Fix detection of big-endian systems

DentonW / DevIL

Developer's Image Library (DevIL) is a cross-platform image library utilizing a simple syntax to load, save, convert, manipulate, filter, and display a variety of images with ease. It is highly portable and has been ported to several platforms.

http://openil.sourceforge.net/

GNU Lesser General Public License v2.1

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Fix detection of big-endian systems #85

Open ryandesign opened 4 years ago

ryandesign commented 4 years ago

https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html

__BYTE_ORDER__ is defined to one of the values __ORDER_LITTLE_ENDIAN__, __ORDER_BIG_ENDIAN__, or __ORDER_PDP_ENDIAN__ ...