diff --git a/CMakeLists.txt b/CMakeLists.txt
index ab2b989..75e01d5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,13 +21,7 @@ include(HunterGate)
 include(GNUInstallDirs)
 include(defaults/HunterCacheServers)
 
-# Setup Hunter.
-# Hunter is going to be initialized only if building with tests,
-# where it is needed to get dependencies.
-HunterGate(
-    URL "https://github.com/ruslo/hunter/archive/v0.20.37.tar.gz"
-    SHA1 "51886d10428c924cc21756abc17623bcf4986386"
-)
+include(HunterConfig)
 
 project(evmc)
 set(PROJECT_VERSION "0.1.0.dev0")
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000..67e98d4
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,29 @@
+version: "{build}"
+branches:
+  only:
+  - master
+  - appveyor
+  - hunter
+configuration:
+  - Release
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      GENERATOR: "Visual Studio 15 2017 Win64"
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      GENERATOR: "Visual Studio 14 2015 Win64"
+cache:
+  - C:\.hunter\_Base\Cache -> cmake\HunterConfig.cmake
+
+before_build: |
+  if not exist build mkdir build
+  cd build
+  cmake -G "%GENERATOR%" .. -DBUILD_SHARED_LIBS=ON -DEVMC_EXAMPLES=ON -DEVMC_TESTING=ON -DCMAKE_INSTALL_PREFIX=C:\install
+
+build_script: |
+  cmake --build . --config %CONFIGURATION% --target install
+
+after_build: |
+  C:\projects\evmc\build\test\Release\evmc-test.exe
+  C:\install\bin\evmc-vmtester.exe C:\install\bin\evmc-examplevm.dll
diff --git a/cmake/HunterConfig.cmake b/cmake/HunterConfig.cmake
new file mode 100644
index 0000000..36d5712
--- /dev/null
+++ b/cmake/HunterConfig.cmake
@@ -0,0 +1,11 @@
+# EVMC: Ethereum Client-VM Connector API.
+# Copyright 2018 Pawel Bylica.
+# Licensed under the MIT License. See the LICENSE file.
+
+# Setup Hunter.
+# Hunter is going to be initialized only if building with tests,
+# where it is needed to get dependencies.
+HunterGate(
+    URL "https://github.com/ruslo/hunter/archive/v0.20.37.tar.gz"
+    SHA1 "51886d10428c924cc21756abc17623bcf4986386"
+)
diff --git a/examples/capi.c b/examples/capi.c
index bee81ff..6ffa402 100644
--- a/examples/capi.c
+++ b/examples/capi.c
@@ -10,12 +10,15 @@
 
 struct evmc_uint256be balance(struct evmc_context* context, const struct evmc_address* address)
 {
+    (void)context;
+    (void)address;
     struct evmc_uint256be ret = {.bytes = {1, 2, 3, 4}};
     return ret;
 }
 
 struct evmc_address address(struct evmc_context* context)
 {
+    (void)context;
     struct evmc_address ret = {.bytes = {1, 2, 3, 4}};
     return ret;
 }
@@ -29,6 +32,7 @@ static void print_address(const struct evmc_address* address)
 
 static int account_exists(struct evmc_context* context, const struct evmc_address* address)
 {
+    (void)context;
     printf("EVM-C: EXISTS @");
     print_address(address);
     printf("\n");
@@ -40,6 +44,9 @@ static void get_storage(struct evmc_uint256be* result,
                         const struct evmc_address* address,
                         const struct evmc_uint256be* key)
 {
+    (void)result;
+    (void)context;
+    (void)key;
     printf("EVM-C: SLOAD @");
     print_address(address);
     printf("\n");
@@ -50,6 +57,9 @@ static void set_storage(struct evmc_context* context,
                         const struct evmc_uint256be* key,
                         const struct evmc_uint256be* value)
 {
+    (void)context;
+    (void)key;
+    (void)value;
     printf("EVM-C: SSTORE @");
     print_address(address);
     printf("\n");
@@ -67,6 +77,7 @@ static void get_balance(struct evmc_uint256be* result,
 
 static size_t get_code_size(struct evmc_context* context, const struct evmc_address* address)
 {
+    (void)context;
     printf("EVM-C: CODESIZE @");
     print_address(address);
     printf("\n");
@@ -79,6 +90,10 @@ static size_t copy_code(struct evmc_context* context,
                         uint8_t* buffer_data,
                         size_t buffer_size)
 {
+    (void)context;
+    (void)code_offset;
+    (void)buffer_data;
+    (void)buffer_size;
     printf("EVM-C: COPYCODE @");
     print_address(address);
     printf("\n");
@@ -89,6 +104,7 @@ static void selfdestruct(struct evmc_context* context,
                          const struct evmc_address* address,
                          const struct evmc_address* beneficiary)
 {
+    (void)context;
     printf("EVM-C: SELFDESTRUCT ");
     print_address(address);
     printf(" -> ");
@@ -100,16 +116,25 @@ static void call(struct evmc_result* result,
                  struct evmc_context* context,
                  const struct evmc_message* msg)
 {
+    (void)context;
     printf("EVM-C: CALL (depth: %d)\n", msg->depth);
     result->status_code = EVMC_FAILURE;
 }
 
-static void get_tx_context(struct evmc_tx_context* result, struct evmc_context* context) {}
+static void get_tx_context(struct evmc_tx_context* result, struct evmc_context* context)
+{
+    (void)result;
+    (void)context;
+}
 
 static void get_block_hash(struct evmc_uint256be* result,
                            struct evmc_context* context,
                            int64_t number)
-{}
+{
+    (void)result;
+    (void)context;
+    (void)number;
+}
 
 /// EVM log callback.
 ///
@@ -121,6 +146,11 @@ static void evm_log(struct evmc_context* context,
                     const struct evmc_uint256be topics[],
                     size_t topics_count)
 {
+    (void)context;
+    (void)address;
+    (void)data;
+    (void)data_size;
+    (void)topics;
     printf("EVM-C: LOG%d\n", (int)topics_count);
 }
 
@@ -130,23 +160,31 @@ static const struct evmc_context_fn_table ctx_fn_table = {
 };
 
 /// Example how the API is supposed to be used.
-int main(int argc, char* argv[])
+int main()
 {
     struct evmc_instance* jit = evmc_create_examplevm();
     if (jit->abi_version != EVMC_ABI_VERSION)
         return 1;  // Incompatible ABI version.
 
-    uint8_t const code[] = "Place some EVM bytecode here";
+    const uint8_t code[] = "Place some EVM bytecode here";
     const size_t code_size = sizeof(code);
-    struct evmc_uint256be code_hash = {.bytes = {1, 2, 3}};
-    uint8_t const input[] = "Hello World!";
-    struct evmc_uint256be value = {{1, 0}};
-    struct evmc_address addr = {{0, 1, 2}};
-    int64_t gas = 200000;
+    const struct evmc_uint256be code_hash = {.bytes = {1, 2, 3}};
+    const uint8_t input[] = "Hello World!";
+    const struct evmc_uint256be value = {{1, 0}};
+    const struct evmc_address addr = {{0, 1, 2}};
+    const int64_t gas = 200000;
 
     struct evmc_context ctx = {&ctx_fn_table};
 
-    struct evmc_message msg = {addr, addr, value, input, sizeof(input), code_hash, gas, 0};
+    struct evmc_message msg;
+    msg.sender = addr;
+    msg.destination = addr;
+    msg.value = value;
+    msg.input_data = input;
+    msg.input_size = sizeof(input);
+    msg.code_hash = code_hash;
+    msg.gas = gas;
+    msg.depth = 0;
 
     struct evmc_result result = jit->execute(jit, &ctx, EVMC_HOMESTEAD, &msg, code, code_size);
 
diff --git a/examples/examplevm/examplevm.h b/examples/examplevm/examplevm.h
index f1ebf98..37261ef 100644
--- a/examples/examplevm/examplevm.h
+++ b/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);
diff --git a/include/evmc/instructions.h b/include/evmc/instructions.h
index 4492427..1dc50b9 100644
--- a/include/evmc/instructions.h
+++ b/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
 }
diff --git a/include/evmc/utils.h b/include/evmc/utils.h
new file mode 100644
index 0000000..c527c61
--- /dev/null
+++ b/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
diff --git a/lib/instructions/CMakeLists.txt b/lib/instructions/CMakeLists.txt
index 10cbca1..a9b0d3e 100644
--- a/lib/instructions/CMakeLists.txt
+++ b/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
diff --git a/test/vmtester/tests.cpp b/test/vmtester/tests.cpp
index 7d3e2c9..a284412 100644
--- a/test/vmtester/tests.cpp
+++ b/test/vmtester/tests.cpp
@@ -10,7 +10,7 @@
 
 static_assert(sizeof(evmc_uint256be) == 32, "evmc_uint256be is too big");
 static_assert(sizeof(evmc_address) == 20, "evmc_address is too big");
-static_assert(sizeof(evmc_result) == 64, "evmc_result does not fit cache line");
+static_assert(sizeof(evmc_result) <= 64, "evmc_result does not fit cache line");
 static_assert(sizeof(evmc_instance) <= 64, "evmc_instance does not fit cache line");
 static_assert(sizeof(evmc_message) <= 18 * 8, "evmc_message not optimally packed");
 static_assert(offsetof(evmc_message, code_hash) % 8 == 0, "evmc_message.code_hash not aligned");