cmake: add vapi build

Change-Id: Id939a0cbe35601478ad262f49bb0a1abdb62aa45
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vpp-api/vapi/CMakeLists.txt b/src/vpp-api/vapi/CMakeLists.txt
new file mode 100644
index 0000000..8feb12e
--- /dev/null
+++ b/src/vpp-api/vapi/CMakeLists.txt
@@ -0,0 +1,75 @@
+# Copyright (c) 2018 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+include_directories (
+  ${CMAKE_CURRENT_SOURCE_DIR}/..
+  ${CMAKE_CURRENT_BINARY_DIR}/..
+)
+
+unset(VAPICLIENT_API_C_HEADERS)
+unset(VAPICLIENT_API_CPP_HEADERS)
+
+get_property(VPP_API_FILES GLOBAL PROPERTY VPP_API_FILES)
+foreach(f ${VPP_API_FILES})
+  get_filename_component(output ${f}.vapi.h NAME)
+  set(input ${CMAKE_BINARY_DIR}/${f}.json)
+
+  # C VAPI Headers
+  add_custom_command(
+    OUTPUT ${output}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/vapi_c_gen.py
+    ARGS --remove-path ${input}
+    DEPENDS ${input} vapi_c_gen.py vapi_json_parser.py
+    COMMENT "Generating VAPI C header ${output}"
+  )
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${output} DESTINATION include/vapi)
+  list(APPEND VAPICLIENT_API_CPP_HEADERS ${output})
+
+  # C++ VAPI Headers
+  get_filename_component(output ${f}.vapi.hpp NAME)
+  add_custom_command(
+    OUTPUT ${output}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/vapi_cpp_gen.py
+    ARGS --remove-path ${input}
+    DEPENDS ${input} vapi_cpp_gen.py vapi_json_parser.py
+    COMMENT "Generating VAPI C++ header ${output}"
+  )
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${output} DESTINATION include/vapi)
+  list(APPEND VAPICLIENT_API_CPP_HEADERS ${output})
+endforeach ()
+
+add_custom_target(all-vapi-headers ALL DEPENDS
+  ${VAPICLIENT_API_C_HEADERS}
+  ${VAPICLIENT_API_CPP_HEADERS}
+)
+
+add_vpp_library(vapiclient
+  SOURCES
+  vapi.c
+  libvapiclient.map
+
+  LINK_LIBRARIES vppinfra vlibmemoryclient svm pthread m rt
+)
+
+install(
+  FILES
+  vapi.h
+  vapi_common.h
+  vapi_dbg.h
+  vapi.hpp
+  vapi_internal.h
+
+  DESTINATION include/vapi
+)