incubator-nuttx/cmake/nuttx_export_header.cmake

136 lines
5.0 KiB
CMake

# ##############################################################################
# cmake/nuttx_export_header.cmake
#
# Licensed to the Apache Software Foundation (ASF) under one or more contributor
# license agreements. See the NOTICE file distributed with this work for
# additional information regarding copyright ownership. The ASF licenses this
# file to you 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(nuttx_parse_function_args)
# export_relative_path_recursively
#
# Used to recursively add all header files under the `include_directory` to the
# `include_path` directory and preserve their relative relationship
#
# When the target relative path is repeated and the original path is different
# throws an exception and abort the build
function(export_relative_path_recursively include_path export_path
include_directory)
# recursively find header files under the path
file(GLOB_RECURSE FOUND_FILES ${include_directory}/*.h)
if(FOUND_FILES)
foreach(FOUND_FILE ${FOUND_FILES})
if(EXISTS ${FOUND_FILE})
# take relative path
file(RELATIVE_PATH REL_FILE ${include_directory} ${FOUND_FILE})
# check for path conflicts
string(REPLACE "/" "_" CHECK_PROP _check_${prefix}_${REL_FILE})
get_property(REL_FILE_CHECK GLOBAL PROPERTY ${CHECK_PROP})
if(REL_FILE_CHECK AND NOT REL_FILE_CHECK STREQUAL FOUND_FILE)
message(
FATAL_ERROR
"Error: NUTTX_ADD_APPS_HEADER add a duplicate header files ${FOUND_FILE} ${REL_FILE_CHECK}"
)
endif()
set_property(GLOBAL PROPERTY ${CHECK_PROP} ${FOUND_FILE})
message(
VERBOSE
"NUTTX_ADD_APPS_HEADER: REL_FILE found: ${REL_FILE} in ${INCDIR}")
# create symbolic link for origin
file(CREATE_LINK ${FOUND_FILE} ${include_path}/${REL_FILE}
COPY_ON_ERROR SYMBOLIC)
# do export to the BINAPPS/include directory
get_filename_component(DES_PATH ${export_path}/${REL_FILE} DIRECTORY)
install(FILES ${FOUND_FILE} DESTINATION ${DES_PATH})
endif()
endforeach()
endif()
endfunction()
# ~~~
# nuttx_export_header
#
# Description:
# Export include directory to apps global include path.
# `${NUTTX_APPS_BINDIR}/include/${TARGET}`
# preserve relative paths to all header files.
#
# In the original GNU Make build, we use `Make.defs` to add the global include path,
# and the private include path of the application library is written in the `Makefile`
# In Nuttx CMake build, we achieve similar global functionality through this function.
#
# Usage:
# nuttx_export_header(TARGET <string> INCLUDE_DIRECTORIES <list>)
#
# Parameters:
# TARGET : target for exporting header directory
# INCLUDE_DIRECTORIES : directory list to be exported
#
# Example:
# set(INCDIRS foo/include)
# nuttx_export_header(TARGET foo INCLUDE_DIRECTORIES ${INCDIRS})
#
# foo/include/ build/apps/include/foo/
# ├── demo/ ├── demo/
# | └── demo.h cmake --build:origin link | └── demo.h
# ├── test/ =====================> ├── test/
# | └── test.h cmake --install:export | └── test.h
# └── foo.h └── foo.h
# ~~~
function(nuttx_export_header)
# parse arguments into variables
nuttx_parse_function_args(
FUNC
nuttx_export_header
ONE_VALUE
TARGET
MULTI_VALUE
INCLUDE_DIRECTORIES
REQUIRED
TARGET
INCLUDE_DIRECTORIES
ARGN
${ARGN})
# destination directory to be exported by install
set(EXPORT_PATH_PREFIX ${CMAKE_BINARY_DIR}/staging/include/${TARGET})
# destination directory origin compile
set(INCLUDE_PATH_PREFIX ${NUTTX_APPS_BINDIR}/include/${TARGET})
foreach(INCDIR ${INCLUDE_DIRECTORIES})
if(NOT EXISTS ${INCDIR})
message(
WARNING
"warning: NUTTX_EXPORT_HEADER ${TARGET} added a path that does not exist ${INCDIR}"
)
else()
if(IS_DIRECTORY ${INCDIR})
# export relative path to directories
export_relative_path_recursively(${INCLUDE_PATH_PREFIX}
${EXPORT_PATH_PREFIX} ${INCDIR})
else()
# export single file
file(CREATE_LINK ${INCDIR} ${INCLUDE_PATH_PREFIX}/${INCDIR}
COPY_ON_ERROR SYMBOLIC)
install(FILES ${INCDIR} DESTINATION ${EXPORT_PATH_PREFIX})
endif()
endif()
endforeach()
endfunction()