configure: new --dynamic-libengines build option

[fio.git] / ioengines.c

diff --git a/ioengines.c b/ioengines.c
index 2c7a0df9ed39fa02da08691c4fb85cdf6eadbb90..78262bc1a3c70484701345e524f17fb06e60870e 100644 (file)
--- a/ioengines.c
+++ b/ioengines.c
@@ -75,6 +75,19 @@ static struct ioengine_ops *find_ioengine(const char *name)
        return NULL;
 }
 
+#ifdef CONFIG_DYNAMIC_ENGINES
+static void *dlopen_external(struct thread_data *td, const char *engine)
+{
+       char engine_path[PATH_MAX];
+
+       sprintf(engine_path, "%s/lib%s.so", FIO_EXT_ENG_DIR, engine);
+
+       return dlopen(engine_path, RTLD_LAZY);
+}
+#else
+#define dlopen_external(td, engine) (NULL)
+#endif
+
 static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
                                            const char *engine_lib)
 {
@@ -86,8 +99,11 @@ static struct ioengine_ops *dlopen_ioengine(struct thread_data *td,
        dlerror();
        dlhandle = dlopen(engine_lib, RTLD_LAZY);
        if (!dlhandle) {
-               td_vmsg(td, -1, dlerror(), "dlopen");
-               return NULL;
+               dlhandle = dlopen_external(td, engine_lib);
+               if (!dlhandle) {
+                       td_vmsg(td, -1, dlerror(), "dlopen");
+                       return NULL;
+               }
        }
 
        /*