Mesa (master): scons: require scons 2.4 or greater

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Module: Mesa
Branch: master
Commit: 810c9a4ebaf22e8f7c08805c1b829b3d77be7079
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=810c9a4ebaf22e8f7c08805c1b829b3d77be7079

Author: Juan A. Suarez Romero <jasuarez at igalia.com>
Date:   Wed Aug  1 17:48:11 2018 +0200

scons: require scons 2.4 or greater

There is a bug with scons 2.3, used in Travis, where it fails to detect
some C functions.

Reviewed-by: Andres Gomez <agomez at igalia.com>

---

 SConstruct | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/SConstruct b/SConstruct
index a59a8ea210..6e034fb968 100644
--- a/SConstruct
+++ b/SConstruct
@@ -28,6 +28,12 @@ import SCons.Util
 import common
 
 #######################################################################
+# Minimal scons version
+
+EnsureSConsVersion(2, 4)
+
+
+#######################################################################
 # Configuration options
 
 opts = Variables('config.py')