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UNIFY_ENVVARS_AND_CACHE - check if var is defined to fix some warnings
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@@ -19,7 +19,7 @@
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# Create a cache entry if absent for environment variables
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macro(UNIFY_ENVVARS_AND_CACHE VAR)
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if((NOT DEFINED ${VAR}) AND(NOT "$ENV{${VAR}}" STREQUAL ""))
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if(NOT DEFINED ${VAR} AND DEFINED ENV{${VAR}} AND NOT ENV{${VAR}} STREQUAL "")
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set(${VAR} "$ENV{${VAR}}" CACHE STRING "${VAR}" FORCE)
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endif()
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endmacro()
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