#
# Copyright (C) 2003-2023 Sébastien Helleu <flashcode@flashtux.org>
# Copyright (C) 2007-2008 Julien Louis <ptitlouis@sysif.net>
# Copyright (C) 2008-2009 Emmanuel Bouthenot <kolter@openics.org>
#
# This file is part of WeeChat, the extensible chat client.
#
# WeeChat is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# WeeChat is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with WeeChat.  If not, see <https://www.gnu.org/licenses/>.
#

cmake_minimum_required(VERSION 3.0)

project(weechat C)

# CMake options
set(CMAKE_VERBOSE_MAKEFILE OFF)
set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
set(CMAKE_SKIP_RPATH ON)

# compiler options
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsigned-char -fms-extensions -Wall -Wextra -Werror-implicit-function-declaration")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsigned-char -fms-extensions -Wall -Wextra")
if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
  # extra options specific to gcc/g++
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wformat-overflow=2 -Wformat-truncation=2")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wformat-overflow=2 -Wformat-truncation=2")
endif()

# version
execute_process(COMMAND ${CMAKE_SOURCE_DIR}/version.sh devel-major OUTPUT_VARIABLE VERSION_MAJOR)
execute_process(COMMAND ${CMAKE_SOURCE_DIR}/version.sh devel-minor OUTPUT_VARIABLE VERSION_MINOR)
execute_process(COMMAND ${CMAKE_SOURCE_DIR}/version.sh devel-patch OUTPUT_VARIABLE VERSION_PATCH)
string(REGEX REPLACE "\n" "" VERSION_MAJOR "${VERSION_MAJOR}")
string(REGEX REPLACE "\n" "" VERSION_MINOR "${VERSION_MINOR}")
string(REGEX REPLACE "\n" "" VERSION_PATCH "${VERSION_PATCH}")
if(VERSION_PATCH STREQUAL "")
  set(VERSION ${VERSION_MAJOR}.${VERSION_MINOR})
else()
  set(VERSION ${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH})
endif()

# license
set(LICENSE "GPL3")

# add definitions for version and license
if(COMMAND cmake_policy)
  cmake_policy(SET CMP0005 NEW)
  add_definitions(-DWEECHAT_VERSION="${VERSION}" -DWEECHAT_LICENSE="${LICENSE}")
else()
  add_definitions(-DWEECHAT_VERSION='"${VERSION}"' -DWEECHAT_LICENSE='"${LICENSE}"')
endif()

# package string
set(PKG_STRING "${PROJECT_NAME} ${VERSION}")
string(REPLACE "\";\"" "\ " PKG_STRING ${PKG_STRING})

if(NOT DEFINED LIBDIR)
  set(LIBDIR ${CMAKE_INSTALL_PREFIX}/lib)
endif()

if(NOT DEFINED WEECHAT_LIBDIR)
  set(WEECHAT_LIBDIR ${LIBDIR}/${PROJECT_NAME})
endif()

if(NOT DEFINED DATAROOTDIR)
  set(DATAROOTDIR ${CMAKE_INSTALL_PREFIX}/share)
endif()

if(NOT DEFINED WEECHAT_SHAREDIR)
  set(WEECHAT_SHAREDIR ${DATAROOTDIR}/weechat)
endif()

if(NOT DEFINED MANDIR)
  set(MANDIR ${DATAROOTDIR}/man)
endif()

if(NOT DEFINED LOCALEDIR)
  set(LOCALEDIR ${DATAROOTDIR}/locale)
endif()

if(DEFINED INCLUDEDIR)
  set(INCLUDEDIR ${INCLUDEDIR}/${PROJECT_NAME})
else()
  set(INCLUDEDIR ${CMAKE_INSTALL_PREFIX}/include/${PROJECT_NAME})
endif()

option(ENABLE_NCURSES        "Compile the Ncurses interface"            ON)
option(ENABLE_HEADLESS       "Compile the headless binary"              ON)
option(ENABLE_NLS            "Enable Native Language Support"           ON)
option(ENABLE_LARGEFILE      "Enable Large File Support"                ON)
option(ENABLE_ALIAS          "Enable Alias plugin"                      ON)
option(ENABLE_BUFLIST        "Enable Buflist plugin"                    ON)
option(ENABLE_CHARSET        "Enable Charset plugin"                    ON)
option(ENABLE_EXEC           "Enable Exec plugin"                       ON)
option(ENABLE_FIFO           "Enable FIFO plugin"                       ON)
option(ENABLE_FSET           "Enable Fast Set plugin"                   ON)
option(ENABLE_IRC            "Enable IRC plugin"                        ON)
option(ENABLE_LOGGER         "Enable Logger plugin"                     ON)
option(ENABLE_RELAY          "Enable Relay plugin"                      ON)
option(ENABLE_SCRIPT         "Enable Script plugin (script manager)"    ON)
option(ENABLE_SCRIPTS        "Enable script plugins (perl, python, …)"  ON)
option(ENABLE_PERL           "Enable Perl scripting language"           ON)
option(ENABLE_PYTHON         "Enable Python scripting language"         ON)
option(ENABLE_RUBY           "Enable Ruby scripting language"           ON)
option(ENABLE_LUA            "Enable Lua scripting language"            ON)
option(ENABLE_TCL            "Enable Tcl scripting language"            ON)
option(ENABLE_GUILE          "Enable Scheme (guile) scripting language" ON)
option(ENABLE_JAVASCRIPT     "Enable JavaScript scripting language"     OFF)
option(ENABLE_PHP            "Enable PHP scripting language"            ON)
option(ENABLE_SPELL          "Enable Spell checker plugin"              ON)
option(ENABLE_ENCHANT        "Use Enchant lib in Spell checker plugin"  OFF)
option(ENABLE_TRIGGER        "Enable Trigger plugin"                    ON)
option(ENABLE_TYPING         "Enable Typing plugin"                     ON)
option(ENABLE_XFER           "Enable Xfer plugin"                       ON)
option(ENABLE_MAN            "Enable build of man page"                 OFF)
option(ENABLE_DOC            "Enable build of documentation"            OFF)
option(ENABLE_DOC_INCOMPLETE "Enable incomplete doc"                    OFF)
option(ENABLE_TESTS          "Enable tests"                             OFF)
option(ENABLE_CODE_COVERAGE  "Enable code coverage"                     OFF)

# code coverage
add_library(coverage_config INTERFACE)
if(ENABLE_CODE_COVERAGE)
  target_compile_options(coverage_config INTERFACE -O0 -g --coverage)
  target_link_libraries(coverage_config INTERFACE --coverage)
endif()

# headless mode is required for documentation
if(ENABLE_DOC AND NOT ENABLE_HEADLESS)
  message(FATAL_ERROR "Headless mode is required to build documentation.")
endif()

# all plugins (except javascript) are required for documentation
if(ENABLE_DOC AND NOT ENABLE_DOC_INCOMPLETE
    AND (NOT ENABLE_NLS OR NOT ENABLE_ALIAS OR NOT ENABLE_BUFLIST
      OR NOT ENABLE_CHARSET OR NOT ENABLE_EXEC OR NOT ENABLE_FIFO
      OR NOT ENABLE_FSET OR NOT ENABLE_IRC OR NOT ENABLE_LOGGER
      OR NOT ENABLE_RELAY OR NOT ENABLE_SCRIPT OR NOT ENABLE_SCRIPTS
      OR NOT ENABLE_PERL OR NOT ENABLE_PYTHON OR NOT ENABLE_RUBY
      OR NOT ENABLE_LUA OR NOT ENABLE_TCL OR NOT ENABLE_GUILE
      OR NOT ENABLE_PHP OR NOT ENABLE_SPELL OR NOT ENABLE_TRIGGER
      OR NOT ENABLE_TYPING OR NOT ENABLE_XFER))
  message(
    FATAL_ERROR
    " All plugins are required to build documentation.\n"
    " If you really want to build incomplete docs, enable this option:\n"
    "   -DENABLE_DOC_INCOMPLETE=ON"
  )
endif()

# headless mode is required for tests
if(ENABLE_TESTS AND NOT ENABLE_HEADLESS)
  message(FATAL_ERROR "Headless mode is required for tests.")
endif()

# option WEECHAT_HOME
set(WEECHAT_HOME "${WEECHAT_HOME}" CACHE
  STRING "Force a single WeeChat home directory for config, logs, scripts, etc."
  FORCE)
mark_as_advanced(CLEAR WEECHAT_HOME)

if(COMMAND cmake_policy)
  if(POLICY CMP0003)
    cmake_policy(SET CMP0003 NEW)
  endif()
  if(POLICY CMP0017)
    cmake_policy(SET CMP0017 NEW)
  endif()
endif()

add_definitions(-DHAVE_CONFIG_H)

include(FindPkgConfig)

include(CheckIncludeFiles)
include(CheckFunctionExists)
include(CheckSymbolExists)

check_include_files("langinfo.h" HAVE_LANGINFO_CODESET)
check_include_files("sys/resource.h" HAVE_SYS_RESOURCE_H)

check_function_exists(mallinfo HAVE_MALLINFO)
check_function_exists(mallinfo2 HAVE_MALLINFO2)

check_symbol_exists("eat_newline_glitch" "term.h" HAVE_EAT_NEWLINE_GLITCH)

# Check for Large File Support
if(ENABLE_LARGEFILE)
  add_definitions(-D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -D_LARGE_FILES)
endif()

# Check for Gettext
if(ENABLE_NLS)
  find_package(Gettext)
  if(GETTEXT_FOUND)
    add_definitions(-DENABLE_NLS)
    find_package(Intl)
    if(Intl_FOUND)
      list(APPEND EXTRA_LIBS "${Intl_LIBRARIES}")
    endif()
  else()
    message(SEND_ERROR "Gettext not found")
  endif()
endif()

# Check for libgcrypt
find_package(GCRYPT REQUIRED)
add_definitions(-DHAVE_GCRYPT)
list(APPEND EXTRA_LIBS ${GCRYPT_LDFLAGS})

# Check for GnuTLS
find_package(GnuTLS REQUIRED)
string(REGEX REPLACE "/[^/]*$" "" GNUTLS_LIBRARY_PATH "${GNUTLS_LIBRARY}")
include_directories(${GNUTLS_INCLUDE_PATH})
set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -L${GNUTLS_LIBRARY_PATH}")
list(APPEND EXTRA_LIBS gnutls)

# Check for zlib
find_package(ZLIB REQUIRED)

# Check for zstd
pkg_check_modules(LIBZSTD REQUIRED libzstd)

# Check for iconv
find_package(Iconv)
if(ICONV_FOUND)
  add_definitions(-DHAVE_ICONV)
endif()

# Check for CURL
find_package(CURL REQUIRED)

# weechat_gui_common MUST be the first lib in the list
set(STATIC_LIBS weechat_gui_common)

find_library(DL_LIBRARY
  NAMES dl
  PATHS /lib /usr/lib /usr/libexec /usr/local/lib /usr/local/libexec
)
list(APPEND STATIC_LIBS weechat_plugins)
if(DL_LIBRARY)
  string(REGEX REPLACE "/[^/]*$" "" DL_LIBRARY_PATH "${DL_LIBRARY}")
  set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -L${DL_LIBRARY_PATH}")
  list(APPEND EXTRA_LIBS dl)
endif()

add_subdirectory(icons)

if(ENABLE_NLS)
  add_subdirectory(po)
endif()

add_subdirectory(src)
add_subdirectory(doc)

if(ENABLE_TESTS)
  find_package(CppUTest)
  if(CPPUTEST_FOUND)
    enable_testing()
    add_subdirectory(tests)
  else()
    message(SEND_ERROR "CppUTest not found")
  endif()
else()
  enable_testing()
  add_test(NAME notests COMMAND true)
endif()

configure_file(config.h.cmake config.h @ONLY)

# set the git version in "config-git.h"
add_custom_target(version_git ALL
  COMMAND "${CMAKE_CURRENT_SOURCE_DIR}/tools/set_git_version.sh" "${CMAKE_CURRENT_SOURCE_DIR}" "${VERSION}" "config-git.h"
  WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
)

configure_file(
  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
  "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
  IMMEDIATE @ONLY
)

add_custom_target(uninstall
  "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
)

add_custom_target(dist
  "${CMAKE_CURRENT_SOURCE_DIR}/tools/makedist.sh" "${VERSION}" "HEAD" "${CMAKE_CURRENT_BINARY_DIR}"
  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)

# pkgconfig file
set(PACKAGE "${PROJECT_NAME}")
set(prefix "${CMAKE_INSTALL_PREFIX}")
set(exec_prefix "\${prefix}")
string(REPLACE "${CMAKE_INSTALL_PREFIX}" "\${prefix}" libdir "${LIBDIR}")
set(includedir "\${prefix}/include")
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/weechat.pc.in ${CMAKE_CURRENT_BINARY_DIR}/weechat.pc @ONLY)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/weechat.pc DESTINATION ${LIBDIR}/pkgconfig)

# cygport file (used to build Cygwin packages)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/weechat.cygport.in ${CMAKE_CURRENT_BINARY_DIR}/weechat-${VERSION}-1.cygport @ONLY)

# install some files (only on Cygwin)
if(CYGWIN)
  install(FILES
    ${CMAKE_CURRENT_SOURCE_DIR}/AUTHORS.adoc
    ${CMAKE_CURRENT_SOURCE_DIR}/ChangeLog.adoc
    ${CMAKE_CURRENT_SOURCE_DIR}/Contributing.adoc
    ${CMAKE_CURRENT_SOURCE_DIR}/README.adoc
    ${CMAKE_CURRENT_SOURCE_DIR}/ReleaseNotes.adoc
    DESTINATION ${DATAROOTDIR}/doc/${PROJECT_NAME}
  )
endif()

# desktop file
install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/weechat.desktop DESTINATION ${DATAROOTDIR}/applications)