acl_hal_mmd: declare dlopen() wrappers as static functions

These functions are only used within the translation unit.

Author: pcolberg

src/acl_hal_mmd.cpp

@@ -363,7 +363,8 @@ unsigned interrupt_user_data[ACL_MAX_DEVICE];
 // ********************* Helper functions ********************
 #define MAX_BOARD_NAMES_LEN (ACL_MAX_DEVICE * 30 + 1)
 #define MMD_VERSION_LEN 30
-void *my_dlopen_flags(const char *library_name, int flag, char **error_msg) {
+static void *my_dlopen_flags(const char *library_name, int flag,
+                             char **error_msg) {
   void *library;
   acl_assert_locked();
 
@@ -390,15 +391,17 @@ void *my_dlopen_flags(const char *library_name, int flag, char **error_msg) {
 #endif
   return library;
 }
-void *my_dlopen(const char *library_name, char **error_msg) {
+
+static void *my_dlopen(const char *library_name, char **error_msg) {
 #ifdef _WIN32
   return my_dlopen_flags(library_name, 0, error_msg);
 #else
   return my_dlopen_flags(library_name, RTLD_NOW, error_msg);
 #endif
 }
 
-void *my_dlsym(void *library, const char *function_name, char **error_msg) {
+static void *my_dlsym(void *library, const char *function_name,
+                      char **error_msg) {
   void *symbol;
   acl_assert_locked();
 #ifdef _WIN32
@@ -422,7 +425,7 @@ void *my_dlsym(void *library, const char *function_name, char **error_msg) {
   return symbol;
 }
 
-void my_dlclose(void *library) {
+static void my_dlclose(void *library) {
   acl_assert_locked();
 #ifdef _WIN32
   FreeLibrary((HMODULE)library);