[PATCH] Replace hard-coded MODVERDIR in modpost

When building external modules, MODVERDIR is relative to the external
module instead of in the kernel source tree.  Use the MODVERDIR environment
variable instead of the hard-coded path in modpost.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

scripts/mod/sumversion.c

@@ -416,7 +416,8 @@ static int get_version(const char *modname, char sum[])
 	struct md4_ctx md;
 	char *sources, *end, *fname;
 	const char *basename;
-	char filelist[sizeof(".tmp_versions/%s.mod") + strlen(modname)];
+	char filelist[strlen(getenv("MODVERDIR")) + strlen("/") +
+		      strlen(modname) - strlen(".o") + strlen(".mod") + 1 ];
 
 	/* Source files for module are in .tmp_versions/modname.mod,
 	   after the first line. */
@@ -424,9 +425,8 @@ static int get_version(const char *modname, char sum[])
 		basename = strrchr(modname, '/') + 1;
 	else
 		basename = modname;
-	sprintf(filelist, ".tmp_versions/%s", basename);
-	/* Truncate .o, add .mod */
-	strcpy(filelist + strlen(filelist)-2, ".mod");
+	sprintf(filelist, "%s/%.*s.mod", getenv("MODVERDIR"),
+		(int) strlen(basename) - 2, basename);
 
 	file = grab_file(filelist, &len);
 	if (!file) {