152,7 @@ browser/defaults/settings/main/example.json
 # Bug 1463748 - Fork and pref-off the new error pages
 browser/chrome/browser/content/browser/aboutNetError-new.xhtml
 browser/chrome/browser/content/browser/aboutNetError.xhtml
+#ifdef MOZ_EME_WIN32_ARTIFACT
+gmp-clearkey/0.1/manifest.json
+i686/gmp-clearkey/0.1/manifest.json
+#endif

browser/installer/package-manifest.in

@@ -456,3 +456,18 @@ bin/libfreebl_32int64_3.so
 #ifdef PKG_LOCALE_MANIFEST
 #include @PKG_LOCALE_MANIFEST@
 #endif
+
+#ifdef MOZ_EME_WIN32_ARTIFACT
+i686/plugin-container.exe
+i686/xul.dll
+i686/nss3.dll
+i686/mozglue.dll
+i686/lgpllibs.dll
+i686/msvcp140.dll
+i686/vcruntime140.dll
+i686/gmp-clearkey/0.1/clearkey.dll
+[eme destdir="i686"]
+; We assume the file we generate locally is the same as what was in the win32
+; build, which, practically speaking, is the case.
+@BINPATH@/gmp-clearkey/0.1/manifest.json
+#endif

config/baseconfig.mk

@@ -42,7 +42,7 @@ endif # WINNT
 ifndef INCLUDED_AUTOCONF_MK
 default::
 else
-TIERS := $(if $(MOZ_ARTIFACT_BUILDS),artifact )pre-export export $(if $(COMPILE_ENVIRONMENT),compile )misc libs tools$(if $(filter check recurse_check,$(MAKECMDGOALS)), check)
+TIERS := $(if $(MOZ_ARTIFACT_BUILDS),artifact )$(if $(MOZ_EME_WIN32_ARTIFACT),win32-artifact )pre-export export $(if $(COMPILE_ENVIRONMENT),compile )misc libs tools$(if $(filter check recurse_check,$(MAKECMDGOALS)), check)
 endif
 
 # These defines are used to support the twin-topsrcdir model for comm-central.

toolkit/moz.configure

@@ -522,13 +522,17 @@ def eme_choices(target):
         target.os not in ('Android', 'iOS') and
         target.cpu in ('x86', 'x86_64')):
         return ('widevine',)
+    if target.kernel == 'WINNT' and target.cpu == 'aarch64':
+        return ('widevine',)
 
 
-# Widevine is enabled by default in desktop browser builds.
-@depends(build_project, eme_choices)
-def eme_default(build_project, choices):
+# Widevine is enabled by default in desktop browser builds, except
+# on aarch64 Windows.
+@depends(build_project, eme_choices, target)
+def eme_default(build_project, choices, target):
     if build_project == 'browser':
-        return choices
+        if target.kernel != 'WINNT' or target.cpu != 'aarch64':
+            return choices
 
 
 option('--enable-eme',
@@ -555,6 +559,15 @@ def eme_modules(value):
 # None.
 set_config('MOZ_EME_MODULES', eme_modules | dependable([]))
 
+
+@depends(eme_modules, target, when=eme_modules)
+def eme_win32_artifact(modules, target):
+    if 'widevine' in modules and target.kernel == 'WINNT' and target.cpu == 'aarch64':
+        return True
+
+
+set_config('MOZ_EME_WIN32_ARTIFACT', eme_win32_artifact)
+
 option(name='--enable-chrome-format',
        help='Select FORMAT of chrome files during packaging.',
        nargs=1,