largefile.m4: New file.

        * largefile.m4: New file.

Co-Authored-By: Joel Brobecker <brobecker@adacore.com>
Co-Authored-By: Paolo Bonzini <bonzini@gnu.org>

From-SVN: r153987

config/ChangeLog

+2009-11-06  Jan Kratochvil  <jan.kratochvil@redhat.com>
+	    Joel Brobecker  <brobecker@adacore.com>
+	    Paolo Bonzini  <bonzini@gnu.org>
+
+	* largefile.m4: New file.
+
 2009-10-23  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* acx.m4 (ACX_CHECK_CYGWIN_CAT_WORKS): Use = with test.

config/largefile.m4

+# This macro wraps AC_SYS_LARGEFILE with one exception for Solaris.
+# PR 9992/binutils: We have to replicate everywhere the behaviour of
+# bfd's configure script so that all the directories agree on the size
+# of structures used to describe files.
+
+AC_DEFUN([ACX_LARGEFILE],[dnl
+case "${host}" in
+changequote(,)dnl
+  sparc-*-solaris*|i[3-7]86-*-solaris*)
+changequote([,])dnl
+    # On native 32bit sparc and ia32 solaris, large-file and procfs support
+    # are mutually exclusive; and without procfs support, the bfd/ elf module
+    # cannot provide certain routines such as elfcore_write_prpsinfo
+    # or elfcore_write_prstatus.  So unless the user explicitly requested
+    # large-file support through the --enable-largefile switch, disable
+    # large-file support in favor of procfs support.
+    test "${target}" = "${host}" -a "x$plugins" = xno \
+      && : ${enable_largefile="no"}
+    ;;
+esac
+
+AC_SYS_LARGEFILE
+])