Compiling 4.1.0 on Mac OS 10.6: "format not a literal string..."

Tina Siegenthaler tina at
Wed Nov 25 15:46:00 UTC 2009

Hi list

Today, when compiled dhcpd 4.1.0 on Mac OS 10.6. I came across the  
following error when runnig make (several times, actually):

warning: format not a string literal and no format arguments

The error occurred for the files print.c, dhclient.c, dhcrelay.c,  
dhcpd.c. After some googling I found out that I had to insert "%s"  
into several lines that called the function "log_info" (sorry if I'm  
using the wrong expressions, I'm absolutely not a programmer), that  
is , I had to change for example each occurence of

log_info (copyright)
log_info ("%s", copyright)

then it would compile fine.

I then tried to compile version 4.1.0 on Mac OS 10.5, and there it  
would do so without modifications and without errors. What has changed  
between Mac OS 10.5 and 10.6 is the version of gcc: It's gcc 4.0.1 on  
10.5 and gcc 4.2.1 on 10.6, so I suspect that this is the cause for  
this error? If it is, maybe it would be possible to include these  
modifications in future releases, since the "patched" version compiled  
fine also with gcc 4.0.1?

Sorry if that's already known to everybody but me, but I thought I'd  
share that and didn't find anything about it in the archives.


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