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The freetype library uses macros for its include files (to get around short filename constraints and have more descriptive headers). I don't know if other libraries do this, but NetBeans just claims that it 'Cannot find include file ""' For example, I have this: #include <ft2build.h> #include FT_FREETYPE_H And while it references the ft2build.h file, which defines all the header macros, NetBeans cannot find the second include file, even though through the preprocessor the compiler can. This breaks essential codecompletion features when using these libraries without changing the includes back to their traditional names.
you need to add '/usr/include/freetype2' path into 'Include Directories' text field in 'Project Properties' window. In this case IDE can to recognise '#include FT_FREETYPE_H' line
Issue is caused by project misconfiguration. Closing as invalid.