blob: db0846ddd5c88279a395ce08fda54c4ad850be24 [file] [log] [blame]
cmake_minimum_required(VERSION 3.14.0)
project(nanopb C)
set(nanopb_VERSION_STRING nanopb-0.4.9-dev)
set(nanopb_SOVERSION 0)
string(REPLACE "nanopb-" "" nanopb_VERSION ${nanopb_VERSION_STRING})
option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
option(BUILD_STATIC_LIBS "Build static libraries" ON)
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)
set(nanopb_PYTHON_INSTDIR_OVERRIDE "" CACHE PATH "Override the default python installation directory with the given path")
find_program(nanopb_PROTOC_PATH protoc PATHS generator-bin generator NO_DEFAULT_PATH)
find_program(nanopb_PROTOC_PATH protoc)
if(NOT EXISTS ${nanopb_PROTOC_PATH})
message(FATAL_ERROR "protoc compiler not found")
endif()
if(NOT DEFINED CMAKE_DEBUG_POSTFIX)
set(CMAKE_DEBUG_POSTFIX "d")
endif()
include(GNUInstallDirs)
if(MSVC AND nanopb_MSVC_STATIC_RUNTIME)
foreach(flag_var
CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
if(${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 "${CMAKE_INSTALL_LIBDIR}/cmake/nanopb")
endif()
# Determine Python module installation path
if (NOT nanopb_PYTHON_INSTDIR_OVERRIDE)
find_package(Python REQUIRED COMPONENTS Interpreter)
file(TO_CMAKE_PATH "${Python_SITELIB}" PYTHON_INSTDIR)
else()
set(PYTHON_INSTDIR ${nanopb_PYTHON_INSTDIR_OVERRIDE})
endif()
message(STATUS "Python install dir: ${PYTHON_INSTDIR}")
# Package nanopb generator as Python module 'nanopb'
if(nanopb_BUILD_GENERATOR)
# Copy Python code files related to the generator
add_custom_target(nanopb_generator ALL
COMMAND ${CMAKE_COMMAND} -E make_directory
${PROJECT_BINARY_DIR}/nanopb/generator/proto
COMMAND ${CMAKE_COMMAND} -E copy_if_different
${PROJECT_SOURCE_DIR}/generator/proto/_utils.py
${PROJECT_SOURCE_DIR}/generator/proto/__init__.py
${PROJECT_SOURCE_DIR}/generator/proto/nanopb.proto
${PROJECT_BINARY_DIR}/nanopb/generator/proto
COMMAND ${CMAKE_COMMAND} -E copy_if_different
${PROJECT_SOURCE_DIR}/generator/nanopb_generator.py
${PROJECT_SOURCE_DIR}/generator/__init__.py
${PROJECT_BINARY_DIR}/nanopb/generator
COMMAND ${CMAKE_COMMAND} -E copy_if_different
${PROJECT_SOURCE_DIR}/generator/__init__.py
${PROJECT_BINARY_DIR}/nanopb
COMMAND ${nanopb_PROTOC_PATH}
--python_out=${PROJECT_BINARY_DIR}/nanopb/generator/proto
-I${PROJECT_SOURCE_DIR}/generator/proto
${PROJECT_SOURCE_DIR}/generator/proto/nanopb.proto
)
# Install Python module files
install(
DIRECTORY ${PROJECT_BINARY_DIR}/nanopb
DESTINATION ${PYTHON_INSTDIR}
FILES_MATCHING
PATTERN *.py
PATTERN *.proto
PATTERN __pycache__ EXCLUDE
)
# Generate a wrapper script that calls nanopb.generator Python module when invoked
configure_file(
extra/script_wrappers/nanopb_generator.py.in
${PROJECT_BINARY_DIR}/nanopb_generator.py
)
install(
PROGRAMS ${PROJECT_BINARY_DIR}/nanopb_generator.py
DESTINATION ${CMAKE_INSTALL_BINDIR}
)
# Install shell/bat script wrappers for invoking nanopb_generator.py.
# protoc-gen-nanopb is automatically used by protoc when --nanopb_out= option is used.
if(WIN32)
# Include the full path to Python executable in Windows .bat scripts, as it is not in PATH on all systems
file(READ generator/protoc-gen-nanopb.bat FILE_CONTENTS)
string(REPLACE "python" ${Python_EXECUTABLE} FILE_CONTENTS "${FILE_CONTENTS}")
file(WRITE ${PROJECT_BINARY_DIR}/protoc-gen-nanopb.bat "${FILE_CONTENTS}")
file(READ generator/nanopb_generator.bat FILE_CONTENTS)
string(REPLACE "python" ${Python_EXECUTABLE} FILE_CONTENTS "${FILE_CONTENTS}")
file(WRITE ${PROJECT_BINARY_DIR}/nanopb_generator.bat "${FILE_CONTENTS}")
install(
PROGRAMS
${PROJECT_BINARY_DIR}/protoc-gen-nanopb.bat
${PROJECT_BINARY_DIR}/nanopb_generator.bat
DESTINATION ${CMAKE_INSTALL_BINDIR}
)
else()
# Linux/Mac scripts currently use python3 from PATH
install(
PROGRAMS
generator/protoc-gen-nanopb
generator/nanopb_generator
DESTINATION ${CMAKE_INSTALL_BINDIR}
)
endif()
endif()
if(nanopb_BUILD_RUNTIME)
if(BUILD_SHARED_LIBS)
add_library(protobuf-nanopb SHARED
pb.h
pb_common.h
pb_common.c
pb_encode.h
pb_encode.c
pb_decode.h
pb_decode.c)
set_target_properties(protobuf-nanopb PROPERTIES
SOVERSION ${nanopb_SOVERSION})
install(TARGETS protobuf-nanopb EXPORT nanopb-targets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
target_include_directories(protobuf-nanopb INTERFACE
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/nanopb>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
)
endif()
if(BUILD_STATIC_LIBS)
add_library(protobuf-nanopb-static STATIC
pb.h
pb_common.h
pb_common.c
pb_encode.h
pb_encode.c
pb_decode.h
pb_decode.c)
set_target_properties(protobuf-nanopb-static PROPERTIES
OUTPUT_NAME protobuf-nanopb)
install(TARGETS protobuf-nanopb-static EXPORT nanopb-targets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
target_include_directories(protobuf-nanopb-static INTERFACE
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/nanopb>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
)
endif()
configure_file(extra/nanopb-config-version.cmake.in
nanopb-config-version.cmake @ONLY)
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}/nanopb)
endif()