Hey List -
Just wanted to put this out there for posterity, and in case anyone runs
into the same question I had. I had a bunch of nearly identical
functions, so I wanted to write a function to define them for me to
reduce code repetition. The problem I ran into was that if you write
macro(_define_function name)
function(namespaced_${function_name} ...)
message(${ARGV} from ${name})
endfunction()
endmacro()
_define_function(foo)
namespaced_foo("Message")
you actually wind up printing "foo from foo", since all variable
references to a macro are expanded first. I also couldn't use a
function, since there would be no way to access ${name} from inside the
function (that I'm aware of - please correct me on this if I'm wrong)
The solution I came up with was, if I wanted to reference the function's
argv, I would do a double-dereference of a string containing "ARGV" like so:
macro(_define_function name)
function(namespaced_${function_name} ...)
set(my_argv ARGV)
message(${${my_argv}} from ${name})
endfunction()
endmacro()
This produced the correct results. If any of you know of a cleaner way
to do this, I'd love to hear about it. If not, have fun writing
functions to write your functions!
As a relatively useless, but I thought entertaining aside:
macro(_define_function name my_argv)
function(namespaced_${function_name} ...)
message(${my_argv} from ${name})
endfunction()
endmacro()
_define_function(foo "\${ARGV}")
namespaced_foo("Message")
The result is "foo Message from foo" because ${my_argv} gets expand to
${ARGV}, which then expands to "foo ${ARGV}".
Thanks!
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