Properly export symbols from DLLs

examples/examplevm/examplevm.h

@@ -6,8 +6,9 @@
 #pragma once
 
 #include <evmc/evmc.h>
+#include <evmc/utils.h>
 
 /**
  * Creates EVMC Example VM.
  */
-struct evmc_instance* evmc_create_examplevm(void);
+EVMC_EXPORT struct evmc_instance* evmc_create_examplevm(void);

include/evmc/instructions.h

@@ -6,6 +6,7 @@
 #pragma once
 
 #include <evmc/evmc.h>
+#include <evmc/utils.h>
 
 #include <stdint.h>
 
@@ -191,7 +192,7 @@ struct evmc_instruction_metrics
  * @return          The pointer to the array of 256 instruction metrics. Null pointer in case
  *                  an invalid EVM revision provided.
  */
-const struct evmc_instruction_metrics* evmc_get_instruction_metrics_table(
+EVMC_EXPORT const struct evmc_instruction_metrics* evmc_get_instruction_metrics_table(
     enum evmc_revision revision);
 
 /**
@@ -203,7 +204,7 @@ const struct evmc_instruction_metrics* evmc_get_instruction_metrics_table(
  * @return          The pointer to the array of 256 instruction names. Null pointer in case
  *                  an invalid EVM revision provided.
  */
-const char* const* evmc_get_instruction_names_table(enum evmc_revision revision);
+EVMC_EXPORT const char* const* evmc_get_instruction_names_table(enum evmc_revision revision);
 
 #if __cplusplus
 }

include/evmc/utils.h

@@ -0,0 +1,12 @@
+/* EVMC: Ethereum Client-VM Connector API.
+ * Copyright 2018 Pawel Bylica.
+ * Licensed under the MIT License. See the LICENSE file.
+ */
+
+#pragma once
+
+#ifdef _MSC_VER
+#define EVMC_EXPORT __declspec(dllexport)
+#else
+#define EVMC_EXPORT __attribute__ ((visibility ("default")))
+#endif

lib/instructions/CMakeLists.txt

@@ -3,7 +3,7 @@
 # Licensed under the MIT License. See the LICENSE file.
 
 add_library(
-    instructions
+    instructions STATIC
     ${include_dir}/evmc/instructions.h
     instruction_metrics.c
     instruction_names.c