fix extra bogus files generation in include/config/*

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 13 insertions, 7 deletions

diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index bbb575cec..1a5b10f84 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -243,22 +243,27 @@ void parse_config_file(char *map, size_t len)
                         if (!memcmp(p, "IF_NOT", 6)) goto conf7;
                 }
                 /* we have at least 3 chars because of p <= end_3 */
-                /*if (!memcmp(p, "IF_", 3)) goto conf3;*/
-                if (p[0] == 'I' && p[1] == 'F' && p[2] == '_') goto conf3;
+                /*if (!memcmp(p, "IF_", 3)) ...*/
+                if (p[0] == 'I' && p[1] == 'F' && p[2] == '_') {
+                        off = 3;
+                        goto conf;
+                }
 
                 /* This identifier is not interesting, skip it */
                 while (p <= end_3 && (isalnum(*p) || *p == '_'))
                         p++;
                 continue;
 
-        conf3:  off = 3;
         conf7:  off = 7;
+        conf:
                 p += off;
                 for (q = p; q < end_3+3; q++) {
                         if (!(isalnum(*q) || *q == '_'))
                                 break;
                 }
-                use_config(p, q-p);
+                if (q != p) {
+                        use_config(p, q-p);
+                }
         }
 }
 
diff --git a/scripts/basic/split-include.c b/scripts/basic/split-include.c
index 60934b5b1..e328788e2 100644
--- a/scripts/basic/split-include.c
+++ b/scripts/basic/split-include.c
@@ -110,11 +110,12 @@ int main(int argc, const char * argv [])
 
         if (line[0] != '#')
             continue;
-        if ((str_config = strstr(line, "CONFIG_")) == NULL)
+        if ((str_config = strstr(line, " CONFIG_")) == NULL)
             continue;
 
-        /* Make the output file name. */
-        str_config += sizeof("CONFIG_") - 1;
+        /* We found #define CONFIG_foo or #undef CONFIG_foo.
+         * Make the output file name. */
+        str_config += sizeof(" CONFIG_") - 1;
         for (itarget = 0; !isspace(str_config[itarget]); itarget++)
         {
             int c = (unsigned char) str_config[itarget];