gcc 4.8 won't build with --disable-dependency-tracking since the *.Ppo files
don't get created unless --enable-dependency-tracking is true.

This patch ensures we only use those compiler options when its enabled.

Upstream-Status: Submitted

(Problem was already reported upstream, attached this patch there
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55930)

RP 
2012/09/22

Index: gcc-4.8.1/libatomic/Makefile.am
===================================================================
--- gcc-4.8.1.orig/libatomic/Makefile.am	2013-01-14 18:16:23.000000000 +0000
+++ gcc-4.8.1/libatomic/Makefile.am	2013-09-22 10:38:18.904064750 +0000
@@ -100,7 +100,8 @@
 IFUNC_DEF	= -DIFUNC_ALT=$(PAT_S)
 IFUNC_OPT	= $(word $(PAT_S),$(IFUNC_OPTIONS))
 
-M_DEPS		= -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_TRUE@M_DEPS		= -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_FALSE@M_DEPS		= 
 M_SIZE		= -DN=$(PAT_N)
 M_IFUNC		= $(if $(PAT_S),$(IFUNC_DEF) $(IFUNC_OPT))
 M_FILE		= $(PAT_BASE)_n.c
Index: gcc-4.8.1/libatomic/Makefile.in
===================================================================
--- gcc-4.8.1.orig/libatomic/Makefile.in	2013-05-31 09:09:26.000000000 +0000
+++ gcc-4.8.1/libatomic/Makefile.in	2013-09-22 10:40:42.520059917 +0000
@@ -298,7 +298,8 @@
 PAT_S = $(word 3,$(PAT_SPLIT))
 IFUNC_DEF = -DIFUNC_ALT=$(PAT_S)
 IFUNC_OPT = $(word $(PAT_S),$(IFUNC_OPTIONS))
-M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_TRUE@M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_FALSE@M_DEPS = 
 M_SIZE = -DN=$(PAT_N)
 M_IFUNC = $(if $(PAT_S),$(IFUNC_DEF) $(IFUNC_OPT))
 M_FILE = $(PAT_BASE)_n.c