#ifdef reduction infrastructure, based on an argument between Shaun Jackman,

Rob Landley, and others.

Currently CONFIG options are defined or undefined, so we chop out code with
#ifdefs, ala:
#ifdef CONFIG_THING
  stuff();
#endif

This creates a new header file, bb_config.h, which sets the CONFIG entry to 1
or 0, and lets us do:

  if(CONFIG_THING) stuff();

And let the compiler do dead code elimination to get rid of it.  (Note: #ifdef
will still work because for the 1 case it's a static const int, not a #define.)



git-svn-id: svn://busybox.net/trunk/busybox@10929 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 2 insertions, 0 deletions

diff --git a/networking/ifconfig.c b/networking/ifconfig.c
index fc7798f2d..1b43a0825 100644
--- a/networking/ifconfig.c
+++ b/networking/ifconfig.c
@@ -37,6 +37,7 @@
 #include <string.h>             /* strcmp and friends */
 #include <ctype.h>              /* isdigit and friends */
 #include <stddef.h>             /* offsetof */
+#include <unistd.h>
 #include <netdb.h>
 #include <sys/ioctl.h>
 #include <net/if.h>
@@ -558,6 +559,7 @@ int ifconfig_main(int argc, char **argv)
                 continue;
         }                                       /* end of while-loop */
 
+        if (CONFIG_FEATURE_CLEAN_UP) close(sockfd);
         return goterr;
 }