configure.ac: Enable LTO by default on Darwin.

2010-09-03  Jack Howarth <howarth@bromo.med.uc.edu>

	* configure.ac: Enable LTO by default on Darwin.
	* configure: Regenerate.

From-SVN: r163839

ChangeLog

+2010-09-03  Jack Howarth <howarth@bromo.med.uc.edu>
+
+	* configure.ac: Enable LTO by default on Darwin.
+	* configure: Regenerate.
+
 2010-09-02  Marcus Shawcroft  <marcus.shawcroft@arm.com>
 
-        * MAINTAINERS (Write After Approval): Add myself.
+	* MAINTAINERS (Write After Approval): Add myself.
 
 2010-09-01  Ian Bolton  <ian.bolton@arm.com>
 
-        * MAINTAINERS (Write After Approval): Add myself.
+	* MAINTAINERS (Write After Approval): Add myself.
 
 2010-08-25  Danny Smith  <dannysmith@users.sourceforge.net>
 

configure

@@ -6670,8 +6670,11 @@ to specify its location." "$LINENO" 5
 fi
 else
   if test x"$default_enable_lto" = x"yes" ; then
-    # On non-ELF platforms, LTO must be explicitly enabled.
-    enable_lto=no
+    case $target in
+      *-apple-darwin*) ;;
+      # On other non-ELF platforms, LTO must be explicitly enabled.
+      *) enable_lto=no ;;
+    esac
   else
   # Apart from ELF platforms, only Windows supports LTO so far.  It
   # would also be nice to check the binutils support, but we don't
@@ -6680,7 +6683,6 @@ else
   # -flto it won't be needed until after installation anyway.
     case $target in
       *-cygwin*|*-mingw*) ;;
-      *-apple-darwin*) ;;
       *) if test x"$enable_lto" = x"yes"; then
 	as_fn_error "LTO support is not enabled for this target." "$LINENO" 5
         fi

configure.ac

@@ -1787,8 +1787,11 @@ to specify its location.])
   AC_SUBST(libelflibs)
   AC_SUBST(libelfinc)
 fi],[if test x"$default_enable_lto" = x"yes" ; then
-    # On non-ELF platforms, LTO must be explicitly enabled.
-    enable_lto=no
+    case $target in
+      *-apple-darwin*) ;;
+      # On other non-ELF platforms, LTO must be explicitly enabled.
+      *) enable_lto=no ;;
+    esac
   else
   # Apart from ELF platforms, only Windows supports LTO so far.  It
   # would also be nice to check the binutils support, but we don't
@@ -1797,7 +1800,6 @@ fi],[if test x"$default_enable_lto" = x"yes" ; then
   # -flto it won't be needed until after installation anyway.
     case $target in
       *-cygwin*|*-mingw*) ;;
-      *-apple-darwin*) ;;
       *) if test x"$enable_lto" = x"yes"; then
 	AC_MSG_ERROR([LTO support is not enabled for this target.])
         fi