Index: Makefile
===================================================================
--- Makefile
+++ Makefile
@@ -12,11 +12,18 @@
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-BUILD_DEPENDS=	ronn:textproc/rubygem-ronn
 LIB_DEPENDS=	libunistring.so:devel/libunistring
 
+OPTIONS_DEFINE=	MANPAGES
+OPTIONS_DEFAULT=MANPAGES
+OPTIONS_SUB=	yes
+MANPAGES_BUILD_DEPENDS=	ronn:textproc/rubygem-ronn
+
 CONFIGURE_ARGS=	--disable-nls \
 		--with-libunistring-prefix=${LOCALBASE}
+
+MANPAGES_CONFIGURE_ENABLE=	doc
+
 GNU_CONFIGURE=	yes
 INSTALL_TARGET=	install-strip
 USE_LDCONFIG=	yes
Index: pkg-plist
===================================================================
--- pkg-plist
+++ pkg-plist
@@ -5,35 +5,35 @@
 lib/libidn2.so.0
 lib/libidn2.so.0.3.2
 libdata/pkgconfig/libidn2.pc
-man/man1/idn2.1.gz
-man/man3/idn2_check_version.3.gz
-man/man3/idn2_free.3.gz
-man/man3/idn2_lookup_u8.3.gz
-man/man3/idn2_lookup_ul.3.gz
-man/man3/idn2_register_u8.3.gz
-man/man3/idn2_register_ul.3.gz
-man/man3/idn2_strerror.3.gz
-man/man3/idn2_strerror_name.3.gz
-man/man3/idn2_to_ascii_4i.3.gz
-man/man3/idn2_to_ascii_4z.3.gz
-man/man3/idn2_to_ascii_8z.3.gz
-man/man3/idn2_to_ascii_lz.3.gz
-man/man3/idn2_to_unicode_44i.3.gz
-man/man3/idn2_to_unicode_4z4z.3.gz
-man/man3/idn2_to_unicode_8z4z.3.gz
-man/man3/idn2_to_unicode_8z8z.3.gz
-man/man3/idn2_to_unicode_8zlz.3.gz
-man/man3/idn2_to_unicode_lzlz.3.gz
-share/gtk-doc/html/libidn2/api-index-full.html
-share/gtk-doc/html/libidn2/home.png
-share/gtk-doc/html/libidn2/index.html
-share/gtk-doc/html/libidn2/left-insensitive.png
-share/gtk-doc/html/libidn2/left.png
-share/gtk-doc/html/libidn2/libidn2-idn2.html
-share/gtk-doc/html/libidn2/libidn2.devhelp2
-share/gtk-doc/html/libidn2/libidn2.html
-share/gtk-doc/html/libidn2/right-insensitive.png
-share/gtk-doc/html/libidn2/right.png
-share/gtk-doc/html/libidn2/style.css
-share/gtk-doc/html/libidn2/up-insensitive.png
-share/gtk-doc/html/libidn2/up.png
+%%MANPAGES%%man/man1/idn2.1.gz
+%%MANPAGES%%man/man3/idn2_check_version.3.gz
+%%MANPAGES%%man/man3/idn2_free.3.gz
+%%MANPAGES%%man/man3/idn2_lookup_u8.3.gz
+%%MANPAGES%%man/man3/idn2_lookup_ul.3.gz
+%%MANPAGES%%man/man3/idn2_register_u8.3.gz
+%%MANPAGES%%man/man3/idn2_register_ul.3.gz
+%%MANPAGES%%man/man3/idn2_strerror.3.gz
+%%MANPAGES%%man/man3/idn2_strerror_name.3.gz
+%%MANPAGES%%man/man3/idn2_to_ascii_4i.3.gz
+%%MANPAGES%%man/man3/idn2_to_ascii_4z.3.gz
+%%MANPAGES%%man/man3/idn2_to_ascii_8z.3.gz
+%%MANPAGES%%man/man3/idn2_to_ascii_lz.3.gz
+%%MANPAGES%%man/man3/idn2_to_unicode_44i.3.gz
+%%MANPAGES%%man/man3/idn2_to_unicode_4z4z.3.gz
+%%MANPAGES%%man/man3/idn2_to_unicode_8z4z.3.gz
+%%MANPAGES%%man/man3/idn2_to_unicode_8z8z.3.gz
+%%MANPAGES%%man/man3/idn2_to_unicode_8zlz.3.gz
+%%MANPAGES%%man/man3/idn2_to_unicode_lzlz.3.gz
+%%MANPAGES%%share/gtk-doc/html/libidn2/api-index-full.html
+%%MANPAGES%%share/gtk-doc/html/libidn2/home.png
+%%MANPAGES%%share/gtk-doc/html/libidn2/index.html
+%%MANPAGES%%share/gtk-doc/html/libidn2/left-insensitive.png
+%%MANPAGES%%share/gtk-doc/html/libidn2/left.png
+%%MANPAGES%%share/gtk-doc/html/libidn2/libidn2-idn2.html
+%%MANPAGES%%share/gtk-doc/html/libidn2/libidn2.devhelp2
+%%MANPAGES%%share/gtk-doc/html/libidn2/libidn2.html
+%%MANPAGES%%share/gtk-doc/html/libidn2/right-insensitive.png
+%%MANPAGES%%share/gtk-doc/html/libidn2/right.png
+%%MANPAGES%%share/gtk-doc/html/libidn2/style.css
+%%MANPAGES%%share/gtk-doc/html/libidn2/up-insensitive.png
+%%MANPAGES%%share/gtk-doc/html/libidn2/up.png