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