From 12fb29e8a566bf284cfeb9b6d8c944e0ec13e450 Mon Sep 17 00:00:00 2001
From: Thomas Nagy <tnagy@waf.io>
Date: Thu, 20 Jul 2017 19:26:22 +0200
Subject: [PATCH] WAF_PRINT_FAILURE_LOG #1930

---
 waflib/Context.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/waflib/Context.py b/waflib/Context.py
index f286bbae..a6ec4695 100644
--- a/waflib/Context.py
+++ b/waflib/Context.py
@@ -489,9 +489,15 @@ class Context(ctx):
 		if self.logger:
 			self.logger.info('from %s: %s' % (self.path.abspath(), msg))
 		try:
-			msg = '%s\n(complete log in %s)' % (msg, self.logger.handlers[0].baseFilename)
+			logfile = self.logger.handlers[0].baseFilename
 		except AttributeError:
 			pass
+		else:
+			if os.environ.get('WAF_PRINT_FAILURE_LOG'):
+				# see #1930
+				msg = 'Log from (%s):\n%s\n' % (logfile, Utils.readf(logfile))
+			else:
+				msg = '%s\n(complete log in %s)' % (msg, logfile)
 		raise self.errors.ConfigurationError(msg, ex=ex)
 
 	def to_log(self, msg):