[PATCH -perfbook 2/7] Prevent warning of duplicate page identifier in Ebook-size builds

In Ebook-size builds, pdfTeX complains:

    pdfTeX warning (ext4): destination with the same identifier
    (name{page.i}) has been already used, duplicate ignored

As a workaround, disable pageanchor of hyperef for titlepage in
Ebook-size builds.

Signed-off-by: Akira Yokosawa <[email protected]>
---
 perfbook-lt.tex | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/perfbook-lt.tex b/perfbook-lt.tex
index af60f6f2388f..4c8870a135d9 100644
--- a/perfbook-lt.tex
+++ b/perfbook-lt.tex
@@ -641,7 +641,10 @@
 
 \frontmatter
 
+\IfEbookSize{\hypersetup{pageanchor=false}}{}
 \maketitle
+\IfEbookSize{\hypersetup{pageanchor=true}}{}
+
 \IfTwoColumn{
   \onecolumn\begin{adjustwidth*}{.95in}{.8in}
   \addtolength{\parindent}{6pt}
-- 
2.25.1