re PR bootstrap/10974 (Bootstrap failure)

	PR bootstrap/10974
	* physmem.c: Update comment.
	* configure.in: Modify test for _system_configuration for older
	AIX systems.

	* config.in, configure: Regenerated.

From-SVN: r67649

libiberty/ChangeLog

+2003-06-09  Albert Chin-A-Young  <china@thewrittenword.com>
+	
+	PR bootstrap/10974
+	* physmem.c: Update comment.
+	* configure.in: Modify test for _system_configuration for older
+	AIX systems.
+
+	* config.in, configure: Regenerated.
+	
 2003-06-05  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	PR other/10810

libiberty/config.in

@@ -316,9 +316,6 @@
 /* Define if you have the sys_siglist variable. */
 #undef HAVE_SYS_SIGLIST
 
-/* Define if you have the _system_configuration variable. */
-#undef HAVE__SYSTEM_CONFIGURATION
-
 /* Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP
    systems. This function is required for alloca.c support on those
    systems. */
@@ -331,6 +328,9 @@
         STACK_DIRECTION = 0 => direction of growth unknown */
 #undef STACK_DIRECTION
 
+/* Define if you have the _system_configuration variable. */
+#undef HAVE__SYSTEM_CONFIGURATION
+
 /* Define if canonicalize_file_name is not declared in system header files. */
 #undef NEED_DECLARATION_CANONICALIZE_FILE_NAME
 

libiberty/configure.in

@@ -209,7 +209,7 @@ funcs="$funcs waitpid"
 
 # Also in the old function.def file: alloca, vfork, getopt.
 
-vars="sys_errlist sys_nerr sys_siglist _system_configuration"
+vars="sys_errlist sys_nerr sys_siglist"
 
 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"
@@ -230,7 +230,6 @@ if test "x" = "y"; then
   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
-  AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1, [Define if you have the _system_configuration variable.])
 fi
 
 # For each of these functions, if the host does not provide the
@@ -433,6 +432,17 @@ if test -z "${setobjs}"; then
       AC_MSG_RESULT(no)
     fi
   done
+
+  # special check for _system_configuration because AIX <4.3.2 do not
+  # contain the `physmem' member.
+  AC_MSG_CHECKING([for external symbol _system_configuration])
+  AC_TRY_COMPILE([#include <sys/systemcfg.h>],
+                 [double x = _system_configuration.physmem;],
+    [AC_MSG_RESULT([yes])
+    AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
+              [Define if you have the _system_configuration variable.])],
+    [AC_MSG_RESULT([no])])
+
   AC_CHECK_FUNCS($checkfuncs)
   libiberty_NEED_DECLARATION(canonicalize_file_name)
 fi

libiberty/physmem.c

@@ -145,7 +145,7 @@ physmem_total ()
 #endif
 
 #if HAVE__SYSTEM_CONFIGURATION
-  /* This works on AIX.  */
+  /* This works on AIX 4.3.3+.  */
   return _system_configuration.physmem;
 #endif