Fix compile issues in Intel C/C++ compiler (Bug #9063)

acinclude.m4:
  Use AC_LANG_PUSH/POP instead of _SAVE/RESTORE
  Add test to get type of 'struct rlimit'
  Switch order of including stdlib.h and declaration being tested to
  match how it will be used in regular code.
configure.in:
  Call MYSQL_TYPE_STRUCT_RLIMIT macro
sql/mysqld.cc:
  Use STRUCT_RLIMIT for getting type of struct rlimit.

acinclude.m4

@@ -97,10 +97,10 @@ undefine([AC_CV_NAME])dnl
 AC_DEFUN([MYSQL_TYPE_ACCEPT],
 [ac_save_CXXFLAGS="$CXXFLAGS"
 AC_CACHE_CHECK([base type of last arg to accept], mysql_cv_btype_last_arg_accept,
-AC_LANG_SAVE
-AC_LANG_CPLUSPLUS
+AC_LANG_PUSH(C++)
 if test "$ac_cv_prog_gxx" = "yes"
 then
+  # Add -Werror, remove -fbranch-probabilities (Bug #268)
   CXXFLAGS=`echo $CXXFLAGS -Werror | sed 's/-fbranch-probabilities//'`
 fi
 mysql_cv_btype_last_arg_accept=none
@@ -127,7 +127,7 @@ fi
 if test "$mysql_cv_btype_last_arg_accept" = "none"; then
 mysql_cv_btype_last_arg_accept=int
 fi)
-AC_LANG_RESTORE
+AC_LANG_POP(C++)
 AC_DEFINE_UNQUOTED([SOCKET_SIZE_TYPE], [$mysql_cv_btype_last_arg_accept],
                    [The base type of the last arg to accept])
 CXXFLAGS="$ac_save_CXXFLAGS"
@@ -153,6 +153,35 @@ then
 fi
 ])
 
+#---START: Figure out whether to use 'struct rlimit' or 'struct rlimit64'
+AC_DEFUN([MYSQL_TYPE_STRUCT_RLIMIT],
+[ac_save_CXXFLAGS="$CXXFLAGS"
+AC_CACHE_CHECK([struct type to use with setrlimit], mysql_cv_btype_struct_rlimit,
+AC_LANG_PUSH(C++)
+if test "$ac_cv_prog_gxx" = "yes"
+then
+  # Add -Werror, remove -fbranch-probabilities (Bug #268)
+  CXXFLAGS=`echo $CXXFLAGS -Werror | sed 's/-fbranch-probabilities//'`
+fi
+mysql_cv_btype_struct_rlimit=none
+[AC_TRY_COMPILE([#if defined(inline)
+#undef inline
+#endif
+#include <stdlib.h>
+#include <sys/resources.h>
+],
+[struct rlimit64 rl; setrlimit(RLIMIT_CORE, &rl);],
+mysql_cv_btype_struct_rlimit="struct rlimit64")]
+if test "$mysql_cv_btype_struct_rlimit" = "none"; then
+mysql_cv_btype_struct_rlimit="struct rlimit"
+fi)
+AC_LANG_POP(C++)
+AC_DEFINE_UNQUOTED([STRUCT_RLIMIT], [$mysql_cv_btype_struct_rlimit],
+                   [The struct rlimit type to use with setrlimit])
+CXXFLAGS="$ac_save_CXXFLAGS"
+])
+#---END:
+
 AC_DEFUN([MYSQL_TIMESPEC_TS],
 [AC_CACHE_CHECK([if struct timespec has a ts_sec member], mysql_cv_timespec_ts,
 [AC_TRY_COMPILE([#include <pthread.h>
@@ -1940,8 +1969,8 @@ m4_define([_AC_PROG_CXX_EXIT_DECLARATION],
    'void exit (int);' \
    '#include <stdlib.h>'
 do
-  _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([@%:@include <stdlib.h>
-$ac_declaration],
+  _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$ac_declaration
+@%:@include <stdlib.h>],
                                       [exit (42);])],
                      [],
                      [continue])

configure.in

@@ -1795,6 +1795,8 @@ AC_C_BIGENDIAN
 MYSQL_TYPE_ACCEPT
 
 #---END:
+# Figure out what type of struct rlimit to use with setrlimit
+MYSQL_TYPE_STRUCT_RLIMIT
 # Find where the stack goes
 MYSQL_STACK_DIRECTION
 # We want to skip alloca on irix unconditionally. It may work on some version..

sql/mysqld.cc

@@ -2000,7 +2000,7 @@ static void init_signals(void)
   if (test_flags & TEST_CORE_ON_SIGNAL)
   {
     /* Change limits so that we will get a core file */
-    struct rlimit rl;
+    STRUCT_RLIMIT rl;
     rl.rlim_cur = rl.rlim_max = RLIM_INFINITY;
     if (setrlimit(RLIMIT_CORE, &rl) && global_system_variables.log_warnings)
       sql_print_warning("setrlimit could not change the size of core files to 'infinity';  We may not be able to generate a core file on signals");