+printf "Checking if execinfo.h exists... ";
+$config{HAS_EXECINFO} = "0";
+my $fail = 0;
+open(EXECINFO, "</usr/include/execinfo.h") or $fail = 1;
+if ($fail) {
+ $fail = 0;
+ open(EXECINFO, "</usr/local/include/execinfo.h") or $fail = 1;
+ if (!$fail) {
+ printf "/usr/local/include/execinfo.h\n";
+ $config{HAS_EXECINFO} = "1";
+ close(EXECINFO);
+ }
+ else {
+ printf "Not found!\n";
+ }
+}
+else {
+ printf "/usr/include/execinfo.h\n";
+ $config{HAS_EXECINFO} = "1";
+ close(EXECINFO);
+}
+