Add version.h header with information about the library version

.bumpversion.cfg

@@ -18,4 +18,5 @@ values =
 	rel
 
 [bumpversion:file:CMakeLists.txt]
+[bumpversion:file:include/ethash/version.h]
 

include/ethash/version.h

@@ -0,0 +1,18 @@
+/* ethash: C/C++ implementation of Ethash, the Ethereum Proof of Work algorithm.
+ * Copyright 2019 Pawel Bylica.
+ * Licensed under the Apache License, Version 2.0.
+ */
+
+#pragma once
+
+/** The ethash library version. */
+#define ETHASH_VERSION "0.4.2"
+
+#if __cplusplus >= 201103L
+namespace ethash
+{
+/// The ethash library version.
+constexpr auto version = ETHASH_VERSION;
+
+}  // namespace ethash
+#endif

test/integration/cmake-config/cmake_config_test.cpp

@@ -3,9 +3,12 @@
 // Licensed under the Apache License, Version 2.0. See the LICENSE file.
 
 #include <ethash/ethash.hpp>
+#include <ethash/version.h>
 
 int main()
 {
+    static_assert(sizeof(ethash::version) >= 6, "incorrect ethash::version");
+
     uint8_t seed_bytes[32] = {0};
     ethash::hash256 seed = ethash::hash256_from_bytes(seed_bytes);
     return ethash::find_epoch_number(seed);

test/unittests/CMakeLists.txt

@@ -16,8 +16,11 @@ add_executable(
     test_managed.cpp
     test_primes.cpp
     test_progpow.cpp
+    test_version.cpp
 )
 
+set_source_files_properties(test_version.cpp PROPERTIES COMPILE_DEFINITIONS TEST_PROJECT_VERSION="${PROJECT_VERSION}")
+
 target_link_libraries(ethash-test PRIVATE ethash GTest::gtest GTest::main)
 target_include_directories(ethash-test PRIVATE ${ETHASH_PRIVATE_INCLUDE_DIR})
 set_target_properties(ethash-test PROPERTIES RUNTIME_OUTPUT_DIRECTORY ..)

test/unittests/test_version.cpp

@@ -0,0 +1,15 @@
+// ethash: C/C++ implementation of Ethash, the Ethereum Proof of Work algorithm.
+// Copyright 2019 Pawel Bylica.
+// Licensed under the Apache License, Version 2.0.
+
+#include <ethash/version.h>
+
+#include <gtest/gtest.h>
+
+TEST(libethash, version)
+{
+    static_assert(sizeof(ethash::version) >= 6, "incorrect ethash::version");
+
+    EXPECT_EQ(ETHASH_VERSION, TEST_PROJECT_VERSION);
+    EXPECT_EQ(ethash::version, TEST_PROJECT_VERSION);
+}