Merge pull request #3 from ethereum/ci

Build on CI

.gitignore

@@ -0,0 +1,3 @@
+/build
+/cmake-build-*
+/.idea

CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(evmc)
+
+add_library(evmc INTERFACE)
+target_include_directories(evmc INTERFACE include)
+
+option(EVMC_BUILD_EXAMPLES "Build EVMC examples" ON)
+if(EVMC_BUILD_EXAMPLES)
+    add_subdirectory(examples)
+endif()

circle.yml

@@ -0,0 +1,21 @@
+version: 2
+jobs:
+
+  build:
+    docker:
+      - image: ethereum/cpp-build-env
+    steps:
+      - checkout
+      - run:
+          name: "Configure"
+          working_directory: ~/build
+          command: cmake ../project
+      - run:
+          name: "Build"
+          command: cmake --build ~/build
+
+workflows:
+  version: 2
+  evmc:
+    jobs:
+      - build

examples/CMakeLists.txt

@@ -1,8 +1,7 @@
 add_library(example-vm STATIC examplevm.c)
-target_include_directories(example-vm PRIVATE ../include)
+target_link_libraries(example-vm PRIVATE evmc)
 target_compile_options(example-vm PRIVATE -Wno-extra)
 
 add_executable(example-capi capi.c)
-target_include_directories(example-capi PRIVATE ../include)
-target_link_libraries(example-capi PRIVATE example-vm)
+target_link_libraries(example-capi PRIVATE evmc example-vm)
 target_compile_options(example-capi PRIVATE -Wno-extra)