modpost: Optionally ignore secondary errors seen if a single module build fails

[karo-tx-linux.git] / scripts / mod / modpost.c

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 8247979e8f64dd2eef5671544d3b39e8ed3487fc..393706b3777430b0f4f4b29bd814d5602c655421 100644 (file)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -17,6 +17,7 @@
 #include <string.h>
 #include <limits.h>
 #include <stdbool.h>
+#include <errno.h>
 #include "modpost.h"
 #include "../../include/generated/autoconf.h"
 #include "../../include/linux/license.h"
@@ -37,6 +38,8 @@ static int warn_unresolved = 0;
 /* How a symbol is exported */
 static int sec_mismatch_count = 0;
 static int sec_mismatch_verbose = 1;
+/* ignore missing files */
+static int ignore_missing_files;
 
 enum export {
        export_plain,      export_unused,     export_gpl,
@@ -407,6 +410,11 @@ static int parse_elf(struct elf_info *info, const char *filename)
 
        hdr = grab_file(filename, &info->size);
        if (!hdr) {
+               if (ignore_missing_files) {
+                       fprintf(stderr, "%s: %s (ignored)\n", filename,
+                               strerror(errno));
+                       return 0;
+               }
                perror(filename);
                exit(1);
        }
@@ -2119,7 +2127,7 @@ int main(int argc, char **argv)
        struct ext_sym_list *extsym_iter;
        struct ext_sym_list *extsym_start = NULL;
 
-       while ((opt = getopt(argc, argv, "i:I:e:msST:o:awM:K:")) != -1) {
+       while ((opt = getopt(argc, argv, "i:I:e:mnsST:o:awM:K:")) != -1) {
                switch (opt) {
                case 'i':
                        kernel_read = optarg;
@@ -2139,6 +2147,9 @@ int main(int argc, char **argv)
                case 'm':
                        modversions = 1;
                        break;
+               case 'n':
+                       ignore_missing_files = 1;
+                       break;
                case 'o':
                        dump_write = optarg;
                        break;