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Fix the include directories for cross compilation automagically
(patch by Ned Ludd <solar@gentoo.org> on the Gentoo embedded mailinglist 2008-09-21)
--- gcc/c-incpath.c 2007-09-01 08:28:30.000000000 -0700
+++ gcc/c-incpath.c 2008-09-19 20:32:27.000000000 -0700
@@ -332,6 +332,32 @@
tails[chain] = p;
}
+#ifdef CROSS_COMPILE
+/* Rewrite the include paths for cross compiles */
+char *cross_fixup_path(char *path);
+char *cross_fixup_path(char *path) {
+ char *name, *root, *ptr;
+ int len;
+
+ root = getenv("ROOT");
+ if (root == NULL)
+ return name;
+
+ if (strstr(path, "/usr/include") != path)
+ return path;
+
+ name = xstrdup(path);
+ len = strlen(root) + strlen(name) + 2;
+ ptr = (char *) xmalloc (len);
+ sprintf(ptr, "%s/%s", root, name);
+ fprintf(stderr, _("Autofixing Invalid Cross Include Path: %s -> %s\n"), name, ptr);
+ free(path);
+ path = ptr;
+ name = path;
+ return name;
+}
+#endif
+
/* Add PATH to the include chain CHAIN. PATH must be malloc-ed and
NUL-terminated. */
void
@@ -359,6 +385,11 @@
p->construct = 0;
p->user_supplied_p = user_supplied_p;
+#ifdef CROSS_COMPILE
+ path = cross_fixup_path(path);
+ p->name = path;
+#endif
+
add_cpp_dir_path (p, chain);
}
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