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cmake_minimum_required(VERSION 3.0)

project(pigpio LANGUAGES C VERSION 0.71)

list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/cmake)

find_package(Threads REQUIRED)
find_package(RT REQUIRED)

option(BUILD_SHARED_LIBS "Create shared libraries" ON)

add_compile_options(-Wall)

# libpigpio.(so|a)
add_library(pigpio pigpio.c command.c custom.cext)

# libpigpiod_if.(so|a)
add_library(pigpiod_if pigpiod_if.c command.c)

# libpigpiod_if2.(so|a)
add_library(pigpiod_if2 pigpiod_if2.c command.c)

# x_pigpio
add_executable(x_pigpio x_pigpio.c)
target_link_libraries(x_pigpio pigpio RT::RT Threads::Threads)

# x_pigpiod_if
add_executable(x_pigpiod_if x_pigpiod_if.c)
target_link_libraries(x_pigpiod_if pigpiod_if RT::RT Threads::Threads)

# x_pigpiod_if2
add_executable(x_pigpiod_if2 x_pigpiod_if2.c)
target_link_libraries(x_pigpiod_if2 pigpiod_if2 RT::RT Threads::Threads)

# pigpiod
add_executable(pigpiod pigpiod.c)
target_link_libraries(pigpiod pigpio RT::RT Threads::Threads)

# pigs
add_executable(pigs pigs.c command.c)
target_link_libraries(pigs Threads::Threads)

# pig2vcd
add_executable(pig2vcd pig2vcd.c command.c)
target_link_libraries(pig2vcd Threads::Threads)

# Configure and install project

include (GenerateExportHeader)
include (CMakePackageConfigHelpers)

generate_export_header(${PROJECT_NAME})

install(TARGETS pigpio pigpiod_if pigpiod_if2 pig2vcd pigpiod pigs
    EXPORT ${PROJECT_NAME}Targets
	LIBRARY  DESTINATION lib
	ARCHIVE  DESTINATION lib
	RUNTIME  DESTINATION bin
	INCLUDES DESTINATION include
)

write_basic_package_version_file(
	"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
	VERSION ${${PROJECT_NAME}_VERSION}
	COMPATIBILITY AnyNewerVersion
)

export(EXPORT ${PROJECT_NAME}Targets
  FILE "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Targets.cmake"
  NAMESPACE pigpio::
)

set(ConfigPackageLocation lib/cmake/${PROJECT_NAME})
install(EXPORT ${PROJECT_NAME}Targets
  FILE
    ${PROJECT_NAME}Targets.cmake
  NAMESPACE
    pigpio::
  DESTINATION
    ${ConfigPackageLocation}
)

install(
  FILES
    ${CMAKE_CURRENT_LIST_DIR}/cmake/${PROJECT_NAME}Config.cmake
    "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
  DESTINATION
    ${ConfigPackageLocation}
)

install(FILES pigpio.h pigpiod_if.h pigpiod_if2.h
	DESTINATION include
	PERMISSIONS OWNER_READ OWNER_WRITE
		GROUP_READ
		WORLD_READ
)

file(GLOB man_1_SRC "*.1")
install(FILES ${man_1_SRC}
	DESTINATION man/man1
	PERMISSIONS OWNER_READ OWNER_WRITE
		GROUP_READ
		WORLD_READ
)

file(GLOB man_3_SRC "*.3")
install(FILES ${man_3_SRC}
	DESTINATION man/man3
	PERMISSIONS OWNER_READ OWNER_WRITE
		GROUP_READ
		WORLD_READ
)

# Install python modules.
find_package(Python COMPONENTS Interpreter QUIET)

if(Python_FOUND)
	configure_file(${CMAKE_CURRENT_LIST_DIR}/cmake/setup.py.in
		${CMAKE_CURRENT_BINARY_DIR}/setup.py
	)

	install(CODE "execute_process(COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/setup.py install)")
endif()

# package project

include (CPack)