git.m6w6.name Git - awesomized/libmemcached/blob - m4/protocol_binary.m4

   1 dnl ---------------------------------------------------------------------------
   2 dnl Macro: PROTOCOL_BINARY_TEST
   3 dnl ---------------------------------------------------------------------------
   4
   5 AC_DEFUN([PROTOCOL_BINARY_TEST],
   6 [
   7   AC_CACHE_CHECK([for supported struct padding], [ac_cv_supported_struct_padding], [
   8     AC_LANG_PUSH([C])
   9     save_CFLAGS="$CFLAGS"
  10     CFLAGS="$CFLAGS -I${srcdir}"
  11     AC_TRY_COMPILE([
  12 #include <inttypes.h>
  13 #include "libmemcached/memcached/protocol_binary.h"
  14                    ], [
  15       protocol_binary_request_set request;
  16       int a = 1;
  17       switch (a) {
  18       case sizeof(request):
  19       case sizeof(request.bytes):
  20           break;
  21       default:
  22           a = 2;
  23       }
  24                    ],
  25                    [ ac_cv_supported_struct_padding=no ],
  26                    [ ac_cv_supported_struct_padding=yes ])
  27    CFLAGS="$save_CFLAGS"
  28    AC_LANG_POP
  29   ])
  30   AS_IF([test "x$ac_cv_supported_struct_padding" = "xno"],[
  31         AC_MSG_ERROR([Unsupported struct padding done by compiler.])])
  32 ])
  33
  34 dnl ---------------------------------------------------------------------------
  35 dnl End Macro: PROTOCOL_BINARY_TEST
  36 dnl ---------------------------------------------------------------------------