Cleanup: move endian values from BKE_global into BLI_endian_defines

This change was prompted by D6408 which moves thumbnail extraction into
a shared function that happens use these endian defines but only links
blenlib.

There is no need for these defines to be associated with globals
so move into their own header.

1 files changed, 38 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_endian_defines.h b/source/blender/blenlib/BLI_endian_defines.h
new file mode 100644
index 00000000000..31f28572c79
--- /dev/null
+++ b/source/blender/blenlib/BLI_endian_defines.h
@@ -0,0 +1,38 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+/** \file
+ * \ingroup bli
+ */
+
+/* NOTE: these names are historic and could use a more generic prefix.
+ * This could be done as part of a bigger refactor. */
+
+/** ENDIAN_ORDER: indicates what endianness the platform where the file was written had. */
+#if !defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)
+#  error Either __BIG_ENDIAN__ or __LITTLE_ENDIAN__ must be defined.
+#endif
+
+#define L_ENDIAN 1
+#define B_ENDIAN 0
+
+#ifdef __BIG_ENDIAN__
+#  define ENDIAN_ORDER B_ENDIAN
+#else
+#  define ENDIAN_ORDER L_ENDIAN
+#endif