Hello,
I am having trouble with a conditional generator expression inside target link
libraries, which seems to expand incorrectly (or at least not the way I expect).
In short, I have a list of libraries that is found by a CMake module. The list
is composed of a number of elements each preceded by "optimized" or "debug",
depending on if there are built for release or debug. These libraries should
only be included if a boolean is set to true. I have tried to write a generator
expression which only includes the list of libraries if this variable is set.
But it seems that this expression gets expanded wrong.
If I try to condense the problem to a minimum example, it would be something
like this:
LIST(APPEND MYLIB_LIBRARIES optimized foo)
LIST(APPEND MYLIB_LIBRARIES debug foo_d)
TARGET_LINK_LIBRARIES(target_name
PUBLIC
$<$<BOOL:TRUE>:${MYLIB_LIBRARIES}>
)
This generator expression makes my target depend of the following libraries for
the release build:
foo.lib & optimized.lib
And for the debug build:
foo_d.lib, foo.lib & optimized.lib
Which is obviously incorrect.
Replacing the generator expression with an IF-statement instead works. But I
would like to stick to generator expressions if possible to keep my CMake code
consistent.
How should I rewrite my generator expression to get the correct expansion?
Regards,
Björn
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