re PR bootstrap/25672 (cross build's libgcc picks up CFLAGS)

	PR bootstrap/25672
	* configure.ac: Do not initialize CFLAGS_FOR_TARGET from CFLAGS if
	cross-compiling.  Similarly for CXX_FOR_TARGET.
	* configure: Regenerate.

From-SVN: r221326

ChangeLog

+2015-03-09  Aldy Hernandez  <aldyh@redhat.com>
+
+	PR bootstrap/25672
+	* configure.ac: Do not initialize CFLAGS_FOR_TARGET from CFLAGS if
+	cross-compiling.  Similarly for CXX_FOR_TARGET.
+	* configure: Regenerate.
+
 2015-03-10  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	* Makefile.def: Add libmpx.

configure

@@ -6695,6 +6695,9 @@ fi
 # gcc) are built with "-O2 -g", so include those options when setting
 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
 if test "x$CFLAGS_FOR_TARGET" = x; then
+  if test "x${is_cross_compiler}" = xyes; then
+    CFLAGS_FOR_TARGET="-g -O2"
+  else
     CFLAGS_FOR_TARGET=$CFLAGS
     case " $CFLAGS " in
       *" -O2 "*) ;;
@@ -6704,10 +6707,14 @@ if test "x$CFLAGS_FOR_TARGET" = x; then
       *" -g "* | *" -g3 "*) ;;
       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
     esac
+  fi
 fi
 
 
 if test "x$CXXFLAGS_FOR_TARGET" = x; then
+  if test "x${is_cross_compiler}" = xyes; then
+    CXXFLAGS_FOR_TARGET="-g -O2"
+  else
     CXXFLAGS_FOR_TARGET=$CXXFLAGS
     case " $CXXFLAGS " in
       *" -O2 "*) ;;
@@ -6717,6 +6724,7 @@ if test "x$CXXFLAGS_FOR_TARGET" = x; then
       *" -g "* | *" -g3 "*) ;;
       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
     esac
+  fi
 fi
 
 

configure.ac

@@ -2341,6 +2341,9 @@ AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
 # gcc) are built with "-O2 -g", so include those options when setting
 # CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
 if test "x$CFLAGS_FOR_TARGET" = x; then
+  if test "x${is_cross_compiler}" = xyes; then
+    CFLAGS_FOR_TARGET="-g -O2"
+  else
     CFLAGS_FOR_TARGET=$CFLAGS
     case " $CFLAGS " in
       *" -O2 "*) ;;
@@ -2350,10 +2353,14 @@ if test "x$CFLAGS_FOR_TARGET" = x; then
       *" -g "* | *" -g3 "*) ;;
       *) CFLAGS_FOR_TARGET="-g $CFLAGS_FOR_TARGET" ;;
     esac
+  fi
 fi
 AC_SUBST(CFLAGS_FOR_TARGET)
 
 if test "x$CXXFLAGS_FOR_TARGET" = x; then
+  if test "x${is_cross_compiler}" = xyes; then
+    CXXFLAGS_FOR_TARGET="-g -O2"
+  else
     CXXFLAGS_FOR_TARGET=$CXXFLAGS
     case " $CXXFLAGS " in
       *" -O2 "*) ;;
@@ -2363,6 +2370,7 @@ if test "x$CXXFLAGS_FOR_TARGET" = x; then
       *" -g "* | *" -g3 "*) ;;
       *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS_FOR_TARGET" ;;
     esac
+  fi
 fi
 AC_SUBST(CXXFLAGS_FOR_TARGET)