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} ${_COMPILER_VERSION} PARENT_SCOPE)
  35 endfunction()
  36
  37 if(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
  38     compiler_dumpversion(GNUCC_VERSION)
  39     if (NOT GNUCC_VERSION EQUAL 34)
  40         set(CMAKE_REQUIRED_FLAGS "-fvisibility=hidden")
  41         check_c_source_compiles(
  42 "void __attribute__((visibility(\"default\"))) test() {}
  43 int main(void){ return 0; }
  44 " WITH_VISIBILITY_HIDDEN)
  45         set(CMAKE_REQUIRED_FLAGS "")
  46     endif (NOT GNUCC_VERSION EQUAL 34)
  47 endif(CMAKE_COMPILER_IS_GNUCC AND NOT MINGW AND NOT OS2)
  48
  49 # HEADERS
  50 check_include_file(sys/types.h HAVE_SYS_TYPES_H)
  51 check_include_file(resolv.h HAVE_RESOLV_H)
  52
  53 # FUNCTIONS
  54 set(CMAKE_REQUIRED_LIBRARIES)
  55
  56 find_library(RESOLV_LIRBRARY resolv)
  57
  58 if (RESOLV_LIRBRARY)
  59     check_library_exists(${RESOLV_LIRBRARY} res_send "" RES_SEND_IN_LIBRESOLV)
  60     check_library_exists(${RESOLV_LIRBRARY} __res_send "" __RES_SEND_IN_LIBRESOLV)
  61     if (RES_SEND_IN_LIBRESOLV OR __RES_SEND_IN_LIBRESOLV)
  62         set(HAVE_LIBRESOLV TRUE)
  63         set(CMAKE_REQUIRED_LIBRARIES ${RESOLV_LIRBRARY})
  64     endif()
  65 endif()
  66
  67 check_function_exists(res_init HAVE_RES_INIT)
  68 check_function_exists(__res_init HAVE___RES_INIT)
  69
  70 check_function_exists(res_ninit HAVE_RES_NINIT)
  71 check_function_exists(__res_ninit HAVE___RES_NINIT)
  72 if (RESOLV_LIRBRARY)
  73     check_library_exists(${RESOLV_LIRBRARY} res_ninit "" HAVE_RES_NINIT_IN_LIBRESOLV)
  74 endif()
  75
  76 check_function_exists(res_close HAVE_RES_CLOSE)
  77 check_function_exists(__res_close HAVE___RES_CLOSE)
  78
  79 check_function_exists(res_nclose HAVE_RES_NCLOSE)
  80 check_function_exists(__res_nclose HAVE___RES_NCLOSE)
  81 if (RESOLV_LIRBRARY)
  82     check_library_exists(${RESOLV_LIRBRARY} res_nclose "" HAVE_RES_NCLOSE_IN_LIBRESOLV)
  83 endif()
  84
  85 check_function_exists(res_query HAVE_RES_QUERY)
  86 check_function_exists(__res_query HAVE___RES_QUERY)
  87
  88 check_function_exists(res_nquery HAVE_RES_NQUERY)
  89 check_function_exists(__res_nquery HAVE___RES_NQUERY)
  90
  91 check_function_exists(res_search HAVE_RES_SEARCH)
  92 check_function_exists(__res_search HAVE___RES_SEARCH)
  93
  94 check_function_exists(res_nsearch HAVE_RES_NSEARCH)
  95 check_function_exists(__res_nsearch HAVE___RES_NSEARCH)
  96
  97 check_symbol_exists(ns_name_compress "sys/types.h;arpa/nameser.h" HAVE_NS_NAME_COMPRESS)
  98
  99 if (UNIX)
 100     if (NOT LINUX)
 101         # libsocket (Solaris)
 102         check_library_exists(socket getaddrinfo "" HAVE_LIBSOCKET)
 103         if (HAVE_LIBSOCKET)
 104           set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} socket)
 105         endif (HAVE_LIBSOCKET)
 106
 107         # libnsl/inet_pton (Solaris)
 108         check_library_exists(nsl inet_pton "" HAVE_LIBNSL)
 109         if (HAVE_LIBNSL)
 110             set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} nsl)
 111         endif (HAVE_LIBNSL)
 112     endif (NOT LINUX)
 113
 114     check_function_exists(getaddrinfo HAVE_GETADDRINFO)
 115 endif (UNIX)
 116
 117 check_library_exists(dl dlopen "" HAVE_LIBDL)
 118 if (HAVE_LIBDL)
 119     find_library(DLFCN_LIBRARY dl)
 120     set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${DLFCN_LIBRARY})
 121 endif (HAVE_LIBDL)
 122
 123 # IPV6
 124 check_c_source_compiles("
 125     #include <stdlib.h>
 126     #include <sys/socket.h>
 127     #include <netdb.h>
 128     #include <netinet/in.h>
 129     #include <net/if.h>
 130
 131 int main(void) {
 132     struct sockaddr_storage sa_store;
 133     struct addrinfo *ai = NULL;
 134     struct in6_addr in6addr;
 135     int idx = if_nametoindex(\"iface1\");
 136     int s = socket(AF_INET6, SOCK_STREAM, 0);
 137     int ret = getaddrinfo(NULL, NULL, NULL, &ai);
 138     if (ret != 0) {
 139         const char *es = gai_strerror(ret);
 140     }
 141
 142     freeaddrinfo(ai);
 143     {
 144         int val = 1;
 145 #ifdef HAVE_LINUX_IPV6_V6ONLY_26
 146 #define IPV6_V6ONLY 26
 147 #endif
 148         ret = setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
 149                          (const void *)&val, sizeof(val));
 150     }
 151
 152     return 0;
 153 }" HAVE_IPV6)
 154
 155 check_struct_has_member("struct __res_state" _u._ext.nsaddrs resolv.h HAVE_RESOLV_IPV6_NSADDRS)
 156
 157 check_c_source_compiles("
 158 void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
 159
 160 int main(void) {
 161     return 0;
 162 }" HAVE_ATTRIBUTE_PRINTF_FORMAT)
 163
 164 check_c_source_compiles("
 165 void test_destructor_attribute(void) __attribute__ ((destructor));
 166
 167 void test_destructor_attribute(void)
 168 {
 169     return;
 170 }
 171
 172 int main(void) {
 173     return 0;
 174 }" HAVE_DESTRUCTOR_ATTRIBUTE)
 175
 176 # ENDIAN
 177 test_big_endian(WORDS_BIGENDIAN)
 178
 179 set(RWRAP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} CACHE INTERNAL "resolv_wrapper required system libraries")