On Fri, Aug 13, 2010 at 11:19 AM, Brian Gerkey <
gerkey@willowgarage.com> wrote:
> To test Josh's hypothesis, you can try compiling with '-U Status', to
> undefine any previous definition of that symbol.
>
> E.g., if you're building an executable called 'bookboot', you could
> add this line to your CMakeLists.txt:
>
> rosbuild_add_compile_flags(bookboot -U Status)
>
> If that works (with your message still called 'Status'), then you'd
> want to track down the #define of 'Status'.
As Josh pointed out, the above test won't actually work, because the
command-line -D and -U options are processed before the source files.
Instead, you can try *defining* Status on the command line to
something unusual, then look for a compiler warning about
redefinition. E.g.:
rosbuild_add_compile_flags(bookboot -DStatus=42)
You should then see a warning from the compiler something like this:
foo.c:1:1: warning: "Status" redefined
<command-line>: warning: this is the location of the previous definition
The file and line information will indicate where to look for the
#define that's causing trouble.
brian.
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