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-rw-r--r--toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch181
1 files changed, 181 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch b/toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch
new file mode 100644
index 0000000000..60729dd7fe
--- /dev/null
+++ b/toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch
@@ -0,0 +1,181 @@
+commit 331735a357a73c7b8adc205241ac3cc6543d985e
+Author: Felix Fietkau <nbd@openwrt.org>
+Date: Tue Nov 17 12:38:22 2015 +0000
+
+ gcc: add a patch to 5.x that supports translation of __FILE__ paths
+
+ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+ SVN-Revision: 47490
+
+Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
+
+--- a/gcc/c-family/c-opts.c
++++ b/gcc/c-family/c-opts.c
+@@ -588,6 +588,10 @@ c_common_handle_option (size_t scode, co
+ add_path (xstrdup (arg), SYSTEM, 0, true);
+ break;
+
++ case OPT_iremap:
++ add_cpp_remap_path (arg);
++ break;
++
+ case OPT_iwithprefix:
+ add_prefixed_path (arg, SYSTEM);
+ break;
+--- a/gcc/c-family/c.opt
++++ b/gcc/c-family/c.opt
+@@ -1825,6 +1825,10 @@ iquote
+ C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
+ -iquote <dir> Add <dir> to the end of the quote include path.
+
++iremap
++C ObjC C++ ObjC++ Joined Separate
++-iremap <src:dst> Convert <src> to <dst> if it occurs as prefix in __FILE__.
++
+ iwithprefix
+ C ObjC C++ ObjC++ Joined Separate
+ -iwithprefix <dir> Add <dir> to the end of the system include path.
+--- a/gcc/doc/cpp.texi
++++ b/gcc/doc/cpp.texi
+@@ -4272,6 +4272,7 @@ Refer to the GCC manual for full documen
+ @c man begin SYNOPSIS
+ cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
+ [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}]
++ [@option{-iremap}@var{src}:@var{dst}]
+ [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}]
+ [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
+ [@option{-MT} @var{target}@dots{}]
+--- a/gcc/doc/cppopts.texi
++++ b/gcc/doc/cppopts.texi
+@@ -220,6 +220,12 @@ extensions @samp{.i}, @samp{.ii} or @sam
+ extensions that GCC uses for preprocessed files created by
+ @option{-save-temps}.
+
++@item -iremap @var{src}:@var{dst}
++@opindex iremap
++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
++This option can be specified more than once. Processing stops at the first
++match.
++
+ @item -fdirectives-only
+ @opindex fdirectives-only
+ When preprocessing, handle directives, but do not expand macros.
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -11863,6 +11863,12 @@ by @option{-fplugin=@var{name}} instead
+ @option{-fplugin=@var{path}/@var{name}.so}. This option is not meant
+ to be used by the user, but only passed by the driver.
+
++@item -iremap @var{src}:@var{dst}
++@opindex iremap
++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
++This option can be specified more than once. Processing stops at the first
++match.
++
+ @item -L@var{dir}
+ @opindex L
+ Add directory @var{dir} to the list of directories to be searched
+--- a/libcpp/include/cpplib.h
++++ b/libcpp/include/cpplib.h
+@@ -820,6 +820,9 @@ extern void cpp_set_lang (cpp_reader *,
+ /* Set the include paths. */
+ extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
+
++/* Provide src:dst pair for __FILE__ remapping. */
++extern void add_cpp_remap_path (const char *);
++
+ /* Call these to get pointers to the options, callback, and deps
+ structures for a given reader. These pointers are good until you
+ call cpp_finish on that reader. You can either edit the callbacks
+--- a/libcpp/macro.c
++++ b/libcpp/macro.c
+@@ -227,6 +227,64 @@ static const char * const monthnames[] =
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+
++static size_t remap_pairs;
++static char **remap_src;
++static char **remap_dst;
++
++void
++add_cpp_remap_path (const char *arg)
++{
++ const char *arg_dst;
++ size_t len;
++
++ arg_dst = strchr(arg, ':');
++ if (arg_dst == NULL)
++ {
++ fprintf(stderr, "Invalid argument for -iremap\n");
++ exit(1);
++ }
++
++ len = arg_dst - arg;
++ ++arg_dst;
++
++ remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1));
++ remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1));
++
++ remap_src[remap_pairs] = (char *) xmalloc(len + 1);
++ memcpy(remap_src[remap_pairs], arg, len);
++ remap_src[remap_pairs][len] = '\0';
++ remap_dst[remap_pairs] = xstrdup(arg_dst);
++ ++remap_pairs;
++}
++
++static const char *
++cpp_remap_file (const char *arg, char **tmp_name)
++{
++ char *result;
++ size_t i, len;
++
++ for (i = 0; i < remap_pairs; ++i)
++ {
++ len = strlen (remap_src[i]);
++ if (strncmp (remap_src[i], arg, len))
++ continue;
++ if (arg[len] == '\0')
++ return xstrdup (remap_dst[i]);
++ if (arg[len] != '/')
++ continue;
++ arg += len;
++ len = strlen (remap_dst[i]);
++ result = (char *) xmalloc (len + strlen (arg) + 1);
++ memcpy(result, remap_dst[i], len);
++ strcpy(result + len, arg);
++ *tmp_name = result;
++
++ return result;
++ }
++
++ return arg;
++}
++
+ /* Helper function for builtin_macro. Returns the text generated by
+ a builtin macro. */
+ const uchar *
+@@ -290,6 +348,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ {
+ unsigned int len;
+ const char *name;
++ char *tmp_name = NULL;
+ uchar *buf;
+
+ if (node->value.builtin == BT_FILE)
+@@ -301,6 +360,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ if (!name)
+ abort ();
+ }
++ name = cpp_remap_file (name, &tmp_name);
+ len = strlen (name);
+ buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
+ result = buf;
+@@ -308,6 +368,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len);
+ *buf++ = '"';
+ *buf = '\0';
++ free (tmp_name);
+ }
+ break;
+