Unix Programming - "defined(BLAH)" in makefile?

You are viewing an archived Text-only version of the thread. To view this thread in it's original format and/or if you want to reply to this thread please [click here]

Author

"defined(BLAH)" in makefile?

Fred Ma

2004-10-21, 3:58 am

I have a question about the defined function in a makefile.
It arises from a solaris-specific situation, but I'm not sure
if the question itself is solaris specific. I was trying to
figure out why C's "long" has the same value limits as "int".
I ran in to this solaris-specific example at
http://docsun.cites.uiuc.edu/sun_do...TRANS/p16.html:

#if defined(_LP64)
typedef ulong_t size_t; /* size of something in bytes */
#else
typedef uint_t size_t; /* (historical version) */
#endif

The key thing here being defined(_LP64). I can't find the defined
function in the make man pages for solaris, nor the gnu man pages
for make. Where should I be looking for it?

TIA,

Fred

Sponsored Links