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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 10bb8384..72b16fe5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1343,7 +1343,7 @@ else
GDM_PID_FILE=$GDM_RUN_DIR/gdm.pid
fi
-AC_SUBST(GDM_PID_FILE)
+AS_AC_EXPAND(GDM_PID_FILE, "$GDM_PID_FILE")
AC_DEFINE_UNQUOTED(GDM_PID_FILE, "$GDM_PID_FILE", [pid file])
dnl ---------------------------------------------------------------------------