Wrap thread local in function for Cygwin

Fixes #1826. See #1352 for a previous instance of a similar change.

1 files changed, 10 insertions, 1 deletions

diff --git a/src/libutil/logging.cc b/src/libutil/logging.cc
index c1cff5cf9061..e860b27d3d0b 100644
--- a/src/libutil/logging.cc
+++ b/src/libutil/logging.cc
@@ -6,7 +6,16 @@
 
 namespace nix {
 
-thread_local ActivityId curActivity = 0;
+static thread_local ActivityId curActivity = 0;
+
+ActivityId getCurActivity()
+{
+    return curActivity;
+}
+void setCurActivity(const ActivityId activityId)
+{
+    curActivity = activityId;
+}
 
 Logger * logger = makeDefaultLogger();