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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">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).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">If I try to condense the problem to a minimum example, it would be something like this:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">LIST(APPEND MYLIB_LIBRARIES optimized foo)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">LIST(APPEND MYLIB_LIBRARIES debug foo_d)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">TARGET_LINK_LIBRARIES(target_name<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> PUBLIC <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> $<$<BOOL:TRUE>:${MYLIB_LIBRARIES}><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This generator expression makes my target depend of the following libraries for the release build:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">foo.lib & optimized.lib<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">And for the debug build:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">foo_d.lib, foo.lib & optimized.lib<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Which is obviously incorrect. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">How should I rewrite my generator expression to get the correct expansion?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:SV">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:SV">Björn<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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