project (ZyklonB C)
cmake_minimum_required (VERSION 2.8.5)

# Moar warnings
if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)
	# -Wunused-function is pretty annoying here, as everything is static
	set (CMAKE_C_FLAGS "-std=c99 -Wall -Wextra -Wno-unused-function")
endif ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)

# Version
set (project_VERSION_MAJOR "0")
set (project_VERSION_MINOR "1")
set (project_VERSION_PATCH "0")

set (project_VERSION "${project_VERSION_MAJOR}")
set (project_VERSION "${project_VERSION}.${project_VERSION_MINOR}")
set (project_VERSION "${project_VERSION}.${project_VERSION_PATCH}")

# Dependencies
find_package (PkgConfig REQUIRED)
pkg_check_modules (libssl REQUIRED libssl libcrypto)

# -lpthread is only there for debugging (gdb & errno)
# -lrt is only for glibc < 2.17
list (APPEND project_libraries ${libssl_LIBRARIES} rt pthread)
include_directories (${libssl_INCLUDE_DIRS})
link_directories (${libssl_LIBRARY_DIRS})

# Generate a configuration file
include (GNUInstallDirs)
set (plugin_dir ${CMAKE_INSTALL_LIBDIR}/${PROJECT_NAME})
configure_file (${PROJECT_SOURCE_DIR}/config.h.in ${PROJECT_BINARY_DIR}/config.h)
include_directories (${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})

# Project source files
set (common_sources siphash.c)
set (common_headers ${PROJECT_BINARY_DIR}/config.h)

add_custom_command (OUTPUT kike-replies.c kike.msg
	COMMAND ${PROJECT_SOURCE_DIR}/kike-gen-replies.sh
		> kike-replies.c < ${PROJECT_SOURCE_DIR}/kike-replies
	DEPENDS ${PROJECT_SOURCE_DIR}/kike-replies
	COMMENT "Generating files from the list of server numerics")
set_source_files_properties (${PROJECT_BINARY_DIR}/kike-replies.c
	PROPERTIES HEADER_FILE_ONLY TRUE)

# Build
add_executable (zyklonb zyklonb.c ${common_sources} ${common_headers})
target_link_libraries (zyklonb ${project_libraries})

add_executable (kike kike.c kike-replies.c ${common_sources} ${common_headers})
target_link_libraries (kike ${project_libraries})

# Installation
install (TARGETS zyklonb kike DESTINATION ${CMAKE_INSTALL_BINDIR})
install (FILES LICENSE DESTINATION ${CMAKE_INSTALL_DOCDIR})

foreach (plugin coin eval script youtube ${plugins})
	install (FILES plugins/${plugin} DESTINATION ${plugin_dir})
endforeach (plugin)

# Generate documentation from program help
find_program (HELP2MAN_EXECUTABLE help2man)
if (NOT HELP2MAN_EXECUTABLE)
	message (FATAL_ERROR "help2man not found")
endif (NOT HELP2MAN_EXECUTABLE)

foreach (page zyklonb kike)
	set (page_output "${PROJECT_BINARY_DIR}/${page}.1")
	list (APPEND project_MAN_PAGES "${page_output}")
	add_custom_command (OUTPUT ${page_output}
		COMMAND ${HELP2MAN_EXECUTABLE} -N --no-discard-stderr # FIXME
			"${PROJECT_BINARY_DIR}/${page}" -o ${page_output}
		DEPENDS ${page}
		COMMENT "Generating man page for ${page}" VERBATIM)
endforeach (page)

add_custom_target (docs ALL DEPENDS ${project_MAN_PAGES})

foreach (page ${project_MAN_PAGES})
	string (REGEX MATCH "\\.([0-9])" manpage_suffix "${page}")
	install (FILES "${page}"
		DESTINATION "${CMAKE_INSTALL_MANDIR}/man${CMAKE_MATCH_1}")
endforeach (page)

# CPack
set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Experimental IRC bot & daemon")
set (CPACK_PACKAGE_VERSION ${project_VERSION})
set (CPACK_PACKAGE_VENDOR "Premysl Janouch")
set (CPACK_PACKAGE_CONTACT "Přemysl Janouch <p.janouch@gmail.com>")
set (CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")

set (CPACK_GENERATOR "TGZ;ZIP")
set (CPACK_PACKAGE_FILE_NAME
	"${PROJECT_NAME}-${project_VERSION}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
set (CPACK_PACKAGE_INSTALL_DIRECTORY "${PROJECT_NAME}-${project_VERSION}")

set (CPACK_SOURCE_GENERATOR "TGZ;ZIP")
set (CPACK_SOURCE_IGNORE_FILES "/\\\\.git;/build;/CMakeLists.txt.user")
set (CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${project_VERSION}")

set (CPACK_SET_DESTDIR TRUE)
include (CPack)