Re: asm-offsets.h is generated in the source tree

[Kyle Moffett]

On Mon, Sep 12, 2005 at 09:15:25PM +0200, Sam Ravnborg wrote:
> o Use some magic define trick like:
>   - #include "ARCHDIR##foo.h"
>   - I cannot recall correct syntax but something like this is doable

The syntax for that is one of the following:

# define STR(x) #x
# define XSTR(x) STR(x)

# define SOME_ARCH_DIR foo/bar
# define STRING_INCLUDE(path) XSTR(SOME_ARCH_DIR/path)
# define ANGLE_INCLUDE(path) <SOME_ARCH_DIR/path>

Then:
# include STRING_INCLUDE(baz.h)    ==>    # include "foo/bar/baz.h"
# include ANGLE_INCLUDE(baz.h)     ==>    # include <foo/bar/baz.h>

I'm not sure what GCC version these were first supported in, but I
would try to stay away from them as a matter of principle.  They're
ugly and quite hard to read/understand.  If there were no other way,
I might use those, but since there probably is...  I dunno about
you, but those are some really icky constructions.

Cheers,
Kyle Moffett

--
Premature optimization is the root of all evil in programming
  -- C.A.R. Hoare



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