diff --git a/Makefile.am b/Makefile.am
index 58971db0..1ddbdd81 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -27,6 +27,37 @@ EXTRA_DIST = \
 
 ACLOCAL_AMFLAGS = -I m4
 
+# List of man pages to conver to PDF and plain text in the dist-hook target.
+manfiles = \
+	src/xzdec/xzdec.1 \
+	src/scripts/xzdiff.1 \
+	src/scripts/xzgrep.1 \
+	src/scripts/xzless.1 \
+	src/scripts/xzmore.1
+
+# Create ChangeLog from output of "git log --date=iso --stat".
+# Convert the man pages to PDF and plain text (ASCII only) formats.
+dist-hook:
+	test -d "$(srcdir)/.git" && type git > /dev/null 2>&1 \
+		&& ( cd "$(srcdir)" && git log --date=iso --stat ) \
+			> "$(distdir)/ChangeLog"
+	if type groff > /dev/null 2>&1 && type ps2pdf > /dev/null 2>&1; then \
+		dest="$(distdir)/doc/man" && \
+		mkdir "$$dest" && \
+		mkdir "$$dest/pdf-a4" "$$dest/pdf-letter" "$$dest/txt" && \
+		for FILE in $(manfiles); do \
+			BASE=`basename $$FILE .1` && \
+			groff -man -t -Tps -P-pa4 < "$(srcdir)/$$FILE" \
+				| ps2pdf - - \
+				> "$$dest/pdf-a4/$$BASE-a4.pdf" && \
+			groff -man -t -Tps -P-pletter < "$(srcdir)/$$FILE" \
+				| ps2pdf - - \
+				> "$$dest/pdf-letter/$$BASE-letter.pdf" && \
+			groff -man -t -Tascii < "$(srcdir)/$$FILE" \
+				| col -bx > "$$dest/txt/$$BASE.txt"; \
+		done; \
+	fi
+
 # This works with GNU tar and gives cleaner package than normal 'make dist'.
 mydist:
 	TAR_OPTIONS='--owner=0 --group=0 --numeric-owner --mode=u+rw,go+r-w' \