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# Ubuntu 18.04 LTS and OpenBSD 6.4
cmake_minimum_required (VERSION 3.10)
project (xK VERSION 1.5.0 DESCRIPTION "IRC client, daemon and bot" LANGUAGES C)
# Options
option (WANT_READLINE "Use GNU Readline for the UI (better)" ON)
option (WANT_LIBEDIT "Use BSD libedit for the UI" OFF)
# Moar warnings
set (CMAKE_C_STANDARD 99)
set (CMAKE_C_STANDARD_REQUIRED ON)
set (CMAKE_C_EXTENSIONS OFF)
if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)
# -Wunused-function is pretty annoying here, as everything is static
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-function")
endif ()
# Version
set (project_version "${PROJECT_VERSION}")
# Try to append commit ID if it follows a version tag. It might be nicer if
# we could also detect dirty worktrees but that's very hard to get right.
# If we didn't need this for CPack, we could use add_custom_command to generate
# a version source/include file.
find_package (Git)
set (git_head "${PROJECT_SOURCE_DIR}/.git/HEAD")
if (GIT_FOUND AND EXISTS "${git_head}")
configure_file ("${git_head}" git-head.tag COPYONLY)
file (READ "${git_head}" git_head_content)
if (git_head_content MATCHES "^ref: ([^\r\n]+)")
set (git_ref "${PROJECT_SOURCE_DIR}/.git/${CMAKE_MATCH_1}")
if (EXISTS "${git_ref}")
configure_file ("${git_ref}" git-ref.tag COPYONLY)
endif ()
endif ()
execute_process (COMMAND ${GIT_EXECUTABLE} describe --tags --match v*
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
RESULT_VARIABLE git_describe_result
OUTPUT_VARIABLE git_describe OUTPUT_STRIP_TRAILING_WHITESPACE)
if (NOT git_describe_result)
string (REGEX REPLACE "^v" "" project_version "${git_describe}")
endif ()
endif ()
# Dashes make filenames confusing and upset packaging software
string (REPLACE "-" "+" project_version_safe "${project_version}")
# Dependencies
set (CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/liberty/cmake)
include (AddThreads)
find_package (PkgConfig REQUIRED)
pkg_check_modules (libssl REQUIRED libssl libcrypto)
list (APPEND project_libraries ${libssl_LIBRARIES})
include_directories (${libssl_INCLUDE_DIRS})
link_directories (${libssl_LIBRARY_DIRS})
if ("${CMAKE_SYSTEM_NAME}" MATCHES "BSD")
# Need this for SIGWINCH in FreeBSD and OpenBSD respectively;
# our POSIX version macros make it undefined
add_definitions (-D__BSD_VISIBLE=1 -D_BSD_SOURCE=1)
elseif (APPLE)
add_definitions (-D_DARWIN_C_SOURCE)
endif ()
# -lrt is only for glibc < 2.17
# -liconv may or may not be a part of libc
# -lm may or may not be a part of libc
foreach (extra iconv rt m)
find_library (extra_lib_${extra} ${extra})
if (extra_lib_${extra})
list (APPEND project_libraries ${extra_lib_${extra}})
endif ()
endforeach ()
include (CheckCSourceRuns)
set (CMAKE_REQUIRED_LIBRARIES ${project_libraries})
get_property (CMAKE_REQUIRED_INCLUDES
DIRECTORY "${PROJECT_SOURCE_DIR}" PROPERTY INCLUDE_DIRECTORIES)
CHECK_C_SOURCE_RUNS ("#include <iconv.h>
int main () { return iconv_open (\"UTF-8//TRANSLIT\", \"ISO-8859-1\")
== (iconv_t) -1; }" ICONV_ACCEPTS_TRANSLIT)
# Dependencies for xC
pkg_check_modules (libffi REQUIRED libffi)
list (APPEND xC_libraries ${libffi_LIBRARIES})
include_directories (${libffi_INCLUDE_DIRS})
link_directories (${libffi_LIBRARY_DIRS})
# XXX: other Lua versions may be acceptable, don't know yet
pkg_search_module (lua lua53 lua5.3 lua-5.3 lua54 lua5.4 lua-5.4 lua>=5.3)
option (WITH_LUA "Enable support for Lua plugins" ${lua_FOUND})
if (WITH_LUA)
if (NOT lua_FOUND)
message (FATAL_ERROR "Lua library not found")
endif ()
list (APPEND xC_libraries ${lua_LIBRARIES})
include_directories (${lua_INCLUDE_DIRS})
link_directories (${lua_LIBRARY_DIRS})
endif ()
find_package (Curses)
pkg_check_modules (ncursesw ncursesw)
if (ncursesw_FOUND)
list (APPEND xC_libraries ${ncursesw_LIBRARIES})
include_directories (${ncursesw_INCLUDE_DIRS})
elseif (CURSES_FOUND)
list (APPEND xC_libraries ${CURSES_LIBRARY})
include_directories (${CURSES_INCLUDE_DIR})
else ()
message (SEND_ERROR "Curses not found")
endif ()
if ((WANT_READLINE AND WANT_LIBEDIT) OR (NOT WANT_READLINE AND NOT WANT_LIBEDIT))
message (SEND_ERROR "You have to choose either GNU Readline or libedit")
elseif (WANT_READLINE)
pkg_check_modules (readline readline)
# OpenBSD's default readline is too old
if ("${CMAKE_SYSTEM_NAME}" MATCHES "OpenBSD")
include_directories (${OPENBSD_LOCALBASE}/include/ereadline)
list (APPEND xC_libraries ereadline)
elseif (readline_FOUND)
list (APPEND xC_libraries ${readline_LIBRARIES})
include_directories (${readline_INCLUDE_DIRS})
link_directories (${readline_LIBRARY_DIRS})
else ()
list (APPEND xC_libraries readline)
endif ()
elseif (WANT_LIBEDIT)
pkg_check_modules (libedit REQUIRED libedit)
list (APPEND xC_libraries ${libedit_LIBRARIES})
include_directories (${libedit_INCLUDE_DIRS})
endif ()
# Generate a configuration file
set (HAVE_READLINE "${WANT_READLINE}")
set (HAVE_EDITLINE "${WANT_LIBEDIT}")
set (HAVE_LUA "${WITH_LUA}")
include (GNUInstallDirs)
configure_file (${PROJECT_SOURCE_DIR}/config.h.in ${PROJECT_BINARY_DIR}/config.h)
include_directories (${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})
# Generate IRC replies--we need a custom target because of the multiple outputs
add_custom_command (OUTPUT xD-replies.c xD.msg
COMMAND env LC_ALL=C awk -f ${PROJECT_SOURCE_DIR}/xD-gen-replies.awk
> xD-replies.c < ${PROJECT_SOURCE_DIR}/xD-replies
DEPENDS ${PROJECT_SOURCE_DIR}/xD-replies
COMMENT "Generating files from the list of server numerics")
add_custom_target (replies DEPENDS ${PROJECT_BINARY_DIR}/xD-replies.c)
# Build
foreach (name xB xC xD)
add_executable (${name} ${name}.c ${PROJECT_BINARY_DIR}/config.h)
target_link_libraries (${name} ${project_libraries})
add_threads (${name})
endforeach ()
add_dependencies (xD replies)
add_dependencies (xC replies)
target_link_libraries (xC ${xC_libraries})
# Tests
include (CTest)
if (BUILD_TESTING)
add_executable (test-xC $<TARGET_PROPERTY:xC,SOURCES>)
set_target_properties (test-xC PROPERTIES COMPILE_DEFINITIONS TESTING)
target_link_libraries (test-xC $<TARGET_PROPERTY:xC,LINK_LIBRARIES>)
add_threads (test-xC)
add_dependencies (test-xC replies)
add_test (NAME test-xC COMMAND test-xC)
add_test (NAME custom-static-analysis
COMMAND ${PROJECT_SOURCE_DIR}/test-static)
endif ()
# Various clang-based diagnostics, loads of fake positives and spam
file (GLOB clang_tidy_sources *.c)
set (clang_tidy_checks misc-* readability-*
-readability-braces-around-statements
-readability-named-parameter)
string (REPLACE ";" "," clang_tidy_checks "${clang_tidy_checks}")
set (CMAKE_EXPORT_COMPILE_COMMANDS ON)
add_custom_target (clang-tidy
COMMAND clang-tidy -p ${PROJECT_BINARY_DIR} -checks=${clang_tidy_checks}
${clang_tidy_sources} 1>&2
USES_TERMINAL
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
# Installation
install (TARGETS xB xC xD DESTINATION ${CMAKE_INSTALL_BINDIR})
install (FILES LICENSE DESTINATION ${CMAKE_INSTALL_DOCDIR})
# XXX: our defaults for XDG_DATA_DIRS expect /usr/local/share or /usr/share
install (DIRECTORY plugins/xB/
DESTINATION ${CMAKE_INSTALL_DATADIR}/xB/plugins USE_SOURCE_PERMISSIONS)
install (DIRECTORY plugins/xC/
DESTINATION ${CMAKE_INSTALL_DATADIR}/xC/plugins)
# Generate documentation from text markup
find_program (ASCIIDOCTOR_EXECUTABLE asciidoctor)
find_program (A2X_EXECUTABLE a2x)
if (NOT ASCIIDOCTOR_EXECUTABLE AND NOT A2X_EXECUTABLE)
message (FATAL_ERROR "Neither asciidoctor nor a2x were found")
endif ()
foreach (page xB xC xD)
set (page_output "${PROJECT_BINARY_DIR}/${page}.1")
list (APPEND project_MAN_PAGES "${page_output}")
if (ASCIIDOCTOR_EXECUTABLE)
add_custom_command (OUTPUT ${page_output}
COMMAND ${ASCIIDOCTOR_EXECUTABLE} -b manpage
-a release-version=${project_version}
-o "${page_output}"
"${PROJECT_SOURCE_DIR}/${page}.adoc"
DEPENDS ${page}.adoc
COMMENT "Generating man page for ${page}" VERBATIM)
elseif (A2X_EXECUTABLE)
add_custom_command (OUTPUT ${page_output}
COMMAND ${A2X_EXECUTABLE} --doctype manpage --format manpage
-a release-version=${project_version}
-D "${PROJECT_BINARY_DIR}"
"${PROJECT_SOURCE_DIR}/${page}.adoc"
DEPENDS ${page}.adoc
COMMENT "Generating man page for ${page}" VERBATIM)
endif ()
endforeach ()
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 ()
# CPack
set (CPACK_PACKAGE_VERSION "${project_version_safe}")
set (CPACK_PACKAGE_VENDOR "Premysl Eric Janouch")
set (CPACK_PACKAGE_CONTACT "Přemysl Eric Janouch <p@janouch.name>")
set (CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
set (CPACK_GENERATOR "TGZ;ZIP")
set (CPACK_PACKAGE_FILE_NAME
"${PROJECT_NAME}-${project_version_safe}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
set (CPACK_PACKAGE_INSTALL_DIRECTORY "${PROJECT_NAME}-${project_version_safe}")
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_safe}")
set (CPACK_SET_DESTDIR TRUE)
include (CPack)
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