From 90fc3833203192ff5a6009d339454b0265b4efc1 Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Fri, 4 Feb 2022 04:21:28 +0100
Subject: Add support for Apple's OPACK encoding and TLV format

---
 configure.ac | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index bfc443e..4e40db1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,6 +46,18 @@ AC_TYPE_UINT8_T
 # Checks for library functions.
 AC_CHECK_FUNCS([asprintf strcasecmp strdup strerror strndup stpcpy vasprintf getifaddrs])
 
+AC_CHECK_HEADER(endian.h, [ac_cv_have_endian_h="yes"], [ac_cv_have_endian_h="no"])
+if test "x$ac_cv_have_endian_h" = "xno"; then
+  AC_DEFINE(__LITTLE_ENDIAN,1234,[little endian])
+  AC_DEFINE(__BIG_ENDIAN,4321,[big endian])
+  AC_C_BIGENDIAN([ac_cv_c_bigendian="yes"], [ac_cv_c_bigendian="no"], [], [])
+  if test "x$ac_cv_c_bigendian" = "xyes"; then
+    AC_DEFINE(__BYTE_ORDER,4321,[big endian byte order])
+  else
+    AC_DEFINE(__BYTE_ORDER,1234,[little endian byte order])
+  fi
+fi
+
 # Check for operating system
 AC_MSG_CHECKING([for platform-specific build settings])
 case ${host_os} in
-- 
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