cmake: CMAKE_*_PATH can be undefined
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@ -128,22 +128,22 @@ makeCmakeFindLibs(){
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for flag in $NIX_CFLAGS_COMPILE $NIX_LDFLAGS; do
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if test -n "$isystem_seen" && test -d "$flag"; then
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isystem_seen=
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export CMAKE_INCLUDE_PATH="$CMAKE_INCLUDE_PATH${CMAKE_INCLUDE_PATH:+:}${flag}"
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export CMAKE_INCLUDE_PATH="${CMAKE_INCLUDE_PATH-}${CMAKE_INCLUDE_PATH:+:}${flag}"
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elif test -n "$iframework_seen" && test -d "$flag"; then
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iframework_seen=
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export CMAKE_FRAMEWORK_PATH="$CMAKE_FRAMEWORK_PATH${CMAKE_FRAMEWORK_PATH:+:}${flag}"
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export CMAKE_FRAMEWORK_PATH="${CMAKE_FRAMEWORK_PATH-}${CMAKE_FRAMEWORK_PATH:+:}${flag}"
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else
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isystem_seen=
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iframework_seen=
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case $flag in
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-I*)
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export CMAKE_INCLUDE_PATH="$CMAKE_INCLUDE_PATH${CMAKE_INCLUDE_PATH:+:}${flag:2}"
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export CMAKE_INCLUDE_PATH="${CMAKE_INCLUDE_PATH-}${CMAKE_INCLUDE_PATH:+:}${flag:2}"
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;;
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-L*)
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export CMAKE_LIBRARY_PATH="$CMAKE_LIBRARY_PATH${CMAKE_LIBRARY_PATH:+:}${flag:2}"
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export CMAKE_LIBRARY_PATH="${CMAKE_LIBRARY_PATH-}${CMAKE_LIBRARY_PATH:+:}${flag:2}"
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;;
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-F*)
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export CMAKE_FRAMEWORK_PATH="$CMAKE_FRAMEWORK_PATH${CMAKE_FRAMEWORK_PATH:+:}${flag:2}"
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export CMAKE_FRAMEWORK_PATH="${CMAKE_FRAMEWORK_PATH-}${CMAKE_FRAMEWORK_PATH:+:}${flag:2}"
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;;
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-isystem)
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isystem_seen=1
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