Re: sys/cdrom.h fails to compile cleanly with -ansi (Was: present but cannot be compiled)

[Akim Demaille]

No private messages for public matters please.

 > On Wednesday 05 November 2003 10:40 am, you wrote:
 >> For instance, if the error message is:
 >> 
 >> sys/socket.h: present but cannot be compiled
 >> sys/socket.h: check for missing prerequisite headers?
 >> sys/socket.h: proceeding with the preprocessor's result
 >> 
 >> then try to compile the program sample.c:
 >> 
 >> #include <sys/socket.h>
 >> 
 >> with `cc -c sample.c'.  It will fail.

 > Nope. It succeeds. As I said in my previous email, the reason for
 > the failure of the autoconf check (and subsequent failure of the
 > build) is that -ansi is present in the CFLAGS. This isn't a
 > prerequisite headers issue, unless there's some header that can
 > turn back on gcc's groking of __u32 &c.

 > For reference, the header in question is <linux/cdrom.h>, on a
 > Linux 2.4.20 system.

Arg, thanks.

But then, I think the expected result is indeed to reject this header,
since it is not compilable.  In the near future the compiler's choice
will dominate that of the preprocessor.