Enhance the display of parallel configuration tests

ChangeLog

@@ -1,3 +1,10 @@
+NEW IN WAF 1.9.3
+----------------
+* Enable configuration task class lookup in conf.multicheck
+* Enable individual output lines in conf.multicheck
+* Updated examples for stripping executables
+* More documentation
+
 NEW IN WAF 1.9.2
 ----------------
 * Fix a Python 3 encoding error when displaying the file hash in 'waf dist' #1769

demos/c/wscript

@@ -36,10 +36,10 @@ def configure(conf):
 	conf.check_endianness()
 
 	conf.multicheck(
-		{'header_name':'stdio.h'},
-		{'header_name':'unistd.h'},
-		{'header_name':'stdlib.h'},
-		msg       = 'Checking for standard headers',
+		{'header_name':'stdio.h', 'msg':'... stdio'},
+		{'header_name':'unistd.h', 'msg':'... unistd'},
+		{'header_name':'stdlib.h', 'msg':'... stdlib', 'okmsg': 'aye', 'errmsg': 'nope'},
+		msg       = 'Checking for headers in parallel',
 		mandatory = False
 	)
 	conf.check_cc(header_name='stdio.h', auto_add_header_name=True)

waflib/Tools/c_config.py

@@ -1318,10 +1318,23 @@ def multicheck(self, *k, **kw):
 				self.end_msg('fail', color='RED')
 				raise Errors.WafError('There is an error in the library, read config.log for more information')
 
+	for x in tasks:
+		if x.hasrun != Task.SUCCESS:
+			self.end_msg(kw.get('errmsg', 'no'), color='YELLOW', **kw)
+			break
+	else:
+		self.end_msg('ok', **kw)
+
+	# optional output lines on msg/okmsg/errmsg
+	for x in tasks:
+		if 'msg' in x.args:
+			self.start_msg(x.args['msg'])
+			if x.hasrun != Task.SUCCESS:
+				self.end_msg(x.args.get('errmsg', 'no'), 'YELLOW')
+			else:
+				self.end_msg(x.args.get('okmsg', 'yes'), 'GREEN')
 	for x in tasks:
 		if x.hasrun != Task.SUCCESS:
 			self.end_msg(kw.get('errmsg', 'no'), color='YELLOW', **kw)
 			self.fatal(kw.get('fatalmsg') or 'One of the tests has failed, read config.log for more information')
 
-	self.end_msg('ok', **kw)
-