[gentoo-commits] gentoo commit in src/patchsets/gcc/6.3.0/gentoo: 10_all_default-fortify-source.patch 11_all_default-warn-format-security.patch 12_all_default-warn-trampolines.patch 13_all_default-ssp-fix.patch 25_all_alpha-mieee-default.patch 29_all_arm_armv4t-default.patch 34_all_ia64_note.GNU-stack.patch 42_all_superh_default-multilib.patch 50_all_libiberty-asprintf.patch 51_all_libiberty-pic.patch 54_all_nopie-all-flags.patch 55_all_extra-options.patch 90_all_pr55930-dependency-tracking.patch README.history

[Magnus Granberg (zorry)]

zorry       16/12/25 22:20:41

  Added:                10_all_default-fortify-source.patch
                        11_all_default-warn-format-security.patch
                        12_all_default-warn-trampolines.patch
                        13_all_default-ssp-fix.patch
                        25_all_alpha-mieee-default.patch
                        29_all_arm_armv4t-default.patch
                        34_all_ia64_note.GNU-stack.patch
                        42_all_superh_default-multilib.patch
                        50_all_libiberty-asprintf.patch
                        51_all_libiberty-pic.patch
                        54_all_nopie-all-flags.patch
                        55_all_extra-options.patch
                        90_all_pr55930-dependency-tracking.patch
                        README.history
  Log:
  add gcc-6.3 patchset

Revision  Changes    Path
1.1                  src/patchsets/gcc/6.3.0/gentoo/10_all_default-fortify-source.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/10_all_default-fortify-source.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/10_all_default-fortify-source.patch?rev=1.1&content-type=text/plain

Index: 10_all_default-fortify-source.patch
===================================================================
Enable -D_FORTIFY_SOURCE=2 by default.


--- a/gcc/c-family/c-cppbuiltin.c
+++ b/gcc/c-family/c-cppbuiltin.c
@@ -951,6 +951,9 @@ c_cpp_builtins (cpp_reader *pfile)
   builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0);
   builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0);
 
+  /* Fortify Source enabled by default w/optimization.  */
+  cpp_define (pfile, "_FORTIFY_SOURCE=((defined __OPTIMIZE__ && __OPTIMIZE__ > 0) ? 2 : 0)");
+
   /* Misc.  */
   if (flag_gnu89_inline)
     cpp_define (pfile, "__GNUC_GNU_INLINE__");



1.1                  src/patchsets/gcc/6.3.0/gentoo/11_all_default-warn-format-security.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/11_all_default-warn-format-security.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/11_all_default-warn-format-security.patch?rev=1.1&content-type=text/plain

Index: 11_all_default-warn-format-security.patch
===================================================================
Enable -Wformat and -Wformat-security by default.

--- a/gcc/c-family/c.opt	2016-03-23 18:51:56.000000000 +0100
+++ b/gcc/c-family/c.opt	2016-04-28 23:45:54.063351272 +0200
@@ -459,7 +459,7 @@ C ObjC C++ ObjC++ Var(warn_format_nonlit
 Warn about format strings that are not literals.
 
 Wformat-security
-C ObjC C++ ObjC++ Var(warn_format_security) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
+C ObjC C++ ObjC++ Var(warn_format_security) Init(1) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
 Warn about possible security problems with format functions.
 
 Wformat-signedness
@@ -475,7 +475,7 @@ C ObjC C++ ObjC++ Var(warn_format_zero_l
 Warn about zero-length formats.
 
 Wformat=
-C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
+C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Init(1) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
 Warn about printf/scanf/strftime/strfmon format string anomalies.
 
 Wignored-qualifiers



1.1                  src/patchsets/gcc/6.3.0/gentoo/12_all_default-warn-trampolines.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/12_all_default-warn-trampolines.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/12_all_default-warn-trampolines.patch?rev=1.1&content-type=text/plain

Index: 12_all_default-warn-trampolines.patch
===================================================================
Enable -Wtrampolines by default.

--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -712,7 +712,7 @@ Common Var(warn_system_headers) Warning
 Do not suppress warnings from system headers.
 
 Wtrampolines
-Common Var(warn_trampolines) Warning
+Common Var(warn_trampolines) Init(1) Warning
 Warn whenever a trampoline is generated.
 
 Wtype-limits



1.1                  src/patchsets/gcc/6.3.0/gentoo/13_all_default-ssp-fix.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/13_all_default-ssp-fix.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/13_all_default-ssp-fix.patch?rev=1.1&content-type=text/plain

Index: 13_all_default-ssp-fix.patch
===================================================================
We disable ssp on -nostdlib and -ffreestanding as we did on older gcc
and change the buffer size.

--- a/gcc/c-family/c-opts.c	2016-03-08 23:30:44.000000000 +0100
+++ b/gcc/c-family/c-opts.c	2016-09-18 18:42:10.231644014 +0200
@@ -436,7 +436,15 @@ c_common_handle_option (size_t scode, co
 
     case OPT_ffreestanding:
       value = !value;
+	  if (global_options.x_flag_stack_protect == -1)
+		global_options.x_flag_stack_protect = 0;
       /* Fall through....  */
+
+	case OPT_nostdlib:
+	  if (global_options.x_flag_stack_protect == -1)
+		global_options.x_flag_stack_protect = 0;
+	  /* Fall through....  */
+
     case OPT_fhosted:
       flag_hosted = value;
       flag_no_builtin = !value;
--- a/gcc/c-family/c.opt	2016-03-23 18:51:56.000000000 +0100
+++ b/gcc/c-family/c.opt	2016-09-18 18:46:17.071649782 +0200
@@ -1647,6 +1647,10 @@ nostdinc++
 C++ ObjC++
 Do not search standard system include directories for C++.
 
+nostdlib
+C ObjC C++ ObjC++
+; Documented in common.opt
+
 o
 C ObjC C++ ObjC++ Joined Separate
 ; Documented in common.opt
--- a/gcc/gcc.c	2016-02-19 23:18:38.000000000 +0100
+++ b/gcc/gcc.c	2016-09-18 18:47:35.621651618 +0200
@@ -1132,6 +1143,7 @@ static const char *cc1_options =
  %{-help=*:--help=%*}\
  %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
  %{fsyntax-only:-o %j} %{-param*}\
+ %{nostdlib:-nostdlib}\
  %{coverage:-fprofile-arcs -ftest-coverage}";
 
 static const char *asm_options =
--- a/gcc/params.def	2016-03-30 09:47:40.000000000 +0200
+++ b/gcc/params.def	2016-09-19 12:56:58.443179039 +0200
@@ -673,7 +673,7 @@ DEFPARAM (PARAM_INTEGER_SHARE_LIMIT,
 DEFPARAM (PARAM_SSP_BUFFER_SIZE,
 	  "ssp-buffer-size",
 	  "The lower bound for a buffer to be considered for stack smashing protection.",
-	  8, 1, 0)
+	  4, 1, 0)
 
 DEFPARAM (PARAM_MIN_SIZE_FOR_STACK_SHARING,
 	  "min-size-for-stack-sharing",



1.1                  src/patchsets/gcc/6.3.0/gentoo/25_all_alpha-mieee-default.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/25_all_alpha-mieee-default.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/25_all_alpha-mieee-default.patch?rev=1.1&content-type=text/plain

Index: 25_all_alpha-mieee-default.patch
===================================================================
Set the default behavior on alpha to use -mieee since the large majority of
time we want this (bad/weird things can happen with packages built without
it).

To satisfy those people who may not want -mieee forced on them all the time,
we also provide -mno-ieee.

Patch by Mike Frysinger <vapier@g.o>

Note: upstream doesn't want to take this due to long standing behavior, and
because it'd make behavior across OS's inconsistent:
	https://gcc.gnu.org/ml/gcc-patches/2003-07/msg02144.html

This makes sense for upstream, but Gentoo is more concerned about packages
behaving the same across arches under Linux.

--- a/gcc/config/alpha/alpha.h
+++ b/gcc/config/alpha/alpha.h
@@ -96,6 +96,8 @@ along with GCC; see the file COPYING3.  If not see
   while (0)
 #endif
 
+#define CPP_SPEC "%{!no-ieee:-mieee}"
+
 /* Run-time compilation parameters selecting different hardware subsets.  */
 
 /* Which processor to schedule for. The cpu attribute defines a list that
--- a/gcc/config/alpha/alpha.opt
+++ b/gcc/config/alpha/alpha.opt
@@ -39,7 +39,7 @@ Target RejectNegative Mask(IEEE_CONFORMANT)
 Request IEEE-conformant math library routines (OSF/1).
 
 mieee
-Target Report RejectNegative Mask(IEEE)
+Target Report Mask(IEEE)
 Emit IEEE-conformant code, without inexact exceptions.
 
 mieee-with-inexact



1.1                  src/patchsets/gcc/6.3.0/gentoo/29_all_arm_armv4t-default.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/29_all_arm_armv4t-default.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/29_all_arm_armv4t-default.patch?rev=1.1&content-type=text/plain

Index: 29_all_arm_armv4t-default.patch
===================================================================
gcc defaults to armv5t for all targets even armv4t

http://sourceware.org/ml/crossgcc/2008-05/msg00009.html


--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -45,7 +45,7 @@
    The ARM10TDMI core is the default for armv5t, so set
    SUBTARGET_CPU_DEFAULT to achieve this.  */
 #undef  SUBTARGET_CPU_DEFAULT
-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
 
 /* TARGET_BIG_ENDIAN_DEFAULT is set in
    config.gcc for big endian configurations.  */



1.1                  src/patchsets/gcc/6.3.0/gentoo/34_all_ia64_note.GNU-stack.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/34_all_ia64_note.GNU-stack.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/34_all_ia64_note.GNU-stack.patch?rev=1.1&content-type=text/plain

Index: 34_all_ia64_note.GNU-stack.patch
===================================================================
http://gcc.gnu.org/PR21098


2004-09-20  Jakub Jelinek  <jakub@××××××.com>

	* config/rs6000/ppc-asm.h: Add .note.GNU-stack section also
	on ppc64-linux.

	* config/ia64/lib1funcs.asm: Add .note.GNU-stack section on
	ia64-linux.
	* config/ia64/crtbegin.asm: Likewise.
	* config/ia64/crtend.asm: Likewise.
	* config/ia64/crti.asm: Likewise.
	* config/ia64/crtn.asm: Likewise.

2004-05-14  Jakub Jelinek  <jakub@××××××.com>

	* config/ia64/linux.h (TARGET_ASM_FILE_END): Define.


--- a/gcc/config/ia64/linux.h
+++ b/gcc/config/ia64/linux.h
@@ -24,6 +24,8 @@ a copy of the GCC Runtime Library Exception along with this program;
 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 <http://www.gnu.org/licenses/>.  */
 
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
 /* This is for -profile to use -lc_p instead of -lc.  */
 #undef CC1_SPEC
 #define CC1_SPEC "%{profile:-p} %{G*}"
--- a/gcc/config/rs6000/ppc-asm.h
+++ b/gcc/config/rs6000/ppc-asm.h
@@ -352,7 +352,7 @@ GLUE(.L,name): \
 #endif
 #endif
 
-#if defined __linux__ && !defined __powerpc64__
+#if defined __linux__
 	.section .note.GNU-stack
 	.previous
 #endif
--- a/libgcc/config/ia64/crtbegin.S
+++ b/libgcc/config/ia64/crtbegin.S
@@ -252,3 +252,7 @@ __do_jv_register_classes:
 .weak __cxa_finalize
 #endif
 .weak _Jv_RegisterClasses
+
+#ifdef __linux__
+.section .note.GNU-stack; .previous
+#endif
--- a/libgcc/config/ia64/crtend.S
+++ b/libgcc/config/ia64/crtend.S
@@ -119,3 +119,6 @@ __do_global_ctors_aux:
 
 	br.ret.sptk.many rp
 	.endp __do_global_ctors_aux
+#ifdef __linux__
+.section .note.GNU-stack; .previous
+#endif
--- a/libgcc/config/ia64/crti.S
+++ b/libgcc/config/ia64/crti.S
@@ -49,5 +49,8 @@ _fini:
 	.save rp, r33
 	mov	r33 = b0
 	.body
+#ifdef __linux__
+.section .note.GNU-stack; .previous
+#endif
 
 # end of crti.S
--- a/libgcc/config/ia64/crtn.S
+++ b/libgcc/config/ia64/crtn.S
@@ -39,5 +39,8 @@
 	.restore sp
 	mov	r12 = r35
 	br.ret.sptk.many b0
+#ifdef __linux__
+.section .note.GNU-stack; .previous
+#endif
 
 # end of crtn.S
--- a/libgcc/config/ia64/lib1funcs.S
+++ b/libgcc/config/ia64/lib1funcs.S
@@ -793,3 +793,6 @@ __floattitf:
 	.endp __floattitf
 #endif
 #endif
+#ifdef __linux__
+.section .note.GNU-stack; .previous
+#endif



1.1                  src/patchsets/gcc/6.3.0/gentoo/42_all_superh_default-multilib.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/42_all_superh_default-multilib.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/42_all_superh_default-multilib.patch?rev=1.1&content-type=text/plain

Index: 42_all_superh_default-multilib.patch
===================================================================
The gcc-3.x toolchains would contain all the targets by default.  With gcc-4,
you have to actually list out the multilibs you want or you will end up with
just one when using targets like 'sh4-linux-gnu'.

The resulting toolchain can't even build a kernel as the kernel needs to build
with the nofpu flag to be sure that no fpu ops are generated.

Here we restore the gcc-3.x behavior; the additional overhead of building all
of these multilibs by default is negligible.

https://bugs.gentoo.org/140205
https://bugs.gentoo.org/320251

--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2455,7 +2455,7 @@ sh-*-symbianelf* | sh[12346l]*-*-symbianelf* | \
 	if test "$sh_multilibs" = "default" ; then
 		case ${target} in
 		sh64-superh-linux* | \
-		sh[1234]*)	sh_multilibs=${sh_cpu_target} ;;
+		sh[1234]*)	sh_multilibs=$(echo $(sed -n '/^[[:space:]]*case ${sh_multilib} in/,/)/{s:case ${sh_multilib} in::;s: | *:,:g;s:[\\)]::g;p}' ${srcdir}/config.gcc) | sed 's: ::g') ;;
 		sh64* | sh5*)	sh_multilibs=m5-32media,m5-32media-nofpu,m5-compact,m5-compact-nofpu,m5-64media,m5-64media-nofpu ;;
 		sh-superh-*)	sh_multilibs=m4,m4-single,m4-single-only,m4-nofpu ;;
 		sh*-*-linux*)	sh_multilibs=m1,m3e,m4 ;;



1.1                  src/patchsets/gcc/6.3.0/gentoo/50_all_libiberty-asprintf.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/50_all_libiberty-asprintf.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/50_all_libiberty-asprintf.patch?rev=1.1&content-type=text/plain

Index: 50_all_libiberty-asprintf.patch
===================================================================
2008-07-25  Magnus Granberg  <zorry@×××.nu>

	* include/libiberty.h (asprintf): Don't declare if defined as a macro

--- a/include/libiberty.h
+++ b/include/libiberty.h
@@ -609,8 +609,11 @@ extern int pwait (int, int *, int);
 /* Like sprintf but provides a pointer to malloc'd storage, which must
    be freed by the caller.  */
 
+/* asprintf may be declared as a macro by glibc with __USE_FORTIFY_LEVEL.  */
+#ifndef asprintf
 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
 #endif
+#endif
 
 #if !HAVE_DECL_VASPRINTF
 /* Like vsprintf but provides a pointer to malloc'd storage, which



1.1                  src/patchsets/gcc/6.3.0/gentoo/51_all_libiberty-pic.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/51_all_libiberty-pic.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/51_all_libiberty-pic.patch?rev=1.1&content-type=text/plain

Index: 51_all_libiberty-pic.patch
===================================================================
--- a/libiberty/Makefile.in
+++ b/libiberty/Makefile.in
@@ -246,6 +246,7 @@ $(TARGETLIB): $(REQUIRED_OFILES) $(EXTRA_OFILES) $(LIBOBJS)
 	  $(AR) $(AR_FLAGS) $(TARGETLIB) \
 	    $(REQUIRED_OFILES) $(EXTRA_OFILES) $(LIBOBJS); \
 	  $(RANLIB) $(TARGETLIB); \
+	  cp $(TARGETLIB) ../ ; \
 	  cd ..; \
 	else true; fi
 



1.1                  src/patchsets/gcc/6.3.0/gentoo/54_all_nopie-all-flags.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/54_all_nopie-all-flags.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/54_all_nopie-all-flags.patch?rev=1.1&content-type=text/plain

Index: 54_all_nopie-all-flags.patch
===================================================================
We need to pass NO_PIE_CFLAGS to ALL_* so gcc don't fail when
we compile it with older gcc and pie.

--- a/gcc/Makefile.in	2015-06-25 19:18:12.000000000 +0200
+++ b/gcc/Makefile.in	2016-04-22 00:12:54.029178860 +0200
@@ -991,10 +991,10 @@ ALL_CXXFLAGS = $(T_CFLAGS) $(CFLAGS-$@)
 ALL_CPPFLAGS = $(INCLUDES) $(CPPFLAGS)
 
 # This is the variable to use when using $(COMPILER).
-ALL_COMPILERFLAGS = $(ALL_CXXFLAGS)
+ALL_COMPILERFLAGS = $(NO_PIE_CFLAGS) $(ALL_CXXFLAGS)
 
 # This is the variable to use when using $(LINKER).
-ALL_LINKERFLAGS = $(ALL_CXXFLAGS)
+ALL_LINKERFLAGS = $(NO_PIE_CFLAGS) $(ALL_CXXFLAGS)
 
 # Build and host support libraries.
 



1.1                  src/patchsets/gcc/6.3.0/gentoo/55_all_extra-options.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/55_all_extra-options.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/55_all_extra-options.patch?rev=1.1&content-type=text/plain

Index: 55_all_extra-options.patch
===================================================================
On Hardened we add or remove some options like -fstack-check,
-fstack-protector-all, -fstrict_overflow and -z now

--- a/libgcc/Makefile.in	2011-11-22 04:01:02.000000000 +0100
+++ b/libgcc/Makefile.in	2011-12-25 15:18:22.449610631 +0100
@@ -225,7 +225,7 @@ endif
 LIBGCC2_DEBUG_CFLAGS = -g
 LIBGCC2_CFLAGS = -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) $(HOST_LIBGCC2_CFLAGS) \
 		 $(LIBGCC2_DEBUG_CFLAGS) -DIN_LIBGCC2 \
-		 -fbuilding-libgcc -fno-stack-protector \
+		 -fbuilding-libgcc -fno-stack-protector -fstack-check=no \
 		 $(INHIBIT_LIBC_CFLAGS)
 
 # Additional options to use when compiling libgcc2.a.
@@ -279,7 +290,7 @@ INTERNAL_CFLAGS = $(CFLAGS) $(LIBGCC2_CF
   -finhibit-size-directive -fno-inline -fno-exceptions \
   -fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-tree-vectorize \
   -fbuilding-libgcc -fno-stack-protector $(FORCE_EXPLICIT_EH_REGISTRY) \
-  $(INHIBIT_LIBC_CFLAGS)
+  -fstack-check=no $(INHIBIT_LIBC_CFLAGS)
 
 # Extra flags to use when compiling crt{begin,end}.o.
 CRTSTUFF_T_CFLAGS =
--- a/gcc/defaults.h	2016-01-04 15:30:50.000000000 +0100
+++ b/gcc/defaults.h	2016-05-02 22:23:43.815707806 +0200
@@ -1398,8 +1398,12 @@ see the files COPYING3 and COPYING.RUNTI
 /* Default value for flag_stack_protect when flag_stack_protect is initialized to -1:
    --enable-default-ssp: Default flag_stack_protect to -fstack-protector-strong.
    --disable-default-ssp: Default flag_stack_protect to 0.
+   Hardened: Default flag_stack_protect to -fstack-protector-all.
  */
 #ifdef ENABLE_DEFAULT_SSP
+# ifdef EXTRA_OPTIONS
+#  define DEFAULT_FLAG_SSP 2
+# endif
 # ifndef DEFAULT_FLAG_SSP
 #  define DEFAULT_FLAG_SSP 3
 # endif
--- a/gcc/gcc.c	2016-02-19 23:18:38.000000000 +0100
+++ b/gcc/gcc.c	2016-05-02 22:56:10.185721270 +0200
@@ -868,6 +868,13 @@ proper position among the other output f
 #endif
 #endif
 
+#define STACK_CHECK_SPEC "%{fstack-check|fstack-check=*:;: -fstack-check} "
+#ifdef EXTRA_OPTIONS
+#define LINK_NOW_SPEC "%{!nonow:-z now} "
+#else
+#define LINK_NOW_SPEC ""
+#endif
+
 #ifdef ENABLE_DEFAULT_PIE
 #define NO_PIE_SPEC		"no-pie|static"
 #define PIE_SPEC		NO_PIE_SPEC "|r|shared:;"
@@ -1013,7 +1020,7 @@ proper position among the other output f
     %(linker) " \
     LINK_PLUGIN_SPEC \
    "%{flto|flto=*:%<fcompare-debug*} \
-    %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \
+    %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC LINK_NOW_SPEC \
    "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
    "%X %{o*} %{e*} %{N} %{n} %{r}\
     %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} \
@@ -1052,7 +1059,11 @@ proper position among the other output f
 
 static const char *asm_debug = ASM_DEBUG_SPEC;
 static const char *cpp_spec = CPP_SPEC;
+#ifdef EXTRA_OPTIONS
+static const char *cc1_spec = CC1_SPEC STACK_CHECK_SPEC;
+#else
 static const char *cc1_spec = CC1_SPEC;
+#endif
 static const char *cc1plus_spec = CC1PLUS_SPEC;
 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
 static const char *link_ssp_spec = LINK_SSP_SPEC;
--- a/gcc/opts.c	2016-03-17 16:11:35.000000000 +0100
+++ b/gcc/opts.c	2016-04-27 16:48:59.952580580 +0200
@@ -495,7 +495,9 @@ static const struct default_options defa
     { OPT_LEVELS_2_PLUS, OPT_fschedule_insns2, NULL, 1 },
 #endif
     { OPT_LEVELS_2_PLUS, OPT_fstrict_aliasing, NULL, 1 },
+#ifndef EXTRA_OPTIONS
     { OPT_LEVELS_2_PLUS, OPT_fstrict_overflow, NULL, 1 },
+#endif
     { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_freorder_blocks_algorithm_, NULL,
       REORDER_BLOCKS_ALGORITHM_STC },
     { OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 },



1.1                  src/patchsets/gcc/6.3.0/gentoo/90_all_pr55930-dependency-tracking.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/90_all_pr55930-dependency-tracking.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/90_all_pr55930-dependency-tracking.patch?rev=1.1&content-type=text/plain

Index: 90_all_pr55930-dependency-tracking.patch
===================================================================
libatomic build failure if configured with --disable-dependency-tracking
load_n.c:115:1: fatal error: opening dependency file .deps/load_1_.lo.Ppo: No such file or directory

https://bugs.gentoo.org/463463
http://gcc.gnu.org/PR55930

--- a/libatomic/Makefile.in
+++ b/libatomic/Makefile.in
@@ -298,7 +298,8 @@ PAT_N = $(word 2,$(PAT_SPLIT))
 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



1.1                  src/patchsets/gcc/6.3.0/gentoo/README.history

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/README.history?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/6.3.0/gentoo/README.history?rev=1.1&content-type=text/plain

Index: README.history
===================================================================
1.0		24 Dec 2016
	+ 10_all_default-fortify-source.patch
	+ 11_all_default-warn-format-security.patch
	+ 12_all_default-warn-trampolines.patch
	+ 13_all_default-ssp-fix.patch
	+ 25_all_alpha-mieee-default.patch
	+ 29_all_arm_armv4t-default.patch
	+ 34_all_ia64_note.GNU-stack.patch
	+ 42_all_superh_default-multilib.patch
	+ 50_all_libiberty-asprintf.patch
	+ 51_all_libiberty-pic.patch
	+ 54_all_nopie-all-flags.patch
	+ 55_all_extra-options.patch
	+ 90_all_pr55930-dependency-tracking.patch