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--- a/configure.in
+++ b/configure.in
@@ -13,7 +13,7 @@ dnl Checks for libraries.
dnl Checks for header files.
AC_HEADER_STDC
-AC_CHECK_HEADERS(limits.h unistd.h math.h stdlib.h stdio.h)
+AC_CHECK_HEADERS(limits.h unistd.h math.h stdlib.h stdio.h endian.h sys/endian.h)
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
--- a/src/billard3d.c
+++ b/src/billard3d.c
@@ -24,7 +24,11 @@
#include <string.h>
#include <math.h>
#include <unistd.h>
+#ifdef HAVE_ENDIAN_H
#include <endian.h>
+#elif defined(HAVE_SYS_ENDIAN_H)
+#include <sys/endian.h>
+#endif
#ifndef USE_SDL
#include <GL/glut.h>
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