clockspeed: improved to only build and install man pages if groff package is available

network/clockspeed/clockspeed.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../clockspeed/clockspeed.conf
-# Copyright (C) 2008 The OpenSDE Project
+# Copyright (C) 2008 - 2010 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 #
 # More information can be found in the files COPYING and README.
@@ -13,7 +13,7 @@
 # GNU General Public License can be found in the file COPYING.
 # --- SDE-COPYRIGHT-NOTE-END ---
 
-makeopt="$makeopt it leapsecs.dat"
+makeopt="$makeopt sntpclock taiclock taiclockd clockspeed clockadd clockview leapsecs.dat"
 
 clockspeed_config() {
 	echo $CC > conf-cc
@@ -32,7 +32,7 @@ clockspeed_install() {
 		[[ $arch != x86* ]] && [[ $file = clockspeed* ]] && continue
 		mkdir -p $root/$prefix/$dir
 		cp $file $root/$prefix/$dir/$file
-	done < <( grep "c(.*man\|c(.*bin" hier.c | cut -d'"' --output-delimiter ' '  -f 2,4 )
+	done < <( grep "$installfiles" hier.c | cut -d'"' --output-delimiter ' '  -f 2,4 )
 
 	# install leapsecs.dat
 	mkdir -p $root/var/state/clockspeed
@@ -51,3 +51,11 @@ hook_add premake 5 'clockspeed_config'
 hook_add postmake 5 "clockspeed_install"
 
 hook_add preconf 5 "cp -v $( match_source_file -p leapsecs ) leapsecs.dat"
+
+# by default install binaries only
+installfiles="c(.*bin"
+# only build and install man pages if groff package is available
+if pkginstalled groff; then
+	var_append makeopt ' ' "man"
+	var_append installfiles "\|" "c(.*man"
+fi