ConfigureChecks.cmake

   1 include(CheckIncludeFile)
   2 include(CheckSymbolExists)
   3 include(CheckFunctionExists)
   4 include(CheckLibraryExists)
   5 include(CheckTypeSize)
   6 include(CheckStructHasMember)
   7 include(CheckPrototypeDefinition)
   8 include(TestBigEndian)
   9
  10 set(SOCKET_WRAPPER_PACKAGE ${PROJECT_NAME})
  11 set(SOCKET_WRAPPER_VERSION ${PROJECT_VERSION})
  12
  13 set(BINARYDIR ${CMAKE_BINARY_DIR})
  14 set(SOURCEDIR ${CMAKE_SOURCE_DIR})
  15
  16 function(COMPILER_DUMPVERSION _OUTPUT_VERSION)
  17     # Remove whitespaces from the argument.
  18     # This is needed for CC="ccache gcc" cmake ..
  19     string(REPLACE " " "" _C_COMPILER_ARG "${CMAKE_C_COMPILER_ARG1}")
  20
  21     execute_process(
  22         COMMAND
  23             ${CMAKE_C_COMPILER} ${_C_COMPILER_ARG} -dumpversion
  24         OUTPUT_VARIABLE _COMPILER_VERSION
  25     )
  26
  27     string(REGEX REPLACE "([0-9])\\.([0-9])(\\.[0-9])?" "\\1\\2"
  28            _COMPILER_VERSION "${_COMPILER_VERSION}")
  29
  30     set(${_OUTPUT_VERSION} ${_COMPILER_VERSION} PARENT_SCOPE)
  31 endfunction()
  32
  33 if(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
  34     compiler_dumpversion(GNUCC_VERSION)
  35     if (NOT GNUCC_VERSION EQUAL 34)
  36         set(CMAKE_REQUIRED_FLAGS "-fvisibility=hidden")
  37         check_c_source_compiles(
  38 "void __attribute__((visibility(\"default\"))) test() {}
  39 int main(void){ return 0; }
  40 " WITH_VISIBILITY_HIDDEN)
  41         unset(CMAKE_REQUIRED_FLAGS)
  42     endif (NOT GNUCC_VERSION EQUAL 34)
  43 endif(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
  44
  45 # HEADERS
  46 check_include_file(netinet/tcp_fsm.h HAVE_NETINET_TCP_FSM_H)
  47 check_include_file(sys/filio.h HAVE_SYS_FILIO_H)
  48 check_include_file(sys/signalfd.h HAVE_SYS_SIGNALFD_H)
  49 check_include_file(sys/eventfd.h HAVE_SYS_EVENTFD_H)
  50 check_include_file(sys/timerfd.h HAVE_SYS_TIMERFD_H)
  51 check_include_file(sys/syscall.h HAVE_SYS_SYSCALL_H)
  52 check_include_file(gnu/lib-names.h HAVE_GNU_LIB_NAMES_H)
  53 check_include_file(rpc/rpc.h HAVE_RPC_RPC_H)
  54 check_include_file(syscall.h HAVE_SYSCALL_H)
  55
  56 # SYMBOLS
  57 set(CMAKE_REQUIRED_FLAGS -D_GNU_SOURCE)
  58 check_symbol_exists(program_invocation_short_name
  59                     "errno.h"
  60                     HAVE_PROGRAM_INVOCATION_SHORT_NAME)
  61 unset(CMAKE_REQUIRED_FLAGS)
  62
  63 # FUNCTIONS
  64 check_function_exists(strncpy HAVE_STRNCPY)
  65 check_function_exists(vsnprintf HAVE_VSNPRINTF)
  66 check_function_exists(snprintf HAVE_SNPRINTF)
  67 check_function_exists(signalfd HAVE_SIGNALFD)
  68 check_function_exists(eventfd HAVE_EVENTFD)
  69 check_function_exists(timerfd_create HAVE_TIMERFD_CREATE)
  70 check_function_exists(bindresvport HAVE_BINDRESVPORT)
  71 check_function_exists(accept4 HAVE_ACCEPT4)
  72 check_function_exists(open64 HAVE_OPEN64)
  73 check_function_exists(fopen64 HAVE_FOPEN64)
  74 check_function_exists(getprogname HAVE_GETPROGNAME)
  75 check_function_exists(getexecname HAVE_GETEXECNAME)
  76 check_function_exists(pledge HAVE_PLEDGE)
  77 check_function_exists(_socket HAVE__SOCKET)
  78 check_function_exists(_close HAVE__CLOSE)
  79 check_function_exists(__close_nocancel HAVE___CLOSE_NOCANCEL)
  80 check_function_exists(recvmmsg HAVE_RECVMMSG)
  81 check_function_exists(sendmmsg HAVE_SENDMMSG)
  82 check_function_exists(syscall HAVE_SYSCALL)
  83
  84 if (UNIX)
  85     find_library(DLFCN_LIBRARY dl)
  86     if (DLFCN_LIBRARY)
  87         list(APPEND _REQUIRED_LIBRARIES ${DLFCN_LIBRARY})
  88     else()
  89         check_function_exists(dlopen HAVE_DLOPEN)
  90         if (NOT HAVE_DLOPEN)
  91             message(FATAL_ERROR "FATAL: No dlopen() function detected")
  92         endif()
  93     endif()
  94
  95     if (NOT LINUX)
  96         # libsocket (Solaris)
  97         check_library_exists(socket getaddrinfo "" HAVE_LIBSOCKET)
  98         if (HAVE_LIBSOCKET)
  99             list(APPEND _REQUIRED_LIBRARIES socket)
 100         endif (HAVE_LIBSOCKET)
 101
 102         # libnsl/inet_pton (Solaris)
 103         check_library_exists(nsl inet_pton "" HAVE_LIBNSL)
 104         if (HAVE_LIBNSL)
 105             list(APPEND _REQUIRED_LIBRARIES nsl)
 106         endif (HAVE_LIBNSL)
 107     endif (NOT LINUX)
 108
 109     check_function_exists(getaddrinfo HAVE_GETADDRINFO)
 110 endif (UNIX)
 111
 112 # STRUCTS
 113 check_struct_has_member("struct in_pktinfo" ipi_addr "sys/types.h;sys/socket.h;netinet/in.h" HAVE_STRUCT_IN_PKTINFO)
 114 set(CMAKE_REQUIRED_FLAGS -D_GNU_SOURCE)
 115 check_struct_has_member("struct in6_pktinfo" ipi6_addr "sys/types.h;sys/socket.h;netinet/in.h" HAVE_STRUCT_IN6_PKTINFO)
 116 unset(CMAKE_REQUIRED_FLAGS)
 117
 118 # STRUCT MEMBERS
 119 check_struct_has_member("struct sockaddr" sa_len "sys/types.h;sys/socket.h;netinet/in.h" HAVE_STRUCT_SOCKADDR_SA_LEN)
 120 check_struct_has_member("struct msghdr" msg_control "sys/types.h;sys/socket.h" HAVE_STRUCT_MSGHDR_MSG_CONTROL)
 121
 122 # PROTOTYPES
 123 check_prototype_definition(gettimeofday
 124     "int gettimeofday(struct timeval *tv, struct timezone *tz)"
 125     "-1"
 126     "sys/time.h"
 127     HAVE_GETTIMEOFDAY_TZ)
 128
 129 check_prototype_definition(gettimeofday
 130     "int gettimeofday(struct timeval *tv, void *tzp)"
 131     "-1"
 132     "sys/time.h"
 133     HAVE_GETTIMEOFDAY_TZ_VOID)
 134
 135 check_prototype_definition(accept
 136     "int accept(int s, struct sockaddr *addr, Psocklen_t addrlen)"
 137     "-1"
 138     "sys/types.h;sys/socket.h"
 139     HAVE_ACCEPT_PSOCKLEN_T)
 140
 141 check_prototype_definition(ioctl
 142     "int ioctl(int s, int r, ...)"
 143     "-1"
 144     "unistd.h;sys/ioctl.h"
 145     HAVE_IOCTL_INT)
 146
 147 if (HAVE_EVENTFD)
 148     check_prototype_definition(eventfd
 149         "int eventfd(unsigned int count, int flags)"
 150         "-1"
 151         "sys/eventfd.h"
 152         HAVE_EVENTFD_UNSIGNED_INT)
 153 endif (HAVE_EVENTFD)
 154
 155 if (HAVE_SYSCALL)
 156     set(CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
 157
 158     check_prototype_definition(syscall
 159         "int syscall(int sysno, ...)"
 160         "-1"
 161         "unistd.h;sys/syscall.h"
 162         HAVE_SYSCALL_INT)
 163     set(CMAKE_REQUIRED_DEFINITIONS)
 164 endif (HAVE_SYSCALL)
 165
 166 if (HAVE_RECVMMSG)
 167     # Linux legacy glibc < 2.21
 168     set(CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
 169     check_prototype_definition(recvmmsg
 170         "int recvmmsg(int __fd, struct mmsghdr *__vmessages, unsigned int __vlen, int __flags, const struct timespec *__tmo)"
 171         "-1"
 172         "sys/types.h;sys/socket.h"
 173         HAVE_RECVMMSG_CONST_TIMEOUT)
 174     set(CMAKE_REQUIRED_DEFINITIONS)
 175
 176     # FreeBSD
 177     check_prototype_definition(recvmmsg
 178         "ssize_t recvmmsg(int __fd, struct mmsghdr * __restrict __vmessages, size_t __vlen, int __flags, const struct timespec * __restrict __tmo)"
 179         "-1"
 180         "sys/types.h;sys/socket.h"
 181         HAVE_RECVMMSG_SSIZE_T_CONST_TIMEOUT)
 182 endif (HAVE_RECVMMSG)
 183
 184 if (HAVE_SENDMMSG)
 185     # FreeBSD
 186     check_prototype_definition(sendmmsg
 187         "ssize_t sendmmsg(int __fd, struct mmsghdr * __restrict __vmessages, size_t __vlen, int __flags)"
 188         "-1"
 189         "sys/types.h;sys/socket.h"
 190         HAVE_SENDMMSG_SSIZE_T)
 191 endif (HAVE_SENDMMSG)
 192
 193 # IPV6
 194 check_c_source_compiles("
 195     #include <stdlib.h>
 196     #include <sys/socket.h>
 197     #include <netdb.h>
 198     #include <netinet/in.h>
 199     #include <net/if.h>
 200
 201 int main(void) {
 202     struct sockaddr_storage sa_store;
 203     struct addrinfo *ai = NULL;
 204     struct in6_addr in6addr;
 205     int idx = if_nametoindex(\"iface1\");
 206     int s = socket(AF_INET6, SOCK_STREAM, 0);
 207     int ret = getaddrinfo(NULL, NULL, NULL, &ai);
 208     if (ret != 0) {
 209         const char *es = gai_strerror(ret);
 210     }
 211
 212     freeaddrinfo(ai);
 213     {
 214         int val = 1;
 215 #ifdef HAVE_LINUX_IPV6_V6ONLY_26
 216 #define IPV6_V6ONLY 26
 217 #endif
 218         ret = setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
 219                          (const void *)&val, sizeof(val));
 220     }
 221
 222     return 0;
 223 }" HAVE_IPV6)
 224
 225 check_c_source_compiles("
 226 #include <sys/socket.h>
 227
 228 int main(void) {
 229     struct sockaddr_storage s;
 230
 231     return 0;
 232 }" HAVE_SOCKADDR_STORAGE)
 233
 234 ###########################################################
 235 # For detecting attributes we need to treat warnings as
 236 # errors
 237 set(CMAKE_REQUIRED_FLAGS "-Werror")
 238
 239 check_c_source_compiles("
 240 void test_constructor_attribute(void) __attribute__ ((constructor));
 241
 242 void test_constructor_attribute(void)
 243 {
 244     return;
 245 }
 246
 247 int main(void) {
 248     return 0;
 249 }" HAVE_CONSTRUCTOR_ATTRIBUTE)
 250
 251 check_c_source_compiles("
 252 void test_destructor_attribute(void) __attribute__ ((destructor));
 253
 254 void test_destructor_attribute(void)
 255 {
 256     return;
 257 }
 258
 259 int main(void) {
 260     return 0;
 261 }" HAVE_DESTRUCTOR_ATTRIBUTE)
 262
 263 check_c_source_compiles("
 264 #pragma init (test_constructor)
 265 void test_constructor(void);
 266
 267 void test_constructor(void)
 268 {
 269     return;
 270 }
 271
 272 int main(void) {
 273     return 0;
 274 }" HAVE_PRAGMA_INIT)
 275
 276 check_c_source_compiles("
 277 #pragma fini (test_destructor)
 278 void test_destructor(void);
 279
 280 void test_destructor(void)
 281 {
 282     return;
 283 }
 284
 285 int main(void) {
 286     return 0;
 287 }" HAVE_PRAGMA_FINI)
 288
 289 check_c_source_compiles("
 290 #define FALL_THROUGH __attribute__((fallthrough))
 291
 292 int main(void) {
 293     int i = 2;
 294
 295     switch (i) {
 296     case 0:
 297         FALL_THROUGH;
 298     case 1:
 299         break;
 300     default:
 301         break;
 302     }
 303
 304     return 0;
 305 }" HAVE_FALLTHROUGH_ATTRIBUTE)
 306
 307 check_c_source_compiles("
 308 __thread int tls;
 309
 310 int main(void) {
 311     return 0;
 312 }" HAVE_GCC_THREAD_LOCAL_STORAGE)
 313
 314 check_c_source_compiles("
 315 void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
 316
 317 int main(void) {
 318     return 0;
 319 }" HAVE_FUNCTION_ATTRIBUTE_FORMAT)
 320
 321 check_c_source_compiles("
 322 void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
 323
 324 void test_address_sanitizer_attribute(void)
 325 {
 326     return;
 327 }
 328
 329 int main(void) {
 330     return 0;
 331 }" HAVE_ADDRESS_SANITIZER_ATTRIBUTE)
 332
 333 # Stop treating wanrings as errors
 334 unset(CMAKE_REQUIRED_FLAGS)
 335 ###########################################################
 336
 337 if (OSX)
 338     set(HAVE_APPLE 1)
 339 endif (OSX)
 340
 341 # ENDIAN
 342 if (NOT WIN32)
 343     test_big_endian(WORDS_BIGENDIAN)
 344 endif (NOT WIN32)
 345
 346 check_type_size(pid_t SIZEOF_PID_T)
 347
 348 set(SWRAP_REQUIRED_LIBRARIES ${_REQUIRED_LIBRARIES} CACHE INTERNAL "socket_wrapper required system libraries")