Mesa (master): scons: Fix git_sha1.h generation fallback.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: 5db57b8a55bb1961f1ada029f63c1f07511d60aa
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5db57b8a55bb1961f1ada029f63c1f07511d60aa

Author: Jose Fonseca <jfonseca at vmware.com>
Date:   Mon Mar 23 10:48:31 2015 +0000

scons: Fix git_sha1.h generation fallback.

I didn't meant to remove the 'if not os.path.exists(filename)' statement.

Reviewed-by: Brian Paul <brianp at vmware.com>

---

 src/mesa/SConscript |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/mesa/SConscript b/src/mesa/SConscript
index a563fd2..5b80a21 100644
--- a/src/mesa/SConscript
+++ b/src/mesa/SConscript
@@ -130,9 +130,10 @@ def write_git_sha1_h_file(filename):
         (commit, foo) = subprocess.Popen(args, stdout=subprocess.PIPE).communicate()
     except:
         # git log command didn't work
-        dirname = os.path.dirname(filename)
-        if not os.path.exists(dirname):
-            os.makedirs(dirname)
+        if not os.path.exists(filename):
+            dirname = os.path.dirname(filename)
+            if not os.path.exists(dirname):
+                os.makedirs(dirname)
             # create an empty file if none already exists
             f = open(filename, "w")
             f.close()