Some build chains *still* don't like -I wuthout an argument.

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 26e81924..e7aad0cc 100755
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ needed_files = ['gpsd.h', 'packet_names.h']
 gpspacket_sources = ["gpspacket.c", "packet.c", "isgps.c",
             "driver_rtcm2.c", "strl.c", "hex.c", "crc24q.c"]
 include_dirs = [ os.path.realpath(os.path.dirname(__file__)),
-                 abs_builddir]
+                 abs_builddir or "."]
 
 def make(f_name):
     cmd = "%s -C %s %s" %(MAKE, abs_builddir, f_name)