1 files changed, 56 insertions, 0 deletions
diff --git a/browser/app/winlauncher/freestanding/moz.build b/browser/app/winlauncher/freestanding/moz.build
new file mode 100644
index 0000000000..7a43d9a104
--- /dev/null
+++ b/browser/app/winlauncher/freestanding/moz.build
@@ -0,0 +1,56 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Library("winlauncher-freestanding")
+
+FORCE_STATIC_LIB = True
+
+# Our patched NtMapViewOfSection can be called before the process's import
+# table is populated.  Don't let the compiler insert any instrumentation
+# that might call an import.
+NO_PGO = True
+
+UNIFIED_SOURCES += [
+    "DllBlocklist.cpp",
+    "LoaderPrivateAPI.cpp",
+    "ModuleLoadFrame.cpp",
+    "SharedSection.cpp",
+]
+
+# This library must be compiled in a freestanding environment, as its code must
+# not assume that it has access to any runtime libraries.
+if CONFIG["CC_TYPE"] == "clang-cl":
+    CXXFLAGS += ["-Xclang"]
+
+CXXFLAGS += [
+    "-ffreestanding",
+]
+
+# Forcibly include Freestanding.h into all source files in this library.
+if CONFIG["CC_TYPE"] == "clang-cl":
+    CXXFLAGS += ["-FI"]
+else:
+    CXXFLAGS += ["-include"]
+
+CXXFLAGS += [SRCDIR + "/Freestanding.h"]
+
+OS_LIBS += [
+    "ntdll",
+    "ntdll_freestanding",
+]
+
+if CONFIG["COMPILE_ENVIRONMENT"] and CONFIG["LLVM_DLLTOOL"]:
+    GeneratedFile(
+        "%sntdll_freestanding.%s" % (CONFIG["LIB_PREFIX"], CONFIG["LIB_SUFFIX"]),
+        script="gen_ntdll_freestanding_lib.py",
+        inputs=["ntdll_freestanding.def"],
+        flags=[CONFIG["LLVM_DLLTOOL"]] + CONFIG["LLVM_DLLTOOL_FLAGS"],
+    )
+
+DisableStlWrapping()
+
+with Files("**"):
+    BUG_COMPONENT = ("Firefox", "Launcher Process")