toolchain/gcc/patches/4.9.4/cflags.patch

   1 diff -Nur gcc-4.9.1.orig/gcc/c-family/c-opts.c gcc-4.9.1/gcc/c-family/c-opts.c
   2 --- gcc-4.9.1.orig/gcc/c-family/c-opts.c        2014-05-06 12:48:08.000000000 +0200
   3 +++ gcc-4.9.1/gcc/c-family/c-opts.c     2014-08-05 15:54:02.000000000 +0200
   4 @@ -105,6 +105,9 @@
   5  /* Whether any standard preincluded header has been preincluded.  */
   6  static bool done_preinclude;
   7
   8 +/* Check if a port honours COPTS.  */
   9 +static int honour_copts = 0;
  10 +
  11  static void handle_OPT_d (const char *);
  12  static void set_std_cxx98 (int);
  13  static void set_std_cxx11 (int);
  14 @@ -492,6 +495,12 @@
  15        flag_no_builtin = !value;
  16        break;
  17
  18 +    case OPT_fhonour_copts:
  19 +      if (c_language == clk_c) {
  20 +        honour_copts++;
  21 +      }
  22 +      break;
  23 +
  24      case OPT_fconstant_string_class_:
  25        constant_string_class_name = arg;
  26        break;
  27 @@ -1048,6 +1057,47 @@
  28        return false;
  29      }
  30
  31 +  if (c_language == clk_c) {
  32 +    char *ev = getenv ("GCC_HONOUR_COPTS");
  33 +    int evv;
  34 +    if (ev == NULL)
  35 +      evv = -1;
  36 +    else if ((*ev == '0') || (*ev == '\0'))
  37 +      evv = 0;
  38 +    else if (*ev == '1')
  39 +      evv = 1;
  40 +    else if (*ev == '2')
  41 +      evv = 2;
  42 +    else if (*ev == 's')
  43 +      evv = -1;
  44 +    else {
  45 +      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
  46 +      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
  47 +    }
  48 +    if (evv == 1) {
  49 +      if (honour_copts == 0) {
  50 +        error ("someone does not honour COPTS at all in lenient mode");
  51 +        return false;
  52 +      } else if (honour_copts != 1) {
  53 +        warning (0, "someone does not honour COPTS correctly, passed %d times",
  54 +         honour_copts);
  55 +      }
  56 +    } else if (evv == 2) {
  57 +      if (honour_copts == 0) {
  58 +        error ("someone does not honour COPTS at all in strict mode");
  59 +        return false;
  60 +      } else if (honour_copts != 1) {
  61 +        error ("someone does not honour COPTS correctly, passed %d times",
  62 +         honour_copts);
  63 +        return false;
  64 +      }
  65 +    } else if (evv == 0) {
  66 +      if (honour_copts != 1)
  67 +        inform (0, "someone does not honour COPTS correctly, passed %d times",
  68 +         honour_copts);
  69 +    }
  70 +  }
  71 +
  72    return true;
  73  }
  74
  75 diff -Nur gcc-4.9.1.orig/gcc/c-family/c.opt gcc-4.9.1/gcc/c-family/c.opt
  76 --- gcc-4.9.1.orig/gcc/c-family/c.opt   2014-04-03 15:41:55.000000000 +0200
  77 +++ gcc-4.9.1/gcc/c-family/c.opt        2014-08-05 15:54:02.000000000 +0200
  78 @@ -391,6 +391,10 @@
  79  C ObjC C++ ObjC++ Var(warn_float_conversion) LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
  80  Warn for implicit type conversions that cause loss of floating point precision
  81
  82 +Werror-maybe-reset
  83 +C ObjC C++ ObjC++
  84 +; Documented in common.opt
  85 +
  86  Wfloat-equal
  87  C ObjC C++ ObjC++ Var(warn_float_equal) Warning
  88  Warn if testing floating point numbers for equality
  89 @@ -972,6 +976,9 @@
  90  fhonor-std
  91  C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
  92
  93 +fhonour-copts
  94 +C ObjC C++ ObjC++ RejectNegative
  95 +
  96  fhosted
  97  C ObjC
  98  Assume normal C execution environment
  99 diff -Nur gcc-4.9.1.orig/gcc/common.opt gcc-4.9.1/gcc/common.opt
 100 --- gcc-4.9.1.orig/gcc/common.opt       2014-04-07 15:27:39.000000000 +0200
 101 +++ gcc-4.9.1/gcc/common.opt    2014-08-05 15:54:02.000000000 +0200
 102 @@ -549,6 +549,10 @@
 103  Common Joined
 104  Treat specified warning as error
 105
 106 +Werror-maybe-reset
 107 +Common
 108 +If environment variable GCC_NO_WERROR is set, act as -Wno-error
 109 +
 110  Wextra
 111  Common Var(extra_warnings) Warning
 112  Print extra (possibly unwanted) warnings
 113 @@ -1287,6 +1291,9 @@
 114  Common Report Var(flag_guess_branch_prob) Optimization
 115  Enable guessing of branch probabilities
 116
 117 +fhonour-copts
 118 +Common RejectNegative
 119 +
 120  ; Nonzero means ignore `#ident' directives.  0 means handle them.
 121  ; Generate position-independent code for executables if possible
 122  ; On SVR4 targets, it also controls whether or not to emit a
 123 diff -Nur gcc-4.9.1.orig/gcc/doc/cppopts.texi gcc-4.9.1/gcc/doc/cppopts.texi
 124 --- gcc-4.9.1.orig/gcc/doc/cppopts.texi 2014-01-02 23:23:26.000000000 +0100
 125 +++ gcc-4.9.1/gcc/doc/cppopts.texi      2014-08-05 15:54:02.000000000 +0200
 126 @@ -163,6 +163,11 @@
 127  Make all warnings into hard errors.  Source code which triggers warnings
 128  will be rejected.
 129
 130 + at item -Werror-maybe-reset
 131 + at opindex Werror-maybe-reset
 132 +Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
 133 +variable is set to anything other than 0 or empty.
 134 +
 135  @item -Wsystem-headers
 136  @opindex Wsystem-headers
 137  Issue warnings for code in system headers.  These are normally unhelpful
 138 diff -Nur gcc-4.9.1.orig/gcc/doc/invoke.texi gcc-4.9.1/gcc/doc/invoke.texi
 139 --- gcc-4.9.1.orig/gcc/doc/invoke.texi  2014-05-28 13:37:50.000000000 +0200
 140 +++ gcc-4.9.1/gcc/doc/invoke.texi       2014-08-05 15:54:02.000000000 +0200
 141 @@ -243,7 +243,7 @@
 142  -Wconversion -Wcoverage-mismatch -Wdate-time -Wdelete-incomplete -Wno-cpp  @gol
 143  -Wno-deprecated -Wno-deprecated-declarations -Wdisabled-optimization  @gol
 144  -Wno-div-by-zero -Wdouble-promotion -Wempty-body  -Wenum-compare @gol
 145 --Wno-endif-labels -Werror  -Werror=* @gol
 146 +-Wno-endif-labels -Werror  -Werror=* -Werror-maybe-reset @gol
 147  -Wfatal-errors  -Wfloat-equal  -Wformat  -Wformat=2 @gol
 148  -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
 149  -Wformat-security  -Wformat-y2k @gol
 150 @@ -5041,6 +5041,22 @@
 151  @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
 152  @option{-Wno-pointer-sign}.
 153
 154 + at item -Werror-maybe-reset
 155 + at opindex Werror-maybe-reset
 156 +Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
 157 +variable is set to anything other than 0 or empty.
 158 +
 159 + at item -fhonour-copts
 160 + at opindex fhonour-copts
 161 +If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
 162 +given at least once, and warn if it is given more than once.
 163 +If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
 164 +given exactly once.
 165 +If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
 166 +is not given exactly once.
 167 +The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
 168 +This flag and environment variable only affect the C language.
 169 +
 170  @item -Wstack-protector
 171  @opindex Wstack-protector
 172  @opindex Wno-stack-protector
 173 @@ -7188,7 +7204,7 @@
 174  second branch or a point immediately following it, depending on whether
 175  the condition is known to be true or false.
 176
 177 -Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
 178 +Enabled at levels @option{-O3}.
 179
 180  @item -fsplit-wide-types
 181  @opindex fsplit-wide-types
 182 diff -Nur gcc-4.9.1.orig/gcc/java/jvspec.c gcc-4.9.1/gcc/java/jvspec.c
 183 --- gcc-4.9.1.orig/gcc/java/jvspec.c    2014-01-02 23:23:26.000000000 +0100
 184 +++ gcc-4.9.1/gcc/java/jvspec.c 2014-08-05 15:54:02.000000000 +0200
 185 @@ -626,6 +626,7 @@
 186       class name.  Append dummy `.c' that can be stripped by set_input so %b
 187       is correct.  */
 188    set_input (concat (main_class_name, "main.c", NULL));
 189 +  putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack!  */
 190    err = do_spec (jvgenmain_spec);
 191    if (err == 0)
 192      {
 193 diff -Nur gcc-4.9.1.orig/gcc/opts.c gcc-4.9.1/gcc/opts.c
 194 --- gcc-4.9.1.orig/gcc/opts.c   2014-05-18 00:20:43.000000000 +0200
 195 +++ gcc-4.9.1/gcc/opts.c        2014-08-05 15:54:02.000000000 +0200
 196 @@ -499,6 +499,8 @@
 197      { OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
 198
 199      /* -O3 optimizations.  */
 200 +    { OPT_LEVELS_3_PLUS, OPT_fstrict_aliasing, NULL, 1 },
 201 +    { OPT_LEVELS_3_PLUS, OPT_fstrict_overflow, NULL, 1 },
 202      { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
 203      { OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
 204      /* Inlining of functions reducing size is a good idea with -Os
 205 @@ -1536,6 +1538,17 @@
 206                                opts, opts_set, loc, dc);
 207        break;
 208
 209 +    case OPT_Werror_maybe_reset:
 210 +      {
 211 +        char *ev = getenv ("GCC_NO_WERROR");
 212 +        if ((ev != NULL) && (*ev != '0'))
 213 +          warnings_are_errors = 0;
 214 +      }
 215 +      break;
 216 +
 217 +    case OPT_fhonour_copts:
 218 +      break;
 219 +
 220      case OPT_Wlarger_than_:
 221        opts->x_larger_than_size = value;
 222        opts->x_warn_larger_than = value != -1;