Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/mfbt/Compiler.h b/mfbt/Compiler.h
new file mode 100644
index 0000000000..96c276186d
--- /dev/null
+++ b/mfbt/Compiler.h
@@ -0,0 +1,34 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/* Various compiler checks. */
+
+#ifndef mozilla_Compiler_h
+#define mozilla_Compiler_h
+
+#define MOZ_IS_GCC 0
+
+#if !defined(__clang__) && defined(__GNUC__)
+
+#  undef MOZ_IS_GCC
+#  define MOZ_IS_GCC 1
+/*
+ * These macros should simplify gcc version checking. For example, to check
+ * for gcc 4.7.1 or later, check `#if MOZ_GCC_VERSION_AT_LEAST(4, 7, 1)`.
+ */
+#  define MOZ_GCC_VERSION_AT_LEAST(major, minor, patchlevel)            \
+    ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= \
+     ((major) * 10000 + (minor) * 100 + (patchlevel)))
+#  define MOZ_GCC_VERSION_AT_MOST(major, minor, patchlevel)             \
+    ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) <= \
+     ((major) * 10000 + (minor) * 100 + (patchlevel)))
+#  if !MOZ_GCC_VERSION_AT_LEAST(6, 1, 0)
+#    error "mfbt (and Gecko) require at least gcc 6.1 to build."
+#  endif
+
+#endif
+
+#endif /* mozilla_Compiler_h */