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# 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.
# Set the CMP0116 policy
if(POLICY CMP0116)
cmake_policy(SET CMP0116 NEW)
endif()
##############################################################################
# API
##############################################################################
function(vpp_generate_api_c_header file)
set (output_name ${CMAKE_CURRENT_BINARY_DIR}/${file}.h)
set (dependency_file ${CMAKE_CURRENT_BINARY_DIR}/${file}.d)
get_filename_component(output_dir ${output_name} DIRECTORY)
if(NOT VPP_APIGEN)
set(VPP_APIGEN ${CMAKE_SOURCE_DIR}/tools/vppapigen/vppapigen)
set(VPPAPIGEN_SUBMODULES
${CMAKE_SOURCE_DIR}/tools/vppapigen/vppapigen_c.py
${CMAKE_SOURCE_DIR}/tools/vppapigen/vppapigen_json.py
)
endif()
if (VPP_INCLUDE_DIR)
set(includedir "--includedir" ${VPP_INCLUDE_DIR})
endif()
set(OUTPUT_HEADERS
"${CMAKE_CURRENT_BINARY_DIR}/${file}.h"
"${CMAKE_CURRENT_BINARY_DIR}/${file}_fromjson.h"
"${CMAKE_CURRENT_BINARY_DIR}/${file}_tojson.h"
"${CMAKE_CURRENT_BINARY_DIR}/${file}_enum.h"
"${CMAKE_CURRENT_BINARY_DIR}/${file}_types.h"
"${CMAKE_CURRENT_BINARY_DIR}/${file}.c"
"${CMAKE_CURRENT_BINARY_DIR}/${file}_test.c"
"${CMAKE_CURRENT_BINARY_DIR}/${file}_test2.c"
)
get_filename_component(barename ${file} NAME)
# Define a variable for common apigen arguments
set(COMMON_ARGS
OUTPUT ${OUTPUT_HEADERS}
COMMAND mkdir -p ${output_dir}
COMMAND ${PYENV} ${VPP_APIGEN}
ARGS ${includedir} --includedir ${CMAKE_SOURCE_DIR} --input ${CMAKE_CURRENT_SOURCE_DIR}/${file} --outputdir ${output_dir} --output ${output_name} -MF ${dependency_file}
DEPENDS ${VPP_APIGEN} ${CMAKE_CURRENT_SOURCE_DIR}/${file} ${VPPAPIGEN_SUBMODULES}
COMMENT "Generating API header ${output_name}"
)
if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.20")
add_custom_command (
${COMMON_ARGS}
DEPFILE ${dependency_file}
)
else()
message(WARNING "Your CMake version does not support DEPFILE. Consider upgrading to CMake 3.20 or later for improved dependency handling.")
add_custom_command (
${COMMON_ARGS}
)
endif()
set(t ${barename}_deps)
if (NOT TARGET ${t})
add_custom_target(${t} ALL DEPENDS ${OUTPUT_HEADERS})
add_dependencies(api_headers ${t})
endif()
endfunction()
function(vpp_generate_api_json_header file dir component)
set (output_name ${CMAKE_CURRENT_BINARY_DIR}/${file}.json)
get_filename_component(output_dir ${output_name} DIRECTORY)
if(NOT VPP_APIGEN)
set(VPP_APIGEN ${CMAKE_SOURCE_DIR}/tools/vppapigen/vppapigen)
endif()
if (VPP_INCLUDE_DIR)
set(includedir "--includedir" ${VPP_INCLUDE_DIR})
endif()
add_custom_command (OUTPUT ${output_name}
COMMAND mkdir -p ${output_dir}
COMMAND ${PYENV} ${VPP_APIGEN}
ARGS ${includedir} --includedir ${CMAKE_SOURCE_DIR} --input ${CMAKE_CURRENT_SOURCE_DIR}/${file} JSON --outputdir ${output_dir} --output ${output_name}
DEPENDS ${VPP_APIGEN} ${CMAKE_CURRENT_SOURCE_DIR}/${file}
COMMENT "Generating API header ${output_name}"
)
install(
FILES ${output_name}
DESTINATION ${CMAKE_INSTALL_DATADIR}/vpp/api/${dir}/
COMPONENT ${component}
)
endfunction()
##############################################################################
# VPP-API
##############################################################################
function(vpp_generate_vapi_c_header f)
get_filename_component(output ${f}.vapi.h NAME)
set (output_name ${VPP_BINARY_DIR}/vpp-api/vapi/${output})
if(NOT VPP_VAPI_C_GEN)
set(VPP_VAPI_C_GEN ${CMAKE_SOURCE_DIR}/vpp-api/vapi/vapi_c_gen.py)
set(VPP_VAPI_C_GEN_DEPENDS
${CMAKE_SOURCE_DIR}/vpp-api/vapi/vapi_c_gen.py
${CMAKE_SOURCE_DIR}/vpp-api/vapi/vapi_json_parser.py
)
endif()
# C VAPI Headers
set(input ${CMAKE_CURRENT_BINARY_DIR}/${f}.json)
add_custom_command(
OUTPUT ${output_name}
WORKING_DIRECTORY ${VPP_BINARY_DIR}/vpp-api/vapi
COMMAND ${PYENV} ${VPP_VAPI_C_GEN}
ARGS --remove-path ${input}
DEPENDS ${input} ${VPP_VAPI_C_GEN_DEPENDS}
COMMENT "Generating VAPI C header ${output_name}"
)
install(
FILES ${output_name}
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/vapi
COMPONENT vpp-dev
)
endfunction ()
function (vpp_generate_vapi_cpp_header f)
get_filename_component(output ${f}.vapi.hpp NAME)
set (output_name ${VPP_BINARY_DIR}/vpp-api/vapi/${output})
if(NOT VPP_VAPI_CPP_GEN)
set(VPP_VAPI_CPP_GEN ${CMAKE_SOURCE_DIR}/vpp-api/vapi/vapi_cpp_gen.py)
set(VPP_VAPI_CPP_GEN_DEPENDS
${CMAKE_SOURCE_DIR}/vpp-api/vapi/vapi_cpp_gen.py
${CMAKE_SOURCE_DIR}/vpp-api/vapi/vapi_json_parser.py
)
endif()
# C++ VAPI Headers
set(input ${CMAKE_CURRENT_BINARY_DIR}/${f}.json)
add_custom_command(
OUTPUT ${output_name}
WORKING_DIRECTORY ${VPP_BINARY_DIR}/vpp-api/vapi
COMMAND ${PYENV} ${VPP_VAPI_CPP_GEN}
ARGS --gen-h-prefix=vapi --remove-path ${input}
DEPENDS ${input} ${VPP_VAPI_CPP_GEN_DEPENDS}
COMMENT "Generating VAPI C++ header ${output_name}"
)
install(
FILES ${output_name}
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/vapi
COMPONENT vpp-dev
)
endfunction ()
##############################################################################
# generate the .h and .json files for a .api file
# @param file - the name of the .api
# @param dir - the install directory under ROOT/share/vpp/api to place the
# generated .json file
##############################################################################
function(vpp_generate_api_header file dir component)
vpp_generate_api_c_header (${file})
vpp_generate_api_json_header (${file} ${dir} ${component})
vpp_generate_vapi_c_header (${file})
vpp_generate_vapi_cpp_header (${file})
endfunction()
function(vpp_add_api_files name dir component)
unset(header_files)
set(target ${name}_api_headers)
file(RELATIVE_PATH rpath ${CMAKE_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
foreach(file ${ARGN})
vpp_generate_api_header (${file} ${dir} ${component})
# Basic api headers get installed in a subdirectory according to
# their component name, but vapi is expected to be found directly under
# "vapi". Both by in-source components (e.g. vpp-api/vapi/vapi.c), and
# out-of-tree plugins use #include <vapi/component.api.vapi.h>.
# ${file} contains the subdirectory, so strip it here.
file(MAKE_DIRECTORY ${VPP_BINARY_DIR}/vpp-api/vapi)
get_filename_component(name ${file} NAME)
list(APPEND header_files
${file}.h
${file}_enum.h
${file}_types.h
${file}.json
${VPP_BINARY_DIR}/vpp-api/vapi/${name}.vapi.h
${VPP_BINARY_DIR}/vpp-api/vapi/${name}.vapi.hpp
)
endforeach()
add_custom_target(${target} DEPENDS ${header_files})
add_dependencies(api_headers ${target})
endfunction()
add_custom_target(api_headers
DEPENDS vlibmemory_api_headers vnet_api_headers vpp_api_headers vlib_api_headers
)
add_custom_target(vapi_headers
)
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