/usr/include/GNUstep/ is in libpopplerkit-dev 0.0.20051227svn-7.1+b4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/GNUstep/Frameworks/
/usr/include/GNUstep/Frameworks/PopplerKit.framework/
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Headers
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerCachingRenderer.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerCairoImageRenderer.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerDirectBufferedRenderer.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerDocument+Rendering.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerDocument.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerFontManager.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerKit.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerPage.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerRenderer.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerSplashRenderer.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerTextHit.h
/usr/include/GNUstep/Frameworks/PopplerKit.framework/Versions/1.0/PopplerTextSearch.h
/usr/include/GNUstep/PopplerKit