[kupfer] wscript(s): Check for rst2man and build man page if available

[Ulrik Sverdrup <usverdrup src gnome org>]

commit 63c7416865daaccd41b10d80b5377aabc644cc0d
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Thu Sep 17 20:44:17 2009 +0200

    wscript(s): Check for rst2man and build man page if available

 data/wscript_build |   22 +++++++++++++++-------
 wscript            |    4 ++--
 2 files changed, 17 insertions(+), 9 deletions(-)
---
diff --git a/data/wscript_build b/data/wscript_build
index 3f0a832..9dfc740 100644
--- a/data/wscript_build
+++ b/data/wscript_build
@@ -6,13 +6,21 @@ bld.install_files("${DATADIR}/kupfer", "preferences.ui")
 bld.install_files("${DATADIR}/kupfer/art", "art/*")
 bld.install_files("${DATADIR}/kupfer/searchplugins", "searchplugins/*")
 
-# compress and install man page
-bld.new_task_gen(
-	source = "kupfer.1",
-	target = "kupfer.1.gz",
-	rule = 'gzip -c ${SRC} > ${TGT}',
-	install_path = "${MANDIR}/man1",
-)
+if bld.env["RST2MAN"]:
+	# generate man page
+	bld.new_task_gen(
+		source = "kupfer.1.rst",
+		target = "kupfer.1",
+		rule = 'rst2man ${SRC} > ${TGT}',
+	)
+	bld.add_group()
+	# compress and install man page
+	bld.new_task_gen(
+		source = "kupfer.1",
+		target = "kupfer.1.gz",
+		rule = 'gzip -c ${SRC} > ${TGT}',
+		install_path = "${MANDIR}/man1",
+	)
 
 # subst executable location into and
 desktop_file = "kupfer.desktop.in"
diff --git a/wscript b/wscript
index c09a4ba..05638df 100644
--- a/wscript
+++ b/wscript
@@ -96,10 +96,10 @@ def configure(conf):
 
 	Utils.pprint("NORMAL", "Checking optional dependencies:")
 
-	opt_programs = ["dbus-send"]
+	opt_programs = "dbus-send rst2man".split()
 	opt_pymodules = "wnck gnome.ui".split()
 	for prog in opt_programs:
-		prog_path = conf.find_program(prog)
+		prog_path = conf.find_program(prog, var=prog.replace("-", "_").upper())
 
 	try:
 		conf.check_python_module("keybinder")