2 files changed, 12 insertions, 0 deletions
diff --git a/NEWS b/NEWS
index 6319c02..9e3003b 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,9 @@ NEWS file for obbench
 Version 0.15+git, not yet released
 ----------------------------------
 
+* Obbench now has the option `--tmpdir` to allow setting the location
+  of temporary directories. The `TMPDIR` environment variable is used,
+  if the option isn't (with a fallback to `/tmp` if neither is used).
 
 Version 0.15, released 2016-03-16
 ----------------------------------
diff --git a/obbench b/obbench
index 9172457..95132b7 100755
--- a/obbench
+++ b/obbench
@@ -18,6 +18,7 @@
 
 
 import os
+import tempfile
 
 import cliapp
 import ttystatus
@@ -35,11 +36,19 @@ class ObnamBenchmarker(cliapp.Application):
             metavar='DIR',
             default='.')
         self.settings.string(
+            ['tmpdir'],
+            'use DIR for temporary files',
+            metavar='DIR',
+            default=tempfile.gettempdir())
+        self.settings.string(
             ['publish-command'],
             'after a successful run, run COMMAND',
             metavar='COMMAND')
 
     def process_args(self, args):
+        if self.settings['tmpdir']:
+            tempfile.tempdir = self.settings['tmpdir']
+
         spec = self.read_benchmark_spec(args[0])
         statedir = self.create_state_directory()
         self.clone_or_update_git(statedir, spec)