# ==========================================================================
#             ____        _     _   _      _    ____      _
#            / ___| _   _| |__ | \ | | ___| |_ / ___|__ _| | ___
#            \___ \| | | | '_ \|  \| |/ _ \ __| |   / _` | |/ __|
#             ___) | |_| | |_) | |\  |  __/ |_| |__| (_| | | (__
#            |____/ \__,_|_.__/|_| \_|\___|\__|\____\__,_|_|\___|
#
#                    ---  IPv4/IPv6 Subnet Calculator  ---
#                   https://www.nntb.no/~dreibh/subnetcalc/
# ==========================================================================
#
# SubNetCalc - IPv4/IPv6 Subnet Calculator
# Copyright (C) 2024-2025 by Thomas Dreibholz
#
# This program 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.
#
# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Contact: thomas.dreibholz@gmail.com

CMAKE_MINIMUM_REQUIRED(VERSION 3.10)
PROJECT(subnetcalc LANGUAGES C CXX)

SET(BUILD_MAJOR "2")
SET(BUILD_MINOR "6")
SET(BUILD_PATCH "4")
SET(BUILD_VERSION ${BUILD_MAJOR}.${BUILD_MINOR}.${BUILD_PATCH})


#############################################################################
#### INSTALLATION_DIRECTORIES                                            ####
#############################################################################

# See: https://cmake.org/cmake/help/v3.0/module/GNUInstallDirs.html
INCLUDE(GNUInstallDirs)


#############################################################################
#### PACKAGING                                                           ####
#############################################################################

SET(CPACK_SOURCE_GENERATOR "TXZ")
SET(CPACK_SOURCE_PACKAGE_FILE_NAME
    "${CMAKE_PROJECT_NAME}-${BUILD_MAJOR}.${BUILD_MINOR}.${BUILD_PATCH}")
SET(CPACK_SOURCE_IGNORE_FILES "\\\\.git;\\\\.swp$;~$;\\\\.\\\\#;/\\\\#")
LIST(APPEND CPACK_SOURCE_IGNORE_FILES "^${PROJECT_SOURCE_DIR}/${CMAKE_PROJECT_NAME}[_-]")
LIST(APPEND CPACK_SOURCE_IGNORE_FILES "\\\\.cmake$|\\\\.make$|\\\\.log$")
LIST(APPEND CPACK_SOURCE_IGNORE_FILES "/CMakeCache\\\\.txt$")
LIST(APPEND CPACK_SOURCE_IGNORE_FILES "/(CMakeFiles|CMakeScripts|_CPack_Packages)/")
LIST(APPEND CPACK_SOURCE_IGNORE_FILES "/package-version\\\\.h$")
LIST(APPEND CPACK_SOURCE_IGNORE_FILES "/packaging\\\\.conf$")
LIST(APPEND CPACK_SOURCE_IGNORE_FILES "^${PROJECT_SOURCE_DIR}/(po.*/|src.*/|)Makefile$")
INCLUDE(CPack)

ADD_CUSTOM_TARGET(dist COMMAND ${CMAKE_MAKE_PROGRAM} clean package_source)


INCLUDE(CheckIncludeFile)
INCLUDE(CheckStructHasMember)


#############################################################################
#### UNINSTALL                                                           ####
#############################################################################

IF(NOT TARGET uninstall)
   CONFIGURE_FILE(
      "${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
      "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
      IMMEDIATE @ONLY)

   ADD_CUSTOM_TARGET(uninstall
      COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
ENDIF()


#############################################################################
#### OS DEPENDENT                                                        ####
#############################################################################

IF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    MESSAGE(STATUS ${CMAKE_SYSTEM_NAME} " supported")

ELSEIF (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
    MESSAGE(STATUS ${CMAKE_SYSTEM_NAME} " supported")
    SET(CMAKE_REQUIRED_INCLUDES "/usr/local/include" "/usr/include")
    SET(CMAKE_LIBRARY_PATH "/usr/local/lib")
    INCLUDE_DIRECTORIES("/usr/local/include")

ELSEIF (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
    MESSAGE(STATUS ${CMAKE_SYSTEM_NAME} " supported")
    SET(CMAKE_REQUIRED_INCLUDES "/usr/local/include" "/usr/include" "/usr/local/opt/openssl/include")
    SET(CMAKE_LIBRARY_PATH "/usr/local/lib")
    INCLUDE_DIRECTORIES("/usr/local/include" "/usr/local/opt/openssl/include")

ELSEIF (${CMAKE_SYSTEM_NAME} MATCHES "NetBSD")
    MESSAGE(STATUS ${CMAKE_SYSTEM_NAME} " supported")
    SET(CMAKE_REQUIRED_INCLUDES "/usr/pkg/include" "/usr/include" "/usr/local/include")
    SET(CMAKE_LIBRARY_PATH "/usr/local/lib")
    INCLUDE_DIRECTORIES("/usr/pkg/include" "/usr/local/include")

ELSE()
    MESSAGE(FATAL_ERROR ${CMAKE_SYSTEM_NAME} " not supported (yet?)")

ENDIF()


#############################################################################
#### CHECK STRUCT MEMBERS                                                ####
#############################################################################

CHECK_STRUCT_HAS_MEMBER("struct sockaddr" "sa_len" "sys/types.h;sys/socket.h" HAVE_SA_LEN)
IF (HAVE_SA_LEN)
    MESSAGE(STATUS "HAVE_SA_LEN")
    ADD_DEFINITIONS(-DHAVE_SA_LEN)
ENDIF()

CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in" "sin_len" "sys/types.h;netinet/in.h" HAVE_SIN_LEN)
IF (HAVE_SIN_LEN)
    MESSAGE(STATUS "HAVE_SIN_LEN")
    ADD_DEFINITIONS(-DHAVE_SIN_LEN)
ENDIF()

CHECK_STRUCT_HAS_MEMBER("struct sockaddr_in6" "sin6_len" "sys/types.h;netinet/in.h" HAVE_SIN6_LEN)
IF (HAVE_SIN6_LEN)
    MESSAGE(STATUS "HAVE_SIN6_LEN")
    ADD_DEFINITIONS(-DHAVE_SIN6_LEN)
ENDIF()

CHECK_STRUCT_HAS_MEMBER("struct sockaddr_storage" "ss_len" "sys/types.h;sys/socket.h" HAVE_SS_LEN)
IF (HAVE_SS_LEN)
    MESSAGE(STATUS "HAVE_SS_LEN")
    ADD_DEFINITIONS(-DHAVE_SS_LEN)
ENDIF()


#############################################################################
#### REQUIREMENTS                                                        ####
#############################################################################

INCLUDE(FindPackageHandleStandardArgs)

# ###### GeoIP ##############################################################
FIND_LIBRARY(GeoIP_LIBRARY NAMES GeoIP)
FIND_PATH(GeoIP_INCLUDE_DIR NAMES GeoIP.h GeoIPCity.h)
IF (GEOIP_FOUND)
   INCLUDE_DIRECTORIES(${GeoIP_INCLUDE_DIR})
   ADD_DEFINITIONS(-DHAVE_GEOIP -DHAVE_GEOIP_IPV6)
   MESSAGE(STATUS "GeoIP found.")
ELSE()
   MESSAGE(STATUS "GeoIP not found!")
ENDIF()
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GeoIP DEFAULT_MSG GeoIP_LIBRARY GeoIP_INCLUDE_DIR)


#############################################################################
#### INTERNATIONALISATION (I18N)                                         ####
#############################################################################

FIND_PACKAGE (Intl)
IF (Intl_FOUND)
   INCLUDE_DIRECTORIES(${Intl_INCLUDE_DIRS})
   LINK_DIRECTORIES(${Intl_LIBRARY_DIRS})
ELSE()
   MESSAGE(STATUS "Internationalization (i18n) not found!")
ENDIF()

FIND_PROGRAM(XGETTEXT xgettext REQUIRED)
FIND_PROGRAM(MSGMERGE msgmerge REQUIRED)
FIND_PROGRAM(MSGFMT   msgfmt   REQUIRED)


#############################################################################
#### SUBDIRECTORIES                                                      ####
#############################################################################

ADD_SUBDIRECTORY(src)
ADD_SUBDIRECTORY(po)
