binutils: fix build with host gcc < 4.9

binutils 2.27 checks if the target compiler supports -Wstack-
usage=262144, and also uses this setting for the host compiler. If the
host compiler is gcc < 4.9 binutils build will fail. This backports 2
commits which are fixing this problem for binutils 2.28.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/devel/binutils/patches/0001-Do-not-pass-host-compiler-sanitization-flags-on-to-l.patch

@@ -0,0 +1,65 @@
+From 183eb37e25d903ccd68cc2d8f8a37e75872c03d2 Mon Sep 17 00:00:00 2001
+From: Nick Clifton <nickc@redhat.com>
+Date: Tue, 6 Sep 2016 17:35:35 +0100
+Subject: [PATCH 1/2] Do not pass host compiler sanitization flags on to linker
+ testsuite.
+
+	* Makefile.am (CFLAGS_FOR_TARGET): Define as a copy of CFLAGS but
+	without any sanitization options.
+	(CXXFLAGS_FOR_TARGET): Define as a copy of CXXFLAGS but	without
+	any sanitization options.
+	(check-DEJAGNU): Pass CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET
+	as CFLAGS and CXXFLAGS respectively.
+---
+ ld/Makefile.am | 8 ++++++--
+ ld/Makefile.in | 8 ++++++--
+ 2 files changed, 12 insertions(+), 4 deletions(-)
+
+--- a/ld/Makefile.am
++++ b/ld/Makefile.am
+@@ -136,6 +136,10 @@ CXX_FOR_TARGET = ` \
+     fi; \
+   fi`
+ 
++# Strip out sanitization options as we want to test building binaries without any extra paraphernalia
++CFLAGS_FOR_TARGET = `echo $(CFLAGS) | sed -e 's/-fsanitize=address//g' -e 's/-fsanitize=undefined//g'`
++CXXFLAGS_FOR_TARGET = `echo $(CXXFLAGS) | sed -e 's/-fsanitize=address//g' -e 's/-fsanitize=undefined//g'`
++
+ transform = s/^ld-new$$/$(installed_linker)/;@program_transform_name@
+ bin_PROGRAMS = ld-new
+ info_TEXINFOS = ld.texinfo
+@@ -2075,8 +2079,8 @@ check-DEJAGNU: site.exp
+ 	runtest=$(RUNTEST); \
+ 	if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
+ 	  $$runtest --tool $(DEJATOOL) --srcdir $${srcroot}/testsuite \
+-		CC="$(CC_FOR_TARGET)" CFLAGS="$(CFLAGS)" \
+-		CXX="$(CXX_FOR_TARGET)" CXXFLAGS="$(CXXFLAGS)" \
++		CC="$(CC_FOR_TARGET)" CFLAGS="$(CFLAGS_FOR_TARGET)" \
++		CXX="$(CXX_FOR_TARGET)" CXXFLAGS="$(CXXFLAGS_FOR_TARGET)" \
+ 		CC_FOR_HOST="$(CC)" CFLAGS_FOR_HOST="$(CFLAGS)" \
+ 		OFILES="$(OFILES)" BFDLIB="$(TESTBFDLIB)" \
+ 		LIBIBERTY="$(LIBIBERTY) $(LIBINTL)" LIBS="$(LIBS)" \
+--- a/ld/Makefile.in
++++ b/ld/Makefile.in
+@@ -507,6 +507,10 @@ CXX_FOR_TARGET = ` \
+     fi; \
+   fi`
+ 
++
++# Strip out sanitization options as they require special host libraries.
++CFLAGS_FOR_TARGET = `echo $(CFLAGS) | sed -e 's/-fsanitize=address//g' -e 's/-fsanitize=undefined//g'`
++CXXFLAGS_FOR_TARGET = `echo $(CXXFLAGS) | sed -e 's/-fsanitize=address//g' -e 's/-fsanitize=undefined//g'`
+ info_TEXINFOS = ld.texinfo
+ ld_TEXINFOS = configdoc.texi
+ noinst_TEXINFOS = ldint.texinfo
+@@ -3644,8 +3648,8 @@ check-DEJAGNU: site.exp
+ 	runtest=$(RUNTEST); \
+ 	if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
+ 	  $$runtest --tool $(DEJATOOL) --srcdir $${srcroot}/testsuite \
+-		CC="$(CC_FOR_TARGET)" CFLAGS="$(CFLAGS)" \
+-		CXX="$(CXX_FOR_TARGET)" CXXFLAGS="$(CXXFLAGS)" \
++		CC="$(CC_FOR_TARGET)" CFLAGS="$(CFLAGS_FOR_TARGET)" \
++		CXX="$(CXX_FOR_TARGET)" CXXFLAGS="$(CXXFLAGS_FOR_TARGET)" \
+ 		CC_FOR_HOST="$(CC)" CFLAGS_FOR_HOST="$(CFLAGS)" \
+ 		OFILES="$(OFILES)" BFDLIB="$(TESTBFDLIB)" \
+ 		LIBIBERTY="$(LIBIBERTY) $(LIBINTL)" LIBS="$(LIBS)" \