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| -rw-r--r-- | Porting/pumpkin.pod | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/Porting/pumpkin.pod b/Porting/pumpkin.pod index 0d80fb8725..fb5c2d7a8e 100644 --- a/Porting/pumpkin.pod +++ b/Porting/pumpkin.pod @@ -797,38 +797,6 @@ they must be fixed eventually.) =over 4 -=item #elif - -The '#elif' preprocessor directive is not understood on all systems. -Specifically, I know that Pyramids don't understand it. Thus instead of the -simple - - #if defined(I_FOO) - # include <foo.h> - #elif defined(I_BAR) - # include <bar.h> - #else - # include <fubar.h> - #endif - -You have to do the more Byzantine - - #if defined(I_FOO) - # include <foo.h> - #else - # if defined(I_BAR) - # include <bar.h> - # else - # include <fubar.h> - # endif - #endif - -Incidentally, whitespace between the leading '#' and the preprocessor -command is not guaranteed, but is very portable and you may use it freely. -I think it makes things a bit more readable, especially once things get -rather deeply nested. I also think that things should almost never get -too deeply nested, so it ought to be a moot point :-) - =item Probably Prefer POSIX It's often the case that you'll need to choose whether to do |