12 files changed, 92 insertions, 10 deletions
diff --git a/config/ChangeLog b/config/ChangeLog
index deefcd0..9152d8a 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,19 @@
+2008-03-27  Paolo Bonzini  <bonzini@gnu.org>
+
+	* extensions.m4: New.
+
+2008-03-27  Paolo Bonzini  <bonzini@gnu.org>
+
+	* mh-armpic: Remove.
+	* mh-i370pic: Remove.
+	* mh-m68kpic: Remove.
+	* mh-ppcpic: Remove.
+	* mh-sparcpic: Remove.
+	* mh-ia64pic: Remove.
+	* mh-papic: Remove.
+	* mh-s390pic: Remove.
+	* mh-x86pic: Remove.
+
 2008-03-16  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	* proginstall.m4: New file, with fixed AC_PROG_INSTALL.
diff --git a/config/extensions.m4 b/config/extensions.m4
new file mode 100644
index 0000000..8ae4a67
--- /dev/null
+++ b/config/extensions.m4
@@ -0,0 +1,76 @@
+# serial 5  -*- Autoconf -*-
+# Enable extensions on systems that normally disable them.
+
+# Copyright (C) 2003, 2006, 2007 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from CVS
+# Autoconf.  Perhaps we can remove this once we can assume Autoconf
+# 2.62 or later everywhere, but since CVS Autoconf mutates rapidly
+# enough in this area it's likely we'll need to redefine
+# AC_USE_SYSTEM_EXTENSIONS for quite some time.
+
+# AC_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+# Remember that #undef in AH_VERBATIM gets replaced with #define by
+# AC_DEFINE.  The goal here is to define all known feature-enabling
+# macros, then, if reports of conflicts are made, disable macros that
+# cause problems on some platforms (such as __EXTENSIONS__).
+AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
+[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
+AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
+
+  AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=])
+  if test "$MINIX" = yes; then
+    AC_DEFINE([_POSIX_SOURCE], [1],
+      [Define to 1 if you need to in order for `stat' and other
+       things to work.])
+    AC_DEFINE([_POSIX_1_SOURCE], [2],
+      [Define to 2 if the system does not provide POSIX.1 features
+       except with this defined.])
+    AC_DEFINE([_MINIX], [1],
+      [Define to 1 if on MINIX.])
+  fi
+
+  AH_VERBATIM([__EXTENSIONS__],
+[/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+])
+  AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
+    [ac_cv_safe_to_define___extensions__],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM([
+#	  define __EXTENSIONS__ 1
+	  AC_INCLUDES_DEFAULT])],
+       [ac_cv_safe_to_define___extensions__=yes],
+       [ac_cv_safe_to_define___extensions__=no])])
+  test $ac_cv_safe_to_define___extensions__ = yes &&
+    AC_DEFINE([__EXTENSIONS__])
+  AC_DEFINE([_ALL_SOURCE])
+  AC_DEFINE([_GNU_SOURCE])
+  AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
+  AC_DEFINE([_TANDEM_SOURCE])
+])# AC_USE_SYSTEM_EXTENSIONS
+
diff --git a/config/mh-armpic b/config/mh-armpic
deleted file mode 100644
index 35cf2c8..0000000
--- a/config/mh-armpic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fPIC
diff --git a/config/mh-elfalphapic b/config/mh-elfalphapic
deleted file mode 100644
index 35cf2c8..0000000
--- a/config/mh-elfalphapic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fPIC
diff --git a/config/mh-i370pic b/config/mh-i370pic
deleted file mode 100644
index 35cf2c8..0000000
--- a/config/mh-i370pic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fPIC
diff --git a/config/mh-ia64pic b/config/mh-ia64pic
deleted file mode 100644
index 92e48d9..0000000
--- a/config/mh-ia64pic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fpic
diff --git a/config/mh-m68kpic b/config/mh-m68kpic
deleted file mode 100644
index 92e48d9..0000000
--- a/config/mh-m68kpic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fpic
diff --git a/config/mh-papic b/config/mh-papic
deleted file mode 100644
index 35cf2c8..0000000
--- a/config/mh-papic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fPIC
diff --git a/config/mh-ppcpic b/config/mh-ppcpic
deleted file mode 100644
index 35cf2c8..0000000
--- a/config/mh-ppcpic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fPIC
diff --git a/config/mh-s390pic b/config/mh-s390pic
deleted file mode 100644
index 92e48d9..0000000
--- a/config/mh-s390pic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fpic
diff --git a/config/mh-sparcpic b/config/mh-sparcpic
deleted file mode 100644
index e218bb4..0000000
--- a/config/mh-sparcpic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=`case '${LIBCFLAGS} ${LIBCXXFLAGS}' in *-fpic* ) echo -fpic ;; * ) echo -fPIC ;; esac`
diff --git a/config/mh-x86pic b/config/mh-x86pic
deleted file mode 100644
index 92e48d9..0000000
--- a/config/mh-x86pic
+++ /dev/null
@@ -1 +0,0 @@
-PICFLAG=-fpic