diff options
Diffstat (limited to 'toolchain/gcc/patches/7.2.0/910-mbsd_multi.patch')
| -rw-r--r-- | toolchain/gcc/patches/7.2.0/910-mbsd_multi.patch | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/7.2.0/910-mbsd_multi.patch b/toolchain/gcc/patches/7.2.0/910-mbsd_multi.patch new file mode 100644 index 0000000000..286cfadae7 --- /dev/null +++ b/toolchain/gcc/patches/7.2.0/910-mbsd_multi.patch @@ -0,0 +1,146 @@ +commit 99368862e44740ff4fd33760893f04e14f9dbdf1 +Author: Felix Fietkau <nbd@openwrt.org> +Date: Tue Jul 31 00:52:27 2007 +0000 + + 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 + + SVN-Revision: 8256 + + This patch brings over a feature from MirBSD: + * -fhonour-copts + If this option is not given, it's warned (depending + on environment variables). This is to catch errors + of misbuilt packages which override CFLAGS themselves. + + This patch was authored by Thorsten Glaser <tg at mirbsd.de> + with copyright assignment to the FSF in effect. + +--- a/gcc/c-family/c-opts.c ++++ b/gcc/c-family/c-opts.c +@@ -108,6 +108,9 @@ static int class_dump_flags; + /* 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); +@@ -456,6 +459,12 @@ c_common_handle_option (size_t scode, co + 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; +@@ -1084,6 +1093,47 @@ c_common_init (void) + 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; + } + +--- a/gcc/c-family/c.opt ++++ b/gcc/c-family/c.opt +@@ -1412,6 +1412,9 @@ C++ ObjC++ Optimization Alias(fexception + 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. +--- a/gcc/common.opt ++++ b/gcc/common.opt +@@ -1510,6 +1510,9 @@ fguess-branch-probability + 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 +--- a/gcc/opts.c ++++ b/gcc/opts.c +@@ -1928,6 +1928,9 @@ common_handle_option (struct gcc_options + opts, opts_set, loc, dc); + break; + ++ case OPT_fhonour_copts: ++ break; ++ + case OPT_Wlarger_than_: + opts->x_larger_than_size = value; + opts->x_warn_larger_than = value != -1; +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -6567,6 +6567,17 @@ This option is only supported for C and + @option{-Wall} and by @option{-Wpedantic}, which can be disabled with + @option{-Wno-pointer-sign}. + ++@item -fhonour-copts ++@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 |