Upgrade to upstream tip of tree strace.
Change-Id: I56ccbfbb64885c61f160145f181e42dab78adefb
diff --git a/m4/long_long.m4 b/m4/long_long.m4
new file mode 100644
index 0000000..e6d22f0
--- /dev/null
+++ b/m4/long_long.m4
@@ -0,0 +1,29 @@
+dnl ### A macro to determine endianness of long long
+AC_DEFUN([AC_LITTLE_ENDIAN_LONG_LONG],
+[AC_MSG_CHECKING(for little endian long long)
+AC_CACHE_VAL(ac_cv_have_little_endian_long_long,
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[
+int main () {
+ union {
+ long long ll;
+ int l [2];
+ } u;
+ u.ll = 0x12345678;
+ if (u.l[0] == 0x12345678)
+ return 0;
+ return 1;
+}
+]])],[ac_cv_have_little_endian_long_long=yes],[ac_cv_have_little_endian_long_long=no],[
+if test "x$ac_cv_c_bigendian" = "xyes"; then
+ ac_cv_have_little_endian_long_long=no
+else
+ ac_cv_have_little_endian_long_long=yes
+fi
+])])
+AC_MSG_RESULT($ac_cv_have_little_endian_long_long)
+if test "$ac_cv_have_little_endian_long_long" = yes
+then
+ AC_DEFINE([HAVE_LITTLE_ENDIAN_LONG_LONG], 1,
+[Define if long long is little-endian.])
+fi
+])