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 ${APPLICATION_NAME})
  11 set(VERSION ${APPLICATION_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         set(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
  52 # FUNCTIONS
  53 check_function_exists(strncpy HAVE_STRNCPY)
  54 check_function_exists(vsnprintf HAVE_VSNPRINTF)
  55 check_function_exists(snprintf HAVE_SNPRINTF)
  56
  57 if (WIN32)
  58     check_function_exists(_vsnprintf_s HAVE__VSNPRINTF_S)
  59     check_function_exists(_vsnprintf HAVE__VSNPRINTF)
  60     check_function_exists(_snprintf HAVE__SNPRINTF)
  61     check_function_exists(_snprintf_s HAVE__SNPRINTF_S)
  62 endif (WIN32)
  63
  64 if (UNIX)
  65     if (NOT LINUX)
  66         # libsocket (Solaris)
  67         check_library_exists(socket getaddrinfo "" HAVE_LIBSOCKET)
  68         if (HAVE_LIBSOCKET)
  69           set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} socket)
  70         endif (HAVE_LIBSOCKET)
  71
  72         # libnsl/inet_pton (Solaris)
  73         check_library_exists(nsl inet_pton "" HAVE_LIBNSL)
  74         if (HAVE_LIBNSL)
  75             set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} nsl)
  76         endif (HAVE_LIBNSL)
  77     endif (NOT LINUX)
  78
  79     check_function_exists(getaddrinfo HAVE_GETADDRINFO)
  80 endif (UNIX)
  81
  82 set(LIBSSH_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "libssh required system libraries")
  83
  84 # STRUCT MEMBERS
  85 check_struct_has_member("struct sockaddr" sa_len "sys/socket.h netinet/in.h" HAVE_STRUCT_SOCKADDR_SA_LEN)
  86
  87 # PROTOTYPES
  88 check_prototype_definition(gettimeofday
  89     "int gettimeofday(struct timeval *tv, struct timezone *tz)"
  90     "-1"
  91     "sys/time.h"
  92     HAVE_GETTIMEOFDAY_TZ)
  93
  94 check_prototype_definition(gettimeofday
  95     "int gettimeofday(struct timeval *tv, void *tzp)"
  96     "-1"
  97     "sys/time.h"
  98     HAVE_GETTIMEOFDAY_TZ_VOID)
  99
 100 check_prototype_definition(accept
 101     "int accept(int s, struct sockaddr *addr, Psocklen_t addrlen)"
 102     "-1"
 103     "sys/types.h;sys/socket.h"
 104     HAVE_ACCEPT_PSOCKLEN_T)
 105
 106 check_prototype_definition(ioctl
 107     "int accept(int s, int r, ...)"
 108     "-1"
 109     "unistd.h"
 110     HAVE_IOCTL_INT)
 111
 112 # IPV6
 113 check_c_source_compiles("
 114     #include <stdlib.h>
 115     #include <sys/socket.h>
 116     #include <netdb.h>
 117     #include <netinet/in.h>
 118     #include <net/if.h>
 119
 120 int main(void) {
 121     struct sockaddr_storage sa_store;
 122     struct addrinfo *ai = NULL;
 123     struct in6_addr in6addr;
 124     int idx = if_nametoindex(\"iface1\");
 125     int s = socket(AF_INET6, SOCK_STREAM, 0);
 126     int ret = getaddrinfo(NULL, NULL, NULL, &ai);
 127     if (ret != 0) {
 128         const char *es = gai_strerror(ret);
 129     }
 130
 131     freeaddrinfo(ai);
 132     {
 133         int val = 1;
 134 #ifdef HAVE_LINUX_IPV6_V6ONLY_26
 135 #define IPV6_V6ONLY 26
 136 #endif
 137         ret = setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
 138                          (const void *)&val, sizeof(val));
 139     }
 140
 141     return 0;
 142 }" HAVE_IPV6)
 143
 144 check_c_source_compiles("
 145 #include <sys/socket.h>
 146
 147 int main(void) {
 148     struct sockaddr_storage s;
 149
 150     return 0;
 151 }" HAVE_SOCKADDR_STORAGE)
 152
 153 check_c_source_compiles("
 154 void test_destructor_attribute(void) __attribute__ ((destructor));
 155
 156 void test_destructor_attribute(void)
 157 {
 158     return;
 159 }
 160
 161 int main(void) {
 162     return 0;
 163 }" HAVE_DESTRUCTOR_ATTRIBUTE)
 164
 165 check_c_source_compiles("
 166 __thread int tls;
 167
 168 int main(void) {
 169     return 0;
 170 }" HAVE_GCC_THREAD_LOCAL_STORAGE)
 171
 172 check_library_exists(dl dlopen "" HAVE_LIBDL)
 173 if (HAVE_LIBDL)
 174     find_library(DLFCN_LIBRARY dl)
 175     set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${DLFCN_LIBRARY})
 176 endif (HAVE_LIBDL)
 177
 178 if (OSX)
 179     set(HAVE_APPLE 1)
 180 endif (OSX)
 181
 182 # ENDIAN
 183 if (NOT WIN32)
 184     test_big_endian(WORDS_BIGENDIAN)
 185 endif (NOT WIN32)
 186
 187 set(SWRAP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "swrap required system libraries")