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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hey guys,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We have an ever growing build that uses CMake cache variables to communicate things like include_dirs and library target names between dependent modules. Basically, we do what the <project_name>_SOURCE_DIR type of thing does but without have projects for every target. However, a developer may use a module’s variable without realizing its CMake script hasn’t run yet which means the cache variables are uninitialized and therefore empty.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If we emit CMake warnings for uninitialized variables, there are a slew of other uninitialized variable warnings, which do not impact the build.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So the question is, how do folks generally protect against the accidental use of uninitialized variables in CMake scripts?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-Matt<o:p></o:p></p></div>
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