Makefile.in: Don't cat ../stage_current if it does not exist.

	* Makefile.in: Don't cat ../stage_current if it does not exist.
c/
	* Make-lang.in: Don't cat ../stage_current if it does not exist.
cp/
	* Make-lang.in: Don't cat ../stage_current if it does not exist.
lto/
	* Make-lang.in: Don't cat ../stage_current if it does not exist.

From-SVN: r237817

gcc/ChangeLog

 2016-06-28  Jakub Jelinek  <jakub@redhat.com>
 
+	* Makefile.in: Don't cat ../stage_current if it does not exist.
+
 	* doc/extend.texi (__builtin_add_overflow_p): Clarify behavior when
 	last argument is a bit-field.
 

gcc/Makefile.in

@@ -1569,7 +1569,8 @@ ALL_HOST_BACKEND_OBJS = $(GCC_OBJS) $(OBJS) $(OBJS-libcommon) \
 
 # for anything that is shared use the cc1plus profile data, as that
 # is likely the most exercised during the build
-ifeq ($(shell cat ../stage_current),stageautofeedback)
+ifeq ($(if $(wildcard ../stage_current),$(shell cat \
+  ../stage_current)),stageautofeedback)
 $(ALL_HOST_BACKEND_OBJS): ALL_COMPILERFLAGS += -fauto-profile=cc1plus.fda
 $(ALL_HOST_BACKEND_OBJS): cc1plus.fda
 endif

gcc/c/ChangeLog

+2016-06-28  Jakub Jelinek  <jakub@redhat.com>
+
+	* Make-lang.in: Don't cat ../stage_current if it does not exist.
+
 2016-06-23  Andi Kleen  <ak@linux.intel.com>
 
 	* Make-lang.in: Add support for autofdo.

gcc/c/Make-lang.in

@@ -60,7 +60,8 @@ c_OBJS = $(C_OBJS) cc1-checksum.o c/gccspec.o
 # Use strict warnings for this front end.
 c-warn = $(STRICT_WARN)
 
-ifeq ($(shell cat ../stage_current),stageautofeedback)
+ifeq ($(if $(wildcard ../stage_current),$(shell cat \
+  ../stage_current)),stageautofeedback)
 $(C_OBJS): ALL_COMPILERFLAGS += -fauto-profile=cc1.fda
 $(C_OBJS): cc1.fda
 endif

gcc/cp/ChangeLog

+2016-06-28  Jakub Jelinek  <jakub@redhat.com>
+
+	* Make-lang.in: Don't cat ../stage_current if it does not exist.
+
 2016-06-24  Jason Merrill  <jason@redhat.com>
 
 	P0145R2: Refining Expression Order for C++.

gcc/cp/Make-lang.in

@@ -81,7 +81,8 @@ CXX_AND_OBJCXX_OBJS = cp/call.o cp/decl.o cp/expr.o cp/pt.o cp/typeck2.o \
  cp/vtable-class-hierarchy.o cp/constexpr.o cp/cp-ubsan.o \
  cp/constraint.o cp/logic.o $(CXX_C_OBJS)
 
-ifeq ($(shell cat ../stage_current),stageautofeedback)
+ifeq ($(if $(wildcard ../stage_current),$(shell cat \
+  ../stage_current)),stageautofeedback)
 $(CXX_AND_OBJCXX_OBJS): CFLAGS += -fauto-profile=cc1plus.fda
 $(CXX_AND_OBJCXX_OBJS): cc1plus.fda
 endif

gcc/lto/ChangeLog

+2016-06-28  Jakub Jelinek  <jakub@redhat.com>
+
+	* Make-lang.in: Don't cat ../stage_current if it does not exist.
+
 2016-06-23  Andi Kleen  <ak@linux.intel.com>
 
 	* Make-lang.in: Add support for autofdo (disabled for now)

gcc/lto/Make-lang.in

@@ -29,7 +29,8 @@ lto_OBJS = $(LTO_OBJS)
 # now. Should reenable after this is fixed, but only when LTO bootstrap
 # is enabled.
 
-#ifeq ($(shell cat ../stage_current),stageautofeedback)
+#ifeq ($(if $(wildcard ../stage_current),$(shell cat \
+#  ../stage_current)),stageautofeedback)
 #$(LTO_OBJS): CFLAGS += -fauto-profile=lto1.fda
 #$(LTO_OBJS): lto1.fda
 #endif