ppe42-binutils,ppe42-gcc: Patch, use $(MAKE) and -Wno-error to fix build on modern GCC

Because building a compiler with -Wno-error to avoid erorring out on
undefined behaviour is a good idea.

We build with $(MAKE) so that we get the -j option passed down from
buildroot. this speeds up build by a couple of orders of magnitude
on my build machine.

Fixes: https://github.com/open-power/op-build/issues/803
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/package/ppe42-binutils/ppe42-binutils.mk b/openpower/package/ppe42-binutils/ppe42-binutils.mk
index 3a9c125..68579d8 100644
--- a/openpower/package/ppe42-binutils/ppe42-binutils.mk
+++ b/openpower/package/ppe42-binutils/ppe42-binutils.mk
@@ -21,8 +21,8 @@
 					--enable-shared \
 					--enable-64-bit-bfd \
 					&& \
-        make configure-host && \
-        make LDFLAGS=-all-static CFLAGS=-Wno-error=unused-value
+        $(MAKE) configure-host && \
+        $(MAKE) LDFLAGS=-all-static CFLAGS=-Wno-error
 endef
 
 define HOST_PPE42_BINUTILS_INSTALL_CMDS
diff --git a/openpower/package/ppe42-gcc/0001-2016-02-19-Jakub-Jelinek-jakub-redhat.com.patch b/openpower/package/ppe42-gcc/0001-2016-02-19-Jakub-Jelinek-jakub-redhat.com.patch
new file mode 100644
index 0000000..c5dc6d4
--- /dev/null
+++ b/openpower/package/ppe42-gcc/0001-2016-02-19-Jakub-Jelinek-jakub-redhat.com.patch
@@ -0,0 +1,150 @@
+From ec1cc0263f156f70693a62cf17b254a0029f4852 Mon Sep 17 00:00:00 2001
+From: edlinger <edlinger@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 19 Feb 2016 22:13:29 +0000
+Subject: [PATCH] 2016-02-19  Jakub Jelinek  <jakub@redhat.com>            
+ Bernd Edlinger  <bernd.edlinger@hotmail.de>
+
+        * Make-lang.in: Invoke gperf with -L C++.
+        * cfns.gperf: Remove prototypes for hash and libc_name_p
+        inlines.
+        * cfns.h: Regenerated.
+        * except.c (nothrow_libfn_p): Adjust.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@233572 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/cp/ChangeLog    |  9 +++++++++
+ gcc/cp/Make-lang.in |  2 +-
+ gcc/cp/cfns.gperf   | 10 ++--------
+ gcc/cp/cfns.h       | 41 ++++++++++++++---------------------------
+ gcc/cp/except.c     |  3 ++-
+ 5 files changed, 28 insertions(+), 37 deletions(-)
+
+diff --git a/gcc/cp/Make-lang.in b/gcc/cp/Make-lang.in
+index 671ce12..2286c64 100644
+--- a/gcc/cp/Make-lang.in
++++ b/gcc/cp/Make-lang.in
+@@ -112,7 +112,7 @@ else
+ # deleting the $(srcdir)/cp/cfns.h file.
+ $(srcdir)/cp/cfns.h:
+ endif
+-	gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L ANSI-C \
++	gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L C++ \
+ 		$(srcdir)/cp/cfns.gperf --output-file $(srcdir)/cp/cfns.h
+ 
+ #
+diff --git a/gcc/cp/cfns.gperf b/gcc/cp/cfns.gperf
+index 2784edc..8d7f015 100644
+--- a/gcc/cp/cfns.gperf
++++ b/gcc/cp/cfns.gperf
+@@ -1,3 +1,5 @@
++%language=C++
++%define class-name libc_name
+ %{
+ /* Copyright (C) 2000-2016 Free Software Foundation, Inc.
+ 
+@@ -16,14 +18,6 @@ for more details.
+ You should have received a copy of the GNU General Public License
+ along with GCC; see the file COPYING3.  If not see
+ <http://www.gnu.org/licenses/>.  */
+-#ifdef __GNUC__
+-__inline
+-#endif
+-static unsigned int hash (const char *, unsigned int);
+-#ifdef __GNUC__
+-__inline
+-#endif
+-const char * libc_name_p (const char *, unsigned int);
+ %}
+ %%
+ # The standard C library functions, for feeding to gperf; the result is used
+diff --git a/gcc/cp/cfns.h b/gcc/cp/cfns.h
+index d8e02c9..9a37249 100644
+--- a/gcc/cp/cfns.h
++++ b/gcc/cp/cfns.h
+@@ -1,5 +1,5 @@
+-/* ANSI-C code produced by gperf version 3.0.3 */
+-/* Command-line: gperf -o -C -E -k '1-6,$' -j1 -D -N libc_name_p -L ANSI-C cfns.gperf  */
++/* C++ code produced by gperf version 3.0.4 */
++/* Command-line: gperf -o -C -E -k '1-6,$' -j1 -D -N libc_name_p -L C++ --output-file cfns.h cfns.gperf  */
+ 
+ #if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+       && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+@@ -28,7 +28,7 @@
+ #error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
+ #endif
+ 
+-#line 1 "cfns.gperf"
++#line 3 "cfns.gperf"
+ 
+ /* Copyright (C) 2000-2016 Free Software Foundation, Inc.
+ 
+@@ -47,25 +47,18 @@ for more details.
+ You should have received a copy of the GNU General Public License
+ along with GCC; see the file COPYING3.  If not see
+ <http://www.gnu.org/licenses/>.  */
+-#ifdef __GNUC__
+-__inline
+-#endif
+-static unsigned int hash (const char *, unsigned int);
+-#ifdef __GNUC__
+-__inline
+-#endif
+-const char * libc_name_p (const char *, unsigned int);
+ /* maximum key range = 391, duplicates = 0 */
+ 
+-#ifdef __GNUC__
+-__inline
+-#else
+-#ifdef __cplusplus
+-inline
+-#endif
+-#endif
+-static unsigned int
+-hash (register const char *str, register unsigned int len)
++class libc_name
++{
++private:
++  static inline unsigned int hash (const char *str, unsigned int len);
++public:
++  static const char *libc_name_p (const char *str, unsigned int len);
++};
++
++inline unsigned int
++libc_name::hash (register const char *str, register unsigned int len)
+ {
+   static const unsigned short asso_values[] =
+     {
+@@ -122,14 +115,8 @@ hash (register const char *str, register unsigned int len)
+   return hval + asso_values[(unsigned char)str[len - 1]];
+ }
+ 
+-#ifdef __GNUC__
+-__inline
+-#ifdef __GNUC_STDC_INLINE__
+-__attribute__ ((__gnu_inline__))
+-#endif
+-#endif
+ const char *
+-libc_name_p (register const char *str, register unsigned int len)
++libc_name::libc_name_p (register const char *str, register unsigned int len)
+ {
+   enum
+     {
+diff --git a/gcc/cp/except.c b/gcc/cp/except.c
+index c73a16b..5336710 100644
+--- a/gcc/cp/except.c
++++ b/gcc/cp/except.c
+@@ -1040,7 +1040,8 @@ nothrow_libfn_p (const_tree fn)
+      unless the system headers are playing rename tricks, and if
+      they are, we don't want to be confused by them.  */
+   id = DECL_NAME (fn);
+-  return !!libc_name_p (IDENTIFIER_POINTER (id), IDENTIFIER_LENGTH (id));
++  return !!libc_name::libc_name_p (IDENTIFIER_POINTER (id),
++				   IDENTIFIER_LENGTH (id));
+ }
+ 
+ /* Returns nonzero if an exception of type FROM will be caught by a
+-- 
+2.9.3
+
diff --git a/openpower/package/ppe42-gcc/ppe42-gcc.mk b/openpower/package/ppe42-gcc/ppe42-gcc.mk
index 2ebdf5b..0a8bc23 100644
--- a/openpower/package/ppe42-gcc/ppe42-gcc.mk
+++ b/openpower/package/ppe42-gcc/ppe42-gcc.mk
@@ -25,8 +25,8 @@
                     --with-gmp=$(HOST_DIR)/usr \
                     --with-mpfr=$(HOST_DIR)/usr \
                     && \
-        make configure-host && \
-        make all-gcc
+        $(MAKE) configure-host && \
+        $(MAKE) CFLAGS=-Wno-error all-gcc
 endef
 
 define HOST_PPE42_GCC_INSTALL_CMDS