From cf58caf06a1813eff48363b559ad18fb01ddaa90 Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Sat, 20 Jan 2018 12:09:31 +0000
Subject: [PATCH] [Minor] Add constructors attribute detection

---
 config.h.in | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/config.h.in b/config.h.in
index ce3ee9650..3bdb5bc75 100644
--- a/config.h.in
+++ b/config.h.in
@@ -365,4 +365,27 @@ extern uint64_t ottery_rand_uint64(void);
 #endif
 #endif
 
+#ifdef __cplusplus
+    #define RSPAMD_CONSTRUCTOR(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 RSPAMD_CONSTRUCTOR(f) INITIALIZER2_(f,"")
+    #else
+        #define RSPAMD_CONSTRUCTOR(f) INITIALIZER2_(f,"_")
+    #endif
+#else
+    #define RSPAMD_CONSTRUCTOR(f) \
+        static void f(void) __attribute__((constructor)); \
+        static void f(void)
+#endif
+
 #endif
-- 
2.39.5