Fix ethash C header

codecov.yml

@@ -3,3 +3,4 @@ comment:
 ignore:
   - "test/benchmarks/*"
   - "test/fakeminer/*"
+  - "test/integration/*"

include/ethash/ethash.h

@@ -7,7 +7,11 @@
 
 #ifdef __cplusplus
 #define NOEXCEPT noexcept
+#else
+#define NOEXCEPT
+#endif
 
+#ifdef __cplusplus
 extern "C" {
 #endif
 
@@ -41,9 +45,9 @@ int ethash_calculate_light_cache_num_items(int epoch_number) NOEXCEPT;
 int ethash_calculate_full_dataset_num_items(int epoch_number) NOEXCEPT;
 
 
-ethash_epoch_context* ethash_create_epoch_context(int epoch_number) NOEXCEPT;
+struct ethash_epoch_context* ethash_create_epoch_context(int epoch_number) NOEXCEPT;
 
-void ethash_destroy_epoch_context(ethash_epoch_context* context) NOEXCEPT;
+void ethash_destroy_epoch_context(struct ethash_epoch_context* context) NOEXCEPT;
 
 #ifdef __cplusplus
 }

test/CMakeLists.txt

@@ -3,4 +3,5 @@
 
 add_subdirectory(benchmarks)
 add_subdirectory(fakeminer)
+add_subdirectory(integration)
 add_subdirectory(unittests)

test/integration/CMakeLists.txt

@@ -0,0 +1,5 @@
+# ethash: C/C++ implementation of Ethash, the Ethereum Proof of Work algorithm.
+# Copyright 2018 Pawel Bylica.
+# Licensed under the Apache License, Version 2.0. See the LICENSE file.
+
+add_subdirectory(compilation)

test/integration/compilation/CMakeLists.txt

@@ -0,0 +1,15 @@
+# ethash: C/C++ implementation of Ethash, the Ethereum Proof of Work algorithm.
+# Copyright 2018 Pawel Bylica.
+# Licensed under the Apache License, Version 2.0. See the LICENSE file.
+
+add_library(test-compile-c90 STATIC compilation_test.c)
+target_link_libraries(test-compile-c90 PRIVATE ethash)
+set_target_properties(test-compile-c90 PROPERTIES C_STANDARD 90 C_EXTENSIONS OFF)
+
+add_library(test-compile-c99 STATIC compilation_test.c)
+target_link_libraries(test-compile-c99 PRIVATE ethash)
+set_target_properties(test-compile-c99 PROPERTIES C_STANDARD 99 C_EXTENSIONS OFF)
+
+add_library(test-compile-c11 STATIC compilation_test.c)
+target_link_libraries(test-compile-c11 PRIVATE ethash)
+set_target_properties(test-compile-c11 PROPERTIES C_STANDARD 11 C_EXTENSIONS OFF)

test/integration/compilation/compilation_test.c

@@ -0,0 +1,15 @@
+/* ethash: C/C++ implementation of Ethash, the Ethereum Proof of Work algorithm.
+ * Copyright 2018 Pawel Bylica.
+ * Licensed under the Apache License, Version 2.0. See the LICENSE file.
+ */
+
+#include <ethash/ethash.h>
+
+int test()
+{
+    int sum = 0;
+    sum += ETHASH_EPOCH_LENGTH;
+    sum += ETHASH_LIGHT_CACHE_ITEM_SIZE;
+    sum += ETHASH_FULL_DATASET_ITEM_SIZE;
+    return sum;
+}