1 files changed, 98 insertions, 0 deletions
diff --git a/cmake/aws_sdk.cmake b/cmake/aws_sdk.cmake
new file mode 100644
index 00000000..a0d46e1a
--- /dev/null
+++ b/cmake/aws_sdk.cmake
@@ -0,0 +1,98 @@
+MACRO (SKIP_AWS_SDK MSG)
+  SET(${RETVAL} OFF PARENT_SCOPE)
+  SET(${REASON} ${MSG} PARENT_SCOPE)
+  RETURN()
+ENDMACRO()
+
+FUNCTION (CHECK_AWS_SDK RETVAL REASON)
+  # AWS_SDK_EXTERNAL_PROJECT must be ON
+  IF(NOT AWS_SDK_EXTERNAL_PROJECT)
+    SKIP_AWS_SDK("AWS_SDK_EXTERNAL_PROJECT is not ON")
+  ENDIF()
+  IF(NOT NOT_FOR_DISTRIBUTION)
+    SKIP_AWS_SDK("AWS SDK has Apache 2.0 License which is not compatible with GPLv2. Set -DNOT_FOR_DISTRIBUTION=ON if you need it")
+  ENDIF()
+  # Check compiler support
+  IF(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+    EXECUTE_PROCESS(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
+    IF (GCC_VERSION VERSION_LESS 4.8)
+      SKIP_AWS_SDK("GCC VERSION too old (${GCC_VERSION}, required is 4.8 or later")
+    ENDIF()
+  ELSEIF (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    IF ((CMAKE_CXX_COMPILER_VERSION AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS  3.3) OR
+        (CLANG_VERSION_STRING AND CLANG_VERSION_STRING VERSION_LESS  3.3))
+      SKIP_AWS_SDK("Clang version too old, required is 3.3 or later")
+    ENDIF()
+  ELSEIF(MSVC)
+    IF (MSVC_VERSION LESS 1800)
+      SKIP_AWS_SDK("MSVC version too old, required is VS2015 or later")
+    ENDIF()
+  ELSE()
+    SKIP_AWS_SDK("Unsupported compiler")
+  ENDIF()
+
+  # Check OS support
+  IF (NOT(WIN32 OR APPLE  OR (CMAKE_SYSTEM_NAME MATCHES "Linux")))
+    SKIP_AWS_SDK("OS unsupported by AWS SDK")
+  ENDIF()
+
+  # Build from source, using ExternalProject_Add
+  # AWS C++ SDK requires cmake 2.8.12
+  IF(CMAKE_VERSION VERSION_LESS "2.8.12")
+    SKIP_AWS_SDK("CMake is too old")
+  ENDIF()
+
+  IF(UNIX)
+    # Check librairies required for building SDK
+    FIND_PACKAGE(CURL)
+    SET_PACKAGE_PROPERTIES(CURL PROPERTIES TYPE REQUIRED)
+    IF(NOT CURL_FOUND)
+      SKIP_AWS_SDK("AWS C++ SDK requires libcurl development package")
+    ENDIF()
+    FIND_PATH(UUID_INCLUDE_DIR uuid/uuid.h)
+    IF(NOT UUID_INCLUDE_DIR)
+      SKIP_AWS_SDK("AWS C++ SDK requires uuid development package")
+    ENDIF()
+    IF(NOT APPLE)
+      FIND_LIBRARY(UUID_LIBRARIES uuid)
+      SET_PACKAGE_PROPERTIES(UUID_LIBRARIES PROPERTIES TYPE REQUIRED)
+      IF(NOT UUID_LIBRARIES)
+        SKIP_AWS_SDK("AWS C++ SDK requires uuid development package")
+      ENDIF()
+      FIND_PACKAGE(OpenSSL)
+      SET_PACKAGE_PROPERTIES(OpenSSL PROPERTIES TYPE REQUIRED)
+      IF(NOT OPENSSL_FOUND)
+        SKIP_AWS_SDK("AWS C++ SDK requires openssl development package")
+      ENDIF()
+    ENDIF()
+  ENDIF()
+  SET(${RETVAL} ON PARENT_SCOPE)
+ENDFUNCTION()
+
+
+# USE_AWS_SDK_LIBS(target sdk_component1 ... sdk_component_N)
+# Example usage
+# USE_AWS_SDK_LIBS(aws_key_management kms s3)
+FUNCTION(USE_AWS_SDK_LIBS)
+  SET(SDK_COMPONENTS ${ARGN})
+  LIST(GET SDK_COMPONENTS 0 target)
+  IF(NOT TARGET ${target})
+    MESSAGE(FATAL_ERROR "${target} is not a valid target")
+  ENDIF()
+  SET(NON_DISTRIBUTABLE_WARNING "Apache 2.0" CACHE INTERNAL "")
+  LIST(REMOVE_AT SDK_COMPONENTS 0)
+  FOREACH(comp ${SDK_COMPONENTS})
+    SET_PROPERTY(GLOBAL PROPERTY AWS_SDK_LIBS ${comp} APPEND)
+    TARGET_LINK_LIBRARIES(${target} aws-cpp-sdk-${comp})
+  ENDFOREACH()
+  TARGET_LINK_LIBRARIES(${target} aws-cpp-sdk-core)
+  TARGET_INCLUDE_DIRECTORIES(${target} PRIVATE ${PROJECT_BINARY_DIR}/extra/aws_sdk/aws_sdk_cpp/include)
+  # Link OS libraries that AWS SDK depends on
+  IF(WIN32)
+    TARGET_LINK_LIBRARIES(${target} bcrypt winhttp wininet userenv version)
+  ELSE()
+    FIND_PACKAGE(CURL REQUIRED)
+    FIND_PACKAGE(OpenSSL REQUIRED)
+    TARGET_LINK_LIBRARIES(${target} ${OPENSSL_LIBRARIES} ${CURL_LIBRARIES} ${UUID_LIBRARIES})
+  ENDIF()
+ENDFUNCTION()