This is a follow-up question to How to get Wikipedia W from Linux Libertine?
How can \libertineGlyph{W.alt} set with pdflatex? This MWE works fine
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{libertine}
\begin{document}
\libertineGlyph{W.alt}ikipedia
\end{document}
with XeTeX and LuaTeX as well, but with pdfLaTeX the command is not available:
! Undefined control sequence.
l.5 \libertineGlyph
{W.alt}ikipedia