Zachary Pincus wrote:
I'm having some strange issues using the ARGVn variables in macros.
Specifically, even when one of those variables has a value, they seem
to fail IF tests (and similar).
Perhaps this is best illustrated with an example:
#----------
MACRO(foo)
IF(ARGV0)
MESSAGE("ONE ARGUMENT")
ELSE(ARGV0)
MESSAGE("NO ARGUMENTS")
ENDIF(ARGV0)
ENDMACRO(foo)
The ARGV* variables in macros are handled differently from other
variables. When the macro is invoked "${ARGV0}" is replaced by the
argument passed to the macro. The resulting macro body is then
executed. Try this:
MACRO(foo)
IF("${ARGV0}")
MESSAGE("ONE ARGUMENT")
ELSE("${ARGV0}")
MESSAGE("NO ARGUMENTS")
ENDIF("${ARGV0}")
ENDMACRO(foo)
-Brad
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