fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / scripts / basic / fixdep.c

diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 8bd6442..6bc7e7c 100644 (file)
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -28,9 +28,11 @@
  * the dependency on linux/autoconf.h by a dependency on every config
  * option which is mentioned in any of the listed prequisites.
  *
- * To be exact, split-include populates a tree in include/config/,
- * e.g. include/config/his/driver.h, which contains the #define/#undef
- * for the CONFIG_HIS_DRIVER option.
+ * kconfig populates a tree in include/config/ with an empty file
+ * for each config symbol and when the configuration is updated
+ * the files representing changed config options are touched
+ * which then let make pick up the changes and the files that use
+ * the config symbols are rebuilt.
  *
  * So if the user changes his CONFIG_HIS_DRIVER option, only the objects
  * which depend on "include/linux/config/his/driver.h" will be rebuilt,
@@ -93,6 +95,14 @@
  * (Note: it'd be easy to port over the complete mkdep state machine,
  *  but I don't think the added complexity is worth it)
  */
+/*
+ * Note 2: if somebody writes HELLO_CONFIG_BOOM in a file, it will depend onto
+ * CONFIG_BOOM. This could seem a bug (not too hard to fix), but please do not
+ * fix it! Some UserModeLinux files (look at arch/um/) call CONFIG_BOOM as
+ * UML_CONFIG_BOOM, to avoid conflicts with /usr/include/linux/autoconf.h,
+ * through arch/um/include/uml-config.h; this fixdep "bug" makes sure that
+ * those files will have correct dependencies.
+ */
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -104,7 +114,7 @@
 #include <stdio.h>
 #include <limits.h>
 #include <ctype.h>
-#include <netinet/in.h>
+#include <arpa/inet.h>
 
 #define INT_CONF ntohl(0x434f4e46)
 #define INT_ONFI ntohl(0x4f4e4649)
@@ -122,6 +132,9 @@ void usage(void)
        exit(1);
 }
 
+/*
+ * Print out the commandline prefixed with cmd_<target filename> :=
+ */
 void print_cmdline(void)
 {
        printf("cmd_%s := %s\n\n", target, cmdline);
@@ -204,7 +217,7 @@ void use_config(char *m, int slen)
                if (*p == '_')
                        *p = '/';
                else
-                       *p = tolower((unsigned char)*p);
+                       *p = tolower((int)*p);
        }
        printf("    $(wildcard include/config/%s.h) \\\n", s);
 }
@@ -234,6 +247,8 @@ void parse_config_file(char *map, size_t len)
                continue;
 
        found:
+               if (!memcmp(q - 7, "_MODULE", 7))
+                       q -= 7;
                use_config(p+7, q-p-7);
        }
 }
@@ -310,6 +325,7 @@ void parse_dep_file(void *map, size_t len)
                }
                memcpy(s, m, p-m); s[p-m] = 0;
                if (strrcmp(s, "include/linux/autoconf.h") &&
+                   strrcmp(s, "arch/um/include/uml-config.h") &&
                    strrcmp(s, ".ver")) {
                        printf("  %s \\\n", s);
                        do_config_file(s);