![Guy Harris](/assets/img/avatar_default.png)
With autotools, CMake, and nmake, if we have a function, #define HAVE_{function_name_in_all_caps}, otherwise don't #define it. If we provide our own version of a function in libwsutil, make sure we have a header that declares it, and *ONLY* include that header if HAVE_{function_name_in_all_caps} is *NOT* defined, so that we don't have the system declaration and our declaration colliding. Check for inet_aton, strncasecmp, and strptime with CMake, just as we do with autotools. Simplify the addition of {function_name_in_all_caps}_LO to libwsutil in autotools. Change-Id: Id5be5c73f79f81919a3a865324e400eca7b88889 Reviewed-on: https://code.wireshark.org/review/2903 Reviewed-by: Guy Harris <guy@alum.mit.edu>
139 lines
5.5 KiB
CMake
139 lines
5.5 KiB
CMake
# ConfigureChecks.cmake
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#
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# Wireshark - Network traffic analyzer
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# By Gerald Combs <gerald@wireshark.org>
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# Copyright 1998 Gerald Combs
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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include(CMakePushCheckState)
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#check system for includes
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include(CheckIncludeFile)
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check_include_file("arpa/inet.h" HAVE_ARPA_INET_H)
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check_include_file("arpa/nameser.h" HAVE_ARPA_NAMESER_H)
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check_include_file("direct.h" HAVE_DIRECT_H)
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check_include_file("dirent.h" HAVE_DIRENT_H)
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check_include_file("dlfcn.h" HAVE_DLFCN_H)
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check_include_file("fcntl.h" HAVE_FCNTL_H)
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check_include_file("getopt.h" HAVE_GETOPT_H)
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check_include_file("grp.h" HAVE_GRP_H)
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check_include_file("inttypes.h" HAVE_INTTYPES_H)
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check_include_file("memory.h" HAVE_MEMORY_H)
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check_include_file("netinet/in.h" HAVE_NETINET_IN_H)
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check_include_file("netdb.h" HAVE_NETDB_H)
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# We need to set the path to Wpdpack in order to find Ntddndis.h
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#cmake_push_check_state()
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#set(CMAKE_REQUIRED_INCLUDES %{PCAP_INCLUDE_DIRS})
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#check_include_file("Ntddndis.h" HAVE_NTDDNDIS_H)
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#cmake_pop_check_state()
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check_include_file("portaudio.h" HAVE_PORTAUDIO_H)
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check_include_file("pwd.h" HAVE_PWD_H)
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check_include_file("stdarg.h" HAVE_STDARG_H)
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check_include_file("stddef.h" HAVE_STDDEF_H)
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check_include_file("stdint.h" HAVE_STDINT_H)
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check_include_file("stdlib.h" HAVE_STDLIB_H)
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check_include_file("strings.h" HAVE_STRINGS_H)
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check_include_file("string.h" HAVE_STRING_H)
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check_include_file("sys/ioctl.h" HAVE_SYS_IOCTL_H)
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check_include_file("sys/param.h" HAVE_SYS_PARAM_H)
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check_include_file("sys/socket.h" HAVE_SYS_SOCKET_H)
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check_include_file("sys/sockio.h" HAVE_SYS_SOCKIO_H)
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check_include_file("sys/stat.h" HAVE_SYS_STAT_H)
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check_include_file("sys/time.h" HAVE_SYS_TIME_H)
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check_include_file("sys/types.h" HAVE_SYS_TYPES_H)
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check_include_file("sys/utsname.h" HAVE_SYS_UTSNAME_H)
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check_include_file("sys/wait.h" HAVE_SYS_WAIT_H)
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check_include_file("unistd.h" HAVE_UNISTD_H)
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check_include_file("windows.h" HAVE_WINDOWS_H)
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check_include_file("winsock2.h" HAVE_WINSOCK2_H)
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#Functions
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include(CheckFunctionExists)
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check_function_exists("chown" HAVE_CHOWN)
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cmake_push_check_state()
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#
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# XXX - this is *not* finding dladdr() on OS X (at least not on
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# Mountain Lion), even though it's available; autoconf does find
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# it. The dl* functions can be tricky, in that they might be
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# exported by the run-time linker rather than by any library,
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# so the only way to check for it that might work is "can I link
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# a program that calls this function?", not, for example, "do
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# any of these libraries define this function?"
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#
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set(CMAKE_REQUIRED_LIBRARIES %{CMAKE_DL_LIBS})
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check_function_exists("dladdr" HAVE_DLADDR)
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cmake_pop_check_state()
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check_function_exists("gethostbyname2" HAVE_GETHOSTBYNAME2)
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check_function_exists("getopt" HAVE_GETOPT)
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check_function_exists("getprotobynumber" HAVE_GETPROTOBYNUMBER)
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check_function_exists("inet_aton" HAVE_INET_ATON)
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check_function_exists("inet_ntop" HAVE_INET_NTOP_PROTO)
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check_function_exists("issetugid" HAVE_ISSETUGID)
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check_function_exists("mmap" HAVE_MMAP)
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check_function_exists("mprotect" HAVE_MPROTECT)
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check_function_exists("mkdtemp" HAVE_MKDTEMP)
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check_function_exists("mkstemp" HAVE_MKSTEMP)
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check_function_exists("setresgid" HAVE_SETRESGID)
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check_function_exists("setresuid" HAVE_SETRESUID)
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#
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# Windows doesn't have strncasecmp, but does have stricmp, which has
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# the same signature and behavior. We #define strncasecmp to stricmp
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# on Windows.
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#
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if(WIN32)
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check_function_exists("stricmp" HAVE_STRNCASECMP)
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else()
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check_function_exists("strncasecmp" HAVE_STRNCASECMP)
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endif()
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check_function_exists("strptime" HAVE_STRPTIME)
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check_function_exists("sysconf" HAVE_SYSCONF)
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#Struct members
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include(CheckStructHasMember)
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check_struct_has_member("struct sockaddr" sa_len sys/socket.h HAVE_SA_LEN)
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check_struct_has_member("struct stat" st_flags sys/stat.h HAVE_ST_FLAGS)
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check_struct_has_member("struct tm" tm_zone time.h HAVE_TM_ZONE)
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#Symbols but NOT enums or types
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include(CheckSymbolExists)
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check_symbol_exists(tzname "time.h" HAVE_TZNAME)
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# Check for stuff that isn't testable via the tests above
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#include(CheckCSourceCompiles)
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check_c_source_compiles(
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"#include <linux/nl80211.h>
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int main() {
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enum nl80211_commands x = NL80211_CMD_SET_CHANNEL;
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}"
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HAVE_NL80211_CMD_SET_CHANNEL
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)
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check_c_source_compiles(
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"#include <linux/nl80211.h>
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int main() {
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int x = NL80211_FREQUENCY_ATTR_MAX_TX_POWER;
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x = NL80211_ATTR_SUPPORTED_IFTYPES;
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x = NL80211_ATTR_SUPPORTED_COMMANDS;
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x = NL80211_ATTR_WIPHY_FREQ;
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x = NL80211_CHAN_NO_HT;
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}"
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HAVE_NL80211
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)
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