Macro definitions
A macro definition is an identifier followed by the symbol ``=''.
The identifier must not be preceded by a colon
(``:'')
or a tab.
The name (string of letters and digits) to the left of the
=
(trailing blanks and tabs are stripped) is assigned the string of characters
following the
=
(leading blanks and tabs are stripped).
The following are valid macro definitions:
2 = xyz
abc = -ll -ly -lm
LIBES =
The last definition assigns
LIBES
the null string.
A macro that is never explicitly defined has the null
string as its value.
Remember, however, that some macros are explicitly defined in make's
own rules.
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SCO OpenServer Release 6.0.0 -- 02 June 2005