-MAN8_TXT += btrfs-subvolume.txt
-MAN8_TXT += btrfs-filesystem.txt
-MAN8_TXT += btrfs-balance.txt
-MAN8_TXT += btrfs-device.txt
-MAN8_TXT += btrfs-scrub.txt
-MAN8_TXT += btrfs-check.txt
-MAN8_TXT += btrfs-rescue.txt
-MAN8_TXT += btrfs-inspect-internal.txt
-MAN8_TXT += btrfs-send.txt
-MAN8_TXT += btrfs-receive.txt
-MAN8_TXT += btrfs-quota.txt
-MAN8_TXT += btrfs-qgroup.txt
-MAN8_TXT += btrfs-replace.txt
-MAN8_TXT += btrfs-restore.txt
-MAN8_TXT += btrfs-property.txt
-
-# Mount manpage
-MAN5_TXT += btrfs-mount.txt
-
-MAN_TXT = $(MAN8_TXT) $(MAN5_TXT)
-MAN_XML = $(patsubst %.txt,%.xml,$(MAN_TXT))
-
-DOC_MAN5 = $(patsubst %.txt,%.5,$(MAN5_TXT))
-GZ_MAN5 = $(patsubst %.txt,%.5.gz,$(MAN5_TXT))
-
-DOC_MAN8 = $(patsubst %.txt,%.8,$(MAN8_TXT))
-GZ_MAN8 = $(patsubst %.txt,%.8.gz,$(MAN8_TXT))
+MAN8_TXT += btrfs-subvolume.asciidoc
+MAN8_TXT += btrfs-filesystem.asciidoc
+MAN8_TXT += btrfs-balance.asciidoc
+MAN8_TXT += btrfs-device.asciidoc
+MAN8_TXT += btrfs-scrub.asciidoc
+MAN8_TXT += btrfs-check.asciidoc
+MAN8_TXT += btrfs-rescue.asciidoc
+MAN8_TXT += btrfs-inspect-internal.asciidoc
+MAN8_TXT += btrfs-send.asciidoc
+MAN8_TXT += btrfs-receive.asciidoc
+MAN8_TXT += btrfs-quota.asciidoc
+MAN8_TXT += btrfs-qgroup.asciidoc
+MAN8_TXT += btrfs-replace.asciidoc
+MAN8_TXT += btrfs-restore.asciidoc
+MAN8_TXT += btrfs-property.asciidoc
+
+# Category 5 manual page
+MAN5_TXT += btrfs-man5.asciidoc
+
+MAN3_TXT += btrfs-ioctl.asciidoc
+
+MAN_TXT = $(MAN3_TXT) $(MAN8_TXT) $(MAN5_TXT)
+MAN_XML = $(patsubst %.asciidoc,%.xml,$(MAN_TXT))
+MAN_HTML = $(patsubst %.asciidoc,%.html,$(MAN_TXT))
+GZ_MAN3 = $(patsubst %.asciidoc,%.3.gz,$(MAN3_TXT))
+GZ_MAN5 = $(patsubst %.asciidoc,%.5.gz,$(MAN5_TXT))
+GZ_MAN8 = $(patsubst %.asciidoc,%.8.gz,$(MAN8_TXT))