work around O_DIRECT and mkostemp

examples/abt-io-overlap.c

@@ -13,10 +13,15 @@
 #include <openssl/rand.h>
 #include <errno.h>
 
+#include "abt-io-config.h"
 #include <abt.h>
 #include <abt-io.h>
 #include <abt-snoozer.h>
 
+#ifndef HAVE_ODIRECT
+#define O_DIRECT 0
+#endif
+
 struct worker_ult_common
 {
     int opt_io;
@@ -244,7 +249,11 @@ static void worker_ult(void *_arg)
         }
         else
         {
+#ifdef HAVE_MKOSTEMP
             fd = mkostemp(template, O_DIRECT|O_SYNC);
+#else
+            fd = mkstemp(template);
+#endif
             if(fd < 0)
             {
                 perror("mkostemp");

examples/concurrent-write-bench.c

@@ -13,10 +13,15 @@
 #include <float.h>
 #include <errno.h>
 
+#include "abt-io-config.h"
 #include <abt.h>
 #include <abt-io.h>
 #include <abt-snoozer.h>
 
+#ifndef HAVE_ODIRECT
+#define O_DIRECT 0
+#endif
+
 /* This is a simple benchmark that measures the
  * streaming, concurrent, sequentially-issued write throughput for a 
  * specified number of concurrent operations.  It includes an abt-io version and

examples/pthread-overlap.c

@@ -14,6 +14,12 @@
 #include <errno.h>
 #include <pthread.h>
 
+#include "abt-io-config.h"
+
+#ifndef HAVE_ODIRECT
+#define O_DIRECT 0
+#endif
+
 struct worker_pthread_common
 {
     int opt_io;
@@ -140,7 +146,11 @@ static void *worker_pthread(void *_arg)
 
     if(common->opt_io)
     {
+#ifdef HAVE_MKOSTEMP
         fd = mkostemp(template, O_DIRECT|O_SYNC);
+#else
+        fd = mkstemp(template);
+#endif
         if(fd < 0)
         {
             perror("mkostemp");

src/abt-io.c

@@ -297,7 +297,11 @@ static void abt_io_mkostemp_fn(void *foo)
 {
     struct abt_io_mkostemp_state *state = foo;
 
+#ifdef HAVE_MKOSTEMP
     *state->ret = mkostemp(state->template, state->flags);
+#else
+    *state->ret = mkstemp(state->template);
+#endif
     if(*state->ret < 0)
         *state->ret = -errno;