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Diffstat (limited to '')
| -rw-r--r-- | CMakeLists.txt | 1371 |
1 files changed, 1371 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..9495b5d --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,1371 @@ +if(WIN32) + # + # We need 3.12 or later, so that we can set policy CMP0074; see + # below. + cmake_minimum_required(VERSION 3.12) +else(WIN32) + # + # For now, require only 2.8.6, just in case somebody is + # configuring with CMake on a "long-term support" version + # of some OS and that version supplies an older version of + # CMake. + # + # If this is ever updated to CMake 3.1 or later, remove the + # stuff in cmake/Modules/FindPCAP.cmake that appends subdirectories + # of directories from CMAKE_PREFIX_PATH to the PKG_CONFIG_PATH + # environment variable when running pkg-config, to make sure + # it finds any .pc file from there. + # + cmake_minimum_required(VERSION 2.8.12) +endif(WIN32) + +# +# We want find_path() and find_library() to honor {packagename}_ROOT, +# as that appears to be the standard way to say "hey, look here for +# this package" from the command line. +# +if(POLICY CMP0074) + cmake_policy(SET CMP0074 NEW) +endif() + +# +# OK, this is a pain. +# +# When building on NetBSD, with a libpcap installed from pkgsrc, +# a -Wl,-rpath,/usr/pkg/lib option is added to the options when +# linking tcpdump. This puts /usr/pkg/lib into the run-time path. +# +# However, by default, CMake adds a rule to the install CMake script +# a CMake command (using an undocumented subcommand of file()) that +# strips /usr/pkg/lib *out* of the run-time path; the message in the +# output for the "install" target is +# +# -- Set runtime path of "{target-directory}/tcpdump" to "" +# +# I am not certain what the rationale is for doing this, but a +# *consequence* of this is that, when you run the installed tcpdump, +# it fails to find libpcap.so: +# +# $ {target-directory}/tcpdump -h +# {target-directory}/tcpdump: Shared object "libpcap.so.0" not found +# +# It also appears to be the case that, on Ubuntu 22.04, FreeBSD 12, +# DragonFly BSD 5.8, OpenBSD 6.6, and Solaris 11.4, +# +# On Ubuntu and Solaris, even if you have a libpcap in /usr/local, you +# have to provide not only -I/usr/local/include and -L/usr/local/lib, +# you also must provide -Wl,-rpath,/usr/local/lib in order to have +# the run-time linker look in /usr/local/lib for libpcap. If it's not +# specified, then, if the shared library major version number of the +# libpcap in /usr/lib is the same as the shared major version number +# of the libpcap in /usr/local/lib, the run-time linker will find the +# libpcap in /usr/lib; if the versions are different, the run-time +# linker will fail to find the libpcap in /usr/lib, so the program will +# fail to run. +# +# We suppress this by setting CMAKE_INSTALL_RPATH_USE_LINK_PATH to TRUE; +# as the documentation for that variable says: +# +# Add paths to linker search and installed rpath. +# +# CMAKE_INSTALL_RPATH_USE_LINK_PATH is a boolean that if set to True +# will append to the runtime search path (rpath) of installed +# binaries any directories outside the project that are in the linker +# search path or contain linked library files. The directories are +# appended after the value of the INSTALL_RPATH target property. +# +# If, for whatever reason, directories in which we search for external +# libraries, other than the standard system library directories, are +# added to the executable's rpath in the build process, we most +# defintely want them in the installed image's rpath if they are +# necessary in order to find the libraries at run time. +# +set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE) + +set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules) + +# +# OK, this is a royal pain. +# +# CMake will try to determine the sizes of some data types, including +# void *, early in the process of configuration; apparently, it's done +# as part of processing the project() command. +# +# At least as of CMake 2.8.6, it does so by checking the size of +# "void *" in C, setting CMAKE_C_SIZEOF_DATA_PTR based on that, +# setting CMAKE_SIZEOF_VOID_P to that, and then checking the size +# of "void *" in C++, setting CMAKE_CXX_SIZEOF_DATA_PTR based on +# that, and then setting CMAKE_SIZEOF_VOID_P to *that*. +# +# The compile tests include whatever C flags may have been provided +# to CMake in the CFLAGS and CXXFLAGS environment variables. +# +# If you set an architecture flag such as -m32 or -m64 in CFLAGS +# but *not* in CXXFLAGS, the size for C++ will win, and hilarity +# will ensue. +# +# Or if, at least on Solaris, you have a newer version of GCC +# installed, but *not* a newer version of G++, and you have Oracle +# Studio installed, it will find GCC, which will default to building +# 64-bit, and Oracle Studio's C++ compiler, which will default to +# building 32-bit, the size for C++ will win, and, again, hilarity +# will ensue. +# +# So we *explicitly* state that only C is used; there is currently no +# C++ code in tcpdump. +# +project(tcpdump C) + +# +# For checking if a compiler flag works and adding it if it does. +# +include(CheckCCompilerFlag) +macro(check_and_add_compiler_option _option) + message(STATUS "Checking C compiler flag ${_option}") + string(REPLACE "=" "-" _temp_option_variable ${_option}) + string(REGEX REPLACE "^-" "" _option_variable ${_temp_option_variable}) + check_c_compiler_flag("${_option}" ${_option_variable}) + if(${${_option_variable}}) + set(C_ADDITIONAL_FLAGS "${C_ADDITIONAL_FLAGS} ${_option}") + endif() +endmacro() + +# +# If we're building with Visual Studio, we require Visual Studio 2015, +# in order to get sufficient C99 compatibility. Check for that. +# +# If not, try the appropriate flag for the compiler to enable C99 +# features. +# +set(C_ADDITIONAL_FLAGS "") +if(MSVC) + if(MSVC_VERSION LESS 1900) + message(FATAL_ERROR "Visual Studio 2015 or later is required") + endif() + + # + # Treat source files as being in UTF-8 with MSVC if it's not using + # the Clang front end. + # We assume that UTF-8 source is OK with other compilers and with + # MSVC if it's using the Clang front end. + # + if(NOT ${CMAKE_C_COMPILER} MATCHES "clang*") + set(C_ADDITIONAL_FLAGS "${C_ADDITIONAL_FLAGS} /utf-8") + endif(NOT ${CMAKE_C_COMPILER} MATCHES "clang*") +else(MSVC) + # + # Try to enable as many C99 features as we can. + # At minimum, we want C++/C99-style // comments. + # + # Newer versions of compilers might default to supporting C99, but + # older versions may require a special flag. + # + # Prior to CMake 3.1, setting CMAKE_C_STANDARD will not have any effect, + # so, unless and until we require CMake 3.1 or later, we have to do it + # ourselves on pre-3.1 CMake, so we just do it ourselves on all versions + # of CMake. + # + # Note: with CMake 3.1 through 3.5, the only compilers for which CMake + # handles CMAKE_C_STANDARD are GCC and Clang. 3.6 adds support only + # for Intel C; 3.9 adds support for PGI C, Sun C, and IBM XL C, and + # 3.10 adds support for Cray C and IAR C, but no version of CMake has + # support for HP C. Therefore, even if we use CMAKE_C_STANDARD with + # compilers for which CMake supports it, we may still have to do it + # ourselves on other compilers. + # + # See the CMake documentation for the CMAKE_<LANG>_COMPILER_ID variables + # for a list of compiler IDs. + # + # XXX - this just tests whether the option works and adds it if it does. + # We don't test whether it's necessary in order to get the C99 features + # that we use; if we ever have a user who tries to compile with a compiler + # that can't be made to support those features, we can add a test to make + # sure we actually *have* C99 support. + # + if(CMAKE_C_COMPILER_ID MATCHES "GNU" OR + CMAKE_C_COMPILER_ID MATCHES "Clang") + check_and_add_compiler_option("-std=gnu99") + elseif(CMAKE_C_COMPILER_ID MATCHES "XL") + # + # We want support for extensions picked up for GNU C compatibility, + # so we use -qlanglvl=extc99. + # + check_and_add_compiler_option("-qlanglvl=extc99") + elseif(CMAKE_C_COMPILER_ID MATCHES "HP") + check_and_add_compiler_option("-AC99") + elseif(CMAKE_C_COMPILER_ID MATCHES "Sun") + check_and_add_compiler_option("-xc99") + elseif(CMAKE_C_COMPILER_ID MATCHES "Intel") + check_and_add_compiler_option("-c99") + endif() +endif(MSVC) + +set(LIBRARY_NAME netdissect) + +################################################################### +# Parameters +################################################################### + +option(WITH_SMI "Build with libsmi, if available" ON) +option(WITH_CRYPTO "Build with OpenSSL/libressl libcrypto, if available" ON) +option(WITH_CAPSICUM "Build with Capsicum security functions, if available" ON) +option(WITH_CAP_NG "Use libcap-ng, if available" ON) +option(ENABLE_SMB "Build with the SMB dissector" OFF) + +# +# String parameters. Neither of them are set, initially; only if the +# user explicitly configures them are they set. +# +# WITH_CHROOT is STRING, not PATH, as the directory need not exist +# when CMake is run. +# +set(WITH_CHROOT CACHE STRING + "Directory to which to chroot when dropping privileges") +set(WITH_USER CACHE STRING + "User to whom to set the UID when dropping privileges") + +# +# By default, build universal with the appropriate set of architectures +# for the OS on which we're doing the build. +# +if(APPLE AND "${CMAKE_OSX_ARCHITECTURES}" STREQUAL "") + # + # Get the major version of Darwin. + # + string(REGEX MATCH "^([0-9]+)" SYSTEM_VERSION_MAJOR "${CMAKE_SYSTEM_VERSION}") + + if(SYSTEM_VERSION_MAJOR EQUAL 9) + # + # Leopard. Build for x86 and 32-bit PowerPC, with + # x86 first. (That's what Apple does.) + # + set(CMAKE_OSX_ARCHITECTURES "i386;ppc") + elseif(SYSTEM_VERSION_MAJOR EQUAL 10) + # + # Snow Leopard. Build for x86-64 and x86, with + # x86-64 first. (That's what Apple does.) + # + set(CMAKE_OSX_ARCHITECTURES "x86_64;i386") + endif() +endif() + +################################################################### +# Versioning +################################################################### + +# Get, parse, format and set tcpdump's version string from +# [tcpdump_root]/VERSION for later use. + +# Get MAJOR, MINOR, PATCH & SUFFIX +file(STRINGS ${tcpdump_SOURCE_DIR}/VERSION + PACKAGE_VERSION + LIMIT_COUNT 1 # Read only the first line +) + +###################################### +# Project settings +###################################### + +add_definitions(-DHAVE_CONFIG_H) + +include_directories( + ${CMAKE_CURRENT_BINARY_DIR} + ${tcpdump_SOURCE_DIR} +) + +if(MSVC) + add_definitions(-D__STDC__) + add_definitions(-D_CRT_SECURE_NO_WARNINGS) +endif(MSVC) + +if(MSVC) + if (USE_STATIC_RT) + MESSAGE(STATUS "Use STATIC runtime") + set(NAME_RT MT) + set (CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /MT") + set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /MT") + set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT") + set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd") + + set (CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_C_FLAGS_MINSIZEREL} /MT") + set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} /MT") + set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MT") + set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MTd") + else (USE_STATIC_RT) + MESSAGE(STATUS "Use DYNAMIC runtime") + set(NAME_RT MD) + set (CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /MD") + set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /MD") + set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MD") + set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MDd") + + set (CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_C_FLAGS_MINSIZEREL} /MD") + set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} /MD") + set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MD") + set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MDd") + endif (USE_STATIC_RT) +endif(MSVC) + +################################################################### +# Detect available platform features +################################################################### + +include(CMakePushCheckState) +include(CheckIncludeFile) +include(CheckIncludeFiles) +include(CheckFunctionExists) +include(CheckLibraryExists) +include(CheckSymbolExists) +include(CheckStructHasMember) +include(CheckVariableExists) +include(CheckTypeSize) + +# +# Header files. +# +check_include_file(fcntl.h HAVE_FCNTL_H) +check_include_file(rpc/rpc.h HAVE_RPC_RPC_H) +check_include_file(net/if.h HAVE_NET_IF_H) +if(HAVE_RPC_RPC_H) + check_include_files("rpc/rpc.h;rpc/rpcent.h" HAVE_RPC_RPCENT_H) +endif(HAVE_RPC_RPC_H) + +# +# Functions. +# +check_function_exists(strlcat HAVE_STRLCAT) +check_function_exists(strlcpy HAVE_STRLCPY) +check_function_exists(strdup HAVE_STRDUP) +check_function_exists(strsep HAVE_STRSEP) + +# +# Find library needed for gethostbyaddr. +# NOTE: if you hand check_library_exists as its last argument a variable +# that's been set, it skips the test, so we need different variables. +# +set(TCPDUMP_LINK_LIBRARIES "") +if(WIN32) + # + # We need winsock2.h and ws2tcpip.h. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES ws2_32) + check_symbol_exists(gethostbyaddr "winsock2.h;ws2tcpip.h" LIBWS2_32_HAS_GETHOSTBYADDR) + cmake_pop_check_state() + if(LIBWS2_32_HAS_GETHOSTBYADDR) + set(TCPDUMP_LINK_LIBRARIES ws2_32 ${TCPDUMP_LINK_LIBRARIES}) + else(LIBWS2_32_HAS_GETHOSTBYADDR) + message(FATAL_ERROR "gethostbyaddr is required, but wasn't found") + endif(LIBWS2_32_HAS_GETHOSTBYADDR) +else(WIN32) + check_function_exists(gethostbyaddr STDLIBS_HAVE_GETHOSTBYADDR) + if(NOT STDLIBS_HAVE_GETHOSTBYADDR) + check_library_exists(socket gethostbyaddr "" LIBSOCKET_HAS_GETHOSTBYADDR) + if(LIBSOCKET_HAS_GETHOSTBYADDR) + set(TCPDUMP_LINK_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} socket) + else(LIBSOCKET_HAS_GETHOSTBYADDR) + check_library_exists(nsl gethostbyaddr "" LIBNSL_HAS_GETHOSTBYADDR) + if(LIBNSL_HAS_GETHOSTBYADDR) + set(TCPDUMP_LINK_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} nsl) + else(LIBNSL_HAS_GETHOSTBYADDR) + message(FATAL_ERROR "gethostbyaddr is required, but wasn't found") + endif(LIBNSL_HAS_GETHOSTBYADDR) + endif(LIBSOCKET_HAS_GETHOSTBYADDR) + endif(NOT STDLIBS_HAVE_GETHOSTBYADDR) +endif(WIN32) + +# +# This may require additional libraries. +# +cmake_push_check_state() +set(CMAKE_REQUIRED_LIBRARIES ${TCPDUMP_LINK_LIBRARIES}) +check_function_exists(getservent STDLIBS_HAVE_GETSERVENT) +if(STDLIBS_HAVE_GETSERVENT) + set(HAVE_GETSERVENT TRUE) +else(STDLIBS_HAVE_GETSERVENT) + # + # Some platforms may need -lsocket for getservent. + # + set(CMAKE_REQUIRED_LIBRARIES socket ${TCPDUMP_LINK_LIBRARIES}) + check_function_exists(getservent LIBSOCKET_HAS_GETSERVENT) + if(LIBSOCKET_HAS_GETSERVENT) + set(HAVE_GETSERVENT TRUE) + set(TCPDUMP_LINK_LIBRARIES socket ${TCPDUMP_LINK_LIBRARIES}) + endif(LIBSOCKET_HAS_GETSERVENT) +endif(STDLIBS_HAVE_GETSERVENT) +cmake_pop_check_state() + +# +# Make sure we have vsnprintf() and snprintf(); we require them. +# We use check_symbol_exists(), as they aren't necessarily external +# functions - in Visual Studio, for example, they're inline functions +# calling a common external function. +# +check_symbol_exists(vsnprintf "stdio.h" HAVE_VSNPRINTF) +if(NOT HAVE_VSNPRINTF) + message(FATAL_ERROR "vsnprintf() is required but wasn't found") +endif(NOT HAVE_VSNPRINTF) +check_symbol_exists(snprintf "stdio.h" HAVE_SNPRINTF) +if(NOT HAVE_SNPRINTF) + message(FATAL_ERROR "snprintf() is required but wasn't found") +endif() + +check_function_exists(getopt_long HAVE_GETOPT_LONG) +check_function_exists(setlinebuf HAVE_SETLINEBUF) +# +# For Windows, don't need to waste time checking for fork() or vfork(). +# +if(NOT WIN32) + check_function_exists(fork HAVE_FORK) + check_function_exists(vfork HAVE_VFORK) +endif(NOT WIN32) + +# +# Some platforms may need -lnsl for getrpcbynumber. +# +cmake_push_check_state() +set(CMAKE_REQUIRED_LIBRARIES ${TCPDUMP_LINK_LIBRARIES}) +check_function_exists(getrpcbynumber STDLIBS_HAVE_GETRPCBYNUMBER) +if(STDLIBS_HAVE_GETRPCBYNUMBER) + set(HAVE_GETRPCBYNUMBER TRUE) +else(STDLIBS_HAVE_GETRPCBYNUMBER) + set(CMAKE_REQUIRED_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} nsl) + check_function_exists(getrpcbynumber LIBNSL_HAS_GETRPCBYNUMBER) + if(LIBNSL_HAS_GETRPCBYNUMBER) + set(HAVE_GETRPCBYNUMBER TRUE) + set(TCPDUMP_LINK_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} nsl) + endif(LIBNSL_HAS_GETRPCBYNUMBER) +endif(STDLIBS_HAVE_GETRPCBYNUMBER) +cmake_pop_check_state() + +# +# This requires the libraries we require, as ether_ntohost might be +# in one of those libraries. That means we have to do this after +# we check for those libraries. +# +# You are in a twisty little maze of UN*Xes, all different. +# Some might not have ether_ntohost(). +# Some might have it and declare it in <net/ethernet.h>. +# Some might have it and declare it in <netinet/ether.h> +# Some might have it and declare it in <sys/ethernet.h>. +# Some might have it and declare it in <arpa/inet.h>. +# Some might have it and declare it in <netinet/if_ether.h>. +# Some might have it and not declare it in any header file. +# +# Before you is a C compiler. +# +cmake_push_check_state() +set(CMAKE_REQUIRED_LIBRARIES ${TCPDUMP_LINK_LIBRARIES}) +check_function_exists(ether_ntohost HAVE_ETHER_NTOHOST) +if(HAVE_ETHER_NTOHOST) + # + # OK, we have ether_ntohost(). We don't check whether it's buggy, + # as we assume any system that has CMake is likely to be new enough + # that, if it has ether_ntohost(), whatever bug is checked for in + # autotools is fixed; we just decide to use it. + # + set(USE_ETHER_NTOHOST TRUE) + + # + # Is it declared in <net/ethernet.h>? + # + # This test fails if we don't have <net/ethernet.h> or if we do + # but it doesn't declare ether_ntohost(). + # + check_symbol_exists(ether_ntohost net/ethernet.h NET_ETHERNET_H_DECLARES_ETHER_NTOHOST) + if(NET_ETHERNET_H_DECLARES_ETHER_NTOHOST) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_NTOHOST TRUE) + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_NTOHOST) + # + # No - how about <netinet/ether.h>, as on Linux? + # + # This test fails if we don't have <netinet/ether.h> + # or if we do but it doesn't declare ether_ntohost(). + # + check_symbol_exists(ether_ntohost netinet/ether.h NETINET_ETHER_H_DECLARES_ETHER_NTOHOST) + if(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_NTOHOST TRUE) + endif() + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_NTOHOST) + # + # No - how about <sys/ethernet.h>, as on Solaris 10 and later? + # + # This test fails if we don't have <sys/ethernet.h> + # or if we do but it doesn't declare ether_ntohost(). + # + check_symbol_exists(ether_ntohost sys/ethernet.h SYS_ETHERNET_H_DECLARES_ETHER_NTOHOST) + if(SYS_ETHERNET_H_DECLARES_ETHER_NTOHOST) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_NTOHOST TRUE) + endif() + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_NTOHOST) + # + # No, how about <arpa/inet.h>, as on AIX? + # + # This test fails if we don't have <arpa/inet.h> + # or if we do but it doesn't declare ether_ntohost(). + # + check_symbol_exists(ether_ntohost arpa/inet.h ARPA_INET_H_DECLARES_ETHER_NTOHOST) + if(ARPA_INET_H_DECLARES_ETHER_NTOHOST) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_NTOHOST TRUE) + endif() + endif() + # + # Did that succeed? + # + if(NOT HAVE_DECL_ETHER_NTOHOST) + # + # No, how about <netinet/if_ether.h>? + # On some platforms, it requires <net/if.h> and + # <netinet/in.h>, and we always include it with + # both of them, so test it with both of them. + # + # This test fails if we don't have <netinet/if_ether.h> + # and the headers we include before it, or if we do but + # <netinet/if_ether.h> doesn't declare ether_ntohost(). + # + check_symbol_exists(ether_ntohost "sys/types.h;sys/socket.h;net/if.h;netinet/in.h;netinet/if_ether.h" NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST) + if(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST) + # + # Yes - we have it declared. + # + set(HAVE_DECL_ETHER_NTOHOST TRUE) + endif() + endif() + # + # After all that, is ether_ntohost() declared? + # + if(NOT HAVE_DECL_ETHER_NTOHOST) + # + # No, we'll have to declare it ourselves. + # Do we have "struct ether_addr" if we include<netinet/if_ether.h>? + # + check_struct_has_member("struct ether_addr" octet "sys/types.h;sys/socket.h;net/if.h;netinet/in.h;netinet/if_ether.h" HAVE_STRUCT_ETHER_ADDR) + endif() +endif() +cmake_pop_check_state() + +# +# Data types. +# +# XXX - there's no check_struct() macro that's like check_struct_has_member() +# except that it only checks for the existence of the structure type, +# so we use check_struct_has_member() and look for ss_family. +# + +# +# Check for IPv6 support. +# We just check for AF_INET6 and struct in6_addr. +# +cmake_push_check_state() +if(WIN32) + set(CMAKE_EXTRA_INCLUDE_FILES sys/types.h ws2tcpip.h) + check_symbol_exists(AF_INET6 "sys/types.h;ws2tcpip.h" HAVE_AF_INET6) +else(WIN32) + set(CMAKE_EXTRA_INCLUDE_FILES sys/types.h sys/socket.h netinet/in.h) + check_symbol_exists(AF_INET6 "sys/types.h;sys/socket.h;netinet/in.h" HAVE_AF_INET6) +endif(WIN32) +check_type_size("struct in6_addr" HAVE_STRUCT_IN6_ADDR) +cmake_pop_check_state() +if(HAVE_AF_INET6 AND HAVE_STRUCT_IN6_ADDR) + set(HAVE_OS_IPV6_SUPPORT TRUE) +endif(HAVE_AF_INET6 AND HAVE_STRUCT_IN6_ADDR) + +###################################### +# External dependencies +###################################### + +# +# libpcap/WinPcap/Npcap. +# First, find it. +# +find_package(PCAP REQUIRED) +include_directories(${PCAP_INCLUDE_DIRS}) + +cmake_push_check_state() + +# +# Now check headers. +# +set(CMAKE_REQUIRED_INCLUDES ${PCAP_INCLUDE_DIRS}) + +# +# Check whether we have pcap/pcap-inttypes.h. +# If we do, we use that to get the C99 types defined. +# +check_include_file(pcap/pcap-inttypes.h HAVE_PCAP_PCAP_INTTYPES_H) + +# +# Check for various functions in libpcap/WinPcap/Npcap. +# +cmake_push_check_state() +set(CMAKE_REQUIRED_LIBRARIES ${PCAP_LIBRARIES}) + +# +# Check for "pcap_list_datalinks()" and use a substitute version if +# it's not present. If it is present, check for "pcap_free_datalinks()"; +# if it's not present, we don't replace it for now. (We could do so +# on UN*X, but not on Windows, where hilarity ensues if a program +# built with one version of the MSVC support library tries to free +# something allocated by a library built with another version of +# the MSVC support library.) +# +check_function_exists(pcap_list_datalinks HAVE_PCAP_LIST_DATALINKS) +if(HAVE_PCAP_LIST_DATALINKS) + check_function_exists(pcap_free_datalinks HAVE_PCAP_FREE_DATALINKS) +endif(HAVE_PCAP_LIST_DATALINKS) + +# +# Check for "pcap_datalink_name_to_val()", and use a substitute +# version if it's not present. If it is present, check for +# "pcap_datalink_val_to_description()", and if we don't have it, +# use a substitute version. +# +check_function_exists(pcap_datalink_name_to_val HAVE_PCAP_DATALINK_NAME_TO_VAL) +if(HAVE_PCAP_DATALINK_NAME_TO_VAL) + check_function_exists(pcap_datalink_val_to_description HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION) +endif(HAVE_PCAP_DATALINK_NAME_TO_VAL) + +# +# Check for "pcap_set_datalink()"; you can't substitute for it if +# it's absent (it has hooks into libpcap), so just define the +# HAVE_ value if it's there. +# +check_function_exists(pcap_set_datalink HAVE_PCAP_SET_DATALINK) + +# +# Check for "pcap_breakloop()"; you can't substitute for it if +# it's absent (it has hooks into the live capture routines), +# so just define the HAVE_ value if it's there. +# +check_function_exists(pcap_breakloop HAVE_PCAP_BREAKLOOP) + +# +# Check for "pcap_dump_ftell()"; we use a substitute version +# if it's not present. +# +check_function_exists(pcap_dump_ftell HAVE_PCAP_DUMP_FTELL) + +# +# Do we have the new open API? Check for pcap_create() and for +# pcap_statustostr(), and assume that, if we have both of them, +# we also have pcap_activate() and the other new routines +# introduced in libpcap 1.0.0. (We check for pcap_statustostr() +# as well, because WinPcap 4.1.3 screwed up and exported pcap_create() +# but not other routines such as pcap_statustostr(), even though it +# defined them and even though you really want pcap_statustostr() to +# get strings corresponding to some of the status returns from the +# new routines.) +# +check_function_exists(pcap_statustostr HAVE_PCAP_STATUSTOSTR) +# +# If we don't have pcap_statustostr(), don't check for pcap_create(), +# so we pretend we don't have it. +# +if(HAVE_PCAP_STATUSTOSTR) + check_function_exists(pcap_create HAVE_PCAP_CREATE) +endif(HAVE_PCAP_STATUSTOSTR) +if(HAVE_PCAP_CREATE) + # + # OK, do we have pcap_set_tstamp_type? If so, assume we have + # pcap_list_tstamp_types and pcap_free_tstamp_types as well. + # + check_function_exists(pcap_set_tstamp_type HAVE_PCAP_SET_TSTAMP_TYPE) + + # + # And do we have pcap_set_tstamp_precision? If so, we assume + # we also have pcap_open_offline_with_tstamp_precision. + # + check_function_exists(pcap_set_tstamp_precision HAVE_PCAP_SET_TSTAMP_PRECISION) +endif(HAVE_PCAP_CREATE) + +# +# Check for a miscellaneous collection of functions which we use +# if we have them. +# +check_function_exists(pcap_findalldevs HAVE_PCAP_FINDALLDEVS) +if(HAVE_PCAP_FINDALLDEVS) + # + # Check for libpcap having pcap_findalldevs() but the pcap.h header + # not having pcap_if_t; some versions of Mac OS X shipped with pcap.h + # from 0.6 and libpcap 0.8, so that libpcap had pcap_findalldevs but + # pcap.h didn't have pcap_if_t. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_INCLUDES ${PCAP_INCLUDE_DIRS}) + set(CMAKE_EXTRA_INCLUDE_FILES pcap.h) + check_type_size(pcap_if_t PCAP_IF_T) + cmake_pop_check_state() +endif(HAVE_PCAP_FINDALLDEVS) +check_function_exists(pcap_dump_flush HAVE_PCAP_DUMP_FLUSH) +check_function_exists(pcap_lib_version HAVE_PCAP_LIB_VERSION) +if(NOT HAVE_PCAP_LIB_VERSION) + # Check for the pcap_version string variable and set HAVE_PCAP_VERSION +endif(NOT HAVE_PCAP_LIB_VERSION) +check_function_exists(pcap_setdirection HAVE_PCAP_SETDIRECTION) +check_function_exists(pcap_set_immediate_mode HAVE_PCAP_SET_IMMEDIATE_MODE) +check_function_exists(pcap_dump_ftell64 HAVE_PCAP_DUMP_FTELL64) +check_function_exists(pcap_open HAVE_PCAP_OPEN) +check_function_exists(pcap_findalldevs_ex HAVE_PCAP_FINDALLDEVS_EX) + +# +# On Windows, check for pcap_wsockinit(); if we don't have it, check for +# wsockinit(). +# +if(WIN32) + check_function_exists(pcap_wsockinit HAVE_PCAP_WSOCKINIT) + if(NOT HAVE_PCAP_WSOCKINIT) + check_function_exists(wsockinit HAVE_WSOCKINIT) + endif(NOT HAVE_PCAP_WSOCKINIT) +endif(WIN32) + +# +# Check for special debugging functions +# +check_function_exists(pcap_set_parser_debug HAVE_PCAP_SET_PARSER_DEBUG) +if(NOT HAVE_PCAP_SET_PARSER_DEBUG) + # Check whether libpcap defines pcap_debug or yydebug + check_variable_exists(pcap_debug HAVE_PCAP_DEBUG) + if(NOT HAVE_PCAP_DEBUG) + check_variable_exists(yydebug HAVE_YYDEBUG) + endif(NOT HAVE_PCAP_DEBUG) +endif(NOT HAVE_PCAP_SET_PARSER_DEBUG) + +check_function_exists(pcap_set_optimizer_debug HAVE_PCAP_SET_OPTIMIZER_DEBUG) +check_function_exists(bpf_dump HAVE_BPF_DUMP) + +cmake_pop_check_state() + +# +# We have libpcap. +# +include_directories(SYSTEM ${PCAP_INCLUDE_DIRS}) +set(TCPDUMP_LINK_LIBRARIES ${PCAP_LIBRARIES} ${TCPDUMP_LINK_LIBRARIES}) + +# +# Optional libraries. +# + +# +# libsmi. +# +if(WITH_SMI) + find_package(SMI) + if(SMI_FOUND) + include_directories(SYSTEM ${SMI_INCLUDE_DIRS}) + set(TCPDUMP_LINK_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} ${SMI_LIBRARIES}) + set(USE_LIBSMI ON) + endif(SMI_FOUND) +endif(WITH_SMI) + +# +# OpenSSL/libressl libcrypto. +# +if(WITH_CRYPTO) + find_package(CRYPTO) + if(CRYPTO_FOUND) + # + # Check for some headers and functions. + # + check_include_file(openssl/evp.h HAVE_OPENSSL_EVP_H) + + # + # 1) do we have EVP_CIPHER_CTX_new? + # If so, we use it to allocate an EVP_CIPHER_CTX, as + # EVP_CIPHER_CTX may be opaque; otherwise, we allocate + # it ourselves. + # + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES "${CRYPTO_LIBRARIES}") + + check_function_exists(EVP_CIPHER_CTX_new HAVE_EVP_CIPHER_CTX_NEW) + + # + # 2) do we have EVP_DecryptInit_ex()? + # If so, we use it, because we need to be able to make two + # "initialize the cipher" calls, one with the cipher and key, + # and one with the IV, and, as of OpenSSL 1.1, You Can't Do That + # with EVP_DecryptInit(), because a call to EVP_DecryptInit() will + # unconditionally clear the context, and if you don't supply a + # cipher, it'll clear the cipher, rendering the context unusable + # and causing a crash. + # + check_function_exists(EVP_DecryptInit_ex HAVE_EVP_DECRYPTINIT_EX) + + cmake_pop_check_state() + + # + # We have libcrypto. + # + include_directories(SYSTEM ${CRYPTO_INCLUDE_DIRS}) + set(TCPDUMP_LINK_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} ${CRYPTO_LIBRARIES}) + set(HAVE_LIBCRYPTO ON) + endif(CRYPTO_FOUND) +endif(WITH_CRYPTO) + +# +# Capsicum sandboxing. +# Some of this is in the system library, some of it is in other libraries. +# +if(WITH_CAPSICUM) + check_include_files("sys/capsicum.h" HAVE_SYS_CAPSICUM_H) + if(HAVE_SYS_CAPSICUM_H) + check_function_exists(cap_enter HAVE_CAP_ENTER) + check_function_exists(cap_rights_limit HAVE_CAP_RIGHTS_LIMIT) + check_function_exists(cap_ioctls_limit HAVE_CAP_IOCTLS_LIMIT) + check_function_exists(openat HAVE_OPENAT) + if(HAVE_CAP_ENTER AND HAVE_CAP_RIGHTS_LIMIT AND + HAVE_CAP_IOCTLS_LIMIT AND HAVE_OPENAT) + # + # OK, we have the functions we need to support Capsicum. + # + set(HAVE_CAPSICUM TRUE) + + # + # OK, can we use Casper? + # + check_library_exists(casper cap_init "" HAVE_CAP_INIT) + if(HAVE_CAP_INIT) + cmake_push_check_state() + set(CMAKE_REQUIRED_LIBRARIES casper) + check_library_exists(cap_dns cap_gethostbyaddr "" HAVE_CAP_GETHOSTBYADDR) + cmake_pop_check_state() + if(HAVE_CAP_GETHOSTBYADDR) + set(HAVE_CASPER TRUE) + set(TCPDUMP_LINK_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} casper cap_dns) + endif(HAVE_CAP_GETHOSTBYADDR) + endif(HAVE_CAP_INIT) + endif(HAVE_CAP_ENTER AND HAVE_CAP_RIGHTS_LIMIT AND + HAVE_CAP_IOCTLS_LIMIT AND HAVE_OPENAT) + endif(HAVE_SYS_CAPSICUM_H) +endif(WITH_CAPSICUM) + +# +# libcap-ng. +# +if(WITH_CAP_NG) + check_include_file(cap-ng.h HAVE_CAP_NG_H) + check_library_exists(cap-ng capng_change_id "" HAVE_LIBCAP_NG) + if(HAVE_LIBCAP_NG) + set(TCPDUMP_LINK_LIBRARIES ${TCPDUMP_LINK_LIBRARIES} cap-ng) + endif(HAVE_LIBCAP_NG) +endif(WITH_CAP_NG) + +################################################################### +# Warning options +################################################################### + +# +# Check and add warning options if we have a .devel file. +# +if(EXISTS ${CMAKE_SOURCE_DIR}/.devel OR EXISTS ${CMAKE_BINARY_DIR}/.devel) + # + # Warning options. + # + if(MSVC AND NOT ${CMAKE_C_COMPILER} MATCHES "clang*") + # + # MSVC, with Microsoft's front end and code generator. + # "MSVC" is also set for Microsoft's compiler with a Clang + # front end and their code generator ("Clang/C2"), so we + # check for clang.exe and treat that differently. + # + check_and_add_compiler_option(-Wall) + # + # Disable some pointless warnings that /Wall turns on. + # + # Unfortunately, MSVC does not appear to have an equivalent + # to "__attribute__((unused))" to mark a particular function + # parameter as being known to be unused, so that the compiler + # won't warn about it (for example, the function might have + # that parameter because a pointer to it is being used, and + # the signature of that function includes that parameter). + # C++ lets you give a parameter a type but no name, but C + # doesn't have that. + # + check_and_add_compiler_option(-wd4100) + # + # In theory, we care whether somebody uses f() rather than + # f(void) to declare a function with no arguments, but, in + # practice, there are places in the Windows header files + # that appear to do that, so we squelch that warning. + # + check_and_add_compiler_option(-wd4255) + # + # Windows FD_SET() generates this, so we suppress it. + # + check_and_add_compiler_option(-wd4548) + # + # Perhaps testing something #defined to be 0 with #ifdef is an + # error, and it should be tested with #if, but perhaps it's + # not, and Microsoft does that in its headers, so we squelch + # that warning. + # + check_and_add_compiler_option(-wd4574) + # + # The Windows headers also test not-defined values in #if, so + # we don't want warnings about that, either. + # + check_and_add_compiler_option(-wd4668) + # + # We do *not* care whether some function is, or isn't, going to be + # expanded inline. + # + check_and_add_compiler_option(-wd4710) + check_and_add_compiler_option(-wd4711) + # + # We do *not* care whether we're adding padding bytes after + # structure members. + # + check_and_add_compiler_option(-wd4820) + # + # We do *not* care about every single place the compiler would + # have inserted Spectre mitigation if only we had told it to + # do so with /Qspectre. I guess the theory is that it's seeing + # bounds checks that would prevent out-of-bounds loads and that + # those out-of-bounds loads could be done speculatively and that + # the Spectre attack could detect the value of the out-of-bounds + # data *if* it's within our address space, but unless I'm + # missing something I don't see that as being any form of + # security hole. + # + # XXX - add /Qspectre if that is really worth doing. + # + check_and_add_compiler_option(-wd5045) + # + # We do *not* care whether a structure had padding added at + # the end because of __declspec(align) - *we* don't use + # __declspec(align), because the only structures whose layout + # we precisely specify are those that get overlayed on packet + # data, and in those every element is an array of octets so + # that we have full control over the size and aligmnet, and, + # apparently, jmp_buf has such a declaration on x86, meaning + # that everything that includes netdissect.h, i.e. almost every + # file in tcpdump, gets a warning. + # + check_and_add_compiler_option(-wd4324) + else() + # + # Other compilers, including MSVC with a Clang front end and + # Microsoft's code generator. We currently treat them as if + # they might support GCC-style -W options. + # + check_and_add_compiler_option(-W) + check_and_add_compiler_option(-Wall) + check_and_add_compiler_option(-Wassign-enum) + check_and_add_compiler_option(-Wcast-qual) + check_and_add_compiler_option(-Wmissing-prototypes) + check_and_add_compiler_option(-Wmissing-variable-declarations) + check_and_add_compiler_option(-Wold-style-definition) + check_and_add_compiler_option(-Wpedantic) + check_and_add_compiler_option(-Wpointer-arith) + check_and_add_compiler_option(-Wpointer-sign) + check_and_add_compiler_option(-Wshadow) + check_and_add_compiler_option(-Wsign-compare) + check_and_add_compiler_option(-Wstrict-prototypes) + check_and_add_compiler_option(-Wunreachable-code-return) + check_and_add_compiler_option(-Wused-but-marked-unused) + check_and_add_compiler_option(-Wwrite-strings) + endif() +endif() + +# +# Extra compiler options for the build matrix scripts to request -Werror or +# its equivalent if required. The CMake variable name cannot be CFLAGS +# because that is already used for a different purpose in CMake. Example +# usage: cmake -DEXTRA_CFLAGS='-Wall -Wextra -Werror' ... +# +if(NOT "${EXTRA_CFLAGS}" STREQUAL "") + foreach(_extra_cflag ${EXTRA_CFLAGS}) + check_and_add_compiler_option("${_extra_cflag}") + endforeach(_extra_cflag) + message(STATUS "Added extra compile options (${EXTRA_CFLAGS})") +endif() + +###################################### +# Input files +###################################### + +if(ENABLE_SMB) + # + # We allow the SMB dissector to be omitted. + # + set(LOCALSRC ${LOCALSRC} + print-smb.c + smbutil.c) +endif(ENABLE_SMB) + +set(NETDISSECT_SOURCE_LIST_C + addrtoname.c + addrtostr.c + af.c + ascii_strcasecmp.c + checksum.c + cpack.c + gmpls.c + in_cksum.c + ipproto.c + l2vpn.c + machdep.c + netdissect.c + netdissect-alloc.c + nlpid.c + oui.c + ntp.c + parsenfsfh.c + print.c + print-802_11.c + print-802_15_4.c + print-ah.c + print-ahcp.c + print-aodv.c + print-aoe.c + print-ap1394.c + print-arcnet.c + print-arista.c + print-arp.c + print-ascii.c + print-atalk.c + print-atm.c + print-babel.c + print-bcm-li.c + print-beep.c + print-bfd.c + print-bgp.c + print-bootp.c + print-brcmtag.c + print-bt.c + print-calm-fast.c + print-carp.c + print-cdp.c + print-cfm.c + print-chdlc.c + print-cip.c + print-cnfp.c + print-dccp.c + print-decnet.c + print-dhcp6.c + print-domain.c + print-dsa.c + print-dtp.c + print-dvmrp.c + print-eap.c + print-egp.c + print-eigrp.c + print-enc.c + print-esp.c + print-ether.c + print-fddi.c + print-forces.c + print-fr.c + print-frag6.c + print-ftp.c + print-geneve.c + print-geonet.c + print-gre.c + print-hncp.c + print-hsrp.c + print-http.c + print-icmp.c + print-icmp6.c + print-igmp.c + print-igrp.c + print-ip-demux.c + print-ip.c + print-ip6.c + print-ip6opts.c + print-ipcomp.c + print-ipfc.c + print-ipnet.c + print-ipoib.c + print-ipx.c + print-isakmp.c + print-isoclns.c + print-juniper.c + print-krb.c + print-l2tp.c + print-lane.c + print-ldp.c + print-lisp.c + print-llc.c + print-lldp.c + print-lmp.c + print-loopback.c + print-lspping.c + print-lwapp.c + print-lwres.c + print-m3ua.c + print-macsec.c + print-mobile.c + print-mobility.c + print-mpcp.c + print-mpls.c + print-mptcp.c + print-msdp.c + print-msnlb.c + print-nflog.c + print-nfs.c + print-nsh.c + print-ntp.c + print-null.c + print-olsr.c + print-openflow-1.0.c + print-openflow-1.3.c + print-openflow.c + print-ospf.c + print-ospf6.c + print-otv.c + print-pflog.c + print-pgm.c + print-pim.c + print-pktap.c + print-ppi.c + print-ppp.c + print-pppoe.c + print-pptp.c + print-ptp.c + print-radius.c + print-raw.c + print-realtek.c + print-resp.c + print-rip.c + print-ripng.c + print-rpki-rtr.c + print-rsvp.c + print-rt6.c + print-rtsp.c + print-rx.c + print-sctp.c + print-sflow.c + print-sip.c + print-sl.c + print-sll.c + print-slow.c + print-smtp.c + print-snmp.c + print-someip.c + print-ssh.c + print-stp.c + print-sunatm.c + print-sunrpc.c + print-symantec.c + print-syslog.c + print-tcp.c + print-telnet.c + print-tftp.c + print-timed.c + print-tipc.c + print-token.c + print-udld.c + print-udp.c + print-unsupported.c + print-usb.c + print-vjc.c + print-vqp.c + print-vrrp.c + print-vsock.c + print-vtp.c + print-vxlan-gpe.c + print-vxlan.c + print-wb.c + print-whois.c + print-zep.c + print-zephyr.c + print-zeromq.c + ${LOCALSRC} + signature.c + strtoaddr.c + util-print.c +) + +# +# Replace missing functions +# +foreach(FUNC strlcat strlcpy strdup strsep getservent getopt_long) + string(TOUPPER ${FUNC} FUNC_UPPERCASE) + set(HAVE_FUNC_UPPERCASE HAVE_${FUNC_UPPERCASE}) + if(NOT ${HAVE_FUNC_UPPERCASE}) + set(NETDISSECT_SOURCE_LIST_C ${NETDISSECT_SOURCE_LIST_C} missing/${FUNC}.c) + endif() +endforeach() + +add_library(netdissect STATIC + ${NETDISSECT_SOURCE_LIST_C} +) +if(NOT C_ADDITIONAL_FLAGS STREQUAL "") + set_target_properties(netdissect PROPERTIES COMPILE_FLAGS ${C_ADDITIONAL_FLAGS}) +endif() + +set(TCPDUMP_SOURCE_LIST_C fptype.c tcpdump.c) + +if(NOT HAVE_BPF_DUMP) + set(TCPDUMP_SOURCE_LIST_C ${TCPDUMP_SOURCE_LIST_C} bpf_dump.c) +endif(NOT HAVE_BPF_DUMP) +if(NOT HAVE_PCAP_DUMP_FTELL) + set(TCPDUMP_SOURCE_LIST_C ${TCPDUMP_SOURCE_LIST_C} missing/pcap_dump_ftell.c) +endif(NOT HAVE_PCAP_DUMP_FTELL) + +if(NOT HAVE_PCAP_LIST_DATALINKS) + set(TCPDUMP_SOURCE_LIST_C ${TCPDUMP_SOURCE_LIST_C} missing/datalinks.c) +endif(NOT HAVE_PCAP_LIST_DATALINKS) + +if((NOT HAVE_PCAP_DATALINK_NAME_TO_VAL) OR (NOT HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION)) + set(TCPDUMP_SOURCE_LIST_C ${TCPDUMP_SOURCE_LIST_C} missing/dlnames.c) +endif((NOT HAVE_PCAP_DATALINK_NAME_TO_VAL) OR (NOT HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION)) + +set(PROJECT_SOURCE_LIST_C ${NETDISSECT_SOURCE_LIST_C} ${TCPDUMP_SOURCE_LIST_C}) + +file(GLOB PROJECT_SOURCE_LIST_H + *.h +) + +# +# Assume, by default, no support for shared libraries and V7/BSD +# convention for man pages (devices in section 4, file formats in +# section 5, miscellaneous info in section 7, administrative commands +# and daemons in section 8). Individual cases can override this. +# Individual cases can override this. +# +set(MAN_FILE_FORMATS 5) +set(MAN_MISC_INFO 7) +if(CMAKE_SYSTEM_NAME STREQUAL "AIX") + # Workaround to enable certain features + set(_SUN TRUE) +elseif(CMAKE_SYSTEM_NAME STREQUAL "HP-UX") + # + # Use System V conventions for man pages. + # + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) +elseif(CMAKE_SYSTEM_NAME STREQUAL "IRIX" OR CMAKE_SYSTEM_NAME STREQUAL "IRIX64") + # + # Use IRIX conventions for man pages; they're the same as the + # System V conventions, except that they use section 8 for + # administrative commands and daemons. + # + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) +elseif(CMAKE_SYSTEM_NAME STREQUAL "OSF1") + # + # DEC OSF/1, a/k/a Digital UNIX, a/k/a Tru64 UNIX. + # Use Tru64 UNIX conventions for man pages; they're the same as the + # System V conventions except that they use section 8 for + # administrative commands and daemons. + # + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) +elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS" AND CMAKE_SYSTEM_VERSION MATCHES "5[.][0-9.]*") + # + # SunOS 5.x. + # + if(CMAKE_SYSTEM_VERSION STREQUAL "5.12") + else() + # + # Use System V conventions for man pages. + # + set(MAN_FILE_FORMATS 4) + set(MAN_MISC_INFO 5) + endif() +endif() + +source_group("Source Files" FILES ${PROJECT_SOURCE_LIST_C}) +source_group("Header Files" FILES ${PROJECT_SOURCE_LIST_H}) + +###################################### +# Register targets +###################################### + +add_executable(tcpdump ${TCPDUMP_SOURCE_LIST_C}) +if(NOT C_ADDITIONAL_FLAGS STREQUAL "") + set_target_properties(tcpdump PROPERTIES COMPILE_FLAGS ${C_ADDITIONAL_FLAGS}) +endif() +target_link_libraries(tcpdump netdissect ${TCPDUMP_LINK_LIBRARIES}) + +###################################### +# Write out the config.h file +###################################### + +configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmakeconfig.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h) + +###################################### +# Install tcpdump and man pages +###################################### + +# +# "Define GNU standard installation directories", which actually +# are also defined, to some degree, by autotools, and at least +# some of which are general UN*X conventions. +# +include(GNUInstallDirs) + +set(MAN1_EXPAND tcpdump.1.in) + +if(WIN32) + # XXX TODO where to install on Windows? +else(WIN32) + install(TARGETS tcpdump DESTINATION bin) +endif(WIN32) + +# On UN*X, and on Windows when not using MSVC, process man pages and +# arrange that they be installed. +if(NOT MSVC) + # + # Man pages. + # + # For each section of the manual for which we have man pages + # that require macro expansion, do the expansion. + # + set(MAN1 "") + foreach(TEMPLATE_MANPAGE ${MAN1_EXPAND}) + string(REPLACE ".in" "" MANPAGE ${TEMPLATE_MANPAGE}) + configure_file(${CMAKE_SOURCE_DIR}/${TEMPLATE_MANPAGE} ${CMAKE_CURRENT_BINARY_DIR}/${MANPAGE} @ONLY) + set(MAN1 ${MAN1} ${CMAKE_CURRENT_BINARY_DIR}/${MANPAGE}) + endforeach(TEMPLATE_MANPAGE) + install(FILES ${MAN1} DESTINATION ${CMAKE_INSTALL_MANDIR}/man1) +endif(NOT MSVC) + +# uninstall target +configure_file( + "${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) + +# +# Tcpdump tests +# We try to find the Perl interpreter and, if we do, we have the check +# rule run tests/TESTrun with it, because just trying to run the TESTrun +# script as a command won't work on Windows. +# +find_program(PERL perl) +if(PERL) + message(STATUS "Found perl at ${PERL}") + add_custom_target(check + COMMAND ${PERL} ${CMAKE_SOURCE_DIR}/tests/TESTrun) +else() + message(STATUS "Didn't find perl") +endif() |