fuzz: Link all targets once

1 files changed, 22 insertions, 3 deletions

diff --git a/src/test/fuzz/fuzz.h b/src/test/fuzz/fuzz.h
index 3be202b16e..544379c0b0 100644
--- a/src/test/fuzz/fuzz.h
+++ b/src/test/fuzz/fuzz.h
@@ -5,10 +5,29 @@
 #ifndef BITCOIN_TEST_FUZZ_FUZZ_H
 #define BITCOIN_TEST_FUZZ_FUZZ_H
 
-#include <stdint.h>
+#include <cstdint>
+#include <functional>
+#include <string_view>
 #include <vector>
 
-void initialize();
-void test_one_input(const std::vector<uint8_t>& buffer);
+using TypeTestOneInput = std::function<void(const std::vector<uint8_t>&)>;
+using TypeInitialize = std::function<void()>;
+
+void FuzzFrameworkRegisterTarget(std::string_view name, TypeTestOneInput target, TypeInitialize init);
+
+void FuzzFrameworkEmptyFun() {}
+
+#define FUZZ_TARGET(name) \
+    FUZZ_TARGET_INIT(name, FuzzFrameworkEmptyFun)
+
+#define FUZZ_TARGET_INIT(name, init_fun)                                      \
+    void name##_fuzz_target(const std::vector<uint8_t>&);                     \
+    struct name##_Before_Main {                                               \
+        name##_Before_Main()                                                  \
+        {                                                                     \
+            FuzzFrameworkRegisterTarget(#name, name##_fuzz_target, init_fun); \
+        }                                                                     \
+    } const static g_##name##_before_main;                                    \
+    void name##_fuzz_target(const std::vector<uint8_t>& buffer)
 
 #endif // BITCOIN_TEST_FUZZ_FUZZ_H