* gcc-interface/Make-lang.in (RTS_DIR): Define only if Ada is enabled.

From-SVN: r194384

gcc/ada/ChangeLog

+2012-12-11  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* gcc-interface/Make-lang.in (RTS_DIR): Define only if Ada is enabled.
+
 2012-12-08  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc-interface/trans.c (gnat_to_gnu) <N_Indexed_Component>: Assert

gcc/ada/gcc-interface/Make-lang.in

@@ -122,7 +122,9 @@ ifeq ($(build), $(host))
 
     # put the host RTS dir first in the PATH to hide the default runtime
     # files that are among the sources
-    RTS_DIR:=$(strip $(subst \,/,$(shell gnatls -v | grep adalib )))
+    ifneq ($(findstring ada,$(LANGUAGES)),)
+      RTS_DIR:=$(strip $(subst \,/,$(shell gnatls -v | grep adalib )))
+    endif
 
     ADA_TOOLS_FLAGS_TO_PASS=\
         CC="$(CC)" \
@@ -157,7 +159,9 @@ else
   else
     # This is a canadian cross. We should use a toolchain running on the
     # build platform and targeting the host platform.
-    RTS_DIR:=$(strip $(subst \,/,$(shell $(GNATLS_FOR_HOST) -v | grep adalib )))
+    ifneq ($(findstring ada,$(LANGUAGES)),)
+      RTS_DIR:=$(strip $(subst \,/,$(shell $(GNATLS_FOR_HOST) -v | grep adalib )))
+    endif
     ADA_TOOLS_FLAGS_TO_PASS=\
         CC="$(CC)" \
         $(COMMON_FLAGS_TO_PASS) $(ADA_FLAGS_TO_PASS)  \