147 lines
4.4 KiB
Diff
147 lines
4.4 KiB
Diff
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
|
|
@@ -107,6 +107,9 @@ static dump_flags_t original_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);
|
|
@@ -455,6 +458,12 @@ 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;
|
|
@@ -1168,6 +1177,47 @@ 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 (UNKNOWN_LOCATION, "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
|
|
@@ -1590,6 +1590,9 @@ C++ ObjC++ Optimization Alias(fexception
|
|
fhonor-std
|
|
C++ ObjC++ WarnRemoved
|
|
|
|
+fhonour-copts
|
|
+C ObjC C++ ObjC++ RejectNegative
|
|
+
|
|
fhosted
|
|
C ObjC
|
|
Assume normal C execution environment.
|
|
--- a/gcc/common.opt
|
|
+++ b/gcc/common.opt
|
|
@@ -1657,6 +1657,9 @@ 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/doc/invoke.texi
|
|
+++ b/gcc/doc/invoke.texi
|
|
@@ -8169,6 +8169,17 @@ 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
|
|
--- a/gcc/opts.c
|
|
+++ b/gcc/opts.c
|
|
@@ -2308,6 +2308,9 @@ common_handle_option (struct gcc_options
|
|
/* Currently handled in a prescan. */
|
|
break;
|
|
|
|
+ case OPT_fhonour_copts:
|
|
+ break;
|
|
+
|
|
case OPT_Werror:
|
|
dc->warning_as_error_requested = value;
|
|
break;
|