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