OpenWrt – Blame information for rev 1
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1 | office | 1 | commit 99368862e44740ff4fd33760893f04e14f9dbdf1 |
2 | Author: Felix Fietkau <nbd@openwrt.org> |
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3 | Date: Tue Jul 31 00:52:27 2007 +0000 |
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4 | |||
5 | Port the mbsd_multi patch from freewrt, which adds -fhonour-copts. This will emit warnings in packages that don't use our target cflags properly |
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6 | |||
7 | SVN-Revision: 8256 |
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8 | |||
9 | This patch brings over a feature from MirBSD: |
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10 | * -fhonour-copts |
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11 | If this option is not given, it's warned (depending |
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12 | on environment variables). This is to catch errors |
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13 | of misbuilt packages which override CFLAGS themselves. |
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14 | |||
15 | This patch was authored by Thorsten Glaser <tg at mirbsd.de> |
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16 | with copyright assignment to the FSF in effect. |
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17 | |||
18 | --- a/gcc/c-family/c-opts.c |
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19 | +++ b/gcc/c-family/c-opts.c |
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20 | @@ -108,6 +108,9 @@ static int class_dump_flags; |
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21 | /* Whether any standard preincluded header has been preincluded. */ |
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22 | static bool done_preinclude; |
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23 | |||
24 | +/* Check if a port honours COPTS. */ |
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25 | +static int honour_copts = 0; |
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26 | + |
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27 | static void handle_OPT_d (const char *); |
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28 | static void set_std_cxx98 (int); |
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29 | static void set_std_cxx11 (int); |
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30 | @@ -456,6 +459,12 @@ c_common_handle_option (size_t scode, co |
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31 | flag_no_builtin = !value; |
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32 | break; |
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33 | |||
34 | + case OPT_fhonour_copts: |
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35 | + if (c_language == clk_c) { |
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36 | + honour_copts++; |
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37 | + } |
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38 | + break; |
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39 | + |
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40 | case OPT_fconstant_string_class_: |
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41 | constant_string_class_name = arg; |
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42 | break; |
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43 | @@ -1084,6 +1093,47 @@ c_common_init (void) |
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44 | return false; |
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45 | } |
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46 | |||
47 | + if (c_language == clk_c) { |
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48 | + char *ev = getenv ("GCC_HONOUR_COPTS"); |
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49 | + int evv; |
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50 | + if (ev == NULL) |
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51 | + evv = -1; |
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52 | + else if ((*ev == '0') || (*ev == '\0')) |
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53 | + evv = 0; |
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54 | + else if (*ev == '1') |
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55 | + evv = 1; |
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56 | + else if (*ev == '2') |
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57 | + evv = 2; |
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58 | + else if (*ev == 's') |
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59 | + evv = -1; |
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60 | + else { |
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61 | + warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1"); |
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62 | + evv = 1; /* maybe depend this on something like MIRBSD_NATIVE? */ |
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63 | + } |
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64 | + if (evv == 1) { |
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65 | + if (honour_copts == 0) { |
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66 | + error ("someone does not honour COPTS at all in lenient mode"); |
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67 | + return false; |
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68 | + } else if (honour_copts != 1) { |
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69 | + warning (0, "someone does not honour COPTS correctly, passed %d times", |
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70 | + honour_copts); |
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71 | + } |
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72 | + } else if (evv == 2) { |
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73 | + if (honour_copts == 0) { |
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74 | + error ("someone does not honour COPTS at all in strict mode"); |
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75 | + return false; |
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76 | + } else if (honour_copts != 1) { |
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77 | + error ("someone does not honour COPTS correctly, passed %d times", |
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78 | + honour_copts); |
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79 | + return false; |
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80 | + } |
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81 | + } else if (evv == 0) { |
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82 | + if (honour_copts != 1) |
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83 | + inform (0, "someone does not honour COPTS correctly, passed %d times", |
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84 | + honour_copts); |
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85 | + } |
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86 | + } |
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87 | + |
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88 | return true; |
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89 | } |
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90 | |||
91 | --- a/gcc/c-family/c.opt |
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92 | +++ b/gcc/c-family/c.opt |
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93 | @@ -1412,6 +1412,9 @@ C++ ObjC++ Optimization Alias(fexception |
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94 | fhonor-std |
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95 | C++ ObjC++ Ignore Warn(switch %qs is no longer supported) |
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96 | |||
97 | +fhonour-copts |
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98 | +C ObjC C++ ObjC++ RejectNegative |
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99 | + |
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100 | fhosted |
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101 | C ObjC |
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102 | Assume normal C execution environment. |
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103 | --- a/gcc/common.opt |
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104 | +++ b/gcc/common.opt |
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105 | @@ -1510,6 +1510,9 @@ fguess-branch-probability |
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106 | Common Report Var(flag_guess_branch_prob) Optimization |
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107 | Enable guessing of branch probabilities. |
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108 | |||
109 | +fhonour-copts |
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110 | +Common RejectNegative |
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111 | + |
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112 | ; Nonzero means ignore `#ident' directives. 0 means handle them. |
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113 | ; Generate position-independent code for executables if possible |
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114 | ; On SVR4 targets, it also controls whether or not to emit a |
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115 | --- a/gcc/opts.c |
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116 | +++ b/gcc/opts.c |
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117 | @@ -1928,6 +1928,9 @@ common_handle_option (struct gcc_options |
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118 | opts, opts_set, loc, dc); |
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119 | break; |
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120 | |||
121 | + case OPT_fhonour_copts: |
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122 | + break; |
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123 | + |
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124 | case OPT_Wlarger_than_: |
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125 | opts->x_larger_than_size = value; |
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126 | opts->x_warn_larger_than = value != -1; |
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127 | --- a/gcc/doc/invoke.texi |
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128 | +++ b/gcc/doc/invoke.texi |
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129 | @@ -6567,6 +6567,17 @@ This option is only supported for C and |
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130 | @option{-Wall} and by @option{-Wpedantic}, which can be disabled with |
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131 | @option{-Wno-pointer-sign}. |
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132 | |||
133 | +@item -fhonour-copts |
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134 | +@opindex fhonour-copts |
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135 | +If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not |
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136 | +given at least once, and warn if it is given more than once. |
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137 | +If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not |
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138 | +given exactly once. |
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139 | +If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option |
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140 | +is not given exactly once. |
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141 | +The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}. |
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142 | +This flag and environment variable only affect the C language. |
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143 | + |
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144 | @item -Wstack-protector |
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145 | @opindex Wstack-protector |
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146 | @opindex Wno-stack-protector |