added never_empty hint on WX_DIR option
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49942 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@ -245,7 +245,7 @@
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<!-- The directory where wxWidgets is installed: -->
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<if cond="not isdefined('WX_DIR')">
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<set var="WX_DIR_DEFAULT" overwrite="0">$(DOLLAR)($(ENV_VAR)WXWIN)</set>
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<option name="WX_DIR" category="path">
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<option name="WX_DIR" category="path" never_empty="1">
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<default-value>$(WX_DIR_DEFAULT)</default-value>
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<description>
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The directory where wxWidgets library is installed
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