Fix multiple inclusion guard in dlfcn.h and fix dlerror() prototype.

diff --git a/compat/dlfcn.h b/compat/dlfcn.h
index 931dd7ad9eb5ff161d39cdae873268317420fd21..469390b8f93a16edf48a4522f53859fee111a373 100644 (file)
--- a/compat/dlfcn.h
+++ b/compat/dlfcn.h
@@ -14,11 +14,14 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#ifndef _DLFCN_H_
+#define _DLFCN_H_
+
 /* Emulated functions. */
 void *dlopen(const char *path, int mode);
 int dlclose(void *handle);
 void *dlsym(void *handle, const char *symbol);
-const char *dlerror(void);
+char *dlerror(void);
 
 /* Values for dlopen() mode. */
 #define RTLD_LAZY      0x1