Switch to better initializer strategy

src/glue.c

@@ -29,55 +29,39 @@
 #include "common.h"
 #include "libimobiledevice-glue/thread.h"
 
-extern void term_colors_init();
-
-static void internal_glue_init(void)
-{
-	term_colors_init();
-}
-
-static void internal_glue_deinit(void)
-{
-
-}
-
-static thread_once_t init_once = THREAD_ONCE_INIT;
-static thread_once_t deinit_once = THREAD_ONCE_INIT;
+// Reference: https://stackoverflow.com/a/2390626/1806760
+// Initializer/finalizer sample for MSVC and GCC/Clang.
+// 2010-2016 Joe Lowe. Released into the public domain.
 
-#ifndef HAVE_ATTRIBUTE_CONSTRUCTOR
-  #if defined(__llvm__) || defined(__GNUC__)
-    #define HAVE_ATTRIBUTE_CONSTRUCTOR
-  #endif
+#ifdef __cplusplus
+    #define INITIALIZER(f) \
+        static void f(void); \
+        struct f##_t_ { f##_t_(void) { f(); } }; static f##_t_ f##_; \
+        static void f(void)
+#elif defined(_MSC_VER)
+    #pragma section(".CRT$XCU",read)
+    #define INITIALIZER2_(f,p) \
+        static void f(void); \
+        __declspec(allocate(".CRT$XCU")) void (*f##_)(void) = f; \
+        __pragma(comment(linker,"/include:" p #f "_")) \
+        static void f(void)
+    #ifdef _WIN64
+        #define INITIALIZER(f) INITIALIZER2_(f,"")
+    #else
+        #define INITIALIZER(f) INITIALIZER2_(f,"_")
+    #endif
+#else
+    #define INITIALIZER(f) \
+        static void f(void) __attribute__((__constructor__)); \
+        static void f(void)
 #endif
 
-#ifdef HAVE_ATTRIBUTE_CONSTRUCTOR
-static void __attribute__((constructor)) limd_glue_initialize(void)
-{
-    thread_once(&init_once, internal_glue_init);
-}
+extern void term_colors_init();
 
-static void __attribute__((destructor)) limd_glue_deinitialize(void)
+INITIALIZER(internal_glue_init)
 {
-    thread_once(&deinit_once, internal_glue_deinit);
-}
-#elif defined(WIN32)
-BOOL WINAPI DllMain(HINSTANCE hModule, DWORD dwReason, LPVOID lpReserved)
-{
-    switch (dwReason) {
-    case DLL_PROCESS_ATTACH:
-        thread_once(&init_once, internal_glue_init);
-        break;
-    case DLL_PROCESS_DETACH:
-        thread_once(&deinit_once, internal_glue_deinit);
-        break;
-    default:
-        break;
-    }
-    return 1;
+	term_colors_init();
 }
-#else
-#warning No compiler support for constructor/destructor attributes, some features might not be available.
-#endif
 
 const char* libimobiledevice_glue_version()
 {