Package: gtk-doc-tools

"gtk-doc-tools" package binaries on Debian:

/usr/bin/gtkdoc-check /usr/bin/gtkdoc-depscan /usr/bin/gtkdoc-fixxref /usr/bin/gtkdocize /usr/bin/gtkdoc-mkdb /usr/bin/gtkdoc-mkhtml /usr/bin/gtkdoc-mkman /usr/bin/gtkdoc-mkpdf /usr/bin/gtkdoc-mktmpl /usr/bin/gtkdoc-rebase /usr/bin/gtkdoc-scan /usr/bin/gtkdoc-scangobj

You may install this package on Debian with apt-get install gtk-doc-tools