CMakeLists.txt - github/CESNET/libnetconf2 - Gitiles

 cmake_minimum_required(VERSION 2.6)

 project(libnetconf2 C)
 set(LIBNETCONF2_DESC "NETCONF library in C providing API for both clients and servers.")

 # include custom Modules
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMakeModules/")

 include(GNUInstallDirs)
 include(CheckFunctionExists)
 include(CheckCSourceCompiles)
 include(CheckIncludeFile)
 include(UseCompat)

 if(POLICY CMP0075)
     cmake_policy(SET CMP0075 NEW)
 endif()

 set(LIBNETCONF2_DESCRIPTION "NETCONF server and client library in C.")

 # check the supported platform
 if(NOT UNIX)
     message(FATAL_ERROR "Only *nix like systems are supported.")
 endif()

 # osx specific
 set(CMAKE_MACOSX_RPATH TRUE)

 # set default build type if not specified by user
 if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE Debug)
 endif()

 add_compile_options(-Wall -Wextra -fvisibility=hidden -std=gnu99)
 set(CMAKE_C_FLAGS_PACKAGE "-g -O2 -DNDEBUG")

 # Version of the project
 # Generic version of not only the library. Major version is reserved for really big changes of the project,
 # minor version changes with added functionality (new tool, functionality of the tool or library, ...) and
 # micro version is changed with a set of small changes or bugfixes anywhere in the project.
 set(LIBNETCONF2_MAJOR_VERSION 1)
 set(LIBNETCONF2_MINOR_VERSION 1)
 set(LIBNETCONF2_MICRO_VERSION 32)
 set(LIBNETCONF2_VERSION ${LIBNETCONF2_MAJOR_VERSION}.${LIBNETCONF2_MINOR_VERSION}.${LIBNETCONF2_MICRO_VERSION})

 # Version of the library
 # Major version is changed with every backward non-compatible API/ABI change in libyang, minor version changes
 # with backward compatible change and micro version is connected with any internal change of the library.
 set(LIBNETCONF2_MAJOR_SOVERSION 1)
 set(LIBNETCONF2_MINOR_SOVERSION 3)
 set(LIBNETCONF2_MICRO_SOVERSION 12)
 set(LIBNETCONF2_SOVERSION_FULL ${LIBNETCONF2_MAJOR_SOVERSION}.${LIBNETCONF2_MINOR_SOVERSION}.${LIBNETCONF2_MICRO_SOVERSION})
 set(LIBNETCONF2_SOVERSION ${LIBNETCONF2_MAJOR_SOVERSION})

 # libyang SO version required
 set(LIBYANG_DEP_SOVERSION_MAJOR 1)

 # build options
 option(ENABLE_SSH "Enable NETCONF over SSH support (via libssh)" ON)
 option(ENABLE_TLS "Enable NETCONF over TLS support (via OpenSSL)" ON)
 option(ENABLE_DNSSEC "Enable support for SSHFP retrieval using DNSSEC for SSH (requires OpenSSL and libval)" OFF)
 option(ENABLE_PYTHON "Include bindings for Python 3" OFF)
 set(READ_INACTIVE_TIMEOUT 20 CACHE STRING "Maximum number of seconds waiting for new data once some data have arrived")
 set(READ_ACTIVE_TIMEOUT 300 CACHE STRING "Maximum number of seconds for receiving a full message")
 set(MAX_PSPOLL_THREAD_COUNT 6 CACHE STRING "Maximum number of threads that could simultaneously access a ps_poll structure")
 set(TIMEOUT_STEP 100 CACHE STRING "Number of microseconds tasks are repeated until timeout elapses")
 set(YANG_MODULE_DIR "${CMAKE_INSTALL_PREFIX}/share/yang/modules" CACHE STRING "Directory with common YANG modules")

 if(ENABLE_DNSSEC AND NOT ENABLE_SSH)
     message(WARNING "DNSSEC SSHFP retrieval cannot be used without SSH support.")
     set(ENABLE_DNSSEC OFF)
 endif()

 include_directories(${PROJECT_BINARY_DIR}/src)

 # source files
 set(libsrc
     src/io.c
     src/log.c
     src/messages_client.c
     src/messages_server.c
     src/session.c
     src/session_client.c
     src/session_server.c
     src/time.c)

 if(ENABLE_SSH)
     list(APPEND libsrc
         src/session_client_ssh.c
         src/session_server_ssh.c)
     set(SSH_MACRO "#ifndef NC_ENABLED_SSH\n#define NC_ENABLED_SSH\n#endif")
 endif()

 if(ENABLE_TLS)
     list(APPEND libsrc
         src/session_client_tls.c
         src/session_server_tls.c)
     set(TLS_MACRO "#ifndef NC_ENABLED_TLS\n#define NC_ENABLED_TLS\n#endif")
 endif()

 set(headers
     ${PROJECT_BINARY_DIR}/src/config.h
     src/log.h
     src/netconf.h
     src/session.h
     src/messages_client.h
     src/messages_server.h
     src/session_client.h
     src/session_client_ch.h
     src/session_server.h
     src/session_server_ch.h)

 # use compat
 use_compat()

 # netconf2 target
 add_library(netconf2 SHARED ${libsrc} ${headers} $<TARGET_OBJECTS:compat>)
 set_target_properties(netconf2 PROPERTIES VERSION ${LIBNETCONF2_SOVERSION_FULL} SOVERSION ${LIBNETCONF2_SOVERSION})

 if((CMAKE_BUILD_TYPE STREQUAL Debug) OR (CMAKE_BUILD_TYPE STREQUAL Package))
     option(ENABLE_BUILD_TESTS "Build tests" ON)
     option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" ON)
 else()
     option(ENABLE_BUILD_TESTS "Build tests" OFF)
     option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" OFF)
 endif()

 # dependencies - pthread
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 find_package(Threads REQUIRED)
 target_link_libraries(netconf2 ${CMAKE_THREAD_LIBS_INIT})

 # check availability for some pthread functions
 set(CMAKE_REQUIRED_LIBRARIES pthread)
 check_include_file(stdatomic.h HAVE_STDATOMIC)
 check_function_exists(pthread_mutex_timedlock HAVE_PTHREAD_MUTEX_TIMEDLOCK)
 check_function_exists(pthread_rwlockattr_setkind_np HAVE_PTHREAD_RWLOCKATTR_SETKIND_NP)

 # dependencies - openssl
 if(ENABLE_TLS OR ENABLE_DNSSEC OR ENABLE_SSH)
     find_package(OpenSSL REQUIRED)
     if(ENABLE_TLS)
         message(STATUS "OPENSSL found, required for TLS")
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNC_ENABLED_TLS")
     endif()

     target_link_libraries(netconf2 ${OPENSSL_LIBRARIES})
     include_directories(${OPENSSL_INCLUDE_DIR})
 endif()

 # dependencies - libssh
 if(ENABLE_SSH)
     find_package(LibSSH 0.7.1 REQUIRED)
     if(LIBSSH_VERSION VERSION_EQUAL 0.9.3 OR LIBSSH_VERSION VERSION_EQUAL 0.9.4)
         message(FATAL_ERROR "LibSSH ${LIBSSH_VERSION} includes regression bugs and libnetconf2 will NOT work properly, try to use another version")
     endif()

     target_link_libraries(netconf2 ${LIBSSH_LIBRARIES})
     list(APPEND CMAKE_REQUIRED_LIBRARIES ${LIBSSH_LIBRARIES})
     include_directories(${LIBSSH_INCLUDE_DIRS})
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNC_ENABLED_SSH")

     # crypt
     if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "QNX")
         target_link_libraries(netconf2 -lcrypt)
         list(APPEND CMAKE_REQUIRED_LIBRARIES crypt)
     else()
         target_link_libraries(netconf2 -llogin)
         list(APPEND CMAKE_REQUIRED_LIBRARIES login)
     endif()
 endif()

 # dependencies - libval
 if(ENABLE_DNSSEC)
     find_package(LibVAL REQUIRED)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_DNSSEC")
     target_link_libraries(netconf2 ${LIBVAL_LIBRARIES})
     include_directories(${LIBVAL_INCLUDE_DIRS})
 endif()

 # dependencies - libyang
 find_package(LibYANG REQUIRED)
 target_link_libraries(netconf2 ${LIBYANG_LIBRARIES})
 include_directories(${LIBYANG_INCLUDE_DIRS})

 # header file compatibility - shadow.h and crypt.h
 check_include_file("shadow.h" HAVE_SHADOW)
 check_include_file("crypt.h" HAVE_CRYPT)

 # function compatibility - getpeereid on QNX
 if(${CMAKE_SYSTEM_NAME} MATCHES "QNX")
     target_link_libraries(netconf2 -lsocket)
     list(APPEND CMAKE_REQUIRED_LIBRARIES socket)
     list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES pthread)
     list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_QNX_SOURCE)
     check_symbol_exists(getpeereid "sys/types.h;unistd.h" HAVE_GETPEEREID)
     list(REMOVE_ITEM CMAKE_REQUIRED_DEFINITIONS -D_QNX_SOURCE)
 endif()

 # generate doxygen documentation for libnetconf2 API
 find_package(Doxygen)
 if(DOXYGEN_FOUND)
     set(DOXYGEN_SKIP_DOT TRUE)
     add_custom_target(doc
             COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
     configure_file(Doxyfile.in Doxyfile)
 endif()

 # Python bindings
 if(ENABLE_PYTHON)
     add_subdirectory(python)
 endif()

 # packages
 add_subdirectory(packages)

 # install library
 install(TARGETS netconf2 DESTINATION ${CMAKE_INSTALL_LIBDIR})

 # install headers
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/nc_client.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/nc_server.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 install(FILES ${headers} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/libnetconf2)

 # install pkg-config file
 find_package(PkgConfig)
 if(PKG_CONFIG_FOUND)
     configure_file("libnetconf2.pc.in" "libnetconf2.pc" @ONLY)
     install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libnetconf2.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
     # check that pkg-config includes the used path
     execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --variable pc_path pkg-config RESULT_VARIABLE RETURN OUTPUT_VARIABLE PC_PATH ERROR_QUIET)
     if(RETURN EQUAL 0)
         string(REGEX MATCH "${CMAKE_INSTALL_LIBDIR}/pkgconfig" SUBSTR "${PC_PATH}")
         string(LENGTH "${SUBSTR}" SUBSTR_LEN)
         if(SUBSTR_LEN EQUAL 0)
             message(WARNING "pkg-config will not detect the new package after installation, adjust PKG_CONFIG_PATH using \"export PKG_CONFIG_PATH=\${PKG_CONFIG_PATH}:${CMAKE_INSTALL_LIBDIR}/pkgconfig\".")
         endif()
     endif()
 endif()

 if(ENABLE_VALGRIND_TESTS)
     set(ENABLE_BUILD_TESTS ON)
 endif()

 if(ENABLE_BUILD_TESTS)
     find_package(CMocka 1.0.0)
     if(CMOCKA_FOUND)
         enable_testing()
         add_subdirectory(tests)
     endif()
 endif()

 configure_file("${PROJECT_SOURCE_DIR}/src/config.h.in" "${PROJECT_BINARY_DIR}/src/config.h" ESCAPE_QUOTES @ONLY)
 configure_file(nc_client.h.in nc_client.h)
 configure_file(nc_server.h.in nc_server.h)

 # clean cmake cache
 add_custom_target(cleancache
                   COMMAND make clean
                   COMMAND find . -iname '*cmake*' -not -name CMakeLists.txt -exec rm -rf {} +
                   COMMAND rm -rf Makefile Doxyfile
                   WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})

 # uninstall
 add_custom_target(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_MODULE_PATH}/uninstall.cmake")
	cmake_minimum_required(VERSION 2.6)

	project(libnetconf2 C)
	set(LIBNETCONF2_DESC "NETCONF library in C providing API for both clients and servers.")

	# include custom Modules
	list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMakeModules/")

	include(GNUInstallDirs)
	include(CheckFunctionExists)
	include(CheckCSourceCompiles)
	include(CheckIncludeFile)
	include(UseCompat)

	if(POLICY CMP0075)
	cmake_policy(SET CMP0075 NEW)
	endif()

	set(LIBNETCONF2_DESCRIPTION "NETCONF server and client library in C.")

	# check the supported platform
	if(NOT UNIX)
	message(FATAL_ERROR "Only *nix like systems are supported.")
	endif()

	# osx specific
	set(CMAKE_MACOSX_RPATH TRUE)

	# set default build type if not specified by user
	if(NOT CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE Debug)
	endif()

	add_compile_options(-Wall -Wextra -fvisibility=hidden -std=gnu99)
	set(CMAKE_C_FLAGS_PACKAGE "-g -O2 -DNDEBUG")

	# Version of the project
	# Generic version of not only the library. Major version is reserved for really big changes of the project,
	# minor version changes with added functionality (new tool, functionality of the tool or library, ...) and
	# micro version is changed with a set of small changes or bugfixes anywhere in the project.
	set(LIBNETCONF2_MAJOR_VERSION 1)
	set(LIBNETCONF2_MINOR_VERSION 1)
	set(LIBNETCONF2_MICRO_VERSION 32)
	set(LIBNETCONF2_VERSION ${LIBNETCONF2_MAJOR_VERSION}.${LIBNETCONF2_MINOR_VERSION}.${LIBNETCONF2_MICRO_VERSION})

	# Version of the library
	# Major version is changed with every backward non-compatible API/ABI change in libyang, minor version changes
	# with backward compatible change and micro version is connected with any internal change of the library.
	set(LIBNETCONF2_MAJOR_SOVERSION 1)
	set(LIBNETCONF2_MINOR_SOVERSION 3)
	set(LIBNETCONF2_MICRO_SOVERSION 12)
	set(LIBNETCONF2_SOVERSION_FULL ${LIBNETCONF2_MAJOR_SOVERSION}.${LIBNETCONF2_MINOR_SOVERSION}.${LIBNETCONF2_MICRO_SOVERSION})
	set(LIBNETCONF2_SOVERSION ${LIBNETCONF2_MAJOR_SOVERSION})

	# libyang SO version required
	set(LIBYANG_DEP_SOVERSION_MAJOR 1)

	# build options
	option(ENABLE_SSH "Enable NETCONF over SSH support (via libssh)" ON)
	option(ENABLE_TLS "Enable NETCONF over TLS support (via OpenSSL)" ON)
	option(ENABLE_DNSSEC "Enable support for SSHFP retrieval using DNSSEC for SSH (requires OpenSSL and libval)" OFF)
	option(ENABLE_PYTHON "Include bindings for Python 3" OFF)
	set(READ_INACTIVE_TIMEOUT 20 CACHE STRING "Maximum number of seconds waiting for new data once some data have arrived")
	set(READ_ACTIVE_TIMEOUT 300 CACHE STRING "Maximum number of seconds for receiving a full message")
	set(MAX_PSPOLL_THREAD_COUNT 6 CACHE STRING "Maximum number of threads that could simultaneously access a ps_poll structure")
	set(TIMEOUT_STEP 100 CACHE STRING "Number of microseconds tasks are repeated until timeout elapses")
	set(YANG_MODULE_DIR "${CMAKE_INSTALL_PREFIX}/share/yang/modules" CACHE STRING "Directory with common YANG modules")

	if(ENABLE_DNSSEC AND NOT ENABLE_SSH)
	message(WARNING "DNSSEC SSHFP retrieval cannot be used without SSH support.")
	set(ENABLE_DNSSEC OFF)
	endif()

	include_directories(${PROJECT_BINARY_DIR}/src)

	# source files
	set(libsrc
	src/io.c
	src/log.c
	src/messages_client.c
	src/messages_server.c
	src/session.c
	src/session_client.c
	src/session_server.c
	src/time.c)

	if(ENABLE_SSH)
	list(APPEND libsrc
	src/session_client_ssh.c
	src/session_server_ssh.c)
	set(SSH_MACRO "#ifndef NC_ENABLED_SSH\n#define NC_ENABLED_SSH\n#endif")
	endif()

	if(ENABLE_TLS)
	list(APPEND libsrc
	src/session_client_tls.c
	src/session_server_tls.c)
	set(TLS_MACRO "#ifndef NC_ENABLED_TLS\n#define NC_ENABLED_TLS\n#endif")
	endif()

	set(headers
	${PROJECT_BINARY_DIR}/src/config.h
	src/log.h
	src/netconf.h
	src/session.h
	src/messages_client.h
	src/messages_server.h
	src/session_client.h
	src/session_client_ch.h
	src/session_server.h
	src/session_server_ch.h)

	# use compat
	use_compat()

	# netconf2 target
	add_library(netconf2 SHARED ${libsrc} ${headers} $<TARGET_OBJECTS:compat>)
	set_target_properties(netconf2 PROPERTIES VERSION ${LIBNETCONF2_SOVERSION_FULL} SOVERSION ${LIBNETCONF2_SOVERSION})

	if((CMAKE_BUILD_TYPE STREQUAL Debug) OR (CMAKE_BUILD_TYPE STREQUAL Package))
	option(ENABLE_BUILD_TESTS "Build tests" ON)
	option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" ON)
	else()
	option(ENABLE_BUILD_TESTS "Build tests" OFF)
	option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" OFF)
	endif()

	# dependencies - pthread
	set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
	find_package(Threads REQUIRED)
	target_link_libraries(netconf2 ${CMAKE_THREAD_LIBS_INIT})

	# check availability for some pthread functions
	set(CMAKE_REQUIRED_LIBRARIES pthread)
	check_include_file(stdatomic.h HAVE_STDATOMIC)
	check_function_exists(pthread_mutex_timedlock HAVE_PTHREAD_MUTEX_TIMEDLOCK)
	check_function_exists(pthread_rwlockattr_setkind_np HAVE_PTHREAD_RWLOCKATTR_SETKIND_NP)

	# dependencies - openssl
	if(ENABLE_TLS OR ENABLE_DNSSEC OR ENABLE_SSH)
	find_package(OpenSSL REQUIRED)
	if(ENABLE_TLS)
	message(STATUS "OPENSSL found, required for TLS")
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNC_ENABLED_TLS")
	endif()

	target_link_libraries(netconf2 ${OPENSSL_LIBRARIES})
	include_directories(${OPENSSL_INCLUDE_DIR})
	endif()

	# dependencies - libssh
	if(ENABLE_SSH)
	find_package(LibSSH 0.7.1 REQUIRED)
	if(LIBSSH_VERSION VERSION_EQUAL 0.9.3 OR LIBSSH_VERSION VERSION_EQUAL 0.9.4)
	message(FATAL_ERROR "LibSSH ${LIBSSH_VERSION} includes regression bugs and libnetconf2 will NOT work properly, try to use another version")
	endif()

	target_link_libraries(netconf2 ${LIBSSH_LIBRARIES})
	list(APPEND CMAKE_REQUIRED_LIBRARIES ${LIBSSH_LIBRARIES})
	include_directories(${LIBSSH_INCLUDE_DIRS})
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNC_ENABLED_SSH")

	# crypt
	if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "QNX")
	target_link_libraries(netconf2 -lcrypt)
	list(APPEND CMAKE_REQUIRED_LIBRARIES crypt)
	else()
	target_link_libraries(netconf2 -llogin)
	list(APPEND CMAKE_REQUIRED_LIBRARIES login)
	endif()
	endif()

	# dependencies - libval
	if(ENABLE_DNSSEC)
	find_package(LibVAL REQUIRED)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_DNSSEC")
	target_link_libraries(netconf2 ${LIBVAL_LIBRARIES})
	include_directories(${LIBVAL_INCLUDE_DIRS})
	endif()

	# dependencies - libyang
	find_package(LibYANG REQUIRED)
	target_link_libraries(netconf2 ${LIBYANG_LIBRARIES})
	include_directories(${LIBYANG_INCLUDE_DIRS})

	# header file compatibility - shadow.h and crypt.h
	check_include_file("shadow.h" HAVE_SHADOW)
	check_include_file("crypt.h" HAVE_CRYPT)

	# function compatibility - getpeereid on QNX
	if(${CMAKE_SYSTEM_NAME} MATCHES "QNX")
	target_link_libraries(netconf2 -lsocket)
	list(APPEND CMAKE_REQUIRED_LIBRARIES socket)
	list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES pthread)
	list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_QNX_SOURCE)
	check_symbol_exists(getpeereid "sys/types.h;unistd.h" HAVE_GETPEEREID)
	list(REMOVE_ITEM CMAKE_REQUIRED_DEFINITIONS -D_QNX_SOURCE)
	endif()

	# generate doxygen documentation for libnetconf2 API
	find_package(Doxygen)
	if(DOXYGEN_FOUND)
	set(DOXYGEN_SKIP_DOT TRUE)
	add_custom_target(doc
	COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
	configure_file(Doxyfile.in Doxyfile)
	endif()

	# Python bindings
	if(ENABLE_PYTHON)
	add_subdirectory(python)
	endif()

	# packages
	add_subdirectory(packages)

	# install library
	install(TARGETS netconf2 DESTINATION ${CMAKE_INSTALL_LIBDIR})

	# install headers
	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/nc_client.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/nc_server.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
	install(FILES ${headers} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/libnetconf2)

	# install pkg-config file
	find_package(PkgConfig)
	if(PKG_CONFIG_FOUND)
	configure_file("libnetconf2.pc.in" "libnetconf2.pc" @ONLY)
	install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libnetconf2.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
	# check that pkg-config includes the used path
	execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --variable pc_path pkg-config RESULT_VARIABLE RETURN OUTPUT_VARIABLE PC_PATH ERROR_QUIET)
	if(RETURN EQUAL 0)
	string(REGEX MATCH "${CMAKE_INSTALL_LIBDIR}/pkgconfig" SUBSTR "${PC_PATH}")
	string(LENGTH "${SUBSTR}" SUBSTR_LEN)
	if(SUBSTR_LEN EQUAL 0)
	message(WARNING "pkg-config will not detect the new package after installation, adjust PKG_CONFIG_PATH using \"export PKG_CONFIG_PATH=\${PKG_CONFIG_PATH}:${CMAKE_INSTALL_LIBDIR}/pkgconfig\".")
	endif()
	endif()
	endif()

	if(ENABLE_VALGRIND_TESTS)
	set(ENABLE_BUILD_TESTS ON)
	endif()

	if(ENABLE_BUILD_TESTS)
	find_package(CMocka 1.0.0)
	if(CMOCKA_FOUND)
	enable_testing()
	add_subdirectory(tests)
	endif()
	endif()

	configure_file("${PROJECT_SOURCE_DIR}/src/config.h.in" "${PROJECT_BINARY_DIR}/src/config.h" ESCAPE_QUOTES @ONLY)
	configure_file(nc_client.h.in nc_client.h)
	configure_file(nc_server.h.in nc_server.h)

	# clean cmake cache
	add_custom_target(cleancache
	COMMAND make clean
	COMMAND find . -iname 'cmake' -not -name CMakeLists.txt -exec rm -rf {} +
	COMMAND rm -rf Makefile Doxyfile
	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})

	# uninstall
	add_custom_target(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_MODULE_PATH}/uninstall.cmake")