diff --git a/Makefile b/Makefile
index 56f10154..03088c19 100644
--- a/Makefile
+++ b/Makefile
@@ -99,7 +99,7 @@ endef
 #######################################################################
 .PHONY: all
 # set LANGPO to limit language to speed up build
-all: css html txt epub 
+all: css html txt epub pdf
 
 #######################################################################
 # $ make test      # build html for testing (for Translator)
diff --git a/debian/all.install-in b/debian/all.install-in
index c33b536b..64f7af2c 100644
--- a/debian/all.install-in
+++ b/debian/all.install-in
@@ -1,3 +1,4 @@
 tmp/debian-reference.@@.txt.gz usr/share/debian-reference/
 tmp/debian-reference.@@.epub usr/share/debian-reference/
+tmp/debian-reference.@@.pdf usr/share/debian-reference/
 tmp/*.@@.html usr/share/debian-reference/
diff --git a/debian/rules b/debian/rules
index fe4e87c0..7f1e8566 100755
--- a/debian/rules
+++ b/debian/rules
@@ -55,6 +55,10 @@ override_dh_auto_build:
 	done
 	dh_auto_build $(BUILDOPT) -- "LANGALL=$(LANGALL)" "LANGPO=$(LANGPO)" all
 
+
+override_dh_compress:
+	dh_compress -X.pdf
+
 override_dh_auto_test:
 	: # no need to test build html pages
 
diff --git a/po/zh-cn.tex b/po/zh-cn.tex
new file mode 100644
index 00000000..676604be
--- /dev/null
+++ b/po/zh-cn.tex
@@ -0,0 +1 @@
+\hyphenation{}
diff --git a/po/zh-tw.tex b/po/zh-tw.tex
new file mode 100644
index 00000000..676604be
--- /dev/null
+++ b/po/zh-tw.tex
@@ -0,0 +1 @@
+\hyphenation{}