ad experimental gcc 5.1.0 support

2 files changed, 230 insertions, 0 deletions

diff --git a/toolchain/gcc/Makefile.inc b/toolchain/gcc/Makefile.inc
index d7372bc2b..8f9dd8835 100644
--- a/toolchain/gcc/Makefile.inc
+++ b/toolchain/gcc/Makefile.inc
@@ -2,6 +2,14 @@
 # material, please see the LICENCE file in the top-level directory.
 
 PKG_NAME:=		gcc
+ifeq ($(ADK_TOOLCHAIN_GCC_5_1_0),y)
+PKG_VERSION:=		5.1.0
+PKG_HASH:=		335275817b5ed845fee787e75efd76a6e240bfabbe0a0c20a81a04777e204617
+PKG_SITES:=		${MASTER_SITE_GNU:=gcc/gcc-${PKG_VERSION}/}
+PKG_RELEASE:=		1
+DISTFILES:=		${PKG_NAME}-${PKG_VERSION}.tar.gz
+LIBSTDCXXVER:=		21
+endif
 ifeq ($(ADK_TOOLCHAIN_GCC_4_9_2),y)
 PKG_VERSION:=		4.9.2
 PKG_HASH:=		3e573826ec8b0d62d47821408fbc58721cd020df3e594cd492508de487a43b5e
diff --git a/toolchain/gcc/patches/5.1.0/cflags.patch b/toolchain/gcc/patches/5.1.0/cflags.patch
new file mode 100644
index 000000000..7ebb5e548
--- /dev/null
+++ b/toolchain/gcc/patches/5.1.0/cflags.patch
@@ -0,0 +1,222 @@
+diff -Nur gcc-5.1.0.orig/gcc/c-family/c-opts.c gcc-5.1.0/gcc/c-family/c-opts.c
+--- gcc-5.1.0.orig/gcc/c-family/c-opts.c	2015-02-13 06:26:37.000000000 +0100
++++ gcc-5.1.0/gcc/c-family/c-opts.c	2015-05-01 23:07:27.000000000 +0200
+@@ -122,6 +122,9 @@
+ /* Whether any standard preincluded header has been preincluded.  */
+ static bool done_preinclude;
+ 
++/* Check if a port honours COPTS.  */
++static int honour_copts = 0;
++
+ static void handle_OPT_d (const char *);
+ static void set_std_cxx98 (int);
+ static void set_std_cxx11 (int);
+@@ -449,6 +452,12 @@
+       flag_no_builtin = !value;
+       break;
+ 
++    case OPT_fhonour_copts:
++      if (c_language == clk_c) {
++        honour_copts++;
++      }
++      break;
++
+     case OPT_fconstant_string_class_:
+       constant_string_class_name = arg;
+       break;
+@@ -1034,6 +1043,47 @@
+       return false;
+     }
+ 
++  if (c_language == clk_c) {
++    char *ev = getenv ("GCC_HONOUR_COPTS");
++    int evv;
++    if (ev == NULL)
++      evv = -1;
++    else if ((*ev == '0') || (*ev == '\0'))
++      evv = 0;
++    else if (*ev == '1')
++      evv = 1;
++    else if (*ev == '2')
++      evv = 2;
++    else if (*ev == 's')
++      evv = -1;
++    else {
++      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
++      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
++    }
++    if (evv == 1) {
++      if (honour_copts == 0) {
++        error ("someone does not honour COPTS at all in lenient mode");
++        return false;
++      } else if (honour_copts != 1) {
++        warning (0, "someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++      }
++    } else if (evv == 2) {
++      if (honour_copts == 0) {
++        error ("someone does not honour COPTS at all in strict mode");
++        return false;
++      } else if (honour_copts != 1) {
++        error ("someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++        return false;
++      }
++    } else if (evv == 0) {
++      if (honour_copts != 1)
++        inform (0, "someone does not honour COPTS correctly, passed %d times",
++         honour_copts);
++    }
++  }
++
+   return true;
+ }
+ 
+diff -Nur gcc-5.1.0.orig/gcc/c-family/c.opt gcc-5.1.0/gcc/c-family/c.opt
+--- gcc-5.1.0.orig/gcc/c-family/c.opt	2015-03-27 11:29:04.000000000 +0100
++++ gcc-5.1.0/gcc/c-family/c.opt	2015-05-01 23:07:27.000000000 +0200
+@@ -431,6 +431,10 @@
+ C ObjC C++ ObjC++ Var(warn_float_conversion) LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
+ Warn for implicit type conversions that cause loss of floating point precision
+ 
++Werror-maybe-reset
++C ObjC C++ ObjC++
++; Documented in common.opt
++
+ Wfloat-equal
+ C ObjC C++ ObjC++ Var(warn_float_equal) Warning
+ Warn if testing floating point numbers for equality
+@@ -1161,6 +1165,9 @@
+ fhonor-std
+ C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+ 
++fhonour-copts
++C ObjC C++ ObjC++ RejectNegative
++
+ fhosted
+ C ObjC
+ Assume normal C execution environment
+diff -Nur gcc-5.1.0.orig/gcc/common.opt gcc-5.1.0/gcc/common.opt
+--- gcc-5.1.0.orig/gcc/common.opt	2015-02-27 03:06:48.000000000 +0100
++++ gcc-5.1.0/gcc/common.opt	2015-05-01 23:07:27.000000000 +0200
+@@ -561,6 +561,10 @@
+ Common Joined
+ Treat specified warning as error
+ 
++Werror-maybe-reset
++Common
++If environment variable GCC_NO_WERROR is set, act as -Wno-error
++
+ Wextra
+ Common Var(extra_warnings) Warning
+ Print extra (possibly unwanted) warnings
+@@ -1357,6 +1361,9 @@
+ Common Report Var(flag_guess_branch_prob) Optimization
+ Enable guessing of branch probabilities
+ 
++fhonour-copts
++Common RejectNegative
++
+ ; Nonzero means ignore `#ident' directives.  0 means handle them.
+ ; Generate position-independent code for executables if possible
+ ; On SVR4 targets, it also controls whether or not to emit a
+diff -Nur gcc-5.1.0.orig/gcc/doc/cppopts.texi gcc-5.1.0/gcc/doc/cppopts.texi
+--- gcc-5.1.0.orig/gcc/doc/cppopts.texi	2015-03-23 02:12:06.000000000 +0100
++++ gcc-5.1.0/gcc/doc/cppopts.texi	2015-05-01 23:07:27.000000000 +0200
+@@ -163,6 +163,11 @@
+ Make all warnings into hard errors.  Source code which triggers warnings
+ will be rejected.
+ 
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
+ @item -Wsystem-headers
+ @opindex Wsystem-headers
+ Issue warnings for code in system headers.  These are normally unhelpful
+diff -Nur gcc-5.1.0.orig/gcc/doc/invoke.texi gcc-5.1.0/gcc/doc/invoke.texi
+--- gcc-5.1.0.orig/gcc/doc/invoke.texi	2015-04-12 21:29:44.000000000 +0200
++++ gcc-5.1.0/gcc/doc/invoke.texi	2015-05-01 23:07:27.000000000 +0200
+@@ -251,7 +251,7 @@
+ -Wdisabled-optimization @gol
+ -Wno-discarded-qualifiers -Wno-discarded-array-qualifiers @gol
+ -Wno-div-by-zero -Wdouble-promotion -Wempty-body  -Wenum-compare @gol
+--Wno-endif-labels -Werror  -Werror=* @gol
++-Wno-endif-labels -Werror  -Werror=* -Werror-maybe-reset @gol
+ -Wfatal-errors  -Wfloat-equal  -Wformat  -Wformat=2 @gol
+ -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
+ -Wformat-security  -Wformat-signedness  -Wformat-y2k @gol
+@@ -5370,6 +5370,22 @@
+ @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
+ @option{-Wno-pointer-sign}.
+ 
++ at item -Werror-maybe-reset
++ at opindex Werror-maybe-reset
++Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
++variable is set to anything other than 0 or empty.
++
++ at item -fhonour-copts
++ at opindex fhonour-copts
++If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
++given at least once, and warn if it is given more than once.
++If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
++given exactly once.
++If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
++is not given exactly once.
++The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
++This flag and environment variable only affect the C language.
++
+ @item -Wstack-protector
+ @opindex Wstack-protector
+ @opindex Wno-stack-protector
+@@ -7843,7 +7859,7 @@
+ second branch or a point immediately following it, depending on whether
+ the condition is known to be true or false.
+ 
+-Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
++Enabled at levels @option{-O3}.
+ 
+ @item -fsplit-wide-types
+ @opindex fsplit-wide-types
+diff -Nur gcc-5.1.0.orig/gcc/java/jvspec.c gcc-5.1.0/gcc/java/jvspec.c
+--- gcc-5.1.0.orig/gcc/java/jvspec.c	2015-01-30 17:15:00.000000000 +0100
++++ gcc-5.1.0/gcc/java/jvspec.c	2015-05-01 23:07:27.000000000 +0200
+@@ -629,6 +629,7 @@
+      class name.  Append dummy `.c' that can be stripped by set_input so %b
+      is correct.  */ 
+   set_input (concat (main_class_name, "main.c", NULL));
++  putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack!  */
+   err = do_spec (jvgenmain_spec);
+   if (err == 0)
+     {
+diff -Nur gcc-5.1.0.orig/gcc/opts.c gcc-5.1.0/gcc/opts.c
+--- gcc-5.1.0.orig/gcc/opts.c	2015-02-17 22:25:56.000000000 +0100
++++ gcc-5.1.0/gcc/opts.c	2015-05-01 23:07:27.000000000 +0200
+@@ -511,6 +511,8 @@
+     { OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 },
+ 
+     /* -O3 optimizations.  */
++    { OPT_LEVELS_3_PLUS, OPT_fstrict_aliasing, NULL, 1 },
++    { OPT_LEVELS_3_PLUS, OPT_fstrict_overflow, NULL, 1 },
+     { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
+     { OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
+     /* Inlining of functions reducing size is a good idea with -Os
+@@ -1699,6 +1701,17 @@
+ 			       opts, opts_set, loc, dc);
+       break;
+ 
++    case OPT_Werror_maybe_reset:
++      {
++        char *ev = getenv ("GCC_NO_WERROR");
++        if ((ev != NULL) && (*ev != '0'))
++          warnings_are_errors = 0;
++      }
++      break;
++
++    case OPT_fhonour_copts:
++      break;
++
+     case OPT_Wlarger_than_:
+       opts->x_larger_than_size = value;
+       opts->x_warn_larger_than = value != -1;