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cmake_minimum_required(VERSION 2.8.12)
project(nanopb C)
set(nanopb_VERSION_STRING nanopb-0.3.9.1)
string(REPLACE "nanopb-" "" nanopb_VERSION ${nanopb_VERSION_STRING})
option(nanopb_BUILD_RUNTIME "Build the headers and libraries needed at runtime" ON)
option(nanopb_BUILD_GENERATOR "Build the protoc plugin for code generation" ON)
option(nanopb_MSVC_STATIC_RUNTIME "Link static runtime libraries" ON)
if(NOT DEFINED nanopb_PROTOC_PATH)
set(nanopb_PROTOC_PATH "protoc")
endif()
if(NOT DEFINED CMAKE_DEBUG_POSTFIX)
set(CMAKE_DEBUG_POSTFIX "d")
endif()
include(GNUInstallDirs)
if(MSVC AND nanopb_MSVC_STATIC_RUNTIME)
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${flag_var} MATCHES "/MD")
string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}")
endif(${flag_var} MATCHES "/MD")
endforeach(flag_var)
endif()
if(NOT DEFINED CMAKE_INSTALL_CMAKEDIR)
set(CMAKE_INSTALL_CMAKEDIR "lib/cmake/nanopb")
endif()
if(nanopb_BUILD_GENERATOR)
set(generator_protos nanopb plugin)
find_package(PythonInterp 2.7 REQUIRED)
execute_process(
COMMAND ${PYTHON_EXECUTABLE} -c
"from distutils import sysconfig; print(sysconfig.get_python_lib(prefix=''))"
OUTPUT_VARIABLE PYTHON_INSTDIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
foreach(generator_proto IN LISTS generator_protos)
string(REGEX REPLACE "([^;]+)" "${PROJECT_SOURCE_DIR}/generator/proto/\\1.proto" generator_proto_file "${generator_proto}")
string(REGEX REPLACE "([^;]+)" "\\1_pb2.py" generator_proto_py_file "${generator_proto}")
add_custom_command(
OUTPUT ${generator_proto_py_file}
COMMAND ${nanopb_PROTOC_PATH} --python_out=${PROJECT_BINARY_DIR} -I${PROJECT_SOURCE_DIR}/generator/proto ${generator_proto_file}
DEPENDS ${generator_proto_file}
)
add_custom_target("generate_${generator_proto_py_file}" ALL DEPENDS ${generator_proto_py_file})
install(
FILES ${PROJECT_BINARY_DIR}/${generator_proto_py_file}
DESTINATION ${PYTHON_INSTDIR}
)
endforeach()
endif()
if(nanopb_BUILD_RUNTIME)
add_library(protobuf-nanopb STATIC
pb.h
pb_common.h
pb_common.c
pb_encode.h
pb_encode.c
pb_decode.h
pb_decode.c)
target_include_directories(protobuf-nanopb INTERFACE
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
configure_file(extra/nanopb-config-version.cmake.in
nanopb-config-version.cmake @ONLY)
install(TARGETS protobuf-nanopb EXPORT nanopb-targets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
install(EXPORT nanopb-targets
DESTINATION ${CMAKE_INSTALL_CMAKEDIR}
NAMESPACE nanopb::)
install(FILES extra/nanopb-config.cmake
${CMAKE_CURRENT_BINARY_DIR}/nanopb-config-version.cmake
DESTINATION ${CMAKE_INSTALL_CMAKEDIR})
install(FILES pb.h pb_common.h pb_encode.h pb_decode.h
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
endif()
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