diff --git a/fio-3.7/configure b/fio-3.7-edit/configure
index 9bdc7a1..ed345ba 100755
--- a/configure
+++ b/configure
@@ -2462,3 +2462,22 @@ SRCDIR:=`dirname $0`
 include \$(SRCDIR)/Makefile
 EOF
 fi
+
+##########################################
+# check for gettid()
+gettid="no"
+cat > $TMPC << EOF
+#include <unistd.h>
+int main(int argc, char **argv)
+{
+  return gettid();
+}
+EOF
+if compile_prog "" "" "gettid"; then
+  gettid="yes"
+fi
+print_config "gettid" "$gettid"
+
+if test "$gettid" = "yes"; then
+  output_sym "CONFIG_HAVE_GETTID"
+fi
diff --git a/fio-3.7/os/os-linux.h b/fio-3.7-edit/os/os-linux.h
index a550bba..90d8929 100644
--- a/os/os-linux.h
+++ b/os/os-linux.h
@@ -126,10 +126,12 @@ static inline int ioprio_set(int which, int who, int ioprio_class, int ioprio)
 	return syscall(__NR_ioprio_set, which, who, ioprio);
 }
 
+#ifndef CONFIG_HAVE_GETTID
 static inline int gettid(void)
 {
 	return syscall(__NR_gettid);
 }
+#endif
 
 #define SPLICE_DEF_SIZE	(64*1024)