[CMake] help with variable usage in target_link_libraries

[Eric Noulard]

2009/8/31 Eike Kroemer <eike-michael.kroemer at atlas-elektronik.com>:
> Hi there,
>
> using cmake-2.6.4-Linux-i386, I'd like to use
>
>  set(LIBS lib1)
>  set(LIBS "$LIBS lib2")
>  [...]
>  set(LIBS "$LIBS libN")
>
>  target_link_libraries(target $LIBS)
>
> instead of writing explicitely
>
>  target_link_libraries(target lib1 lib2 [...] libN)
>
> but while cmake gives no error messages, the library dependencies are
> not honored during link.
> I tried to vary the usage of '"'s but to no avail.
>
> How to do it correctly?

Variable values shoud be retrieve with curly brace, i.e.

$LIBS --> ${LIBS}

Then when you have a list of something you usually use LIST(APPEND

LIST(APPEND LIBS "libN")

even if

SET(LIBS "${LIBS} libN") should work as well.


-- 
Erk
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