cmake: move functions to src/cmake

Change-Id: Ibcb7105fa7e3c09efdce01bccd4de235fe33ea99
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/src/cmake/api.cmake b/src/cmake/api.cmake
new file mode 100644
index 00000000000..644e80b8270
--- /dev/null
+++ b/src/cmake/api.cmake
@@ -0,0 +1,65 @@
+# 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.
+
+##############################################################################
+# API
+##############################################################################
+function(vpp_generate_api_c_header file)
+  set (output_name ${CMAKE_CURRENT_BINARY_DIR}/${file}.h)
+  get_filename_component(output_dir ${output_name} DIRECTORY)
+  add_custom_command (OUTPUT ${output_name}
+    COMMAND mkdir -p ${output_dir}
+    COMMAND ${CMAKE_SOURCE_DIR}/tools/vppapigen/vppapigen
+    ARGS --includedir ${CMAKE_SOURCE_DIR} --input ${CMAKE_CURRENT_SOURCE_DIR}/${file} --output ${output_name}
+    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${file}
+    COMMENT "Generating API header ${output_name}"
+  )
+endfunction()
+
+function(vpp_generate_api_json_header file dir)
+  set (output_name ${CMAKE_CURRENT_BINARY_DIR}/${file}.json)
+  get_filename_component(output_dir ${output_name} DIRECTORY)
+  add_custom_command (OUTPUT ${output_name}
+    COMMAND mkdir -p ${output_dir}
+    COMMAND ${CMAKE_SOURCE_DIR}/tools/vppapigen/vppapigen
+    ARGS --includedir ${CMAKE_SOURCE_DIR} --input ${CMAKE_CURRENT_SOURCE_DIR}/${file} JSON --output ${output_name}
+    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${file}
+    COMMENT "Generating API header ${output_name}"
+  )
+  install(FILES ${output_name} DESTINATION share/vpp/api/${dir}/)
+endfunction()
+
+##############################################################################
+# generate the .h and .json files for a .api file
+#  @param file - the name of the .api
+#  @param dir  - the install directory under ROOT/share/vpp/api to place the
+#                generated .json file
+##############################################################################
+function(vpp_generate_api_header file dir)
+    vpp_generate_api_c_header (${file})
+    vpp_generate_api_json_header (${file} ${dir})
+endfunction()
+
+function(vpp_add_api_files target)
+  unset(header_files)
+  foreach(file ${ARGN})
+    vpp_generate_api_header (${file} core)
+    list (APPEND header_files ${file}.h ${file}.json)
+  endforeach()
+  add_custom_target(${target} DEPENDS ${header_files})
+endfunction()
+
+add_custom_target(api_headers
+  DEPENDS vlibmemory_api_headers vnet_api_headers vpp_api_headers
+)
+